HomeMy WebLinkAbout6021 INNOVATION WAY; 130; FPC2022-0110; Permit(Jity of
Carlsbad
Print Date: 05/01/2025 Permit No: FPC2022-0110
Job Address: 6021 INNOVATION WAY, # 130, CARLSBAD, CA 92009-1787 Status: Closed - Finaled
Permit Type: FIRE-Construction Commercial Work Class: Fixed Extinguishing Syste
Parcel 4: 2132611400 Track #: Applied: 06/14/2022
Valuation: $97,080.00 Lot #: Issued: 01/06/2023
Occupancy Group: Project #: Finaled Close Out: 03/30/2023
#of Dwelling Units: Plan #:
Bedrooms: Construction Type: Final Inspection:
Bathrooms: Orig. Plan Check #: INSPECTOR: Salcedo, Felix
Plan Check #:
Project Title:
Description: KRAVE ASIAN FUSION - INSTALL KITCHEN SUPPRESSION SYSTEM
Applicant: FPContractor:
AZTEC FIRE AND SAFETY INC AZTEC FIRE AND SAFETY INC
CHRISTOPHER HARMON 8108 COMMERCIAL ST
8108 COMMERCIAL ST LA MESA, CA 91942-2926
LA MESA, CA 91942-2926 (619) 464-5625
(619) 261-4275
FEE AMOUNT
FIRE Hood & Duct Extinguishing System Initial Sys $458.00
Total Fees: $458.00 Total Payments To Date: $458.00 Balance Due: $0.00
Fire Department Page 1 of 1
1635 Faraday Avenue, Carlsbad CA 92008-7314 1 442-339-2665 1 Inspections: 442-339-2660 1 www.carlsbadca.gov
Model EWC (Electric Wet Chemical) Extinguishing System
Installation, Operation, and Maintenance Manual
EWC Extinguishing System Typical Hood End Cabinet Installation
RECEIVING AND INSPECTION
Check for any signs of damage upon receipt, and if found, report it immediately to the carrier.
Check that all items are accounted for and free of damage.
WARNING!!
The Electric Wet Chemical (EWC) extinguishing system unit is to be installed, inspected,
recharged and maintained in accordance with NFPA 17A, NFPA 96, and the National Fire Code of
Canada as applicable.
Installation and maintenance of the EWC extinguishing system must be performed in
accordance with this manual by a factory trained and authorized distributor. Improper
installation poses serious risk of injury due to electric shock and other potential hazards. Read
this manual thoroughly before installing or servicing this equipment. ALWAYS disconnect
power prior to working on equipment.
Save these instructions. This document is the property of the owner of this equipment and is required
for future maintenance. Leave this document with the owner when installation or service is complete.
Part No. A0029342 UL EX27953 October 2020 Rev. 7
Table of Contents
WARRANTY.........................................................................4
Certifications and Approvals.....................................................4
SystemOverview......................................................................4
COMPONENTS....................................................................5
CylinderAssembly....................................................................6
Cylinder and Actuator Bracket..................................................7
DischargeAdapter....................................................................7
Primary Actuator Kit (PAK) .......................................................&
Secondary Valve Actuator (SVA) and Hose .............................9
Supervisory Pressure Switch (Optional) ...................................9
Nozzles...................................................................................10
VentPlug .................................................................................10
Gas Shut-Off Valves...............................................................11
Electric Remote Manual Release ...........................................11
Firestat (Heat) Detector ..........................................................11
INSTALLATION ..................................................................12
Cylinders.................................................................................12
VentPlug ................................................................................13
Primary and Secondary Actuator Installation..........................13
Primary Actuator Kit (PAK) .....................................................14
Secondary Valve Actuator ......................................................14
Supervisory Pressure Switch..................................................15
Duct and Plenum Protection ...................................................16
Plenum Protection ...............................................................16
DuctProtection ....................................................................17
Ventilation Exhaust and Dampers ..........................................20
Electrostahc Precipitators (ESP).............................................20
Appliance Protection...............................................................21
Overlapping Appliance Protection .......................................21
Group Protection.....................................................................23
Overlapping Protection ........................................................23
Overlapping Coverage - Group Protection ..........................23
Dedicated Appliance Protection ..........................................27
Upright Broiler/Salamander Protection ................................28
Broiler Protection ....................................................................29
Closed-Top Chain Broiler....................................................29
Open-Top Chain Broiler ..... . ................................................. 29
Charcoal Charbroiler (Natural/Mesquite).............................30
Range Top with Shelf..........................................................31
Range with Obstruction .......................................................32
Range with Upright Obstruction ....... .................................... 33
Agent Distribution Piping ........................................................34
Single Cylinder Nozzle and Piping Parameters...................35
Dual Cylinder Nozzle and Piping Parameters .....................37
Nozzles................................................................................39
Gas Shut-Off Valves............................................................40
Fire Protection System Firestat ..............................................41
Non-Solid Fuel Appliances (Rated 450F)...........................41
Non-Sclid Fuel Appliances (Rated 600SF) ........................... 41
Fire Protection Manual Actuation Device................................43
Trouble Input Wiring ...............................................................43
BatteryBackup .......................................................................44
Power Supply Adjustment.......................................................44
Fire Protection System Printed Circuit Board ......................45
ELECTRICAL......................................................................48
WireAmpacity Rating .............................................................49
Distance Limitations................................................................49
Fire Alarm Contacts................................................................49
FireGroup...............................................................................50
Fire Protection System Supervised Loops..............................51
OPERATION.......................................................................52
Test Mode Overview...............................................................52
ResetOverview ......................................................................53
TROUBLESHOOTING ........................................................55
Appliance Shutdown in Fault Conditions ...............................56
Local Alarm Muting.............................................................56
TestMode...........................................................................56
Supervised Loop Wiring Troubleshooting ..............................57
DIP Switch Settings............................................................58
Typical DIP Switch Arrangement........................................59
INSPECTION AND TEST....................................................60
Start-up/Test Procedure.........................................................60
Preparing System for Test..................................................60
Connecting Service Test Tank to the System.....................60
Test Procedure ...................................................................61
Disconnecting Service Tank/Re-arming System ................62
MAINTENANCE ..................................................................63
Every Month (System Owner)................................................63
Every Six Months (Authorized Distributor).............................64
Every Twelve-Years ............................................................... 64
AgentCylinders ..................................................................64
Actuation Hoses..................................................................64
Conditional Maintenance .......................................................65
Replacing A Primary Actuation Kit......................................65
Replacing A Secondary Valve Actuator..............................65
POST-DISCHARGE MAINTENANCE.................................66
General Information ...............................................................66
Appliance Cleanup.................................................................66
Cleaning Distribution System.................................................66
CleaningNozzles...................................................................66
Flushing the Distribution Pipe Network..................................67
Flushing Procedure with Spare/Test EWC Cylinder..............67
Flushing Procedure with an External Water Supply...............68
Cylinder Maintenance ............................................................68
Removing a Cylinder..............................................................69
Depressurizing a Cylinder...................................................70
Rebuilding the Valve/Siphon Tube Assembly.....................71
Charging Cylinders ................................................................72
Recharging an EWC Cylinder.............................................73
Charging a Spare/Test Cylinder .........................................74
Installing a Cylinder ............................................................74
Rechecking the System......................................................74
EWC SUPPRESSION SYSTEM PARTS ............................75
Start-Up and Maintenance Documentation............................76
JobInformation ......................................................................76
WARRANTY
Model EWC extinguishing system is warranted to be free from defects in materials and workmanship,
under normal use and service, for a period of 60-months from date of shipment. Warranty does not cover
consumable products such as batteries, nitrogen, and nozzle caps. This warranty is null and void if:
The system is not installed by a factory trained installer per the MANUFACTURER'S installation
instructions shipped with the product.
The equipment is not installed in accordance with Federal, State, Local codes, and regulations.
The system is misused or neglected, or not maintained per the MANUFACTURER'S maintenance
instructions.
The system is not installed and operated within the limitations set forth in this manual.
The invoice is not paid within the terms of the sales agreement.
The MANUFACTURER shall not be liable for incidental and consequential losses and damages potentially
attributable to malfunctioning equipment. Should any part of the equipment prove to be defective in
material or workmanship within the 60-month warranty period, upon examination by the
MANUFACTURER, such part will be repaired or replaced by MANUFACTURER at no charge. The BUYER
shall pay all labor costs incurred in connection with such repair or replacement. Equipment shall not be
returned without MANUFACTURER'S prior authorization, and all returned equipment shall be shipped by
the BUYER, freight prepaid to a destination determined by the MANUFACTURER.
NOTE: To receive warranty coverage for this product, copy and print out the "Start-Up and
Maintenance Documentation" on page 76. Fill in all required information. Fax the page to
1-919-516-8710 or call 1-866-784-6900 for email information within thirty (30) days of purchase.
Certifications and Approvals
The Electric Wet Chemical fire suppression system is UL & ULC listed in accordance with UL300, UL1 254,
U LCOR D-C 1254.6.
The microprocessor-based control board is ETL Listed to UL Standard 864 and CAN/U LC-5527-1 1.
The Electric Wet Chemical fire suppression system is acceptable for use in New York City, and is
approved per FDNY COA #5870.
System Overview
The EWC extinguishing system provides fire protection for commercial cooking appliances and ventilation.
The EWC extinguishing system is electrically released via a 24V DC solenoid valve. Extinguishing system
units with electrical detection, activation, and control require the use of a Listed Control Panel, which has
been found acceptable for releasing device service and which is compatible with the electrical actuators
used on the extinguishing system. In addition, all electrical detectors, notification devices, and pull stations
are required to be Listed and compatible with the Control Panel.
4
COMPONENTS
The following section lists the major components used in the Model EWC extinguishing system.
Figure 1 - Shipping/Test View
Unit is shown in Shipping/Test
Position
Tank Straps
Tank Mounting Bracket
(Secured to cabinet with rivets)
Cylinder Tanks (Up to four
tanks may be installed
depending on cabinet size.)
Figure 2 - Exploded View
Tank Mounting Brackets
Secondary Supervisory Pressure
Switch (Optional)
Secondary Cylinder (Optional)
Primary Cylinder
Supervisory Pressure Switch
(Optional)
Primary Actuator Kit
Secondary Actuator Hose (Optional)
Secondary Valve Actuator (Optional)
Primary Valve with Siphon Tube
Secondary Valve with Siphon Tube
(Optional)
Tank straps not shown.
Valve Actuation Interface
Schrader Valve
Pressure Gauge
Discharge Outlet
Tank to Actuator Distance =
23-1/4"
Tank Diameter = 10"
Cylinder Assembly
The EWC cylinder assembly (pIn 87-300001-001) uses a mild steel cylinder, conforming to 4BW250 DOT
& 4BWM-17 TC specifications, and a nickel-plated brass valve with pressure indicator gauge. Each valve
includes a Schrader port for connection to the primary actuator hose (for primary cylinders) or the optional
supervisory pressure switch (for secondary cylinders).
Each cylinder assembly is factory-filled with CAS liquid fire suppressant and pressurized to 200 PSIG
(1379 kPA) at 70°F (21°C). Each cylinder supports up to 6 flow points.
Figure 3 - Cylinder Tank Details
i.
The pressure of a cylinder will vary with the ambient temperature, as detailed in Table 1. The gauge
indicator (shown in Figure 3) should be in the acceptable 'green' range for a cylinder that is properly
pressurized and within the listed operating temperature range. For a cylinder at the lowest listed operating
temperature of 32°F (0°C), the pressure gauge should read approximately 185 psig (the lower end of the
green range). For a cylinder at the highest listed operating temperature of 132°F (54.40C), the pressure
gauge should read approximately 224 psig (the upper end of the green range).
Table I - Cylinder Temperature Vs Pressure
230
(1586 kPA)
CO 220
D_ (1517 kPA)
210
(1448 kPA)
CL
Cr) 200
(1378kPA)
190 C', (1309 kPA) .
180 IL (1240 kPA)
30 40 50 60 70 80 90 100 110 120 130
(-1) (4) (10) (15.6) (21) (27) (32) (38) (43.3) (49) (54.4)
Temperature OF (°C)
Cylinder and Actuator Bracket
Each cylinder assembly is secured to a factory-installed cylinder bracket in the cabinet (pin EWC-
UCTANKBRACKET). The cylinder is secured to the cylinder bracket via three (3) stainless steel straps.
The cylinder bracket also includes a platform for securing a primary actuator kit or secondary valve
actuator during shipping and maintenance procedures.
Figure 4 - Cylinder and Actuator Bracket
10
0 0 0
0 0 0
o 0 0
o 0 0
o 0 0
0 0 0
Discharge Adapter
The discharge adapter (pin WK-283952-000) is used to connect the EWC cylinder valve outlet to the agent
distribution pipe network. The 1/2-inch NPT internal thread of the discharge adapter outlet is connected to
the supply line via an elbow and adapter.
The discharge adapter uses an 0-ring (p/n WK-108019-000) at the valve port to eliminate leaks during
discharge.
Figure 5 - Discharge Adapter
7
Primary Actuator Kit (PAK)
The Primary Actuator Kit (PAK) (p/n 87-300030-001) is installed on each primary cylinder assembly to
pneumatically open the cylinder valve and provide actuation pressure for up to three secondary valve
actuators.
The PAK consists of a pneumatic actuator, 24V DC solenoid valve, check valve, primary actuator hose,
and associated fittings.
Upon automatic or manual system actuation, the control panel sends a momentary 24V DC release signal,
opening the PAK solenoid. Pressure from the primary cylinder is passed through the solenoid and check
valve, into the primary actuator (actuating the primary cylinder), and into the interconnected secondary
valve actuators (actuating the secondary cylinders).
The primary actuator has a 1/8" NPT inlet port for connection to the primary system cylinder, and a 1/8"
NPT outlet port for connection to the secondary cylinder actuation line or actuation plug for single cylinder
system. The primary actuator includes a piston with a spring-loaded locking pin which locks the piston in
the discharge position, ensuring complete discharge of the cylinder contents.
Figure 6 - Primary Actuator Kit
Schrader Service Port
Primary Actuator Hose
(Stainless Steel)
Solenoid Valve 3 Optional Supervisory
Pressure Switch
Connection
Primary Actuator 4
Locking Pin
Piston
Secondary Valve Actuator (SVA) and Hose
A Secondary Valve Actuator (SVA) (p/n 87-120042-001) is installed on each secondary cylinder assembly
to pneumatically open the cylinder valve(s). The SVA has 1/8" NPT inlet and outlet ports for connection to
the system actuation line via the SVA hose. All secondary hoses require a 1" minimum bend radius. The
SVA includes a spring-loaded locking pin that locks the actuator piston in the discharge position, ensuring
complete discharge of the cylinder contents.
Figure 7 - Secondary Valve Actuator
Actuation Line Plug
Locking Pin
Piston
Supervisory Pressure Switch (Optional)
Secondary Valve Actuator Hose
7.5" hose option (p/n 87-120045-001)
24" hose option (p/n 87-120045-002)
60" hose option (p/n 87-120045-003)
The optional primary and secondary supervisory pressure switch (p/n 87-300040-001) are pre-set to alarm
at a cylinder pressure of —10% below the lowest operating system pressure of 185 psig (pressure at the
lowest listed operation temperature of 320F). The supervisory pressure switch uses a diaphragm sensor to
detect pressure changes. At the pre-determined set point, the unit actuates a SPDT snap-acting switch,
converting a pressure signal into an electrical signal. The supervisory pressure switch can be used on
primary and/or secondary cylinders. For primary cylinders, the pressure switch is mounted on the primary
actuator kit. For secondary cylinders, the pressure switch is mounted on the Schrader fitting installed on
the cylinder valve.
