HomeMy WebLinkAbout1854 MARRON RD; ; FS960016; Permit12/27/24,12:55 PM FS960016 Permit Data
City of Carlsbad
FIXED SYSTEMS PERMIT
Permit No: FS960016
Job Address: 1854 MARRON RD Status: ISSUED
Permit Type: FIXSYS Applied 7/31/1996
Parcel No: Approved: 8/6/1996
Lot #: 0
Reference No.: Issued: 8/6/1996
PC #: Inspector:
Project Title: JADE TREE REST 2100 SF HOOD & DUCT PLANS
Applicant: Owner:
MASTER PROTECTION/FIREMASTER MCCONNELL, BRIAN
7198 CONVOY COURT
SAN DIEGO CA
619 569-3888
Fees ($) Fees ($) Tot:I($) Balance ($)
80
[
[Add
0 80 0
about:blank 1/1
yro Chem,
Specifications
10 59.4OE MAs40 SWION
CAM - 1W MX
Ca"ER PUj.EYS -20 NOX Fl 3/64 CAEI.E
CaP PULLEYS - 17 M CQ 1/16' CABLE
10 TUSSLE LN<S
CABLE -iWMAX
C/NFR PULLEYS -20 M.A
TOIAL UNITS -15 MAX
TO GAS VALVE SHUT-OFF
CABLE - 5a MAX
CORNSZ P.tLE'iS -15 WX
Model No. A B C D
FLOW
PC1T
CAPACTY WIFIGHT
MOUNTING
BRACET
USED.
PCL-240 8.00 24.13 30.13 21.75 8 55 lbs M8-15
PCL.350 10.00 24.75 30.75 22.38 13 85 lbs MB-15
PCI.-550 10.00 34.50 40.50 32.13 I 20 110 lbs MB-i
ALL OMAENSONG IN INCHES &
General
The Pyro Chem Restaurant Kitchen Fire Suppression System is a
pre-engineered solution to appliance and ventilating hood and
duct grease fires. The system is designed to maximize hazard
protection, reliability, and installation efficiency. Automatic or
manual system activation releases a throttled discharge of
potassium carbonate solution on the protected area in the form of
fine droplets to extinguish the fire and prevent reignition after the
discharge is complete.
System Operation
The Pyro Chem Restaurant Kitchen Fire Suppression System has
been designed for protecting kitchen hood, plenum, exhaust duct,
grease filters, and cooking appliances (such as fryers, griddles,
rangetops, upright broilers, charbroilars and woks) from grease
fires. The versatile state-of-the-art wet chemical distribution
technique, combined with dual, independent activation capability -
automatic fusible link or manual release - provides efficient,
reliable protection the moment a fire is detected. Once initiated,
the pressurized wet chemical extinguishing agent cylinder expels
a potassium carbonate solution through a pre-engineered piping
network and out the discharge nozzles. The wet chemical
discharge pattern is maintained for a duration of time to ensure
extinguishment and inhibit regnition.
Pyro Chem, Inc.
301 Division Street
Boonton, NJ 07005
--'- -. (800) 526-1079
Expanded capability provides remote manual actuation, gas
equipment shutdown, and electrical system shutdown. This
optional equipment will enhance the basic system functions and
be applicable when designing custom configurations to suit a
particular customer's needs and/or comply with local codes.
Suggested Architect's Specifications
The fire suppression system should be of the stored pressure,
wet chemical pre-engineered fixed nozzle type manufactured by
Pyro Chem. Inc. A carbon dioxide cartridge is designed in
compliance with Military Specification'MIL-C-601G, and shall
be used as the pneumatic releasing device for the system. The
cartridge shall be an integral part of the control head assembly.
The wet chemical storage cylinder shall be 0.0.1.- rated for
stored pressure of 175 psig, and a pressure gage shall be
provided on the cylinder valve for visual inspection. The system
shall be capable of automatic and manual actuation. Automatic
actuation shall be provided by an appropriate number of thermal
detectors mounted in series on a stainless steel wire input line to
the control head. Manual actuation shall be provided by turning a
handle on the primary head and/or by an optional remote pull
station with a dedicated stainless steel input line to the control
head.
3-8
SECTION 2
Cylinder Sizing
After determining the number and type of nozzles required
to protect the duct, plenum, and cooking appliances, the
total number of system flow points can be determined.
The sum of all required nozzles flow points is used to
determine the size and quantity of cylinders required.
