HomeMy WebLinkAboutDesign NarrativeAPPENDIX B
DESIGN NARRATIVE
ASLC Heat Recovery Project
AEA Renewable Energy Fund Round VII Application
DESIGN NARRATIVE
FOR
HEAT RECOVERY
PROJECT
TO RECOVER WASTE HEAT FROM
EXHAUST FAN EF-4, EXHAUST FAN EF-6, IT SERVER ROOM,
TISSUE STORAGE ROOM, ELECTRICAL ROOM,
MECHANICAL ROOM, NECROPSY FREEZER CONDENSER
FOR
ALASKA SEALIFE CENTER
301 RAILWAY AVENUE
SEWARD, ALASKA 99664 USA
FINAL DESIGN NARRATIVE COMPLETED AUGUST 5, 2010
UPDATED FOR AEA ROUND 7 GRANT APPLICATION - SEPTEMBER 2013
Your Clean Energy
TABLE OF CONTENTS
EXECUTIVE SUMMARY — HEAT RECOVERY SYSTEM COMPONENT COSTS.......................3
INTRODUCTION (UPDATED FROM THE AUGUST 5, 2010 EVALUATION BY YCE)...............4
EXISTING ASLC HEAT PRODUCTION AND DESIGN DEMANDS (NAMEPLATE CAPACITY).5
MONTHLY SEA WATER TEMPERATURES AND HEAT PUMP / HEAT RECOVERY
OPERATION..............................................................................................................................6
HEAT RECOVERY FROM EXHAUST FANS AND OTHER EXISTING BUILDING SOURCES ...7
OPINION OF PROBABLE COST FOR HEAT RECOVERY PROJECT.......................................8
'Celebrate the power of nature' . with YourCleanEnergy .
DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/18/13 PAGE 3 OF 10
EXECUTIVE SUMMARY - HEAT RECOVERY SYSTEM COMPONENT COSTS
Summary Opinion Of Probable Cost
Heat Recovery System - ASLC Heat Pump Proiect
EF-4
$49,200
EF-5 &IT Servers
$40,910
Animal & Necropsy Freezers
$7,800
FC-701 & 702
$23,566
Tissue Storage (FC-703)
$25,625
Controls and Instrumentation
$45,500
Subtotal before contingency
$192,601
20% Construction Contingency
$39,000
$231,601
Construction Inspection Services
$18,399
Total Project Cost
$250,000
NOW Evaluation Of Heat Recovery System [with EF-0 & F--5 wade heat recovery as financial driver) - AGAINST HEATING OIL
Net Present Worth (NPW)
I _ _ _
YEAR
I
Descripton Of Financial Bement
0
1
2
3
4
5
10
20
Total Project Cost For Heat Reemery
$250.000
Gnd Elect -1 5 hp PG Pumps 4%/yresc
$1 020
$1,061
$1.103
$1,147
$1,193
$1.241
$1 510
$2.235
20 yearsof Glycol Pumping - Present Worth
$20,400
$1 020
$1 020
S1,020
$1,020
$1.020
$1 020
$1.020
O&M Cost with 6%/yr inflation
$3 000
$3.180
$3 37'.