Figure 8 - Supervisory Pressure Switch (Optional)
Supervisory Pressure Switch
(Primary)
Wrench Flats
Secondary Supervisory
Pressure Switch
Schrader Valve Port
Nozzles
There are various types of nozzles utilized in the EWC extinguishing system. The TF1 nozzle (pin 87-
300021-001) is a 2 flow nozzle and is used for all zone protection. The ADP nozzle (p/n 87-300020-001) is
a 1 flow nozzle and is used for plenum, duct, and dedicated appliance coverage (e.g., salamanders,
upright broilers, chain broilers, and range with shelf). The R nozzle (p/n 87-120019-001) is a 1 flow nozzle
and used on ranges with obstructions.
The nozzles include a cap with replaceable, integrated foil seal. The foil seal prevents contamination from
entering the pipe network and is designed to burst upon system discharge, allowing the agent to flow to the
protected hazard area.
Figure 9 - Nozzles
Nozzle
Cap
Foil
ADP IFi R
Vent Plug
A vent plug (p/n 60-9196984-000) is installed in each agent distribution pipe network to prevent pressure
build-up (caused by ambient temperature increases in the kitchen) from rupturing the foil seals on the
nozzles. The vent plug utilizes a ball check to allow for relief of minor pressure increases while sealing
closed under the higher pressure of a system discharge. The vent plug must be installed in a horizontal to
vertically upright position.
Figure 10 - Vent Plug
10
Gas Shut-Off Valves
Electric gas shut-off valves are used to shut down the flow of fuel gas to the kitchen appliances upon
actuation of the EWC suppression system. An energized solenoid is used to hold the gas valve in the open
position. The solenoid closes the valve when de-energized via the output relay of the control panel. They
are available in 120V AC and 24V DC, ranging from 3/4" to 3" pipe sizes.
Table 2 - Electric Gas Valves
Size PIN (ASCO)
314" 8214235
8214250
1-1/4" 8214265
1-1/2" 8214275
8214280
2-1/2" 8214290
8214240
Electric Remote Manual Release
An electrically operated manual release that is listed must be used with the EWC extinguishing system.
The electric remote manual release is used to actuate the EWC extinguishing system manually and must
be properly located and supervised in accordance with NFPA 17A and NFPA 96.
Firestat (Heat) Detector
The Firestat (Fenwal Detect-a-Fire) is a listed electric thermal detector available in a variety of temperature
settings and used to actuate the EWC extinguishing system automatically. When a Firestat senses a
temperature higher than its setpoint, the Firestat contacts will close and energize the EWC suppression
system via the control panel.
Figure 11 - Firestat
11
INSTALLATION
The EWC extinguishing system consists of pressurized agent storage cylinders, agent distribution piping,
valve actuators, optional supervisory pressure switches, and agent discharge nozzles. All primary
components and piping are factory-installed. Systems may be comprised of single or multiple cylinders
depending on the size and configuration of the protected hazards.
Cylinders can be piped independently, or manifolded. On two-cylinder systems, the cylinders will be in a
manifold configuration. Refer to Figure 34 on page 34 for a two-cylinder system example. On three-
cylinder systems, two cylinders will be in a manifold configuration and one independent. On four-cylinder
systems, there will be two separate manifolds.
In a fire condition or upon manual actuation, the EWC solenoid valve is opened, allowing pressure from the
primary cylinder to flow to the primary and secondary cylinder valve actuators, opening the cylinder valves
and discharging EWC liquid fire suppressant to the protected hazard areas.
WARNING!
System must be installed in conditioned space between 32°F and 130°F
Figure 12- Cylinder Assemblies
Primary Cylinder Assembly
Secondary Cylinder Assembly (Optional)
Cylinders
Cylinders are typically factory-installed, pressurized, and may be located anywhere within the hood end
cabinet. Additional cylinders may be field installed, as needed, in the additional hood end or wall mount
cabinet. The following examples show a dual cylinder system mounted to the right of the hood control unit.
Each cylinder assembly is secured to a factory-installed cylinder bracket in the hood end cabinet. The
cylinder is secured to the cylinder bracket via three (3) stainless steel straps.
Figure 13 - Dual Cylinder Mounted in Cabinet
I
Right side cabinet mount shown. 11 1 1 I
12
Correct Orientation Incorrect Orientation
Direction of
I Pressure Flow
Direction of
+ Pressure Flow
of
Flow
of
Pressure Flow
Vent Plug
The vent plug is factory-installed in the agent distribution supply line. The vent plug can be installed in the
outlet or run off a tee in the distribution pipe network. The vent plug must be installed from a horizontal to
vertically up position to ensure that it will open upon slight rises in pipe system pressure (e.g., due to
ambient temperature fluctuation).
The vent must not be installed below the horizontal position (e.g., pointing downward), or it may fail to
relieve pressure when required. One vent plug is required for each distribution pipe network.
Figure 14 -Vent Plug Orientation
NOTE: When improperly installed, gravity pulls the vent plug closed, preventing small pressure
buildups from escaping.
Primary and Secondary Actuator Installation
WARNING!
Do not complete PAK or secondary valve actuator installation until system test and
commissioning are complete. The cylinder bracket includes a platform for securing a primary
actuator kit or secondary valve actuator during shipping and maintenance procedures. The
system actuators must be in the shipltest position for all commissioning and test procedures.
Testing with actuators in place will result in discharge of the agent cylinders
Refer to "Start-up/Test Procedure" on page 60 for the testing and commissioning procedure.
Figure 15 - PAK in Ship/Test and Installed Positions
Ship/Test Position Installed Position
Shipping Bolts 4. Mounting Bolts
Nut 5. Primary Actuator Kit (In Transport Position)
Valve Protection Plate 6. Supervisory Pressure Switch
13
Primary Actuator Kit (PAK)
The primary actuator kit is mounted to the primary cylinder
bracket during shipment and when testing the system. With the
cylinders securely mounted and connected to the system
piping, the primary actuator kit can be installed onto the
primary cylinder for the final setup.
Remove the valve protection plate and nuts. Retain the
mounting bolts for installation of the PAK.
Ensure the primary actuator piston is in the set position.
Loosen the PAK shipping bolts from the top of the bracket,
slide the unit back and lower it into position on the valve
actuation flange.
Insert the mounting bolts through the bottom of the valve
flange into the PAK mounting holes and tighten securely.
Connect the primary actuator hose to the Schrader valve
port on the primary cylinder valve. The primary hose
requires a 1.5" minimum bend radius.
Figure 16 - Actuator Valve Set Position
' WARNING!
nstallation of the primary actuator hose is the FINAL step performed.
Connecting this hose earlier may result in accidental systemdischarge. Refer to "Start-up/Test
Procedure" on page 60 for the testing and commissioning procedure.
The primary and secondaryactuation hoses cannot be interchanged. The primary actuation hose
must be used with the PAK.
Secondary Valve Actuator
With the cylinders securely mounted and connected to the system piping, the secondary valve actuators
(SVA) can be installed onto each of the secondary cylinder(s).
Remove the valve protection plate and nuts. Retain the mounting bolts for installation of the SVA.
Loosen the SVA shipping bolts from the top of the bracket, slide the unit back and lower it into position
on the valve actuation flange.
Insert the mounting bolts through the bottom of the valve flange into the SVA mounting holes and
tighten securely.
Ensure the secondary actuator hose is securely connected to the primary actuator output port and
SVA input port.
Key Limitations
Total length of secondary actuation flex hose must not exceed 75" of flex hose, refer to "Secondary
Valve Actuator (SVA) and Hose" on page 9 for secondary hose information.
Secondary actuator hose(s) require 1" minimum bend radius.
Maximum number of secondary valve actuators operating from the primary actuator unit is three (3).
WARNING!
The Valve Protection Plate must remain on the valve actuation port until the valve actuator is
installed
The primary and secondary actuation hoses cannot be interchanged. The secondary actuation
hose (7 ,74, 24" or 60' length) must be used with secondary valve actuators
14
Supervisory Pressure Switch
A supervisory pressure switch will always be located on the primary cylinder by the Primary Actuator Kit
(PAK). For secondary cylinders, this is an optional component that may be added on. For primary
cylinders, the pressure switch is mounted on the primary actuator kit. For all secondary cylinders, the
pressure switch is mounted on the Schrader fitting on the cylinder valve.
Remove cap from applicable Schrader fitting.
Thread the switch onto the Schrader using the brass wrench flats only.
Figure 17 - Supervisory Pressure Switch Installation
Supervisory Pressure Switch (Primary) 3. Supervisory Pressure Switch (optional)
Wrench Flats 4. Schrader Valve Port
Proof pressure (*) limits stated on the nameplate must never be exceeded, even by surges in the
system. Occasional operation of unit up to proof pressure is acceptable (e.g., start-up, testing).
Continuous operation should not exceed the designated over range pressure (**).
*proof pressure - the maximum pressure to whicha pressure sensor may be occasionally
subjected, which causes no permanent damage (e.g., start-up, testing).
**Over Range Pressure - the maximum pressure to which a pressure sensor may be continuously
subjected without causing damage and maintaining set point repeatability.
NOTE: Pressure switches do not contain any field replaceable parts. Refer to applicable control
panel manual for wiring of the supervisory pressure switch. Wire in accordance with local and
national electrical codes.
WARNING!
Disconnect all supply circuits before wiring pressure switch. Electrical ratings stated in literature
and on nameplate must not be exceeded - overload on a switch can cause failure on the first cycle.
The electrical rating is rated to 5A resistive and 3A inductive at 30V DC; gold flashing over silver contact for
loads down to 1 mA at 24V DC.
Wiring Color Code Terminals
Red NO (NC under Pressure)
Black NC (NO under Pressure)
White Corn
Supervisory pressure switches are connected in parallel to the control panel supervisory input.
15
H
10'
Duct and Plenum Protection
The EWC extinguishing system for duct and plenum coverage can be provided by independent EWC tanks
and piping or integrated with the EWC tanks and piping used for protection of the appliances.
Plenum Protection
The ADP nozzle is used to protect plenum areas in both single bank and v-bank plenum configurations. A
single ADP nozzle will protect up to a 4' wide x 10' long plenum section. For larger plenum areas,
additional ADP nozzles are added as required, with each nozzle protecting no more than a 4' wide by 10'
long plenum section. ADP nozzles may be installed pointing in the same direction, and/or at opposite ends
of the plenum, pointing toward each other. ADP nozzles must not be installed back-to-back when
protecting plenum areas. When positioned at the end of the plenum, nozzles must be installed from 0 to 6"
into plenum.
ADP nozzle locations for plenum protection are shown in Figure 18 and Figure 19.
Figure 18 - Single Bank Filter Plenum
SIDE VIEW TOP VIEW
*Isolated Plenum Place for Clarity *Isolated Plenum Place for Clarity
16
Figure 19 - Dual V-Bank Filter Plenum
SIDE VIEW TOP VIEW
*Isolated Plenum Place for Clarity *Isolated Plenum Place for Clarity
10'
Duct Protection
The ADP nozzle is used for the protection of exhaust ductwork and can protect any duct cross-section type
(e.g. round, square, or rectangular). A sufficient quantity of ADP nozzles must be provided to ensure that
no single nozzle coverage exceeds 50" in perimeter.
A single ADP nozzle will protect a duct up to 50" perimeter (16" nominal diameter) and unlimited length. A
minimum of 2 ADP nozzles is required for protection of ducts from 50' to 100" in perimeter and unlimited
length. A minimum of 3 ADP nozzles is required for protection of ducts exceeding 100" perimeter (32"
nominal diameter) and unlimited length.
When using multiple nozzles (modular protection), the coverage area for each nozzle must not exceed 50"
perimeter. Table 3 details the maximum rectangular duct configurations for one and two nozzle duct
protection.
Figure 20 - Nozzle Duct Protection
Duct 3. Single Nozzle
Hood 4. Dual Nozzle
17
Table 3 - Rectangular Duct Coverage Maximum
Single Nozzle Duct Coverage
(50 inches or less perimeter)
Side A (Inches) Maximum Side B (Inches)
21" 4"
20.5" 4.5"
20" 5"
19.5" 5.5"
19" 6"
18.5" 6.5"
18" 7"
17.5" 7.5"
17" 8"
16.5" 8.5"
16" 9"
15.5" 9.5"
15" 10"
14.5" 10.5"
14" 11"
13.5" 11.5"
13" 12"
12.5" 12.5"
Two ADP-Nozzle Duct Coverage
(50 to 100 inches perimeter)
Side A (Inches) Maximum Side B (Inches)
44"
43"
42"
41"
40"
39"
38"
37"
36"
35"
34"
33" 16.8"
32" 17.2"
31" 17.7"
30" 18.1"
29" 18.5"
28" 18.9"
27" 19.3"
26" 19.7"
25" 19.9"
24" 20.2"
23" 20.5"
22" 20.8"
21" 21"
18
Nozzles must be installed from 0' to 6" into the protected area of the duct. When more than I ADP nozzle
is required (modular protection), each nozzle must be located at the center of its protected module area.
Additional nozzles are not required for changes in direction*. Duct obstructions and common ductwork
must be protected in accordance with this manual, NFPA 17A and NFPA 96.
ADP nozzle location and aim for duct protection are shown in Figure 21 and Figure 22.
*When a change in direction occurs less than 6" from the duct entrance, the nozzle must be aimed as
shown in Figure 21 and Figure 22.
Figure 21 - Single Nozzle Placement (0-50" Perimeter Duct)
Square Duct Round Duct Rectangular Duct
16" Nom.
_(404mm) -
12.5"
(318mm)
Max ED
Vertical Duct Vertical/Horizontal Duct
(0-152mm) 1 24"
i
!(51102mm
ADP Nozzle A. Rectangular Duct Width
Horizontal Duct Centerline (CL) B. Rectangular Duct Length
Aim Point
Vertical Duct Centerline (CL)
Duct Entrance
Duct perimeter up to and including 50" (1270mm).
To determine the perimeter: 2(A) + 2(B) = 50" (1270mm).
19
Figure 22 - Dual Nozzle Placement (50-100" Perimeter Duct)
Square Duct Round Duct Rectangular Duct
U®
32" Nom.
(809mm)
*9 _
Vertical Duct
0-6" (0-152mm)
Vertical/Horizontal Duct
O\\\3
2-4"
(51-102mm)
1 . ADP Nozzle
Vertical Duct Centerline (CL)
Aim Point
Horizontal Duct Centerline (CL)
Duct Entrance
1/4 of dimension X
1/2 of dimension X
1/4 of Duct Diameter
1/2 of Duct Diameter
Ventilation Exhaust and Dampers
The EWC extinguishing system can be used with the exhaust fan either on or off when the system is
discharged. It is recommended that the exhaust fan remain on at the time of discharge to aid in the
removal of smoke, gases, and other airborne materials from the hazard area in the event of a fire. A
damper, if present, should be left open at system discharge. However, if the damper is closed, the system
designer must make sure that additional nozzles are required.
Electrostatic Precipitators (ESP)
An Electrostatic Precipitator (ESP) is designed to remove smoke and other airborne contaminants from the
air flowing through the exhaust ductwork as a means of pollution control. Exhaust ductwork using ESPs
requires ADP nozzle(s) upstream (prior to) and immediately downstream of the ESP. The downstream
nozzle(s) must be located centrally in the ductwork and should be aimed at the middle of the ESP.