MAXIMUM CYLINDER FLOW POINTS
Flow Points Cylinder
8 PCL-240
13 PCL-350
20 PCL-550
For systems requiring more than twenty (20) flow points,
any combination of cylinders can be used provided the
total flow point requirements are met.
EXAMPLE
If a system requires twenty-six (26) flow points, the
following combinations of cylinders can be used:
1 x PCL-550 and 1 x PCL-240 (28 FP total)
2 x PCL-350 (26 FP total)
NOTE:
Cylinders cannot be manifolded together. Each
cylinder must be piped separately.
SECTION 3
Piping Limitations
Pyro Chem Restaurant Fire Suppression System piping
limitations are divided into two categories; Main Supply
Line Piping Limitations and Branch Line Piping
Limitations.
1. Main Supply Line Piping.
The main supply line is a run of pipe from the cylinder to
the hazard area. In general, it is a straight run of pipe that
runs through tees. Branch piping is connected to the side
outlet of these tees.
The main supply line of the Pyro Chem Restaurant Fire
Suppression System utilizes either straight line or split
piping to simplify system installation.
Straight line piping is distinguished by the fact that the
main supply line is a straight run of pipe that flows
through tees. When straight line piping is used, the main
supply line cannot run into the branch of a tee.
Split piping is distinguished by the fact that the main
supply line runs into the branch of the first tee, splitting
the main supply line in two. The main supply line can only
be split once (as described above). When split piping is
used, no branch piping can be connected to the main
supply line before it is split. In split piping systems, the
entire main supply line, including both sides of the split,
cannot exceed the piping limitations outlined in this
chapter. In addition, the equivalent lengths of the main
MAIN SUPPLY LINE PIPE
TOTAL LINEAR FEET
TOTAL FITTING EQUIVALENT
H LINE STARTS
X OUTLET or
SUPPLY LINE TEE
1.3
= 4.0'
= 14.2'
TOTAL EQUIVALENT FEET = 18.2'
Figure 3-15. Example of Equivalent Piping.
ULEX 3830
'o'emher 1, 199-i
Page 3-
Rev. 'supply line must be balanced to within ~1-10% on either
side of the splitting tee. The difference in flow points on
each side of the splitting tee cannot exceed one flow
point.
2. Branch Line Piping.
Branch piping is used to connect the discharge nozzles to
the main supply line. This piping is connected to the side
outlet of main supply line tees. The last branch is
connected to an elbow at the end of the main supply line.
There are seven (7) types of branch piping:
One (1) Nozzle Duct Branch.
Two (2) Nozzle Duct Branch.
One (1) Nozzle Plenum Branch.
One (1) Nozzle Appliance Branch.
Two (2) Nozzle Appliance Branch.
Three (3) Nozzle Appliance Branch.
Four (4) Nozzle Range Branch.
UNDERSTANDING EQUIVALENT
PIPING
Piping limitations in this chapter are given in both linear
and equivalent lengths.
Linear piping is the actual length of straight pipe used on
either the main supply line or a branch.
Equivalent piping is equal to the total linear pipe used on
either the main supply line or a branch plus the equivalent
length of any fittings used on either the main supply line
or a branch. See Figure 3-15.
Equivalent Piping = (Linear Piping) +
(Total Equivalent Length of Fittings Used)
All pipe fittings develop a pressure loss which can be
equated to the loss through a specific length of straight
pipe. This loss is the equivalent length of the fitting. See
Table 3-1.
PIPE SIZE
45
ELBOW
90
ELBOW
TEE
THROUGH
TEE
SIDE
OUTI.ET
UNION
OR
COUPLINGS
3/8rn 0.6 1.3 0.8 Z.? 0.3
I/2 0.8 1.7 tO 3.4 0.4
3/4 to 2.2 1.4 1.5 0.5
Table 3-1. Pipe Fitting Equivalent Lengths In Feet.
An example of the total equivalent piping calculation for a
typical branch is illustrated by Figure 3-15.
NOTE
The only acceptable types of piping which can be
used with the Pyro Chem System are black pipe,
stainless steel, or chrome plated pipe. Galvanized
pipe cannot be used.
MAIN SUPPLY LINE PIPING
LIMITATIONS
1. Model PCL-240.
Main supply line piping limitations for the PCL-240 are given
by Table 3-2. The maximum length of main supply line
between the first and last branch tee is 16 feet. Examples of
acceptable piping configurations are shown in Figure 3-16.