$3,573
$3,787
$4 015
$5,373
$9.621
20 yrs; O&M Present Worth
$73,728
53,058
$3 -7
$3 176
$3,237
$3,300
$3,630
$4 39'
#2 Fuel Oi' Savad Wth 6%/yrescalation
$53.918
$57 153
$60582
$64,217
$68.070
$91,093
$163.134
Discount Rate Factor (P/F)
4%
09615
C.9246
0 889
1.8.548
08219
0.6756
04564
20 yrs#2 fuel oil saved -Present Worth
$1,250,081
$51.842
$52 844
$53.858
$54.893
$55,947
$61.543
$74.454
Net Present Worth of Project $905,953-$202,235-$153.528 -$103.867 -$53,232 $272.125 $905.953
Years To Payback Initial Investment Payback = 5 years
Classic formula: pw(B) I Q + pw (O&M)) - 3.63 Benefft / Cost Ratio
Description Of Financial Bement
YEAR
20
0
1
2
3
4
5
10
Total Project Cost For Heat Recovery
$250.000
G^d Elect - " 5 hp PG P-mp • Year 1
$1.020
$1,061
$1,103
$1 147
$1 193
$1 241
$1 5'0
$2 235
20 years Glycol Pumping - Present Worth
$20,400
$1 020
$1,020
$1,020
$1.020
$1.020
$1.020
$1.020
O&M Cost - Year 1
$3 000
$3.180
$3 371
$3,573
S3,787
$4 0.5
$5 373
$9.621
20 yrs O&M - Present Worth
$73,728
$3,058
$3117
$3176
$3,237
$3 300
$3 630
S4 391
#2 Fuel Oi; Saved In Year'
$54.043
$57.286
$60,723
$64,366
$68.228
$91 305
$163 513
D scount Rate Factor (P/F)
4%
09615
09246
0 889
08548
0.8219
06756
0.4564
20 yrs boiler electricity saved - Present Worth
$1,252.981
$51.962
$52 966
$53 983
$55.020
$56'M
$61 685
$74 627
Net Present Worth of Project
$908,853
-$202,115
-$153.286
-$103.499
-$52 737 $980
$273437
$908 853
Years To Payback Initial Investment
Payback =
5 years
votes Current rate of gnd electricity -s SO 104 (4%'year esc) current cost of heat-ng o is $3.65/gallon (6%/year esc)
input = annual glycol pumping cost = 15 HP pump running 2417 @ S0101KWH
input = value of annua #2 fuel or saved = 19' MBH 'EF4 & EF-5 runnng 24.7. = 13.936 gal/yr @$3 65/ga
,nput = value of electric haler saved = 19' MBH (EF4 & EF5 running 24/7) = 490,236KWWyr @SO ' 04/KWH
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/1 a/13 PAGE 4 OF 10
INTRODUCTION (UPDATED FROM THE AUGUST 5, 2010 EVALUATION BY YCE)
The Alaska SeaLife Center (ASLC) is the only marine research aquarium in the State of Alaska and one
of the northern most on the planet. The Seward Association for Advancement of Marine Science
(SAAMS) is the non-profit corporation that established the Alaska SeaLife Center which was opened to
the public in May 1998. The Exxon Valdez Oil Spill Settlement Fund provided $26 million to help build the
$56 million facility. Other funding was provided through grants, revenue bonds, and corporate and private
donations. The city of Seward donated the seven -acre waterfront site for the SeaLife Center. The facility
was designed in 1996 by Livingston Slone, Inc., an architecture, planning and design firm based in
Anchorage.
While the SeaLife Center receives approximately 20% of its annual budget from visitor fees and retail
sales; the remaining portion of the financial income needed to maintain the facility is derived from federal,
private and foundation grant funding. With recent escalations in both electricity and heating oil costs, and
reductions in federal funding, the SeaLife Center is motivated to reduce its monthly operational expenses
through both energy efficiency and evaluating heat production methods that are more cost effective than
continued direct use of heating oil and grid electricty. The SeaLife Center is also interested in reducing its
current production of greenhouse gas (CO2) as part of the greater mission to preserve and protect the
fragile marine environment of Alaska.
Under the direction of CEO Ian Dutton and General Manager Darryl Schaefermeyer, the Alaska Sealife
Center secured YourCleanEnergy LLC to complete an economic evaluation of a seawater heat pump
system in March 2009. In 2010, ASLC received for a demonstration seawater heat pump project a total
of $426,000 in grant funding from the Alaska Center For Energy & Power (ACEP); and an additional
$286,000 in grant funding from the Alaska Energy Authority (AEA). These grant funds provided a total
project budget of $713,300 for the design, procurement, construction and construction inspection
of the new system.
In July, 2010, ASLC secured the services of YourCleanEnergy LLC in association with EDC, Inc, to
complete mechanical and electrical design of the demonstration seawater heat pump system. The final
design is expected to be completed by early November 2010, and ASLC plans to procure equipment
through the fall and winter so that installation of the new system can be completed by March 2011. It is
self evident that the months of March through May present the coldest seawater temperatures that will be
encountered during the heating season, and thus this is an ideal time to start up and commission the
system.
The demonstration -seawater heat pump prMecthas had the desired result# reducing-heating-W-usage
associated with ASLC's air handlers, slab heat and with domestic hot water production. The heat
recovery project described herein has the additional goal of making use of exhaust fan and other
waste heat in the building to enhance the performance of the heat pump system.