Distribution piping to the ADP nozzles must not interfere with the function of the ESP unit.
A Pollution Control Unit (PCU) and/or Electrostatic Precipitator (ESP) covered with this fire system can
utilize up to 12 flow points per tank.
20
Appliance Protection
The EWC system utilizes both overlapping and dedicated nozzle appliance coverage, depending on the
type of cooking appliance(s) requiring protection.
Overlapping appliance coverage allows a given area under the hood, defined as the hazard zone, to be
protected by overlapping (TF1) nozzles. Nozzles are evenly spaced at the same height and alignment
(front-to-back) relative to the hazard zone.
Dedicated appliance protection utilizes an ADP nozzle (or nozzles) for protection of an individual
appliance.
Overlapping, dedicated appliance, plenum, and duct protection may be incorporated in a single pipe
network on the EWC extinguishing system.
The following sections detail the different nozzle coverage and placement parameters for overlapping and
dedicated nozzle appliance protection methodologies.
Overlapping Appliance Protection
A single hazard zone utilizing overlapping coverage is 30" deep, by the total length of the cooking surface
of the protected appliances. The cooking surfaces of all appliances protected by overlapping nozzles must
be located within the defined hazard zones. Cooking appliances eligible for overlapping protection are
outlined in Table 4 on page 22. The lowest and highest cooking surfaces will determine the height of the
fire suppression nozzles. All overlapping nozzles must be mounted at the same height in a single hazard
zone. Overlapping protection uses TEl nozzles only.
For applications where overlapping protection cannot be used, such as an upright boiler, dedicated
appliance protection must be used.
Figure 23 - Overlapping Protection Option
Min 40" Mm
Max 45" Max
End of
Hazard
Zone
24"-24"-
Max Max
2" Max 12" Max
Cooking
Appliances
End of
Hazard
Zone
21
Appliance Coverage
Table 4 illustrates the maximum permitted cooking surface dimensions of each appliance that can be
protected within a single overlapping zone. It is important to note that the cooking surface (area requiring
protection) is different than the total appliance size.
Table 4 - Maximum Permitted Cooking Surface
Hazard Maximum Cooking Hazard Dimensions
F maximum a u
(with or w/o Drip-board) 24 inches deep 34 inches length
Fryer, minimum (3) 15 inches deep 14 inches length (with or w/o Drip-board)
Tilt Skillet 24 inches deep 34 inches length
Griddle 30 inches deep Unlimited length
Range w/o Shelf/Obstruction 30 inches deep Unlimited length
Gas/Electric Radiant
Char-broiler in ches nches deep Unlimited length
Lava/Pumice/Synthetic Rock
'4' Char-broiler ' /
25-1/4 inches deep Unlimited length
Wok, maximum 24 inch diameter 8 inches deep
Wok, minimum 11 inch diameter 3 inches deep
Notes:
All dimensions shown are based on overlapping protection.
All dimensions and areas shown reference the cooking surface of the appliance, which is typically
smaller than the outside dimensions of the appliance itself.
For multi-vat fryers, no single fryer module (vat & drip board) can exceed the above limitations.
Rear edge of Lava/Pumice/Synthetic Rock Char-broiler cooking surface must be a minimum of 3" from
the back of hazard zone with the longest side of the appliance running left-to-right within the protected
zone.
Protection for tilt skillets and braising pans are to be based on the coverage parameters provided for
fryer protection. Tilt skillets should be placed at the back of the hazard zone. Tilt skillet coverage must
not interfere with the edge of the nozzle discharge pattern.
All appliance hazard surfaces must be located within the hazard zone.
Smaller appliances can be positioned anywhere in the zone (e.g., moved left, right, forward, or
backward, provided the cooking hazard does not extend beyond the perimeter of the zone).
When the depth of the appliance exceeds maximum cooking hazard dimensions, a second row of
nozzle coverage should be added.
Figure 23 illustrates the placement of nozzles for EWC overlapping protection.
22
Group Protection
Overlapping protection provides coverage for a continuous hazard zone, with all TEl nozzles at consistent
position (i.e. zone centerline), spacing, and height.
When there is an area within a hazard zone for which continuous overlapping coverage is not applicable,
the overlapping protection zone must be ended, and a new zone started for the new group of appliances.
Examples where continuous protection is interrupted, include a counter, storage or prep area, appliance
not requiring protection (e.g. enclosed oven) or an appliance requiring dedicated appliance coverage.
Refer to page 24 through page 26 for details of group overlapping protection.
Overlapping Protection
For hazard zones that include one or more deep fat fryers, the overlapping nozzles must be spaced no
more than 12" from each end of the appliance hazard zone and no more than 24" on center. All
overlapping nozzles must be located at the centerline of the 30" hazard zone (front to back), at the same
height, and aimed straight down. The nozzle height must be 40" to 45" above the appliance cooking
surface, except for woks, where height is measured from the inside bottom of the wok. The nozzles must
be positioned along the total hazard zone length to allow protection of each appliance in the hazard zone.
Overlapping Coverage - Group Protection
Overlapping protection provides coverage for a continuous hazard zone, with all nozzles at consistent
position (i.e., zone centerline), spacing, and height.
When there is an area within a hazard zone for which continuous overlapping coverage is not applicable,
the overlapping protection zone must be ended, and a new zone started for the new group of appliances.
Examples where continuous protection is interrupted, include a counter, storage or prep area, appliance
not requiring protection (e.g., enclosed oven) or an appliance requiring dedicated appliance coverage.
The examples on page 24 through page 26 provide details of group overlapping protection for interrupted
zones. This section illustrates the methodology for defining when a new hazard zone is required, as
described above. For specific overlapping coverage parameters (e.g., nozzle spacing and height
requirements).
23
Group Protection Example I - Appliance line separated by unprotected space.
End nozzles must be located 12" or less (horizontally) from the end of the hazard zone. Overlapping
nozzles must be spaced no further than the maximum allowed interval 24" on center.
Figure 24 - Example I
Zone 1 Overlapping Nozzle Spacing C. Zone 2 Overlapping Nozzle Spacing
Zone 1 Overlapping Nozzle Height D. Zone 2 Overlapping Nozzle Height
NOTE: Overlapping (TFI) nozzle spacing and height requirements are based on the appliances
protected for each individual zone, A TFI nozzle must always be located at the start and end of
each zone, no more than 12" from the end of the hazard zone (edge of 1st/last cooking appliance
surface). Refer to "Overlapping Appliance Protection" on page 21.
24
Example 2 - Appliance line separated by appliance requiring dedicated appliance protection (e.g.,
Salamander, upright broiler, range with obstruction).
Figure 25 - Example 2
I 12" 12"
Max Max
12" 12"
Max Max
DEDICATED
APPLIANCE ZONE 2
Zone 1 Overlapping Nozzle Spacing C. Zone 2 Overlapping Nozzle Spacing
Zone 1 Overlapping Nozzle Height D. Zone 2 Overlapping Nozzle Height
NOTE: Overlapping (TFI) nozzle spacing and height requirements are based on the appliances
protected for each individual zone, A TFI nozzle must always be located at the start and end of
each zone, no more than 12" from the end of the hazard zone (edge of 1st/last cooking appliance
surface). Refer to "Overlapping Appliance Protection" on page 21.
25
Example 3 - Appliance lines with overlapping nozzles at different heights
Figure 26 - Example 3
12" 12" 12" 12
Max Max Max Max
H
I II I
_ I
ZONE 1
ZONE 2
Zone 1 Overlapping Nozzle Spacing C. Zone 2 Overlapping Nozzle Spacing
Zone 1 Overlapping Nozzle Height D. Zone 2 Overlapping Nozzle Height
NOTE: All hazard surfaces in a zone must be within 40-45" of the nozzles in that zone.
NOTE: Overlapping (TFI) nozzle spacing and height requirements are based on the appliances
protected for each individual zone, A TFI nozzle must always be located at the start and end of
each zone, no more than 12" from the end of the hazard zone (edge of 1st/last cooking appliance
surface). Refer to "Overlapping Appliance Protection" on page 21.
26
Dedicated Appliance Protection
Dedicated appliance protection utilizes an ADP or R nozzle (or nozzles) for protection of individual
appliances that do not meet the protection parameters for overlapping coverage. Dedicated appliance
protection piping can be integrated with Overlapping Protection. Note that new overlapping protection zone
must be started before and after any appliance requiring dedicated protection.
Coverage parameters for appliances that require dedicated coverage are shown in the following table.
Only those appliances included in the table are eligible for dedicated coverage:
Table 5 - Dedicated Appliance Coverage Requirements
Hazard Maximum Hazard ADP Nozzle R Nozzle
Dimensions Qty Qty
Upright/Salamander Broiler (1) 34 inches deep x 30 inches wide 1 0
Chain Broiler, Closed-top (1) 28 inches deep x 29 inches wide 1 0
Chain Broiler, Open-top (1) 28 inches deep x 29 inches wide 2 0
Charcoal Char-broiler (2) 24 inches deep x 24 inches 1 0
(Natural/Mesquite) wide, max 6 inch fuel depth
EWC Appliance with Shelf (3) 28 inches deep x 21 inches wide 1 0
EWC Appliance with Obstruction(4) 26 inches deep x 18 inches wide 0 1
Notes:
Dimensions above for the Upright/Salamander Broiler and Chain broilers are referencing the inside
broiler compartment.
Dimensions above for the Natural/Mesquite Charcoal Char-broiler are referencing the metal housing
containing the fuel source.
Ranges may have an integral back-shelf that protrudes no more than 11 inches from the back edge of
the cooking surface at a minimum height of 18 inches above the cooking surface. The cooking surface
of the range is defined as the overall burner grate dimensions.
Ranges may have an integral back-shelf or obstruction that protrudes more than 11 inches from the
back edge of the cooking surface at a minimum height of 18 inches above the cooking surface. The
cooking surface of the range is defined as the overall burner grate dimensions.
Additional nozzles must be added for appliances that exceed the maximum hazard dimensions for the
specified nozzle(s). The hazard area must be divided into virtual sections, such that no single section
exceeds the maximum hazard dimensions for the specified nozzle(s). For example, a 24" D x 48" W
charcoal char-broiler would require (2) ADP nozzles, each protecting a maximum 24" x 24" section of
hazard.
Dedicated appliance protection nozzle location details are provided in Figure 27 through Figure 33.
27
Cooking
Appliance
of
artment
Upright Broiler/Salamander Protection
Install union in pipe leading to nozzle to allow for appliance removal and cleaning.
ADP Nozzle mounted within top 4" of broiler compartment, near the front opening, and aimed through grill
toward center of grease drain opening.
Discharge shall not be obstructed by any structural part of the broiler.
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 27 - Broiler/Salamander Protection
28
SECOND NOZZLE:
CENTERED
OVER TOP OPENING OF
BROILER
12 in. (305 mm) MIN.
48 in. (1219 mm) MAX.
T(
NOZZLE CENTE
VERTICALLY IN
OPENING ABOV CHAIN
SECOND NOZZLE:
CENTERED OVER
TOP OPENING OF
BROILER
12 in. (305 mm) MIN.
48 in. (1219 mm) MAX. (1 ir
(25 rr FIRST
CENTE VERTII
OPENI
CHAIN
FRONT VIEW
29
SECOND NOZZLE:
ENTERED OVER
OP OPENING OF IROILER
2 in. (305 mm) MIN.
8 in. (1219 mm) MAX.
SIDE VIEW
Broiler Protection
Closed-Top Chain Broiler
ADP Nozzle mounted at one corner of the chain broiler opening, vertically centered in the opening above
the conveyor, aimed at the opposite back corner.
Discharge shall not be obstructed by any structural part of the broiler.
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 28 - Closed-Top Chain Broiler
NOZZLE CENTERED
VERTICALLY IN OPENING
ABOVE CHAIN
Open-Top Chain Broiler
Two ADP Nozzles are used to protect an open-top chain broiler.
Nozzle 1: mounted at one corner of the chain broiler, vertically centered in the front opening above the
conveyor, 1" back from the opening, aimed at the opposite back corner.
Nozzle 2: centered over top opening, mounted 12" to 48" above the top of the appliance.
Discharge shall not be obstructed by any structural part of the broiler.
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 29 - Open-Top Chain Broiler
AN ADP NOZZLE MAY BE LOCATED ANYWHERE WITHIN THE GRID
DIAGONAL FROM
AIM POINT
48 in. (1219 mm)
MAX.
24 in. (6
48 in. (1219 mm)
MAX.
M POINT: MIDPOINT
HAZARD AREA
Charcoal Charbroiler (Natural/Mesquite)
ADP Nozzle mounted 24" minimum to 48" maximum from the midpoint of the cooking surface to the nozzle
tip, at an angle of 45° or more from the horizontal, aimed at the midpoint of the cooking surface.
Depth of the charcoal is limited to 6" maximum. Mesquite logs or wood are not acceptable.
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 30 - Charcoal Charbroiler
FRONT VIEW
H 24 in. MAX. FUEL
(610 mm)
MAX.
SIDE VIEW
AN ADP NOZZLE MAY BE
LOCATED ANYWHERE
WITHIN THE GRID
NOZZLE LOCATION 45°OR MORE FROM Y'
HORIZONTAL"N/ '.' • / E AIM POINT: I MIDPOINT OF
HAZARD AREA \
- 6 in. (152 mm)
MAX. FUEL
24 in. (610 mm) MAX.
APPLIANCE AREA
30
Range Top with Shelf
Coverage for range w/backshelf is 21" wide by 28" long (deep) per nozzle. The ADP nozzle must be
positioned at the center (left-right) of the protected area. Additional nozzle(s) must be used for ranges
exceeding 21" in width, provided no single nozzle coverage exceeds 21" max-width. Refer to Figure 31 for
an example of modular coverage using 2 nozzles.
All dimensions fixed unless otherwise noted (e.g., mm/max).
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 31 - Range Top with Shelf
ADP Nozzle
Shelf - 11" maximum distance from the rear
edge of the cooking hazard to the front edge
of the shelf.
Distance from rear edge of cooking hazard to
aim point (on the cooking surface) of the
nozzle is 4.5".
Top of Cooking Surface
Nozzle aim point at centerline of protected
module.
31
Range with Obstruction
Coverage for range w/obstruction is 18" wide by 26' long (deep) per nozzle. The R nozzle must be
positioned at the left and/or right edge and centered on the depth of the protected area. One R nozzle can
provide protection for ranges 18 inches wide by 26 inches deep. Additional nozzle(s) must be used for
ranges exceeding 18" in width, provided no single nozzle coverage exceeds 18" max-width. Refer to
Figure 32 for an example of modular coverage using two nozzles.
All dimensions fixed unless otherwise noted (e.g., mm/max).
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 32 - Range with Obstruction
lAlong
'one Edge
V®
R Nozzle 3. 45° Elbow
Shelf/obstruction that extends more than 11" 4. Top of Cooking Surface
from the rear edge of the cooking hazard to
the front edge of shelf/obstruction.
Notes:
When protecting ranges in accordance with these low proximity recommendations, the following minimum
pipe requirements must be met to prevent splash:
Minimum of 16' of pipe, 1 tee & 4 elbows prior to the first R nozzle protecting a low-proximity range.
Minimum 6.5' of pipe after the tee.
Minimum of 6 flows in the system.