MAX. MAX. LENGTHS MW. LENGTHS MAX PIPE P1.0w FEET FEET VERTICAL SECTION OIA. POINTS LRIEAR EQUIV. LINEAR XQUIV. 515€
MAn SIWPIY 3Ar 8
Table 3-2. Model PCL-240. Main Supply Line Piping Limitations.
NOTE
For installations that require the use of the Model NL-
F1.25 nozzle, the following additional restrictions
apply:
Minimum length, linear: 5.5 feet
Minimum length, equivalent: 12 feet
Minimum system flow points: 3
Minimum branches (total): 3
2. Model PCL-350.
Main supply line piping limitations for the PCL-350 are given
by Table 3-3. The maximum length of main supply line
between the first and last branch tee is 30 feet. Examples of
acceptable piping configurations are shown in Figure 3-17.
MAX. MAX. LENGTHS .Wt LENGTHS MAX.
p9 P1.0W FEET FEET VERTICAL
SECTION DIA. POI'ITS UNEAR I EQUIV. LINEAR EOUV. 95€
MAIN SIW9IY 117 13 35 63 3 7 9 LIN.
Table 3-3. Model PCL-350. Main Supply Line Piping Limitations.
NOTE
For installations that require the use of the Model NL-
F1.25 nozzle, the following additional restrictions
apply:
Minimum length, linear: 5.5 feet
Minimum length, equivalent: 12 feet
Minimum system flow points: 3
Minimum branches (total): 3
3. Model PCL-550.
Main supply line piping limitations for the PCL-550 are
given by Table 3-4. The maximum length of main supply
line between the first and last branch tee is 35 feet.
Examples of acceptable piping configurations are shown
in Figure 3-18.
MAX. MAX. LENGTHS UP4 LENGTHS MAX.
PIPE P1.0W FEET per VERTICAI.
SECTION SIA POINTS LINEAR £OUIV LINEAR EGUIV. 515€
2 20 45 3 I L,n
Table 3-4. Model PCL-550. Main Supply Line Piping Limitations.
ULEX 3830
November 1. 1994
ag& 3-10
,ay.2
NOTE
For installations that require the use of the Model
NL-F1.25 nozzle, the following additional restrictions
apply:
Minimum length, linear: 5.5 feet
Minimum length, equivalent: 12 feet
Minimum system flow points: 3
Minimum branches (total): 3
BRANCH PIPING LIMITATIONS
There are seven (7) types of branches used on the Pyro
Chem Restaurant Fire Suppression System:
One (1) Nozzle Duct Branch.
Two (2) Nozzle Duct Branch.
One (1) Nozzle Plenum Branch.
One (1) Nozzle Appliance Branch.
Two (2) Nozzle Appliance Branch.
Three (3) Nozzle Appliance Branch.
Four (4) Nozzle Range Branch.
NOTE: A range branch is any branch that contains four
NL-F1.25 nozzles only. Any branch that contains less than
four NL-F1.25 nozzles, or NL-F1.25 nozzles in combination
with any other nozzle(s) is considered an appliance branch.
When using the PCL-240, the total of all duct, plenum,
appliance, and range branch piping cannot exceed 25
linear feet and 55 equivalent feet.
When using the PCL-350, the total of all duct, plenum,
appliance, and range branch piping cannot exceed 35
linear feet and 100 equivalent feet.
When using the PCL-550, the total of all duct, plenum,.
appliance, and range branch piping cannot exceed .45
linear feet and 125 equivalent feet.
Branch piping limitations are applicable to all cylinder
sizes (i.e., PCL-240, PCL-350, and PCL-550). All branch
piping must be 3f diameter black, chrome plated, or
stainless steel pipe.
1. One Nozzle Duct Branch Piping
Limitations.
The one nozzle duct branch is a run of 3f pipe which
connects the main supply line to a single duct nozzle. A
one nozzle duct branch can support the following
combinations of nozzles:
1 x Model NL.P Nozzle.
1 x Model NL.02 Nozzle.
1 x Model NL-03 Nozzle.
One nozzle duct branch piping limitations are given by Table 3-5.
MAX. t LDSGThS I
PPE I MAX. tow
I
.., EITTICAL
I SECTION i IA. LINEAR I EWN. I
I i I
I. I I I I
Table 3-5. Duct Branch Piping Limitations.
2. Two Nozzle Duct Branch Piping
Limitations.