In 2012, with the assistance of grant monies from the M.J. Murdock Foundation, ASLC secured the
services of YourCleanEnergy LLC in association with EDC, Inc, to complete mechanical and electrical
design of the proposed heat recovery system. Using current construction cost opinions, fuel and
electricity escalation, labor escalation and discount rate, the Net Present Worth evaluation of this project
indicates a very favorable economic return on investment. The payback is in the range of five years using
only the energy recovered from Exhaust Fans EF-4 and EF-5, these fans currently waste heated air to the
outside. The quantity of heated that is anticipated to be recovered from the exhaust fans on a continuous
basis is in the range of 191 MBH, depending on the temperature of the evaporator loop.
ASLC is making application to the Alaska Energy Authority Renewable Energy Grant Fund Round 7 as a
means of assisting with the construction cost of the heat recovery project. If successful in receiving grant
funding under this AEA program, the heat recovery project would be installed in the fall of 2014
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9118/13 PAGE 5 OF 10
EXISTING ASLC HEAT PRODUCTION AND DESIGN DEMANDS (NAMEPLATE CAPACITY)
For the purpose of reference, the following table is included to show the design capacity and demands of
existing heating equipment and loads in the ASLC facility (heat pumps are not included):
SUMMARY OF ASLC HEAT PRODUCTION & DESIGN DEMANDS (NAMEPLATE)
Heat Production Eauioment Delivers Heat To: MBH* %of Total Cauaoity
Boiler No. 1 - Fuel Oil - 87.9% Eff
185F Main Glycol Loop
2911
38.60%
Boiler No. 2 - Fuel Oil - 87.9% Eff
185F Main Glycol Loop
2911
38.60%
Boiler No. 3 - Electric - 500 KW
185F Main Glycol Loop
1706
22.62%
Electric Unit Heater (EUH-1)
]4
0.19%
Total Heating Capacity
7542
*Fuel oil boilers rated at 24 gal #2 fuel oil/hr x 138 MBH/gal fuel oil x 87.9% eff= 2911 MBH
Heat Demand Eauioment Receives Heat From: MBH %of Total Demand
Pavement Heating - 12,000 LF
185F Main Glycol Loop via HX 1
1204
15.27%
AHU-5
185F Main Glycol Loop
1782
22.61%
AHU-6
185F Main Glycol Loop
1342
17.02%
AHU4
185F Main Glycol Loop
521
6.61%
AHU-7
185F Main Glycol Loop
488
6.19%
AHU-8
185F Main Glycol Loop
244
3.10%
AHU-1
185F Main Glycol Loop
144
1.83%
AHU-2
185F Main Glycol Loop
130
1.65%
AHU-3
185F Main Glycol L000
Z8
0,99%
Total AHU Demand
4729
59.990/0
Duct Coil HC-1 (Lobby)
185F Main Glycol Loop
170
2.16%
Duct Coils HC-1 thru HC 24
185F Main Glycol Loop
396
5.02%
Ceiling Unit Heaters (CUH -1, 2, 3)
185F Main Glycol Loop
140
1.78%
Wall Unit Heaters (UH-1, 2, 3)
185F Main Glycol Loop
74
0.94%
V Tube Fin BB Heaters (@600 LF)
185F Main Glycol Loop
468
5.94%
1-1/4" Tube Fin BB Heaters (@200 LF)
185F Main Glycol Loop
286
3.63%
Total Unit Heater Demand
1534
19.46%
Domestic Hot Water Tank, 630 Gal
185F Main Glycol Loop
4J6
6.28%
Total Design Heat Demand
7883
Notes: 1. Heating demands listed above taken from 1996 Livingston Slone Design Drawings
2. Max monthly fuel oil usage was 18,442gal/mo in Mar07 = 3421 MBH avg demand
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/18113 PAGE 6 OF 10
MONTHLY SEA WATER TEMPERATURES AND HEAT PUMP / HEAT RECOVERY OPERATION
Seawater temperatures recorded at the ASLC raw seawater wet well for five years were presented in the
March 28, 2009 Evaluation by YCE. For the purpose of reference they are again shown below, followed
by a discussion of their effect on heat pump operations.