32
Range with Upright Obstruction
Salamander/Cheesemelters that are mounted over range(s) require dedicated coverage. Coverage for
range w/upright obstruction is 18' wide by 26" long (deep) per nozzle. The R nozzle must be positioned at
the left to right edge and centered on the depth of the protected area. One R nozzle can provide protection
for ranges 18 inches wide by 26 inches deep. Two R nozzles can provide protection for a range 36 inches
wide by 26 inches deep. Additional nozzle(s) must be used for ranges exceeding 18" in width, provided no
single nozzle coverage exceeds 18" max-width. Refer to Figure 33 for an example of modular coverage
using two nozzles. Salamander/Cheesemelters should follow appliance coverage for "Upright Broiler!
Salamander Protection" on page 28.
All dimensions fixed unless otherwise noted (e.g., mm/max).
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 33 - Range with Upright Obstruction
RNozzle 3. 45° Elbow
Shelf/obstruction that extends more than 11"
from the rear edge of the cooking hazard to the
front edge of shelf/obstruction.
ADP Nozzle, per Upright Broiler/Salamander
protection
Top of Cooking Surface
Notes:
When protecting ranges in accordance with these low proximity recommendations, the following minimum
pipe requirements must be met to prevent splash:
Minimum of 16' of pipe, 1 tee & 4 elbows prior to the first R nozzle protecting a low-proximity range.
Minimum 6.5' of pipe after the tee.
Minimum of 6 flows in the system.
33
Agent Distribution Piping
The agent distribution piping shall be 3/8" NPT Schedule 40 black iron, chrome-plated or stainless-steel
pipe and fittings. Fittings shall be minimum class 150. The pipe for the nozzle drops cannot be sleeved in
steel but can be made from polished stainless steel, or polished chrome-plated black iron.
Galvanize pipe or fittings must not be used. Pipe thread or compound shall not be used.
Distribution piping can be run in single cylinder or dual cylinder, manifold configurations. Refer to page 35
for single cylinder configuration details. Refer to page 37 for dual cylinder configuration details.
The distribution network consists of a supply line and all applicable branches depending on the protected
hazards. Branch lines include the plenum branch, duct branch, overlapping nozzle appliance branch (TF1
nozzle), and dedicated nozzle appliance branch (ADP).
The supply line is defined as the run of all pipe and fittings from the tank outlet to the last branch line,
including fittings at the start of all branch lines. All branch lines start at the outlet of the applicable supply
line fitting and do not include the supply tee.
A plenum branch is defined as the run of all pipe and fittings from the supply line tee outlet to the plenum
nozzle(s).
A duct branch is defined as the run of all pipe and fittings from the supply line tee outlet to the duct
nozzle(s).
An overlapping nozzle appliance branch is defined as the run of all pipe and fittings from the supply line tee
outlet to the TF1 nozzle.
A dedicated nozzle appliance branch is defined as the run of all pipe and fittings from the supply line tee
outlet to the ADP nozzle.
Figure 34 - Distribution Piping
Duct Branch Line
Supply Piping
Hood Penetrations
Overlapping Branch Line
Dedicated Appliance Branch
Line
Plenum Branch Line
34
Single Cylinder Nozzle and Piping Parameters
A single cylinder supports up to 6 flow points.
Table 6 - Single Cylinder System Configurations
TFI Nozzle Qty ADP Nozzle Qty
3 0
2 2Max
Table 7 - Agent Distribution Piping Limitations for Single Cylinder System
Pipe Section Max Pipe Length (ft) Max Number of Elbows
Supply line 40 10
Overlapping Nozzle Appliance 3.5 2 Branch (TF1)
Dedicated Nozzle Appliance 5 3 Branch (ADP)
Plenum Branch 3 2
Duct Branch 3 2
Notes:
Tees allowed in supply line only, maximum of 4
Additional elbows are permitted on branch lines, provided linear pipe length is reduced by
corresponding equivalent length (1.3 ft per 900 elbow, 0.6 ft per 450 elbow).
For example: a 3/8" steel elbow has an equivalent length of 1.3 ft. An ADP appliance branch may use 4
elbows, provided the total linear pipe is reduced by 1.3 ft (e.g., from 5 ft to 3.7 ft). Additional pipe cannot be
added in lieu of fittings, as pipe volume limits could be exceeded.
Maximum 6 ft vertical rise of supply line above cylinder outlet.
Maximum 2 ft vertical rise of duct or plenum branch above supply line.
Maximum 6.75 ft linear pipe between two most remote branch tees on supply line.
Minimum 7 ft pipe and 3 elbows before a range w/o shelf or fryer to prevent splash.
Minimum of 7 ft pipe and 2 elbows before a wok to prevent splash. Furthermore, a total of 10 ft pipe,
6 elbows, and minimum of 4 flows are required in the complete pipe network.
Minimum 7 ft pipe and 2 elbows before a range with shelf to prevent splash. Furthermore, a total of
10 ft of pipe, 6 elbows, and a minimum of 5 flows are required in the complete pipe network.
35
Table 8 - Single Cylinder with Additional ADP Nozzles (Recommended)
Max Total Max Total Max Totél
TF Nozzle ADP Nozzle Max Total Max Supply Max Total Max Total j Overlapping Appliance Combined
Qty Qty System Pipe Line Pipe Overlapping Appliance Branch Branch Branch Branch Pipe Branch Pipe Elbow Elbows Elbows
1 4 Max 50' 26.5' 3.5' 20' 2 8 10
0 6 Max 50' 20' 0 30' 0 10 10
Notes:
The combined total linear pipe (supply, overlapping branches, and ADP nozzle branches) must not
exceed 50'.
Max Supply Line Pipe can be increased from the values above if the total combined overlapping and
ADP branches are reduced by a corresponding amount.
Individual branch limitations must be maintained per the UL/ULC listed limits (e.g., max 5' pipe & max
3 elbows for a dedicated ADP nozzle branch).
The notes from the UL/ULC listed single cylinder piping table must be followed (e.g., vertical rise,
splash requirements).
Duct or plenum branches may be substituted for dedicated ADP appliance branches per the above
table, provided the individual branch limitations are maintained per the UL/ULC listed limits (e.g., max
3' pipe & max 2 elbows for an individual duct/plenum branch).
The R nozzle provides a wider spray angle than the ADP nozzle, the nozzles are identical in flow
points and flow rate. Therefore, the R nozzle may be used as a substitute for the ADP nozzle for low-
proximity range protection.
36
Dual Cylinder Nozzle and Piping Parameters
A dual cylinder system supports up to 12 flow points. Dual cylinder can be piped in series or parallel with a
maximum of 24" of pipe between cylinders.
Table 9 - Dual Cylinder System Configurations
TFI Nozzle Qty ADP Nozzle Qty
6 0
5 2Max
4 4Max
Table 10 - Agent Distribution Piping Limitations for Dual Cylinder System
Pipe Section Max Pipe Length (ft) Max Number of Elbows
Supply line 44 10
Overlapping Nozzle Appliance Branch (TEl) 3.5 2
Dedicated Nozzle Appliance Branch (ADP) 5 3
Plenum Branch 3 2
Duct Branch 3 2
Notes:
Tees allowed in supply line only, maximum of 8.
Additional elbows are permitted on branch lines, provided linear pipe length is reduced by
corresponding equivalent length (1.3 ft per 90° elbow, 0.6 ft per 45° elbow).
For example: a 3/8" steel elbow has an equivalent length of 1.3 ft. An ADP appliance branch may use
4 elbows, provided the total linear pipe is reduced by 1.3 ft (e.g., from 5 ft to 3.7 ft). Additional pipe cannot
be added in lieu of fittings, as pipe volume limits could be exceeded.
Maximum 6 ft vertical rise of supply line above cylinder outlet.
Maximum 2 ft vertical rise of duct or plenum branch above supply line.
Maximum 13.5 ft linear pipe between two most remote branch tees on supply line.
Minimum 7 ft pipe and 3 elbows before a range w/o shelf or fryer to prevent splash.
Minimum of 7 ft pipe and 2 elbows before a wok to prevent splash. Furthermore, a total of 10 ft pipe,
6 elbows, and minimum of 4 flows are required in the complete pipe network.
Minimum 7 ft pipe and 2 elbows before a range with shelf to prevent splash. Furthermore, a total of
10 ft of pipe, 6 elbows, and a minimum of 5 flows are required in the complete pipe network.
37
Table 11 - Dual Cylinder with Additional ADP Nozzles (Recommended)
Max Max Max Max Max Max Max
TF ADP
5'°r Supply Total Total Total Total Total
Nozzle Nozzle Line Overlapping Appliance Overlapping Appliance Combined
Y Qty Pipe p Pipe p
Branch Branch Branch Branch Branch
Pipe Pipe Elbow Elbows Elbows
3 6 Max 70' 29.5' 10.5' 30' 6 14 20
2 8 Max 70' 27' 7' 36' 4 16 20
1 10 Max 70' 21.5' 3.5' 45' 2 18 20
0 12 Max 70' 20' 0 50' 0 20 20
Notes:
The combined total linear pipe (supply, overlapping branches, and ADP nozzle branches) must not
exceed 70'.
Max Supply Line Pipe can be increased from the values above if the total combined overlapping and
ADP branches are reduced by a corresponding amount.
Individual branch limitations must be maintained per the UL/ULC listed limits (e.g., max 5' pipe & max
3 elbows for a dedicated ADP nozzle branch).
The notes from the ULJULC listed dual cylinder piping table must be followed (e.g., vertical rise, splash
requirements).
Duct or plenum branches may be substituted for dedicated ADP appliance branches per the above
table, provided the individual branch limitations are maintained per the UL/ULC listed limits (e.g.,
max 3' pipe & max 2 elbows for an individual duct/plenum branch).
The R nozzle provides a wider spray angle than the ADP nozzle, the nozzles are identical in flow
points and flow rate. Therefore, the R nozzle may be used as a substitute for the ADP nozzle for low-
proximity range protection.
Nozzles
Distribution piping and nozzles are factory-installed. Verify that the nozzles and distribution network are
installed in accordance with the design and installation parameters for all protected hazards, as set forth in
this manual.
NOTE: The EWC extinguishing system design must be reviewed if any hazard changes have been
made, including (but not limited to): appliance type, appliance sizes, appliance location, factory
pre-piping or nozzles, plenum size or configuration, and duct size or configuration.
Ensure nozzles are installed without Teflon tape or pipe compound.
Ensure nozzles are securely installed. DO NOT OVERTIGHTEN.
Ensure nozzle seals are properly oriented in the nozzle cap. The seal must be installed with the brass
retaining ring (attached to the foil seal) facing towards the nozzle.
Ensure nozzle caps and foil seals are installed on each nozzle and secure. Nozzle caps should be
wrench-tightened 1/4 to 1/2 turn past hand-tight.
NOTE: Do not over-tighten or foil seals could be damaged.
Ensure all nozzle types, placement, and aim are in accordance with the limitations in this manual.
Optional nozzle swivel adapters tan be used to achieve proper aim on dedicated appliance protection
nozzles only.
Refer to Figure 9 on page 10 for details on nozzle(s).
39
Gas Shut-Off Valves
The electric gas valve is held open in the energized state, and closes when de-energized via the output
relay of the control panel. A listed manual reset relay is required to ensure manual reset prior to fuel being
restored in accordance to NFPA17A.
Gas valves are designed to shut off the flow of gas to the kitchen appliances in the event of fire system
activation. Electric gas shutoff valves must be installed with an upstream strainer to prevent debris from
prohibiting gas valve function. New pipe, properly reamed and cleaned of metal burrs, should be used.
Proper care is needed to ensure that the gas flow is in the same direction as indicated on the gas valve
and strainer. Do not over-tighten pipe connections. Apply pipe dope to the male threads only. If necessary,
install a drip leg in the gas line in accordance with the Authority Having Jurisdiction (AHJ).
120V AC gas valves 3/4" - 2" can be mounted with the solenoid in any position above horizontal.
120V AC gas valves 2-1/2" - 3" must be mounted with the solenoid vertical and upright. The pipe must be
horizontal.
All 24V DC gas valves must be mounted with the solenoid vertical and upright. The pipe must be
horizontal.
Proper clearance must be provided in order to service the strainers. A minimum of 4" clearance distance
must be provided at the base of the strainer.
Figure 35 - Electric Gas Valve
DIM "F"
Electric Gas Valve
FLOW
DIMC" - DIM
DIM "G"
V
Strainer
DIM
DIM pB"
V
V 4" Minimum Clearance
Table 12 - Gas Valve Details
Gas Valve Strainer Size DIM A" DIM B" DIM C' DIM D DIM F DIM G"
8214235 4417K64 3/4" 6-15/16" 5-15/16" 4-1/2" 11-15/16" 9-7/8"
8214250 4417K65 6-15/16" 5-15/16" 4-7/8" 5-3/16" 12-13/16" 10-11/16"
8214265 4417K66 1-1/4" 7-5/8" 6-3/8" 5-1/8" 5-15/16" 13-1/2" 12-1/16"
8214275 4417K67 1-1/2" 7-5/8" 6-3/8" 5-3/4" 6-3/16" 14-1/8" 12-5/16"
8214280 4417K68 7-5/8" 6-3/8" 7-1/4" 7-13/16" 15-5/8" 13-15/16"
8214290 4417K69 2-1/2" 10-5/16" 8-1/16" 8-7/8" 9-7/8" 18-15/16" 18-5/8"
8214240 4417K71 10-5/16" 8-1/16" 10" 10-15/16" 20-1/16" 19-11/16"
40
Fire Protection System Firestat
NOTE: There must be adequate clearance above the hood to access components. 18-inches of
service clearance is recommended.
The Firestat is a device installed in the riser of the hood, at the duct connection, that measures
temperature. The standard temperature setting is 360°F. Depending on heat produced by appliance, a
higher rated temperature Firestat will be required. If a temperature higher than the setpoint is sensed, the
Firestat contacts will close and energize the electrical control board. The fire system will activate, the
system will run for a minimum of 15 minutes and then recheck the temperature. If the temperature is still
higher than the setpoint, the process restarts immediately.
The Firestat has 2 black wires and 2 white wires. These wires must be connected to the supervised loop.
Use high-temperature wiring when installing Firestat components. High-temperature wire-nuts or terminal
blocks must be used. There must be one sensor installed for every 12 feet of hood length.
Multiple sensors are wired in parallel in the supervised loop. The Firestat may be installed on the opposite
side of the quick seal for access in the duct.
Non-Solid Fuel Appliances (Rated 450°F)
Non-solid fuel appliances rated for 450°F will not require additional firestats, regardless of the configuration
and length of ductwork.
Non-Solid Fuel Appliances (Rated 6000F)
Non-solid fuel appliances rated for 600°F will require downstream detection if the duct run contains any
horizontal section over 25 feet in length. Downstream detection should be installed at the end of a
horizontal section. Duct layouts that include less than 25 feet of horizontal ductwork will not require
additional detection.
NOTE: When additional Firestats are required, install in an accessible location near an access
door, hood riser, or fan. The door will provide access to install, clean, and replace the Firestat
when needed. If a PCU is equipped with electronic detection, PCU Firestats can serve as
downstream detectors, if present. The temperature rating of the Firestat in the duct must always
match the temperature rating of the Firestat in the riser.