The two nozzle duct branch is a run of '/." / pipe which
connects the main supply line to two duct nozzles. A two
nozzle duct branch can support the following combinations
of nozzles:
2 x Model NL-P Nozzle.
2 x Model NL.03 Nozzle.
Two nozzle duct branch piping limitations are given by
Table 3-5.1.
IMAX.MAXI LENGTHS I as.i. I.FNcm I
i row I rErr I I
I sEc2oN I Di... IPIONTS I LI'EAR I (Q(.SV. I LINEAR I (QUV. RI3E
2M. I I I I I I I
Table 3-5.1. Duct Branch Piping Limitations.
One Nozzle Plenum Branch Piping Limitations.
The one nozzle plenum branch is a run of pipe which
connects the main supply line to a plenum nozzle. A single
plenum branch can support only one flow point. Plenum
branch piping limitations are given by Table 3-6.
MAX_ MAX. LENGTHS
MrE n_ow I FEETI VTCAL.
SECTION SIA. po.rs LII.CAR I Eam. LPAR EOUV. Rl5
l. I
p,.,...,, yr i £ .1. o o I
Table 3-6. Plenum Branch Piping Limitations.
One Nozzle Appliance Branch Piping
Limitations. . . .
The one nozzle appliance branch is a run of 3f pipe which
connects the main supply line to a single appliance nozzle.
A one nozzle appliance branch can support a maximum of
two (2) flow points. One nozzle appliance branch piping
limitations are given by Table 3-7.
MAX. MAX. -
In P1.0W FEET RMT VEflCAL
SECTION OtA. P0IlT L?EAR I CQUV. WSE
Apün.. yr 2 5 12 0 0 0
Table 3-7. One Nozzle Appliance Branch Piping Limitations.
Two Nozzle Appliance Branch Piping
Limitations.
The two nozzle appliance branch is a run of 3/ pipe which
connects the main supply line to two appliance nozzles. A
two nozzle appliance branch can support a maximum of
four (4) flow points. Two nozzle appliance branch piping
limitations are given by Table 3-7.1.
MAX (AX. fl12 M5 MAX.
FLOW FT VERTICAL
5Cfl0N DIA. P0O2 UF€AA I EOW, i.EAR 0UV. SlOE
Table 3.7.1. Two Nozzle Appliance Branch Piping Limitations.
'ILEX 3830
riapter i—system Uesgt Page 3-
Rev.
CHAPTER III
System Design
This section will cover the proper design of the Pyro Chem Res-
taurant Fire Suppression System. It is divided into four (4) sections:
Nozzle Coverage and Placement.
Cylinder Sizing.
Piping Limitations.
Detector Requirements.
Each of these sections must be completed before
attempting any installation.
SECTION 1
Nozzle Coverage and Placement
This section will provide guidelines for determining nozzle
type, positioning, and quantity for duct, plenum, and
appliance protection.
A. Duct Protection
The following three (3) nozzles have been developed for
the protection of exhaust ducts:
Model NL-P.
Model NL-D2.
Model NL-D3.
Each nozzle is approved for use with the exhaust fan dampered,
undampered with the fan on, or undampered with the fan off. It
is not required that the fan be shut down or the exhaust duct be
dampered for the system to operate properly. Each nozzle is
approved to protect exhaust ducts of unlimited length.
1. Model NL-P.
The Model NL-P nozzle is a one (1) flow point nozzle
designed for the protection of exhaust ducts. One (1) or
two (2) Model NL-P nozzles can be used on a single duct
branch.
A single Model NL-P exhaust duct nozzle can protect a square
or rectangular duct with a maximum perimeter of 50 inches
and a maximum one-side length of 17 inches. It can also
protect a round duct with a maximum circumference of 50
inches and a maximum diameter of 16 inches (see Figure 3-1).
The nozzle must be installed on the centerline of the duct and
aimed directly into the duct opening (see Figure 3-2).
Two (2) Model NL-P exhaust duct nozzles can protect a
square or rectangular duct with a maximum perimeter of
84 inches and a maximum one-side length of 34 inches.
They can also protect a round duct with a maximum
circumference of 84 inches and a maximum diameter of
26.5 inches. When two (2) Model NL-P nozzles are used to
protect a single duct, the cross sectional area of the duct
must be divided into two equal symmetrical areas. The
nozzle must then be installed on the center line of the area
it protects and aimed directly into the duct opening (see
Figure 3-2.1).
