HomeMy WebLinkAbout1984-05-01; City Council; 7727; REPLACEMENT OF THE HEATING AND AIR-CONDITIONING SYSTEM AT CITY HALLI
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L"/ CIT~F CARLSBAD - AGEND~ILL
DEPT. HD.-
CITY ATTY.
CITY MGRl
1 AB#= TITLE: REPLACEMENT OF THE HEATING AND MTG. 5/1/84 AIR-CONDITIONING SYSTEM AT CITY HALL
DEPT, p & R
RECOMMENDED ACTION:
City Couricil approve the transfer of $75,000 from the the Continaency Fund to the account of Capital Equipment in Building F-laintenance to purchase a new
heati ng/cool ing sytem in the City Hal 1 Compl ex.
ITEM EXPLANTATION:
The 16-year old heating and air conditioning unit located in the civic center requires immediate rehabilitation. The existing unit is not desianed to meet the floor space configuration, has been operating at maximum canacity for so long that its life expectancy has been shortened, and is close to comDletely breaking down.
A consultant analyzed the nroblem and recommended that the entire system needs
extensive renovation. unit with an economizer be installed.
An alternative plan would be to install separate units for the north and south sections of City Hall, Staff does not recommend this two-unit concept because it is not the most cost-effective long range plan.
It is estimated that the replacement of the existing system would cost between
The study proposes that a new energy efficient air-nix
$103,000 - $110,000.
FISCAL IMPACT:
Tile estimated costs are:
$1 00,000 hit
$11 0,Oi)O Total 10,000 Construction Drawings
$35,000 is budgeted for this expenditure in tne Capital Equipment account of Bui 1 ding Maintenance. Fund.
Fund will be $58,382.
EXHIBITS:
1. Resolution No. 75f-I 2. Air-conditioning Syster;, Analysis
$75,000 wi 11 need to be transferred from the Continaency
If Council approves this expenditure, the new balance of the rontinvencv
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RESOLUTION NO. 7581
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CARLSBAD, CALIFORNIA, APPROVING THE TRANSFER OF REVENUE FROM THE CONTINGENCY
FUND TO THE ACCOUNT OF BUILDING MAINTENANCE, CAPITAL EQUIPMENT, TO PAY FOR THE REPLACEMENT
OF THE HEATING/COOLING SYSTEM AT CITY HALL
WHEREAS, the City.wishes to replace the heating and air conditioning
system in City Hall; and
WHEREAS, $35,000 has already been budgeted for this expenditure; and
WHEREAS, an additional $75,000 is required to complete this project;
and
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of
Carl s bad as fol 1 ows :
1. That the amount of $75,000 be transferred from the Contingency
Fund account number 01 -1 9-50-2470 to the account of Bui 1 di nq Maintenance 9
Capital Equipment account number 01 -53-1 0-3900 to pay for the rep1 acement
of the heatinglcooling system in City Hall.
2. That the fund transfer is to be authorized as transfer number 120
and is on file in the Finance Department.
PASSED, APPROVED AND ADOPTED at a regular meeting of the City Council
of Carlsbad held on the 1st day of May , 1984 by the following
vote to wit:
I
AYES:
NOES; isone
ABSENT: Council Msmber Kulchin
Councill&bers Casler, Lewis, Chick and Prescott
Y+ J @dL MARY H. CASYR, Mayor
ATTEST:
ALETHA L. RAUTEN
(SEAL)
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0 FRED F. ANTELLINE, INC.
CITY OF CARLSBAD, CALIFORNIA
SUBJECT: ADMINISTRATION BUILDING
AIR CONDITIONING SYTEM ANALYSIS
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, FRED’F. ANTELLINE, INC.
MECHA NlCA L CONTRACTORS, ENGINEERS. MANUFACTURERS
POLLUTION CONTROL SYSTEMS, AIR CONDITIONING
9194 CHESAPEAKE DR., SAN DIEGO, CALIFORNIA 92123
619-278-1880, LIC. 175062
March 12, 1984
E
CITY OF CARLSBAD
1200 Elm Avenue
Carlsbad, CA. 92008
Attention: Mr. Dave Packard
Gent 1 emen :
We have completed our initial investigation of the subject H.V.A.C. system
and the attached data indicates the entire system is in need of extensive
renovation.
Blockage across the cooling and heating coils, as well as the perforated
by-pass pressure plates, indicate equipment maintenance on a scheduled basis has been lacking or non existant over the years.
Analysis of the original design specifying (2) air handling units (AH-1 and AH-2), indicate a major change is necessary to convert the existing units to true multizone units (as were originally intended).
In view of the age of the existing units, and the years of sub standard
performance, we recommend they be replaced with new multizone air handlers,
complete with new zone mixing dampers.
In addition we recommend the following outdoor equipment be replaced.
(a) B-1 Boiler (300M).
(b) C-1 Chiller (28.0 tons). (c) CT-1 Cooling Tower (95.0 GPM) .