41
Figure 36 - Firestat
Table 13 - Firestat Components
Item Number Part Number Description
12-F28021-005360 Normally Open, Close on Rise @ 360°F
12-H28021-005-OT-600 Normally Open, Close on Rise @ 600°F
2 32-00002 1/2" NPT Quik Seal (Adapter Body)
3 32-00002 1/2" NPT Quik Seal (Gasket)
4 N/A Hood/Duct (External Surface)
5 N/A 1-1/8" - 1-1/4" Diameter Hole
6 32-00002 1/2" NPT Quik Seal (Lock Washer)
7 32-00002 1/2" NPT Quik Seal (Nut)
8 59361-1/2 Extension Ring
9 100-BW Extension Ring Cover
10 N/A 2White Wires
11 N/A 2Black Wires
42
Fire Protection Manual Actuation Device
The push/pull station is a remote manual actuation device to activate the
fire system. This remote manual actuation device (push/pull station)
contains one set of normally open contacts and mounts to any standard
single gang junction box. When the front button is pressed, the electrical
connection to the fire system is completed, thus activating the fire system.
The remote manual actuation device (push/pull station) should be
mounted at a point of egress and positioned at a height determined by the
Authority Having Jurisdiction (AHJ). This position is usually 10 to 20 feet
from hood and 42 to 48 inches above the floor. Multiple remote manual
actuation devices (push/pull stations) are acceptable to use in the fire
system and are wired in parallel per the electrical schematic. The remote
manual actuation device (push/pull station) is reset by twisting the push-
button clockwise until the internal latch is released.
Figure 37 - Activation Device
The clear protective cover must be installed to protect the device from accidental activations. This cover is
provided as part of the manual actuation device. Below are the part numbers for the devices and
replacement parts.
Note: When connecting the wires to the push/pull station, do not twist the wire ends together.
Insert each wire on the opposite side of the screw.
Table 14 - Activation Device Part Numbers
Part Description Part Number
Push-Button with Clear Cover STl-SS2431
Push-Button with Clear Cover and Horn STl-5S2441
Replacement Clear Cover STI-COVER
Blue Extension for Surface Mounted Push Stations SF-1 331
Blue Junction Box with Deep Back STI-KlT71101AB
Normally Open Contact STl-10196
Normally Closed Contact STl-10198
Contact Housing Assembly SF-10197H
Trouble Input Wiring
Trouble contacts and supervision switches from each device should be connected to the trouble input of
the building fire alarm panel to indicate a trouble condition.
Figure 38 - Wiring Connection for Trouble Contact
Building Fire Alarm
CORE Control Panel Trouble Contact
End of Line Device
Building Fire Alarm -Trouble Input Wiring
43
Figure 40 - Power Supply
Battery Backup
Important!!
The battery backup system requires that the batteries be changed every 2 years, from the date of
fire system commissioning, maximum Failure to do this will result in a void in product reliability
and may cause severe dimage to facility due to loss of fire protection
Figure 39 - Battery Backup
The fire protection system contains a battery backup. During a
power loss, the "Fire System Activated" light will flash 11 times
between pauses indicating the power loss.
The batteries must be replaced every 2 years, from the date of fire
system commissioning. Part number PS-1270-F2, two are
required. Although the batteries are hot-swappable, which means
they can be replaced while there is input power to the control, for
your safety, all sources of power must be removed from the
control before replacing the batteries. To replace the batteries,
unplug the battery cable from the Ji connector on the electrical
board (PCBCORE). Then remove the retaining strap holding the
batteries in place. Remove the batteries from the cabinet.
Transfer the fuse and cable set from the old batteries to the new
batteries being extremely careful to observe the RED and BLACK
lead and terminal colors. Reinstall the batteries in the cabinet and
reconnect the battery plug to Ji. The batteries are lead-acid type
and are recyclable; please dispose of the old batteries
properly.
During extended periods of inactivity where the fire protection
system will be without AC power for more than 2 days, such as a
shutdown or natural disaster, it is best to decommission the fire
system by disconnecting the batteries. This will prevent any
damage to the batteries through complete discharge. When the
system becomes active again, commission the system by
reconnecting the batteries and allow the batteries to charge for
48 hours.
Power Supply Adjustment
To properly charge the batteries, the power supply must be
adjusted to output 27.5V DC. This can be checked with an
accurate digital voltmeter placed across Terminals HiD and
N1D. To adjust the output voltage, place a small flat-bladed
screwdriver into the yellow dial. Turn the dial clockwise, this will
increase the voltage.
44
Fire Protection System Printed Circuit Board
The fire protection system printed circuit board (PCBCORE) is a microprocessor-based controller that
provides all the necessary monitoring, timing, and supervision functions required for the reliable operation
of the fire system. Under normal conditions, the "Fire System Activated" light is flashing one brief flash
every 3 seconds, indicating the system is armed and ready. If a fault is detected anywhere in the system,
an audible alarm will periodically sound, and the "Fire System Activated" light will flash a fault code to
indicate the fault that was detected. This fault code consists of a series of flashes followed by a pause.
Simply count the number of flashes between the pauses and refer to the chart below to find the cause of
the fault. Any fault is extremely important and must be corrected and rectified immediately to ensure proper
operation of the fire system.
The connections for building fire panels are located at ALl and AL2 as dry contacts.
Figure 41 - Printed Circuit Board
R6 021 32 432 1 WASH I IJ9.. C2 Cl 12345678 1'- I UB — ........ r)
D4052190103 02 _____________ _____ _ 432 1 •U••U•• I
___________
4L1 4L2 ij. RIG •• , , LLJ
D23
_______
OR3 j4 2 FIRE 4L4RM )• R14 • 0143
I I I S11• R3•RN4RN C20 I • _____________ -LIII]-. .-[III}.o • R12 • '" • -
____ I...... C19•I•••••••••••I
1.11.1. CIO • I ..
• •
:: EJ OR36 16•-IIEJ-. • fI- RJ• • -I=II1I-• 1.1 .. CII • I .. JcIe•I•
XI ••••S•S•
, •
C2? C25 027 •. •çJ- .-EIIIIJ-• •-LIIIJ- Il Il e . I.. • • U • S• CI3 .1.. •u •su3 [.135 C3 1122 KI 1111 22 1117
025 • 27 220 KG 1114 K5
I IIsIii CI5 .1.. •• .1 I. I 11.11.1. CI6 .1.. •• •• I LH
______
I. •11• .Il.-•• •1• II •ii.i. CI4 .l...S.. .1 'IlIHIIIII
I 11.11.1. CI? •I...........I XXI IIjI!j. C9 .1 ......... I IlIlIllIllS 0241 II ______________________
6I IS 3.j. 3J• 2I5 DI •
C34 • C32 [.!1
02j
i••ii•• •• •• •• •• ..I cI[..3[.j 4 B •••l I
o0 Rl9? f •....... . .iI ii
012 1113 (IS)020 D9-[fl-U .-[I]-.00 u5........u6........I:. CXX I I .ffl•... •.-LIII-' PCBCORE
-EIIII-. -- __________ ft •••••••U ••••S••UR2 •..•.S.. _________ 0141 07L1 • C24 R?UIi[,i 0I0
U4 U3'. • ••• •
I Is
• • S •S • •1•1 • I.I.........II.. 4 4!0146 C 11 a., lB. —1 DSJ3
' . 34,-,
U I•••SSI••SI••S•SSr]
1 ft MODBUS
45
Connector Descriptions
Note: Some connections may not be used dependent on system configurations.
Connector JI contains battery pack connections for I II
battery charging and monitoring. D1
-1 M
7tJ
i
Pin 1 - Battery Positive Pin 2 - Battery Negative
Connector J2 contains Supervised Sensor Loop SJ2 4 3 1 connections Ie
Pin 1 - Start Positive Loop Pin 3 - Finish Negative Loop
Pin 2 - Start Negative Loop Pin 4 - Finish Positive Loop
Connector J3 contains Power Supply and Device
connections I
* 000000009000000
F
Pin 1 and Pin 2 - Positive Input, Power Supply Pin 10— N/A
Pin 3 and Pin 4— Negative Input, Power Supply Pin 11 - Drive Output, Fire Relay
Pin 5— Positive Output, Gas Valve Solenoid Pin 12 -Drive Output, 100% Relay
Pin 6 - Positive Output, Surfactant Pump Pin 13 - Drive Output, Trouble Relay
Pin 7 - Positive Output, Release Valve Solenoid Pin 14 - Drive Output, Wash Relay
Pin 8 and Pin 9— 24V DC Input, Shutoff Valve Pin 15— Drive Output, Spare Relay
Supervision Pin 16— Drive Output, Auto-Man Relay
Connector J4 contains Power Supply and Device
connections I
il-i
Pin 1 - Positive Input, Power Supply Pin 8 - Input, Pump Prime/Reset Push Button
Pin 2 -Output, Panel Mounted Audible Alarm Pin 9 - Input, Gas Cartridge/Pressure Switch
Pin 3—Output, Panel Mounted LED Fire/Fault Pin 10— Input, Fan Switch
Indicator Pin 11 - Input, Gas Valve Reset Push Button
Pin 4 - N/A Pin 12 - Input, Door/Tamper Switch
Pin 5—Drive Output, Cooking Equipment Disable Pin 13 - Input, Test Mode
Relay Pin 14 - Modbus Network, Common Signal (C)
Pin 6— Negative Input, Power Supply Pin 15— Modbus Network, Negative Signal (A)
Pin 7 - N/A Pin 16 - Modbus Network, Positive Signal (B)
46
Connector J5 and J6 is for RJ-45 connections J6 .• i01
0 ii •
MODBUS
These two connections are for the Modbus Network. This network may be used by non-fire system
related equipment to monitor operating conditions of the electrical (PCBCORE) board.
Connector J7 Interlock Network connections
n
C)
Øc w
U.
- -
Pin 1 - Interlock Network, Common Signal (C) Pin 3 - Interlock Network, Positive Signal (B)
Pin 2 - Interlock Network, Negative Signal (A)
Connector J8 Interlock Network connections J8
1=0=01
Factory Use Only
Connector J9 Building Fire Alarm connections for a
set of normally open dry contacts. These are
provided for signaling a building fire alarm panel if a
J9
S S
fire condition is present.
LI AL2 FIRE ALARM
Pin 1 - Dry Contact Closure Pin 2 - Dry Contact Closure
Connector J10 contains Supervised Sensor Loop
110 connections 4 3 2 1 _j
L
....L1
Pin 1 - Start Positive Loop Pin 3 - Finish Negative Loop
Pin 2 - Start Negative Loop Pin 4 - Finish Positive Loop
47
ELECTRICAL
WARNING!!
Disconnect power before installing or servicing control. High voltage electrical input is needed
for this equipment. A qualified electrician should perform this work.
Before connecting power to the control package, read and understand the entire section of this document.
As-built wiring diagrams are furnished with each control package from the factory and are either attached
to the door of the unit or provided with the paperwork packet.
Electrical wiring and connections must be made in accordance with local ordinances and the National
Electric Code, ANSI/NFPA70. Verify the voltage and phase of the power supply, and the wire amperage
capacity is in accordance with the unit nameplate.
ATTENTION: LOW-VOLTAGE DC OR SIGNALING WIRE SHOULD BE ROUTED IN SEPARATE
CONDUIT FROM ALL AC VOLTAGE SOURCES.
Always disconnect power before working on or near this equipment. Lock and tag the disconnect
switch or breaker to prevent accidental power-up.
There are multiple electrical connections required for this control. I20V AC should be wired to
terminals HI and NI. If the hood is equipped with a separate light circuit, I20V AC should power this
circuit per the as-built schematic. HI and NI should not be connected to a shunt trip breaker.
Verify that the power source is compatible with the requirements of your equipment. The system wiring
schematic identifies the proper phase and voltage of the equipment.
Before connecting the control package to a power source, verify power source wiring is de-energized.
Secure the power cable to prevent contact with sharp objects.
Do not kink power cable and never allow the cable to come in contact with oil, grease, hot surfaces, or
chemicals. Release solenoid cables must not come in contact with hood surfaces.
If the control package is a wall-mount system, a duct mounted temperature sensor will need to be
wired. The temperature sensor must be wired to terminal blocks, as indicated on the wiring schematic.
If the system contains additional firestats, they must be wired into the supervised loop.
If the control is a wall-mount system, the hood lights wiring will need to be wired to terminals "B" and
"W." Verify connections on wiring schematic.
Before powering up the system, make sure that the interior of the control package is free of loose
debris or shipping materials.
If any of the original internal wire supplied with the system must be replaced, it must be replaced with
type THHN wire or equivalent.
All field-supplied wire for the optional fire system release solenoid or firestat must be high temp wire
rated for 842°F minimum (#44160106.FE9 White and #44160106.FE0 Black).
The battery must be plugged into the connector labeled JI on the electrical board (PCBCORE) after
wiring is complete.
All gas appliances under the hood must shut down in the event of an AC power loss. All electric
appliances will shut down on building power loss.
It is recommended to use Belden #6320UL, 18 Gauge, plenum-rated wire for the supervised loop that
does not come in contact with the hood. It is recommended to use Belden #88760 for the fire system
interlock network and CAT-5 for Modbus communications.
All exterior wiring connections to the PCU must be run inside liquid tight conduit. This includes the
supervised loop and airflow switch wiring.
IMPORTANT!: The battery backup for the fire protection system produces output power even when
main power is disconnected from system. When performing major electrical service to the control,
the battery backup must be disconnected then reconnected before commissioning.
48
I
Wire Ampacity Rating
The load current rating and the over-current protection for conductor types shall not exceed 15 amperes
for 14 AWG, 20 amperes for 12 AWG, and 30 amperes for 10 AWG aluminum and copper-clad aluminum
after any correction factors for ambient temperature and number of conductors have been applied.
Table 15 - Copper Wire Ampacity @ 75°C
Wire Size AWG Maximum Amps
14 15
12 20
10 30
8 50
6 65
4 85
Distance Limitations
Wiring connections to remote fire protection system(s) must use shielded twisted pair wire. The maximum
length of this connection is 1000 feet.
Wire size is an important consideration when making the connections between the fire protection system
control package and a gas valve. Refer to Table 16 for maximum wiring distance between the system and
remote gas valve.
Table 16-Wiring Maximum Distance
Wire Gauge Distance (Feet)
12 1049
14 660
16 414
18 260
20 164
22 103
24 64
Fire Alarm Contacts
The fire protection system is equipped with normally open contacts that can be connected to the premise
Fire Alarm Control Panel (FACP) (terminals AU and AL2). During a fire condition, the contacts will close
and trigger the premise FACP to initiate a general fire alarm.
Figure 42 - Fire Alarm Reference
Building Fire Alarm
Control Panel Fire Alarm Contact
End of Line Device
Alarm Input
49
Fire S"-''
Pipin(
Fire
Fire Group
Fire Groups are for the purpose of using multiple CORE controlled fire systems and grouping specific fire
systems together. This will allow the user the ability to assign different zones for independent activation.
In order to set a fire group, you will need to set the CORE board DIP switches to:
Table 17 - Fire Group DIP Switch Position
6 7 Fire GroupNümber
Open Open 1
Closed Open 2
Open Closed 3
Closed Closed 4
Note: Every panel with matching fire group settings (DIP switches 6 and 7) will activate
simultaneously in a fire condition.
Figure 43 shows an example of different zones on separate fire groups, but still connected via the
interlock network. In the example, when 2 Fire groups (01 and 02) are assigned on the CORE boards, and
if a fire condition exists in any one group, it will NOT activate the other fire group although both are
connected to the same interlock network.
Fire Group 01 CORE board DIP switch setting will be set to: Switch 6 Open and Switch 7 Open.
Fire Group 02 CORE board DIP switch setting will be set to: Switch 6 Closed and Switch 7 Open.
Refer to "Typical DIP Switch Arrangement" on page 59 for setting multiple CORE controlled fire
systems.