Model NL-02.
The Model NL-D2 nozzle is a two (2) flow point nozzle
designed for the protection of exhaust ducts. Only one (1)
Model NL-D2 nozzle can be used on a single duct branch.
A single Model NL-D2 exhaust duct nozzle can protect a
square or rectangular duct with a maximum perimeter of
75.5 inches and a maximum one-side length of 25 inches.
It can also protect a round duct with a maximum circum-
ference of 75.5 inches and a maximum diameter of 24
inches (see Figure 3-1). The nozzle must be installed on
the centerline of the duct and aimed directly into the duct
opening (see Figure 3-2).
Model NL-D3.
The Model NL-D3 nozzle is a three-0 flow point nozzle
designed for the protection of exhaust ducts. One (1) or two
(2) Model NL-03 nozzles can be used on a single duct branch.
A single Model NL-D3 exhaust duct nozzle can protect a
square or rectangular duct with a maximum perimeter of
100 inches and a maximum one-side length of 33 inches.
It can also protect a round duct with a maximum circum-
ference of 100 inches and a maximum diameter of 31.75
inches (see Figure 3-1)
The nozzle must be installed on the centerline of the duct
and aimed directly into the duct opening (see Figure 3-2).
Two (2) Model NL-D3 exhaust duct nozzles can protect a
square or rectangular duct with a maximum perimeter of 150
inches and a maximum one-side length of 66 inches. They
can also protect a round duct with a maximum circumference
of 150 inches and a maximum diameter of 47.5 inches. When
two (2) Model NL-D3 nozzles are used to protect a single duct,
the cross sectional area of the duct must be divided into two
equal symmetrical areas. The nozzle must then be installed
on the centerline of the area it protects and aimed directly
into the duct opening (see Figure 3-2.1).
NL-P Nl.-OX NL-03
5' WAX --_ 24' MAX 3t7T MAX
XI. + 2W - 50 MAX XI. + 2W 755' MAX XI. 4. 2W tOO MAX
-
----.-.------. A ---•--- 8 -------. W
-I. 57' MAXI - -I. IT 444.5- -L 33' MAX)
- ---r
12.S* MAX -'-----+----IS5'MAX ----+---4 2S' MAX
__ jl
2.5' MAX ISS MAX - .- 25' MAX
Figure 3-1. Duct Nozzle Coverage Limitations.
ULEX 3831
November 1, 199
CHAPTER II
NOZZLE PLACEMENT
REQUIREMENTS 9
Nozzles used with the Pyro Chem Model PCL-1 65/275/550 wet
chemical extinguishing systems have been tested in accord-
ance with the requirements of Underwriter's Laboratories Inc.,
Underwriters Laboratories of Canada, and Factory Mutual
Research.
These systems have been found to be effective when applied
within the limitations established by that testing. It is, therefore,
imperative that the nozzle placement requirements detailed in
this section be followed. When the hazard is of such a size that
it exceeds the limitation of a nozzle, additional nozzles are to
be used. In no instance shall any nozzle be used to protect an
area greater than its Listed or Approved coverage.
Nozzles have been developed to protect the following hazards:
A. Exhaust Duct G. Synthetic Rock
B. Hood and Plenum Charbroiler
C. Deep Fat Fryer H. Radiant Charbroiler
D. Griddle I. Natural Class "A"
E. Range Top Charbroiler
F. Range/Griddle Upright Broiler
Combination Chain Broiler
A. EXHAUST DUCT PROTECTION
Model NL-D Nozzle (Tip #721) - This nozzle has been
developed to protect ducts of unlimited length with a maximum
of 100 inch perimeter. For ducts with a maximum of 100 inch
permimeter, a single exhaust duct nozzle can be used. Where
the exhaust duct perimeter is between 100 and 150 inches,
two nozzles must be used. These nozzles have been Listed and
Approved for application where the exhaust duct is dampered,
undampered with fan off, or undampered with fan on. It is not
required that the fan be shut down or the exhaust duct be
dampered for the system to operate properly.
The nozzles must always be installed on the centerline of the
area they protect. If the duct is larger than 100 inch perimeter,
the cross section of area must be subdivided into two equal
symmetrical areas. One nozzle must then be installed at the
midpoint of the area they protect. The nozzles must always
be installed so that they aim directly into the duct. (See Figure
2-1).