(d)
The automatic temperature control system should also be checked out to assure all Sensing thermostats respond properly to either cooling or heating demand €or the full eleven (11) zones.
The Council Chamber Building (existing F-1 and F-2 air conditioning air handlers) are producing approximately 50% of design C.F.M. to increase the air volume in order to determine if in fact the units will produce the design air quantity. We shall also determine if the existing units are still capable of producing full rated capacity.
We are in the process of estimating the cost to furnish and install the new equipment, as outlined,and shall include the cost of adjusting and
rebalancing the entire system.
P-1, P-2, P-3, heating, chilled water and condenser water pumps.
We shall attempt
Respectfully,
FRED F. ANTELLINE, INC.
FA; le Pro j ect mg ineer
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Southwest
Engineering Service Inc. I
2436 MARKET STREET / SAN DIEGO, CA 92102 / (619) 23
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March 1, 1984
Fred F. Antelline, Inc.
9194 Chesapeake Drive
San Diego, CA 92123
Subject: Carlsbad Administration Building Air Conditioning Survey
Gentlemen:
Please find enclosed the results of our air balance survey. We found that
in all four units that a good cleaning of coils and pressure plates would
certainly be in order, but the biggest problem we found was that units
AH-1 & 2 are multizone units with a draw thru cooling coil and a blow thru
heating coil. The original design intent on a cooling call was to cool
100% of the air and reheat that portion of air necessary to satisfy the
room temperature demand by controlling the discharge multizone dampers.
With a call for cooling the discharge multizone dampers would close to the
heating coil and therefore bypass.
on the discharge of these units a pressure plate was installed in parallel
to the reheat coil.
I I I I I I I
i 0 To maintain a constant flow condition
These pressure plates through the years have become
blocked with dirt and therefore do not allow cold air to pass thru them.
We suggest that these perforated plates be removed to reduce the static
pressure and then speed these fans to full motor amperage and rebalance the
entire system.
Very truly yours,
SOUTHWEST ENGINEERING SERVICE
lh-td2.W 1. &L&/A
Wallace E. Goldie
T. 4 B. E.
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' MECvlBER OF ASSOCIATED AIR BALANCE COUNCIL
HEATING VENTILATING 0 AIR-CONDITIONING REFRIGERATION SYSTEM BALANCING EQUIPMENT TESTlh
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ASSOCIATED AIR BALANCE
COUNCIL
TEST AND BALANCE ANALYSIS REPORT
FOR
JOB ADMINISTRATION & COUNCIL CHAMBERS BLDG. - CARLSBAD
Fred F. Antelline, Inc. CONTRACTOR
ARCHlT ECT ENGINEER
-
CERTl F ICATION:
AIR DlSTRlBUTlON SYSTEM HAS BEEN COMPLETELY BALANCED AS PER REQUIRE-
MENTS OF SPECIFICATIONS AND RESULTS OF TESTS HEREIN LISTED.
dn CERTIFICATION NO. T8-01-05
BY Southwest Engineering Service
% DATE; Narch 1, 1984 APPROVED 0 PA 1. A&u A .. i Wallace E. Goldie, T. & !d 'li
National Headquarters
2146 Sunset Boulevard
Los Angeles, Calif. 90026
(213) 382-0487
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INDEX
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Fan Data AH-1, 2, F-1 & 2 .. ......... ........ 1
Supply Air Readings AH-1 .................... 2
Supply Air Readings AH-1 cont. ............... 3
Supply Air Readings AH-2 .................... 4
Supply Air Readings AH-2 cont ................ 5
Supply Air Readings AH-2 cont .......,........ 6
Supply Air Readings F-1 ..................... 7
Supply Air Readings F-2 ..................... 8
0
Original Design AIA -- Weber & Edwards
Original Mechcanical D Design -- Paoluc ci 0-Wi lli s
Original Contractor -- Thermodyne
0
1 1/8x2VP5.6 1 3/8~2VP5%65 Motor Sheave
Belts 21 ~82 21 B78
11 11 5/8~3.8
1/ 4L3 7 0 None
Zone No.
1
2
1)
F Required Test Results
‘Jel C.F.M. Vel C.F.M F P M. ffective FPM No No. Size E Area Room Outlet Code
1 CD 10x10 1.00 not stated 240 240
225 225 2
285 285 3
4
5
6 Slot 48x2
7
8
It 11 11 11 11
I1 11 11 I1 It
240 240
190 190
120 120
120 12 0
115 115
11 11 It 11 11
11 11 11 11 11
It It 11
11 11 11 11 It
It 11 It 11 I1 -- ~
Testing & Balancing Agency SOUTHWEST
I1 11 11 9
10 11 I1 fl
11 3 11 CD 10x10
11 11 It 12
13
14
15
16
17
18
It 11 It
I! 8x8 11
I1 11 11
11 It 11
I1 11 11
I1 It 11
Sheet Code
Type Code Model Mtg.
0
ENGINEERING SERVICE INC.