Figure 43 - Fire Group Reference
i— Fire Group 1
E Control Interlock
)rk: CA, CB, CC
EBKPq
BK CA
RD RDCB
Cc CC
Wired to
Master CORE
Wired to
Master CORE
Wired to
Master CORE
50
Fire Protection System Supervised Loops
NOTE: There must be adequate clearance above the hood to access components. Service
clearance of 18-inches is recommended.
The supervised loops are integral to proper operation and activation of the Fire Protection System. All
systems have two supervised loops; each loop consists of two conductors, one positive and one negative.
One loop is dedicated to all sensors, while the other is dedicated to all manual actuation devices (push/pull
stations). The supervised loop connections are located at the front edge of the hoods for accessibility.
Connections beyond the hood, like the connections at the manual actuation device, must be made with a
plenum-rated wire. It is recommended to use a two-conductor Belden 6320UL, 18 AWG, wire, or similar for
these connections. Refer to Figure 44 for supervised loop details.
Connections to the firestat will use two terminal blocks. One for an incoming loop and one for an
outgoing loop.
Flexible metallic conduit is used to route the wiring that connects the firestat to the remote loop
junction box. Secure conduit to hood hat channel when possible.
The system contains two circuit ceramic terminal blocks for connecting from one hood to the next.
Figure 44 - Supervised Loop Connections
Firestat
Conduit
Junction Box
Ceramic Terminal Block
For connections on or above the hood, use Type MG or MGT wiring with High-Temperature Terminal
junction blocks. A Supervised Loop Connection kit is available to connect back to back or end to end
hoods. This kit will come with the necessary hardware and wire.
Table 18 - Supervised Loop Components
Connection Kit Part Number Length Location
SLPCON-03 3 Feet End to End Hoods
SLPCON-05 5 Feet End to End Hoods
SLPCON-10 10 Feet End to End and Back to Back Hoods
SLPCON-1 5 15 Feet End to End and Back to Back Hoods
SLPCON-20 20 Feet End to End and Back to Back Hoods
High Temperature Supervised Loop Component Part Number
Type MG Wire, White, 16AWG 441601 C6.FE9
Type MG Wire, Black, 16AWG 441601 C6.FEO
Two Conductor High Temp Terminal Block 20M4174
51
OPERATION
The EWC extinguishing system is electrically operated via the applicable fire alarm control panel. The
system can be activated automatically via an electric thermal detector or manually via a remote manual
actuator. The EWC extinguishing system is electrically operated via the PCBCORE control board. The
system can be activated automatically via a Firestat or manually via a remote manual actuator. Since the
EWC extinguishing system is electrically operated, the applicable fire alarm control panel requires AC
input power with a battery backup system. Reference the applicable control panel manual for wiring and
compatibility.
When one of the system's Firestat(s) detectors senses a temperature hotter than its internal set-point (e.g.,
in the event of a hood fire), or when a remote manual actuation device (push/pull station) is pushed, an
electric signal is sent to the tank-based fire protection release solenoid via the fire alarm control panel
releasing circuit. The electric release solenoid is energized, allowing pressurization of the pneumatic
actuator(s). The actuator's plunger(s) will depress into the tank valve body, releasing agent to flow to the
hood duct, plenum, and appliance nozzles.
When the fire extinguishing system is activated, the applicable fire alarm control panel simultaneously
shuts down all gas and electric appliances under the protected hood(s), shuts down make-up air and/or
exhaust where applicable, and activates the building fire alarm where applicable.
A means of manual reset is required for shut-off devices to ensure manual reset prior to fuel or power
being restored in accordance with NFPA 17 and NFPA 96. The electric gas shut-off valve is used in
conjunction with a UL/ULC listed manual reset relay, refer to "Gas Shut-Off Valves" on page 40.
Test Mode Overview
The fire protection system has an integrated option for testing. This test mode, when active, will disable the
release solenoid and prevent the fire extinguishing agent from spraying on the appliances. It will allow
activation of the fire system, audible alarm, shunt trip breaker (if applicable), and shut down of appliances
via gas valve reset relay.
All additional PCBCORE controlled packages that are attached to the system must be in "Test Mode." This
includes additional fire protection systems, Pollution Control Unit with CORE, and other hood-mounted
CORE controlled protection systems.
Please note that the appliances must be started before test mode is entered on any PCBCORE protection
package for proper demonstration of this function. If the fire protection system is left in "Test Mode" for
more than 15 minutes, the appliances will shut down. This is to prevent cooking operations from occurring
while the appliances and ventilation system are not protected.
52
Reset Overview
There are multiple actions required to reset the fire system. The following must be completed by a
Certified Fire System Technician.
The duct firestat must be cooled below its internal set point.
The remote manual actuation device (push/pull station) must be reset by twisting the button clockwise
until it resets.
Press the "Push To Reset Fire System" button.
Reset the pneumatic actuators (PKA, SVA), refer to "Disconnecting Service Tank/Re-arming
System" on page 62.
Note: The firestat must be cool, and the remote manual actuation device (push/pull station) must
be reset for this button to work.
The fire system must be re-commissioned per the manufacturer's recommendations and guidelines by an
authorized fire system distributor and/or authorized service agent.
After a fire, full inspection by a certified professional must be conducted prior to restarting the fire system.
Figure 45 - Fire System Reset
LED Indicator
Alarm Speaker
Panel Latch
Reset Button
Test Mode/Fire System Armed
Switch
53
Appliance and electrical shut down is achieved via the applicable fire alarm control panel relay, in
conjunction with UL/ULC listed enclosed industrial control equipment or magnetic contactors of
appropriate rating. These must be used in conjunction with a UL/ULC listed manual reset relay, refer to
Figure 46. All wiring is to be in accordance with the applicable manufacturer's instructions for the fire alarm
control panel, gas shut-off valve, manual reset relay, and contractor supplied shut-off devices. All wiring
must be in accordance to NFPA 70 and the Authority Having Jurisdiction (AHJ).
When a building fire alarm system is present, the fire alarm control panel must be connected in accordance
with the NFPA 72 such that the actuation of the EWC extinguishing system also activates the fire alarm.
Reference the applicable control panel manual for wiring and compatibility.
Figure 46 - Reset Relay
Ground
Neutral
Hot
I Switch Line I I (supplied
I by others
Manual I I
Reset I 10 I IX
Relay I I
Load (supplied
by others)
Fire Alarm Control Panel
NC
C
NO
* UL/ULC listed enclosed industrial control equipment or
magnetic switch of appropriate rating. Contacts closed when
coil is energized.
54
TROUBLESHOOTING
Table 19 lists out causes and corrective actions for possible problems with the system. Review this list
prior to consulting manufacturer.
Table 19 - Fire Protection System Troubleshooting
Problem Potential Cause Corrective Action
Broken supply fan belt Replace fan belt. Exhaust Fan On and Supply Fan
Fire system not armed Fire system distributor must arm 4 will not iai.. L fire system.
Fire System Activated Light On i Fire system s activated Verify fire is out and reset fire system.
Audible Alarm is On Fire system is activated Verify fire is out and reset fire system.
A fault code is flashing on the A fault has been detected in the Count the flashes and refer to
"Fire System Activated" light Fire Protection System Table 20.
Heat has activated the duct
sensor. Remove heat source or let
the system extinguish the fire.
Duct sensor is hot Once heat source or problem is
resolved, press reset button on
the face of the electrical control
Fire System will not turn off package.
Reset remote push station once
fire is out and press reset button
Remote Manual Actuation Device on the face of the electrical control
has been pushed package. Reset remote push
station by twisting clockwise until
reset.
Gas Valve does not close Debris on gas valve seal Fully clean gas valve and strainer.
55
Appliance Shutdown in Fault Conditions
The Fire Protection System is equipped to shut down the appliances if a fault condition is present. Table
20 shows which fault condition affects the appliances' fuel and power sources, alarm muting, and local
trouble relay.
Table 20 - Appliance Fault Conditions
Number
of
Flashes
Fault Condition
Gas Valve Shut Down
Shut Down Shunt Trip
Breaker and UDS Kill
Switch
Mute
Local
Alarm 4
Hour
Reset
Local
Trouble
Relay Local
System
Networked
System
Local
System
Networked
System
Catastrophic Faults
2 Release Solenoid
Pressure Switch x x x x x
Auxiliary Fault x x x x x
5 Micro-controller
Fault
Critical Faults
Supervised Loop
Fault
Important Faults
8 Ground Fault x
10 Battery Voltage
Low x
11 AC Power Failure
12 Door Tamper
Switch x
13 Test Mode x x x x
14 CORE Interlock x
15 Fault on Hood In
Network
16 Fault on PCU in
Network
Local Alarm Muting
Depressing the fire system reset button can mute the local alarm. This will disable the sounder for 4 hours
under specific conditions. Table 20 shows which errors can be muted. It should be noted that the fault will
not clear until the fault condition is corrected.
Test Mode
Test Mode allows the hood to be tested with operational appliances without discharging the system on the
appliances. Once the appliances are started, test mode can be entered without the appliances shutting
down for 15 minutes. However, once the fire system is activated, the shunt trip (electric appliances) and
the gas valve will be locked out until test mode is deactivated.
**During AC power failure, all gas appliances will be shut down. Electrical appliances will shut down on
building power loss.
56
Supervised Loop Wiring Troubleshooting
NOTE: Place the panel in test mode during diagnostic testing.
Prior to troubleshooting, verify all CORE power supplies are set to 27.5 volts. Check all supervised loop
connections. Verify wiring is properly connected and secure. If any of the "Normal Operating Voltages" are
out of range, there is an issue with that loop or associated components/wiring.
Normal Operating Voltages Problem Potential Cause Corrective
Action
Terminal 21 to CORE Power
Supply (-) = 26.5V Open Supervised Loop Locate and repair
Terminal 21 to Terminal 22 = 26.5V between Terminals 21 and faulty wiring in the
Terminal 24 to Power Supply () 24 21-24 supervised
26.5V loop.
Terminal 24 to Ground = 1.8V
Terminal 22 to CORE Power Locate and repair
V Terminal 23 toCORE Power
Open Supervised Loop faulty wiring in the between Terminals 22 and 22-23 supervised Suppl y 23 loop. Terminal 23 to Terminal 24 = 26.5V Supervised
Loop Fault Terminal 101 to CORE Power
Supply (-) = 26.5V Locate and repair Terminal 101 to Terminal 102 = Open Supervised Loop faulty wiring in the 26.5V Push-Station (Terminals 101-104 supervised Terminal 04O5CORE Power 101 and 104)
Supply(-)
Terminal 104 to Ground = 1.8V
Terminal 102 to CORE Power
Supply (-) = OV Open Supervised Loop Locate and repair
Terminal 103 to CORE Power Push-Station (Terminals faulty wiring in the
Supply (-) =
Terminal 103 to Terminal 104 = an) 102d 103 102-103 supervised
loop.
26.5V
Chassis Ground to CORE Power *24V DC CORE Power Locate and repair
faulty wiring in the
Supply (-) 24.4V Supply (-) Wiring or 22-23 supervised
Ground
Fault
Components loop.
**24V DC CORE Power Locate and repair
Chassis Ground to CORE Power Supply (+) Wiring or faulty wiring in the
Supply (+) = 2.7V Components 21-24 supervised
loop.
* Components that may cause this fault are: Gas Valve, Surfactant Pump, Water Solenoid(s),
Release Solenoid(s).
** Components that may cause this fault are: 24V Relays, Trouble Relay (when energized), 24V LED
Lights.
NOTE: If an abnormal reading is present, disconnect potential components/wiring one at a time,
while continuing to take readings, to pinpoint the source of the ground fault.
57
DIP Switch Settings
When set from the factory, switches 1, 5, and 8 are in the Closed (On) positions. Switch 2, 3, 4, 6, 7 are in
the Open (Off) position. These should be considered the default positions and should not be changed.
Table 21 - DIP Switch Settings
DIP Switch # Description
DIP Switch Position Interlock Network Address 1 2 3 4
Closed Open Open Open 1
Open closed Open Open 2
Closed Closed Open Open 3
Open Open Closed Open 4
Closed Open Closed Open 5
Open Closed Closed Open 6 1 through 4 Closed Closed Closed Open 7
Open Open Open Closed 8
Closed Open Open Closed 9
Open Closed Open Closed 10
ClosedF Closed Open Closed 11
Open Open Closed Closed 12
Closed Open Closed Closed 13
Open Closed Closed Closed 14
Closed Closed Closed Closed 15
Open Open Open Open This unit is not part of an interlock network
Set this switch to Closed (On) if this unit has the highest address
switch must be Open (Off)
on the interlock network. Otherwise, this
6 7 Fire Group Number
6 and 7 Open Open 1
Fire Group Closed Open 2
Open Closed
Closed Closed
8 Setting switch 8 to its Closed (On) position connects a 120 Ohm terminating resistor to the interlock network.
This switch must be Closed if this unit is at either physical end of the interlock network cable. Otherwise, it must
be Open (Off).
Figure 47 - DIP Switch
OPEN
Each unit has a unique address based on the DIP switch 1-4 settings, 15 units max on a network.
If address is 0 (all switches off), the unit will not accept or send any network traffic.
The unit that has switch 5 set to on will be the "master" and will be in charge of polling all the units
below it and waiting for a reply. The lack of 3 replies in a row will cause an "interlock network
supervision fault." All units will be polled in a burst every 3 seconds.
For all non-master units, the lack of being polled for 10 seconds will cause an "interlock network
supervision fault."
Any unit detecting a fire condition will broadcast the notification once every second for as long as the
condition persists.
When the Fire condition is cleared, 10 notifications will be sent, one every second.
Any unit detecting a supervisory fault will broadcast the notification every 2 seconds until the condition
is cleared.
When the supervisory fault condition is cleared, 10 notifications will be sent, one every 2 seconds.
58
Typical DIP Switch Arrangement
Only One Fire Protection System Panel on the network:
Core Board # DIP DIP DIP 3' DIP4
-11
DIP DIP 1 DIP 1 DIP
#1 (Hood Master) Closed Open Open Open Closed Open Open Closed
Two Fire Protection System (or CORE) Panels on the network:
Core Board # DIP I DIP 2 DIP 3 DIP 4 DIP 5 DIP 6 DIP 7 DIP 8
#1 (2nd Hood Slave) Closed Open Open Open Open Open Open Closed
#2 (Hood Master) Open Closed Open Open Closed Open Open Closed
Two Fire Protection System (or CORE) Panels on the network:
Core Board # DIP I DIP 2 DIP 3 DIP 4 DIP 5 DIP 6 DIP DIP 8
#1 (PCU Slave) Closed Open Open Open Open Open Open Closed
#2 (Hood Master) Open Closed Open Open Closed Open Open Closed
Three Fire Protection System (or CORE) Panels on the network:
Core Board# DIP DIP DIP DIP 4 DIP DIP DIP DIP
#1 (2nd Hood Slave) Closed Open Open Open Open Open Open Closed
#2 (PCU Slave) Open Closed Open Open Open Open Open Open
#3 (Hood Master) Closed Closed Open Open Closed Open Open Closed
Four Fire Protection System (or CORE) Panels on the network:
Core Board # DIP I DIP 2 DIP 3 DIP 4 DIP 5 DIP 6 DIP 7 DIP 8
#1 (2nd Hood Slave) Closed Open Open Open Open Open Open Closed
#2 (PCU Slave) Open Closed Open Open Open Open Open Open
#3 (2nd PCU Slave) Closed Closed Open Open Open Open Open Open
#4 (Hood Master) Open Open Closed Open Closed Open Open 1 Closed
For additional configurations, refer to Table 21 for the electrical board (PCBCORE) DIP switch settings.