As previously stated, nozzles are Listed and Approved to pro-
tect ducts of unlimited length. A single nozzle will protect cir-
cular ducts of 100 perimeter (314 inch diameter). Rectangular
ducts of 100 inch perimeter may also be protected with a single
nozzle provided no side of the rectangle exceeds 33'/3 inches
in length.
Two nozzles can be used to protect circular ducts up to 150
inch perimeter (471/2 inch diameter). In situations where two
nozzles are used to protect a rectangular duct of 100 to 150
inch perimeter, the longest side of the rectangle must not ex-
ceed 50 inches. (See Figure 2-2).
Model NL-P Nozzle (Tip #722) - The Model NL-P has been
developed to protect ducts of unlimited length with a maximum
of 50 inch perimeter. For ducts with a maximum 50 inch
perimeter, a single nozzle can be used. Where the exhaust duct
perimeter is greater than 50 inches additional nozzles must be
used. These nozzles have been Listed and Approved for ap-
plication where the exhaust duct is dampered, undampered
with fan off, or undampered with fan on. It is not required that
the fan be shut down or the exhaust duct be dampered for the
system to operate properly.
UL EX3830
ULC CEX812
MAY 1 1988
The nozzles must always be installed on the centerline of the
area they protect. If the duct is larger than 50 inch perimeter,
the cross section of area must be subdivided into two equal
symmetrical areas One nozzle must then be installed at the
midpoint of the areas they protect. The nozzles must always
be installed so they aim directly into the duct. (See Figure 2-1).
As previously stated, nozzles are Listed and Approved to pro-
tect ducts of unlimited length. A single nozzle will protect cir-
cular ducts of 50 inch perimeter (16 inch diameter). Rectangular
ducts of 50 inch perimeter may also be protected with a single
nozzle provided no side of the rectangle exceeds 17 inches in
length.
Two nozzles can be used to protect circular ducts up to 84
inches in perimeter, (26% inch in diameter). In a situation where
additional nozzles are used to protect rectangular ducts larger
than 50 inches in perimeter, the cross sectional area of the duct
must be divided into equal symmetrical areas as previously
stated. Each individual area must satisfy the limitation of 50
inches in perimeter with a maximum side of 17 inches. (See
Figure 2-2).
The Model NL-P (Tip #722) will still maintain a flow number
of one and will follow the branch piping requirements for the
duct branch. A maximum of two flow numbers will be allow-
ed per branch.
100.NL.D
50.NL-P
PERIMETER 31 Y. -NL-D
- 16-NL-P
DIAMETER
CIRCULAR I
NOZZLE
L2,W
j
,NL-D 33 max
NL-P 17 max
NL-D 25.0 max
NL-P 12.5 max
Figure 2-1. Nozzle Coverage Limitations
3'-0- 6-0 6.0
30'-O MAXIMUM
PLENUM LENGTH
Figure 2-3. Nozzle Placement in Plenum
CENTER LINE
OF PLENUM
Fil TFR
MINIMUM
HEIGHT
OF N-LP
NOZZLE
END VIEW
Figure 2-4. Nozzle Placement in Plenum for Model NL-P
NL-D 150 MAXIMUM
PERIMETER
1/2W
______ '3 J 1/41
±1
NOZZLE =
"I L
Figure 2-2 Nozzle Placement in Duct
B. HOOD AND PLENUM NOZZLE
Model NL-P (Tip #722) - The Pyro Chem plenum nozzles have
been developed to protect the plenum section of the hood. The
Model PCL- 165/275/550 systems uses the NL-P nozzle for this
application. This nozzle has been Listed and Approved to pro-
tect plenums with rectangular dimensions of 6 x 4 feet or less.
Larger plenums can be protected but the hazard areas must
be divided so that each nozzle protects an area of 6 x 4 feet
or less. Examples of plenum nozzle placement are shown in
Figure 2-3.
In addition to size limitations, nozzles must be located at the
top center of the plenum, within 4 inches of the top of the hood.
They must always be aimed in the dowward direction, toward
the filter banks. (See Figure 2-4).
Model NL-A (Tip #723) - The Model NL-A has been adapted
to protect the plenum section of the hood. This nozzle has been
Listed and Approved to protect plenums with rectangular
dimensions of 8 x 4 feet or less. Larger plenums can be pro-
tected but the hazard areas must be divided so that each noz-
zle protects an areas of 8 x4 feet or less. Examples of plenum
nozzle placement are shown in Figure 2-5.