115 115
115 115
17 5 175
1-25 125
135 135
90 90
90 90
90 90
85 85
90 90
11 I1
It 11
11 11
It 11
?7
11 11
11 11
11 11
11 11
11 11
U It
Remarks
t
# zone
4
II)
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Testing & Balancing Agency SOUTHWEST ENGINEERING SERVICE INC.
Reg~~rtd * le% Resulh
FPM FPM f f ec t ive.
No No. Vel C.F.M. Vel C.F.M. Area Room ’ Outlet Code Size E
19 CD 10x10 1.00 not st.ated 110 110
110 110 20
21
22
23
24
25
11 11 11 11 11
165 165
150 150
160 160
150 150
11 140 140
11 I1 11 11 11
11 11 11 11 I1
I1 11 11 11 11
11 I1 11 11 11
11 11 11 11 -
Total Design 5415 3630
13
-
Sheet Code Re marks
Type Code Model Mfrg.
Zone
#
1
*
2
3
e
~esting & Balancing ~gency SOUTHWEST ENGINEERING SERVICE INC.
Required Test Results
?(el C F M. Vel C F.M.
FPM ffective FPM No No. Size E Area Room Outlet Code
1 CD 10x10 1.00 not stated 80 80
115 115
11 11 I1 ll 11 60 60
60 60
5 11 I1 11 11 I1 80 80
100 10 0 6
10 5 10 5 7
8 11 I1 11 11 11 60 60
120 120
11 11 120 120
9
10
11 11 11 11 11 11 140 140
150 15 0 12 h
160 160 1 13
14
15 CD 10x10
16
11 ll I1 11 11 2
3
ir 11 I1 11 11 4
11 11 11 11 ll
11 11 11 11 I1
I1 11 11 I1 I1
II
I1 11 It 11 11 125 12 5 9A Slot 48x2
11 I1 11 11 11
11 11 It 11 11
11 It 170 170 I1 11 11
120 120
11 11 60 60
10 0 100
18 11 tl 11 11 I1 165 165
!I 11 I1
11 11 11
11 11 It 17 I1 8x8
Sheet Code Remarks
Type Code Model Mtg.
Required Test Results
Vel C F M. Vel C.F.M. Zone A Room Outlet Code Size FPM # No No. Area
4 19 CD 10x10 1.00 not stated 155 155
170 170 I1 11 rr 11 11 20
5 21
22
23
24 Slot 48x2
25
200 200
2 10 210
170 170
I1 11 11 60 60
0 0
230 230
It 225 225
200 200
11 I1 11 It 140 140 6 29 lOXj0
130 130
150 150
145 14 5
I1 11 11 I1 11
11 11 11 11 11
I1 I1 11 11 11
11 I1 It 11 11
11 I1 11 e 26 CD 10x10
It II (1 I! 27
11 11 11 11 11 28
I1 I1 11 11 11 6 30
31
32
33
34
35
36
11 11 ll 11 I1
I1 11 11 11 11
120 120
11 160 160
110 110
110 110
u 11 I1 11 11
I1 I! I1 11
-~ ~
I1 11 I7 8x8 I1
11 It I1 11 lt
Sheet Code Re marks
Type e Code Model Mtg.
r Required ffect ive F.p M. No No. Size E Area ‘Jel C F M
Zone Room Outlet Code
#
7 37 CD 10x10 1.00 not stated
38 It r1 It I1 1r
39
40
11 11 11 11 It
11 11 11 11 11
It It 11 11 11 41
It It 11 11 I1 42
43 11 11 11 11 11 * 44 11 11 11 rt 11
Total Design 8940
Tesl Results
Vel C F.M FPM
110 110
18 0 18 0
165 165
150 15 0,
155 15 5
185 185
140 140
140 140
6000
Testing & Balancing Agency SOUTHWEST
Sheet Code
Type Code Model Mtg. e
ENGINEERING SERVICE INC.
Remarks
II)
m
Testing & Balancing Agency SOUTHWEST ENGINEERING SERVICE INC -
Reqwred Test Results
Vel C.F M. Vel C.F.M. F P.M. Room Outlet Code size E ffective FPM No No. Area
- 1 D7 48x2 LOO 230 230 160 160 Meetin@
11 11 It 80 80 11
110 110 11
110 110 It
115 115 I'
100 100 '1
100 100 It
100 100 "
11 11 2
11 11 11 11 11 3
4
5
6
7
11 It 11 11 11
11 It ir rt 11
ir 11 ir lf I1
11 ft 11 11 11
11 !t 11 11 11 8 -
1840 875
I
$heet Code Remarks
Type Code Model M+g. We used a balancing hood to read these outlets.
r
e
Required Test Results
Vel C.F.M. Vel C F.M Room Outlet Code size E ffective FPM. FPM No No. Area
1 D3 48x2 1.00 195 195 175 175 Main 0
185 18 5 60 60 Conf :? 11 11 2 D-2
3
4
50 50 ‘I I1 11 I1 11 ll
50 50 Ti ll 11 it 11 11
750 335
6
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