The configurations above are shown with all electrical boards (PCBCORE) in the same Fire Group and
may be configured differently, even if the control panels are on the same network. Every panel with
matching fire group settings (DIP switches 6 and 7) will activate simultaneously in a fire condition.
59
INSPECTION AND TEST
Once installation has been completed, the EWC suppression system must be checked for proper
installation and operation before it can be put into service.
Start-up/Test Procedure
Preparing System for Test
Verify that all solenoid wires are secured and not touching hood.
Place the control panel in test mode and ensure there are no supervision faults.
Verify that the hood, duct & kitchen appliances have not changed (including type, dimensions &
location) from the approved design.
Verify that all cylinder discharge outlets are connected to the system piping, refer to Figure 3 on
page 6.
Verify that all cylinders are secured in their bracket(s).
Verify that the vent plug is properly installed, refer to Figure 14 on page 13.
Verify that a valve cap or optional supervisory pressure switch is installed on each secondary cylinder
Schrader valve port.
Verify that nozzle caps are installed, and foil seals are intact on all nozzles, refer to Figure 9 on
page 10.
Connecting Service Test Tank to the System
Warning!
If the PAK or SVAs are installed on the cylinder valve during the test, the cylinders will discharge.
CAUTION!: Supplied Nitrogen Pressure Must be 25 psig Minimum to 200 psig Maximum.
Refer to "COMPONENTS" on page 5 for component location and details.
Disconnect the Primary Actuator Kit (PAK) stainless-steel hose from the primary cylinder valve.
NOTE: When disconnecting or re-attaching primary hose, perform action quickly to minimize
nitrogen loss.
Verify that the Supervisory Pressure Switches have activated.
Remove the PAK and any Secondary Valve Actuators (SVA) from their cylinder. Place PAK and SVAs
in the ship/test position. Verify that the PAK and SVAs are securely mounted to the bracket. Refer to
Figure 15 on page 13.
Connect the stainless steel hose from the PAK assembly to a Nitrogen Service Cylinder via the
1/4" refrigerant test hose with 1/4" male thread union. Refer to Figure 48.
Connect an additional 1/4" refrigerant test hose from the service port of the PAK assembly to the
service port on the fire system distribution piping.
Verify that the pistons in the PAK and SVAs are in the set position. Refer to Figure 16 on page 14.
Verify all secondary actuator hoses are connected to the appropriate PAK or SVAs and are securely
tightened.
Verify the actuation line plug is installed in the last actuator on the system (last SVA or PAK if there are
no secondary cylinders). Verify the plug is tight.
Verify that the Supervisory Pressure Switch is installed securely on the PAK. Optional Feature:
Secondary tanks may also have Supervisory Pressure Switches installed, verify all switches are
properly secured to all secondary tanks.
Verify the primary actuator solenoid is in the de-energized state.
Figure 48 - PAK Connection to Test Hose
1/4" Refrigerant Test Hose
1/4" Male to Male Union
PAK Connection Hose
ME
Test Procedure
Remove threaded nozzle caps.
Remove hood filters. This will expose the Firestat(s) and the duct and plenum drops.
Place testing balloons over all nozzles (appliance, duct, and plenum).
Turn the Nitrogen Service Cylinder on to pressurize the system.
CAUTION!: Supplied Nitrogen Pressure Must be 25 psig Minimum to 200 psig Maximum.
Activation of the fire system may be initiated by two methods.
Method 1- Use a portable heat source to apply heat to the duct Firestat in accordance with the
manufacturer's instructions. Please refer to applicable detector manufacturer's manual. Heat should
activate the fire system, and nitrogen from the test cylinder should activate all fire system actuators
and begin to fill the service balloons. The use of a torch or flame is strictly prohibited.
Method 2 - Lift the cover to the manual release station and "push" the manual release station button
to activate the fire system. The manual release station can be re-set by twisting the push button in a
clockwise motion.
Verify that the control panel has activated and that the audible alarm is sounding.
Ensure the PAK and all SVAs have actuated, with the piston in the fully extended and locked position.
Verify that there are no leaks in the actuation line.
Verify that the solenoid is in the energized state.
Verify that all balloons are filled.
Verify fuel to all appliances under the protected hood has shut off.
Verify the makeup air supplied internally to the hood has shut off.
Verify electric power shutdown.
If all of the above is confirmed, reset the control panel per "Reset Overview" on page 53.
Turn the Nitrogen Service Cylinder off.
Re-install all nozzle seals and caps. Refer to "Nozzles" on page 39.
61
Disconnecting Service Tank/Re-arming System
Relieve pressure in the primary actuator hose by slowly disconnecting the 1/4" refrigerant test hose
from the Nitrogen Service Cylinder.
Relieve pressure in the actuation line by slowly disconnecting the 1/4" refrigerant test hose from the
PAK service port, as well as removing the 1/4" plug from the last fire system actuator.
Disconnect the 1/4" refrigerant test hose from the fire system piping distribution port.
Test the locking function of each PAK and SVA by pushing firmly on the piston. The piston should
remain in the actuated (extended) position.
Reset each PAK and any SVAs by depressing the spring-loaded pin on the piston and pushing the
piston into the body of the actuator.
NOTE: If a PAK or SVA fails to operate or cannot be properly reset, the unit must be replaced. Refer
to "MAINTENANCE" on page 63 for replacement procedures.
If all of the above is confirmed, secure the 1/4" plug on the last fire system actuator. Verify all of the
actuation lines between the PAK and SVA(s) are secure and tight. Place Schrader Valve caps onto
service ports and tighten.
Install the PAK and any SVAs onto their respective cylinders. Refer to Figure 49.
Check all cylinder gauges to confirm proper pressure, refer to Table I on page 6. Refer to "Charging
Cylinders" on page 72 for charging cylinder details.
Re-arm the control panel by placing the package in "armed mode."
Connect the primary actuator hose securely to the Schrader valve port on the primary cylinder.
Verify that the Supervisory Pressure Switches have reset per the control panel manual instructions.
Figure 49 - Set Position
PAK in Set Position
SVA in Set Position
62
MAINTENANCE
NOTE: It is the responsibility of the system installer to review system operation and owner
obligations, and to provide any necessary literature to the owner at the time of system installation.
This chapter contains the inspection and maintenance instructions for the EWC extinguishing system.
These procedures must be performed in accordance with NFPA 17A and the National Fire Code of
Canada as applicable. If problems arise, corrective action must be taken.
Every Month (System Owner)
Refer to the cylinder nameplate for proper inspection and maintenance instructions. Inspections are
required to ascertain that the system is operable and that no changes have occurred, which would
compromise the effectiveness of the system. A record of the monthly inspection is to be kept reflecting the
date inspected, initials of the person performing the inspection, and any corrections required. If any
discrepancies are noted while making this inspection, DO NOT CONTINUE OPERATING COOKING
APPLIANCES. Immediately contact an authorized distributor for service and/or repair.
The following procedure is to be performed by the Owner of the system on a monthly basis:
Table 22 - Owner's Monthly Maintenance
Checkbox Procedure
Verify the extinguishing system is in its proper location
Inspect all system components, agent distribution pipe, and conduit runs for physical damage
and/or displacement.
Inspect all nozzles to verify foil seal caps are in place and intact. Check for possible
obstructions to the discharge of the wet chemical.
Inspect each Cylinder and Valve Assembly. The indicator on the pressure gauge should be in
the "green" range. The cylinder should not show evidence of corrosion or damage.
Verify that manual release stations are unobstructed and in clear view and are labeled for
intended use.
Verify all tamper seats are intact, and the system is in a ready condition.
Verify the inspection tag or certificate is in place and current.
Verify the hood, duct, and protected cooking appliances have not been replaced, modified, or
relocated.
63
Every Six Months (Authorized Distributor)
All systems shall be inspected and serviced semi-annually by an authorized distributor.
Place the control panel in test mode and ensure there are no supervision faults (refer to "Reset
Overview" on page 53.
Disconnect the primary actuator hose from primary cylinder.
Verify that the Supervisory Pressure Switches have activated per the control panel manual
instructions.
Verify that the system design and installation are adequate to protect the hazard area and conform to
the instructions in this manual. Check the following:
All equipment requiring fire protection within the hazard area is protected.
There have been no unauthorized alterations to the protected area or equipment, or to the wet
chemical system.
All Cylinder Mounting Brackets are securely fastened to the hood.
All cylinders are properly pressurized. Refer to Table I for details.
All nozzles are properly aimed, secured, and located within the proper distance from the protected
equipment. Each nozzle should be clean and equipped with a foil seal cap.
All piping joints and pipe supports are securely fastened.
The pipe lengths, sizes, fittings, and material are as specified in this Manual.
All wiring is in compliance with local codes.
All field wiring is free of ground fault or short-circuit conditions.
All system components and installation material are as specified in this manual.
5. Perform Start-up/Test Procedure (Refer to "INSPECTION AND TEST" on page 60).
Every Twelve-Years
The 12-year maintenance is typically done in conjunction with the semi-annual maintenance. These
procedures shall be performed in addition to the tests conducted at Semi-Annual intervals
("Every Six Months (Authorized Distributor)" on page 64).
Agent Cylinders
Each cylinder must be replaced or recharged every 12 years. For information on replacing cylinders, refer
to "POST-DISCHARGE MAINTENANCE" on page 66.
Actuation Hoses
All actuation hoses must be hydrostatically tested (at 500 psi test pressure) or replaced every 12 years in
accordance with NFPA 17A.
64
41,
Conditional Maintenance
Replacing A Primary Actuation Kit
If a PAK fails to operate during system testing, follow these steps to replace the PAK:
Ensure the primary actuation hose is not connected to the primary cylinder or a nitrogen pressure
supply system.
Remove the supervisory pressure switch installed on the PAK.
If applicable, disconnect the secondary actuation hose from the PAK.
Loosen the PAK shipping bolts from the top of the bracket, slide the unit back and remove it from the
bracket.
Loosen the shipping bolts on the new PAK. Slide the unit into the bracket. Tighten the shipping bolts to
ensure the PAK is held firmly but can still be slid back for installation to the cylinder valve.
If applicable, remove the side plug on the PAK and install in the secondary actuation hose.
Install the supervisory pressure switch onto the new PAK.
Replacing A Secondary Valve Actuator
If an SVA fails to operate during system testing, follow these steps to replace the SVA:
Ensure the primary actuation hose is not connected to the primary cylinder or a nitrogen pressure
supply system.
Disconnect any secondary actuation hose connecting the SVA to the PAK or other SVAs.
Loosen the SVA shipping bolts from the top of the bracket, slide the unit back and remove it from the
bracket.
Loosen the shipping bolts on the new SVA. Slide the unit into the bracket. Tighten the shipping bolts to
ensure the SVA is held firmly but can still be slid back for installation to the cylinder valve.
If applicable, remove the side plugs on the SVA and connect the SVA to any applicable secondary
actuation hoses.
65
POST-DISCHARGE MAINTENANCE
General Information
Liquid Fire Suppressant, the Aqueous Potassium Carbonate (APC) base wet chemical used in the EWC
extinguishing system, is non-toxic. However, any food or cooking oils that have been contaminated with
wet chemical agent should be discarded. Refer to Safety Data Sheet (SDS).
After any system discharge, it is best to clean the area as soon as it is safe to do so. Prolonged exposure
of equipment to wet chemical can result in localized corrosion due to moisture in the air. Clean up should
be completed within 24 hours of any system discharge.
EWC cylinders need to be recharged or replaced every 12 years, and after any system discharge.
Appliance Cleanup
No unusual cleanup procedure is required. The reaction of the wet agent and the grease is one of
saponification, and it produces a foam that can be wiped off. After the appliances have completely cooled,
the residue from the discharge may be cleaned up using a wet cloth or sponge. Ensure that all fuel and
electric power to the area has been shut down. Wear rubber gloves and eye protection while cleaning. If
skin or eyes come in contact with the agent, flush thoroughly with water.
WARNING!
Do not disturb the foam until the cooking appliances, plenum, and duct have cooled sufficiently.
Do not put water on hot grease as this will cause violent steamiij and spattering
WARNING!
APC wet agent is electrically conductive To avoid electrical shock, de-energize all electric circuits
to appliances, outlets, and wiring by disconnecting or turning off the electric power at the main
fuse or circuit breaker box. Do not cleanup APC wet agent or touch electric appliances, outlets,
power cords, or other wiring with electric power on.
Cleaning Distribution System
The EWC extinguishing system must have all discharge piping and nozzles flushed out with water after
any discharge, as detailed in the following procedures.
Cleaning Nozzles
Remove all nozzles from the system.
Inspect each nozzle & filter and remove any debris. Remove nozzle caps.
Clean nozzle and strainer by flushing thoroughly with warm soapy water. Remove any foreign matter
that could impede flow.
Run water through the nozzle tip to ensure the orifice is not clogged.
Thoroughly dry nozzles with dry air or nitrogen and set aside.
Flushing the Distribution Pipe Network
Prior to starting the flushing procedure, inspect the complete pipe network, and replace any pipe or fittings
that have been subjected to direct flame or excessive heating. The following procedure describes flushing
the pipe network with a spare/test cylinder. The pipe network can also be flushed utilizing an external
water supply if available.
Flushing Procedure with Spare/Test EWC Cylinder
Check the pressure gauge on each cylinder to ensure it has been depressurized.
Remove the vent plug, clean thoroughly with warm soapy water, and rinse with water. Dry thoroughly
with dry air or nitrogen and set aside.
Install a pipe plug in the vent plug tee.
Disconnect the Primary Actuator Kit (PAK) stainless steel hose from the primary cylinder valve.
Remove all cylinders from the system. Refer to "Removing a Cylinder" on page 69.
Fill test cylinder(s) with water and pressurize. Refer to "Charging a Spare/Test Cylinder" on
page 74.
Install a test cylinder for each removed cylinder. Refer to "Installing a Cylinder" on page 74.
Attach a suitable container (or hose to a container or other point of disposal) at each pipe outlet where
a nozzle was installed to collect the water discharge.
Install the PAK. Refer to "Primary Actuator Kit (PAK)" on page 14.
Install the SVAs onto their respective cylinders. Refer to "Secondary Valve Actuator" on page 14.
Re-arm the control panel by placing the package in "armed mode."
Connect the primary actuator hose securely to the Schrader valve port on the primary cylinder.
Activate the system using the manual release station.
Remove containers or hoses from all nozzle location pipe outlets.
Remove test cylinders.
Connect a nitrogen service tank to system piping service port and blow out the discharge piping to
remove all excess water. Disconnect the nitrogen service tank.
Install new or recharged cylinders at each cylinder location. Refer to "Installing a Cylinder" on
page 74.
Re-install vent plug and tighten until snug. Do not over-tighten.
Re-install nozzles, ensuring that all nozzles are in the correct location and properly aimed. Refer to
"INSTALLATION" on page 12 for nozzle placement and aim directions.
Complete the Start-up/Test Procedure. Refer to "Start-up/Test Procedure" on page 60.
67
Flushing Procedure with an External Water Supply
Check the pressure gauge on each cylinder to ensure it has been depressurized.
Remove the vent plug, clean thoroughly with warm soapy water, and rinse with water. Dry thoroughly
with dry air or nitrogen and set aside.
Disconnect the Primary Actuator Kit (PAK) stainless steel hose from the primary cylinder valve.