In addition to size limitations, nozzles must be located at the
center of the V-Bank width or centered between the filter width
dimensions when it is utilized with a single bank filter plenum.
(See Figure 2-6). The NL-A (Tip #723) nozzle must be mounted
so that it is within 4 inches of the short wall it is mounted on.
The Model NL-A (Tip #723) will still maintain a flow number
of one and will follow the branch piping requirements for the
plenum branch. A maximum of one flow number will be allow-
ed per branch.
UL EX3830
ULC CEX812
MAY 1 988
1/3H
Typical Nozzle Placement
in Plenum for Model NL-A
The nozzle positioning shown is not an acceptable method of
protection because the plenum area directly under the fitting
tee is not within the discharge pattern of either nozzle.
el Figure 2-6. Single Filter Bank
C. DEEP FAT FRYER - The deep fat is protected by the Model
NL-A nozzle. When applied to the deep fat fryer, this nozzle
has been U.L. Listed and F.M. Approved to protect a hazard
area of 6.25 square feet. This area can have a maximum side
dimension of 36 inches. The hazard may consist of a single
large fryer or multiple smaller fryers.
For a single large fryer or multiple fryers spaced no more than
one inch apart, the nozzle can be located anywhere over the
fryer but it must be aimed at the midpoint. The allowable range
in nozzle height is 15 inches to 50 inches. (See Figure 2-7).
For double fryers spaced up to 12 inches apart, the nozzle must
be installed within 6 inches of the front to rear center line and
within the perimeter of the area to be protected. The nozzle
can be mounted between 22 inches and 50 inches above the
fryer surface. (See Figure 2-7).
e
Figure 2-5. V-Bank Filters
UI EX3830
ULC CEXB12 10 MAY 1 1988
- 34••
1'
Figure 3-13. Model NL-UB Nozzle Placement. Closed lop Chain Broiler.
b. Open Top Chain Broiler Coverage.
The Model NL-A nozzle is a one (1) flow point nozzle that is
used for open top chain broiler protection. The maximum
area that can be protected by an NL-A nozzles is 32" 34".
The nozzle must be located over the opening and aimed at
the center of the protected zone. The nozzle must be mounted
10' to 22° above the cooking surface. See Figure 3-14.
NOTE
Nozzle shall be located anywhere in the shaded area
and aimed at the center of the protected zone.
Figure 3-14. Model NL-A Nozzle Placement, Open Top Chain Broiler.
9. Wok Coverage.
The Model NL-R nozzle is a one (1) flow point nozzle that
is used for wok protection. A single NL-R nozzle can cover
a single wok of 14° to 24 in diameter.
The nozzle must be mounted 40" to 50" above the cooking
surface at a radius of 12" from the center of the wok,
regardless of wok diameter. The nozzle must be aimed at
the center of the protected zone. See Figure 3-14.1.
NOTE
Nozzle shall be located anywhere in the shaded area
and aimed at the center of the protected zone.
24' Dia.
Figure 3-14.1. Model NL-R Nozzle Placement, Wok.
Page
Re'.
ULEX 38:
November 1. 19
Chapter 3- System Design
Page 3-4
Rev. 3
1.1. Range Coverage.
The Model NL-RH2 is a 2 flow point nozzle that is used for
range top protection. The maximum range top area that can
be protected by a single NL-RH2 nozzle is 28" x 28". The
nozzle must be located within 5" of the center of the protected
zone, and aimed at the center of the protected zone. The
nozzle must be mounted 32" to 45" above the cooking
surface. See Figure 3-8.4.
1.2. Range Coverage.
The Model NL-F1 is a I flow point nozzle that is used for
range top protection. The maximum range top area that can
be protected by a single NL-F1 nozzle is 12" x 28". See
Figure 3-8.5.
Nozzle Location.
Side To Side Nozzle Location:
The nozzle must be located on the longest centerline of the
protected zone.
Front To Back Nozzle Location:
The nozzle must be located not more than 6" from the center
of the protected zone.
Nozzle Height:
The nozzle must be mounted 15' to 30' above the cooking
surface.
Nozzle Aiming.
The tip of the Model NL-F1 nozzle has two flat areas
designed to assist aiming. The nozzle must be positioned so
that these flat areas are parallel to the longest side of the
protected zone. See Figure 3-6.
re-.1000
I NL-RH2 Range Nozzle Placement.