Remove all cylinders from the system. Refer to "Removing a Cylinder" on page 69.
Attach a suitable container (or hose to a container or other point of disposal) at each pipe outlet where
a nozzle was installed, and at each cylinder inlet supply tee, to collect the water discharge.
Connect the external clean water supply to the vent plug tee.
Turn on the external water supply and run for one minute.
Turn off external water supply.
Remove containers or hoses from all collection points.
Connect a nitrogen service tank to system piping service port and blow out the discharge piping to
remove all excess water. Disconnect the nitrogen service tank.
Install new or recharged cylinders at each cylinder location.
Re-install vent plug.
Re-install nozzles, ensuring that all nozzles are in the correct location and properly aimed. Refer to
"Nozzles" on page 39 for nozzle placement and aim directions.
Complete the Start-up/Test Procedure. Refer to "Start-up/Test Procedure" on page 60.
Cylinder Maintenance
EWC cylinders need to be recharged or replaced every 12 years, and after any system discharge.
Never assume that a cylinder is unpressurized Handle all cylinders as if they are pressurized until
verified otherwise. Pressurized cylinders are extremely hazardous.
When performing any cylinder maintenance procedure, the cylinder must be properly secured to a
rigid structure capable of withstanding the full thrust that would result if the valve were to open
inadvertently. 1
Any time a cylinder assembly is unsecured, the anti-recoil plate must be installed on the valve
outlet to provide a safe, controlled discharge in the event of accidental actuation.
Failure to take proper precautions could result in death, serious personal injury and/or property
damage
Removing a Cylinder
Follow these steps when removing a cylinder:
On the primary cylinder, disconnect the hose that connects the PAK with the cylinder.
Remove the mounting bolts connecting the PAK to the primary cylinder. Lift the PAK up and place the
PAK into the bracket in the ship/test position. Ensure it is supported by the shipping bolts.
Install the Valve Protection Plate on top of the valve using the mounting bolts and 2 nuts. Refer to
Figure 50.
Loosen the bolts holding the valve to the discharge adapter and cylinder bracket.
Loosen the bolts and remove the straps holding the cylinder in place.
Pull the cylinder out from the bracket. Immediately install the Anti-recoil cap onto the valve discharge
outlet.
If secondary cylinders are present, remove the mounting bolts connecting the Secondary Actuators to
the secondary cylinders. Lift the actuators up and place the actuators into the bracket. Ensure they are
supported by the shipping bolts. Install the Valve Protection Plates on top of each secondary cylinder's
valve using the mounting bolts and 2 nuts. Refer to Figure 50.
For each secondary cylinder, perform the following before moving to the next secondary cylinder:
Remove the Supervisory Pressure Switch from the cylinder valve if applicable.
Loosen the bolts holding the valve to the discharge adapter and cylinder bracket.
Loosen the bolts and remove the straps holding the cylinder in place.
Pull the cylinder out from the bracket. Immediately install the Anti-recoil cap onto the valve
discharge outlet. Refer to Figure 50.
Figure 50 - Installing Valve Protection and Anti-Recoil Plate
V *
Valve
Cylinder
Assembly
Depressurizing a Cylinder
WARNING!
Failure to correctly secure the hose could result in death, serious bodily injury, and/or property
damage.
Secure the cylinder in a chain vice, strap vice, or similar device.
Prepare high-pressure discharge hose with a spare ADP or TF1 nozzle on the end.
Remove the anti-recoil plate from the cylinder outlet and install the discharge adapter.
Install a ball valve onto the discharge adapter outlet. Refer to Figure 51.
Attach the discharge hose with nozzle to the ball valve outlet.
Attach the hose and discharge adapter assembly to the cylinder valve outlet.
Insert the opposite end of the hose into an appropriate container for the wet chemical agent.
Ensure that the hose is secure and will not come loose or separate from the container.
Install a Secondary Valve Actuator (SVA) onto the cylinder valve.
Connect the nitrogen service cylinder to one of the SVA ports, and an SVA plug in the opposite port.
Ensure that the ball valve on the discharge assembly is in the closed position.
Open the nitrogen supply, slowly increasing pressure until the SVA actuates, then shut off nitrogen
supply.
Carefully open the discharge valve.
Monitor the discharge to prevent spillage and to ensure that the hose remains secure.
Control the rate of discharge via the ball valve.
If applicable, stop the flow and change containers.
When the discharge is complete, turn off the nitrogen service cylinder supply.
Check that the cylinder gauge indicates no pressure, and carefully depress the Schrader on the
cylinder valve. Check for any possible flow/leakage of nitrogen.
Slowly disconnect the nitrogen supply, relieving pressure from the SVA.
Remove the SVA from the valve.
Remove the valve/siphon tube assembly by unthreading the valve counterclockwise from the cylinder.
Invert the cylinder to remove any residual wet chemical.
Clean the cylinder and threads with warm soapy water and rinse with clean water.
Blow out any residual moisture from the cylinder and threads with dry air or nitrogen.
Refer to "Rebuilding the Valve/Siphon Tube Assembly" on page 71 for rebuild, if applicable.
Figure 51 - Cylinder Discharge Assembly
Cylinder Discharge
Adapter
Attach Discharge
Hose to this End.
ri.]
4 . -
Rebuilding the Valve/Siphon Tube Assembly
CAUTION!
Only use new components when rebuilding a valve. All necessary replacement components are
included in the Valve Rebuild Kit PIN 87-120067-001. Do not rebuild a valve with any other
components (e.g used or aftermarket).
When rebuilding the valve, use Valve Rebuild Kit P/N 87-120067-001.
Inspect valve for signs of corrosion or damage before rebuilding.
Remove the siphon tube by unthreading counter-clockwise from the valve.
Secure the valve body.
Depress the spring retainer and remove the retaining ring check (using bent snap-ring pliers, external).
Refer to Figure 52.
Slowly release the spring retainer and remove the check, retainer, and spring.
Depress the top of the valve stem to remove it (the valve stem may fall out when the Retaining Ring
Check is removed).
Discard the removed components.
Clean the valve and siphon tube, including internals, threads and sealing surfaces, by flushing
thoroughly with warm soapy water. Rinse with clean water.
Blow out any residual moisture with dry air or nitrogen, and ensure the valve is completely dry.
Insert a new valve stem from the bottom of the valve.
Place the valve onto a 3/4" pipe section, spare socket, or equivalent to keep valve stem from falling
out.
Insert a new valve spring onto the top of the valve stem.
Place a new spring retainer onto the valve spring.
Press the retainer down on the valve stem and install a new retaining ring check onto the valve stem
using the bent tip snap-ring pliers.
Ensure the retaining ring check is securely in place in the groove on the valve stem is completely
closed.
Apply a light coat of Parker Super 0-Lube on the entire surface of the valve-to-cylinder 0-ring and
install the 0-ring on the valve body.
Thread the siphon tube in the base of the valve until bottomed out.
Figure 52 - Valve Assembly
The rebuild kit includes:
Retaining Ring Check - I
Spring Retainer - I
Valve Spring - I
Valve Stem with 0-ring Installed - I
Cylinder-to-Valve 0-rings - 2 (1 Spare)
Tube of Parker Super 0-Lube - I
RUAIMHO FI1fl ciicc
SNG
*'-1PRC55VR0GAUGe
VA UV
CYLERVVE
VALVE SUM
BONMED EM.
71
Charging Cylinders
Do not attempt to recharge any cylinder without first checking for most recent hydrostatic test
date. In accordance with DOT and TC regulations, the EWC wet chemical cylinder must not be
recharged or transported without first being inspected internally and externally, and
hydrostatically tested if more than 5 (five) years have elapsed since the date of the last hydrostatic
test. Regardless of previous inspection dates, it is illegal to refill any pressurized container that
leaks, which bulges, has defective safety devices, bears evidence of physical abuse, fire or heat
damage, or detrimental rusting or corrosion, until it is properly repaired and re-qualified as
specified in DOT and TC regulations Hydrostatic testing must be performed by a licensed
hydrostatic test facility.
The following procedures assume the cylinder has been hydrostatically tested if applicable, has been
cleaned and inspected, and the valve/siphon tube assembly has been rebuilt or is being replaced.
The cylinder can be pressurized by attaching the nitrogen supply to either the cylinder valve outlet (utilizing
the threaded discharge adapter) or the Schrader port on the cylinder valve (utilizing a 1/4" quick coupler
flare fitting with Schrader valve core deflector). Refer to Figure 53 for recommended pressurizing
connections and setup.
Refer to Table 26 on page 75 for recommended service parts that are not included with the system.
Figure 53 - EWC Cylinder Pressurization Set-up
*Calibrated r Regulator
Pressure Gauge p*ShutOff with Adapter
Valve
Cylinder and Liii Nitrogen
Valve Assembly-H 4 ,_*VeIit Cylinder
Valve
* Optional Testing Components
72
Recharging an EWC Cylinder
WARNING!
Do not Use any suppressing agent other than Liquid Fire Suppressant when refilling EWC
cylinders. Failure to use the correct agent could result in death, serious personal injury and/or
property damage.
Secure the cylinder in a chain vice, strap vice, or similar.
Ensure the cylinder has been hydrostatically tested, if applicable, and has been cleaned and
inspected.
Fill the cylinder with Liquid Fire Suppressant recharge P/N 87-300101-001. The EWC recharge is
factory filled to the correct quantity for refill. Ensure the complete contents of the refill are used.
Re-install a new or rebuilt valve/siphon tube assembly onto the cylinder and torque to 25 ft/lb. Refer to
"Rebuilding the Valve/Siphon Tube Assembly" on page 71.
Connect the external nitrogen supply to the cylinder valve outlet with a discharge adapter. Refer to
Figure 53.
Pressurize the cylinder with nitrogen to 200psig at 70°F. Refer to Table 23 for pressure variation with
temperature.
Turn off nitrogen supply and disconnect cylinder.
Remove the discharge adapter.
Check for leakage using a soap solution.
Immediately install the Anti-Recoil and Valve Protection Plates until the cylinder is ready to be
installed. Refer to "Installing Valve Protection and Anti-Recoil Plate" on page 69.
Table 23 - EWC Cylinder Pressure vs. Temperature
Temperature (°F) Pressure (PSIG)
50 192
60 196
70 200
80 204
90 208
NOTE: Temperature is measured at the external surface of the cylinder, below the liquid level.
73
...
Charging a Spare/Test Cylinder
Secure the cylinder in a chain vice, strap vice, or similar.
Ensure the cylinder has been hydrostatically tested, if applicable, and has been cleaned and
inspected.
Fill the cylinder with approximately 4 gallons of clean water.
Re-install the valve/siphon tube assembly onto the cylinder and torque to 25 ft/lb.
Connect the external nitrogen supply to the cylinder valve outlet with a discharge adapter. Refer to
Figure 53.
Pressure the cylinder with nitrogen to approximately 200psig at 70°F. Refer to Table 23 for pressure
variation with temperature.
Turn off nitrogen supply and disconnect cylinder.
Remove the discharge adapter kit.
Immediately install the Anti-Recoil and Valve Protection Plates. Refer to Figure 50.
Installing a Cylinder
All removed cylinders must be replaced with new (fully charged) or properly re-charged cylinders. Follow
these steps to install a cylinder:
Lubricate a new 0-ring with Parker Super 0-Lube and install on the discharge adapter.
Remove the anti-recoil cap and place the cylinder into position, ensuring a tight seal with the discharge
adapter.
Strap the cylinder onto the cylinder bracket.
Bolt the cylinder valve to the discharge adapter and cylinder bracket. Refer to page 13 and page 14 for
details on installing the PAK and SVA.
Rechecking the System
After the inspections and procedures described previously in this section, the fire-suppression system is
ready to be fully checked out before installation of the replacement wet chemical cylinders.
Follow the system commissioning and test procedures outlined in "Start-up/Test Procedure" on
page 60.
Be sure to check the system for all modes of operation.
74
EWC SUPPRESSION SYSTEM PARTS
Table 24 - System Components
Description Part Number A/X Number
EWC Cylinder Assembly, Filled & Pressurized 87-300001-001 A0030114
Bracket, EWC Cylinder EWC-UCTANKBRACKET N/A
Discharge Adapter WK-283952-000 A0030115
0-Ring for Discharge Adapter WK-108019-000 A0030738
Vent Plug, Distribution Piping 60-9196984-000 A0030116
ADP Appliance Nozzle with Foil Seal Cap 87-300020-001 A0030117
TEl Total Flood Nozzle with Foil Seal Cap 87-300021-001 A0030118
R Appliance Nozzle with Foil Seal Cap 87-120019-001 A0032708
Nozzle Swivel Adapter 87-120021-001 A0030119
Primary Actuator Kit (PAK) 87-300030-001 A0030120
Primary Actuator Solenoid Valve, 24VDC 87-300031-001 A0030121
Secondary Valve Actuator (SVA) 87-120042-001 A0030124
Secondary Valve Actuator Hose 7" 87-120045-001 A0031516
Secondary Valve Actuator Hose 24" 87-120045-002 A0030125
Secondary Valve Actuator Hose 60" 87-120045-003 A0031517
Cylinder Supervisory Pressure Switch 87-300040-001 A0030126
Gas Shut-off Valve, 3/4" (ASCO) 8214235 A0024941
Gas Shut-off Valve, 1" (ASCO) 8214250 A0024937
Gas Shut-off Valve, 1-1/4" (ASCO) 8214265 A0024938
Gas Shut-off Valve, 1-1/2" (ASCO) 8214275 A0024939
Gas Shut-off Valve, 2" (ASCO) 8214280 A0024940
Gas Shut-off Valve, 2-1/2" (ASCO) 8214290 A0024936
Gas Shut-off Valve, 3" (ASCO) 8214240 A0024935
Table 25 - Maintenance & Recharge
Description Part Number AIX Number
Valve Protection Plate WK-255096-000 A0030739
Anti-Recoil Plate WK-255681-000 A0030740
EWC Valve Rebuild Kit 87-120067-001 A0030741
Wet Chemical Recharge, single EWC cylinder 87-300101-001 A0030127
Discharge Adapter Kit (includes mounting flange) 83-844908-000 N/A
Replacement Nozzle Cap 60-9197290-000 A0030128
Replacement Nozzle Seals 60-9197054-000 A0030129
Schrader Cap 87-300140-001 A0030130
Schrader Valve 87-300141-001 A0030515
SVA bolts 87-300152-001 A0030131
Table 26 - Service Parts (not supplied with system)
Description Part Number AIX Number
Low-Loss Fitting 1/4" Male to Male Thread Union U24 A0030896
Low-Loss Fitting 1/4" Straight Adapter Male to Female Thread NABS A0030898
1/4" Refrigerant Test Hose, 30" Long, Low-Loss Fittings NHDI430 A0030899
1/4" Refrigerant Test Hose, 60" Long, Low-Loss Fittings NHD1460 A0030900
Nitrogen Tank HP20 A0030901
Pressure Regulator GEN45OF A0030902
75
Start-Up and Maintenance Documentation
START-UP AND MEASUREMENTS SHOULD BE PERFORMED AFTER THE SYSTEM HAS BEEN
INSTALLED (Warranty will be void without completion of this form)
Job Information
Job Name Service Company
Address Address
City City
State State
Zip Zip
Phone Number Phone Number
Fax Number Fax Number
Contact Contact
Purchase Date Start-Up Date
Cleaning and Maintenance Record
Date
Notes:
Factory Service Department I Phone: 1-866-784-6900 I Fax: 1-919-516-8710
76