NOTE
For installations that require the use of the Model
NL-RH2 or NI-Fl nozzle to protect a range in accordance
with Range Coverage 1.1 or 1.2 shown here (See Figure
3-8.4 and 3-8.5), the following additional restrictions
apply to the main supply line piping:
Minimum length, linear: 8 feet
Miminum length, equivalent: 14.1 feet
Minimum system flow points: 4
Minimum branches (total): 3
Minimum flow points before NL-RH2/Fl nozzle: 2
Figure 3-8.5. Model NL-F1 Range Nozzle Placement.
ULEX 3830
November 1, 1995
-
)yro-Chem
Pre-Engineered Fire Extinguishing Systems
Number: 96-003 Date: 3-15-96
To: Authorized Pyro Chem Kitchen Knight Fire Suppression System Distributors.
1. New Deep Fat Fryer Coverage for the PCL-Series Systems.
Pyro Chem has improved the Deep Fat Fryer coverage for the PCL-Series
Restaurant Fire Suppression Systems. This new coverage can be used for single
vat fryers whose maximum cooking area is 22" x 22". The new maximum
dimensions per nozzle are as follows:
The Model NL-F2 nozzle is.a two (2) flow
point nozzle that is used for the
protection of a single vat deep fat fryer.
The maximum area that can be protected
by two (2) NL-F2 nozzles is:
Cooking Area: 22" x 22"
Integral Drip Board: 22" x 5.75"
To protect a fryer with the above
maximum dimensions or smaller, the area
is divided into two equal areas, with a
single NL-F2 nozzle protecting each area.
Each nozzle must be located within a
section (as noted by the shaded area in
Figure 3-8.6), that is not less than 2"
from the fryer perimeter and not less
than 1" from the fryer's shortest side
centerline.
Each nozzle, regardless of its location
within its section, must be aimed at a point located at the center of the longest
side and 1" from the center of the shortest side. See the figure above.
The nozzle must be mounted 30" to 42" above the top surface of the deep fat
fryer (see the figure above).
The tip of the Model NL-F2 nozzle has two flat areas designed to assist aiming.
The nozzle must be positioned so that these flat areas are parallel to the longest
side of the protected zone. See Figure 3-8.1 in the Technical Manual. Please
refer to the enclosed Technical Manual Page 3-4c fçr complete limitations.
Pyro Chem, inc. 800-526-1079
301 Division Street 201-335-9750
Boonton, New Jersey 07005 =AX 201.335253
For applications that require the nozzles to be mounted less th
a
n
3
0
"
a
b
o
v
e
t
h
e
cooking surface, the following applies:
The Model NL-FL2 nozzle is a two (2)
flow point nozzle that is used for the
protection of a single vat deep fat fryer.
The maximum area that can be protected
by two (2) NL-FL2 nozzles is:
Cooking Area: 22" x 22"
Integral Drip Board: 22" x 5.75"
To protect a fryer with the above
maximum dimensions or smaller, the area
is divided into two equal areas, with a
single NL-FL2 nozzle protecting each
area. Each nozzle must be located within
a section (as noted by the shaded area in
the figure at the left), that is:
Not less than 6" from the fryer's longest side perimeter,
Not less than 2" from the fryer's shortest side perimeter, &
Not less than 1" from the fryer's shortest side centerline.
Each nozzle, regardless of its location within its section, must be a
i
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d
a
t
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p
o
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n
t
located at the center of the longest side and 1" from the center of t
h
e
s
h
o
r
t
e
s
t
side. See the figure above.
Each nozzle must be mounted 16" to 26" above the top surface of th
e
d
e
e
p
f
a
t
fryer (see the figure above). Please refer to the enclosed Technical
M
a
n
u
a
l
P
a
g
e
3-4d for complete limitations.
Enclosed with this bulletin are the updated Table of Contents (revise
d
3/1/96) and Revision 1 of Page 3-4c and 3-4d. To update your current man
u
a
l
,
s
i
m
p
l
y
i
n
s
e
r
t
Page 3-4c and 3-4d into the manual before Page 3-5, and remove
a
n
d
d
i
s
c
a
r
d
a
n
y
Table of Contents page and replace it with the new Table of Conte
n
t
s
.
Additional copies of these pages (or any other updated manual pages
)
c
a
n
b
e
obtained free of charge by calling Pyro Chem's Customer Service
D
e
p
a
r
t
m
e
n
t
a
t
1-800-526-1079.
2