Seawater temperatures recorded for the past five years (2003 through 2008) at the Alaska SeaLife
Center's raw seawater influent well were compiled to determine the average seawater temperature for
each month. The maximum monthly seawater temperature (56F) and minimum monthly seawater
temperature (37F) were also identified. As shown in the graph below, it is evident that the large mass of
seawater contained in Resurrection Bay is absorbing a significant quantity of solar heat during the
summer months and releasing the same heat slowly through the winter heating season.
ASLC Raw Seawater Temperatures for 2003-2008
56 Maximum
Monthly
Sea,. ater
Temperature
51 (F)
Average
d Monthly
Seawater
4fi Temperature
p (F)
-Minimum
41 - Monthly
Seav,ater
e. Temperature
� (F)
H 36
Jul Aug Sept Oct Nov Dec Jan Feb Mar Apr May Jun
The amount of heat contained in the influent seawater that can be used to supply heat pumps is a
function of the seawater flow rate, seawater temperature, and the amount of temperature drop achieved
in the seawater heat exchanger. The most critical time of the heating, season for heat pump op.eratiQn is
the spring months of February, March, April and May, when seawater temperatures typically fall below 41
F. The coldest seawater temperature considered in this Design Narrative is 37 F; this represents the
coldest seawater temperature recorded at ASLC in the past five years.
The effect of colder seawater temperatures on the efficiency of the heat pump system is
significant because it reduces the amount of heat that can be extracted from the evaporator loop
by the heat pump. Another factor of consideration for cold seawater temperature design is the
percentage of propylene glycol used in the evaporator loop. In the case of this project, with coldest
seawater temperature of 37F, the coldest evaporator entering temperature at the heat pump is anticipated
to be 35F. The coldest evaporator leaving temperature will then be 27F. It is necessary to freeze protect
the evaporator loop fluid to 17F (10 degrees F below its coldest leaving temperature); this requires a
minimum 20% propylene glycol concentration in the evaporator loop.
This project proposes the use of heat recovery as a means of adding additional low cost heat into
the evaporator loop in advance of the heat pump. Keeping the evaporator entering temperature as
high as possible will increase the coefficient of performance (COP) of the heat pump system; and
potentially reduce the percentage of PG required in the evaporator loop. The heat recovery potential
identified in this project of 361 MBH; the anticipated temperature rise in the evaporator loop as a
result of heat recovery is estimated to range from 1.5F to 3.OF.
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/18/13 PAGE 7 OF 10
HEAT RECOVERY FROM EXHAUST FANS AND OTHER EXISTING BUILDING SOURCES
Recovered heat from various sources is also added to the evaporator loop to keep the glycol temperature
entering the heat pump evaporators as high as possible to improve system performance. Heat is
recovered by circulating the evaporator loop glycol through coils placed in exhaust ductwork from EF-4
and EF-5. Glycol is also circulated to a fan coil unit in the IT room (replacing the existing undersized AC
unit) to provide cooling. Similar fan coil units are located in the main Electrical Room 018 and in the
Mechanical Room 010 to extract heat given off by the equipment (and secondarily provide cooling of the
rooms.) The IT room and main electrical room fan coils will have thermostatic controls to avoid
overcooling. In addition, heat from the refrigeration condensing units serving the Animal Food Storage
Freezer and the Necropsy Freezer will be extracted by converting the existing air-cooled condensing units
to liquid -cooled. Two options exist for the two refrigeration units: Addition of a heat exchanger to the
existing unit while maintaining the air cooled condenser coil, or complete replacement of the condensing
units with packaged liquid cooled condensing units. Heat recovery glycol circulation pumps will be
constant speed with one pump operating continuously and the second in standby with automatic
switchover in case of primary pump failure to maximize heat recovered from the sources.
w iES.
HEA-
HEAT
1 ALL HEAT RECOVERY LOOP
RECOVERY
gECOVERY
P P NG IS TYPE L COPPER
FROM
FROM
EF-4
BOILER
2 ALL PIPING TO BE INSULATED
149 MBH
RM 010
TO PREVENT CONDENSATION
30 MBH
"•'1='
F.
3. ALL HEAT RECOVERY COILS
GPI
_ _
WILL HAVE CONDENSATION DRAINS
4. ALL HEAT RECOVERY COILS
W ILL HAVE BALANCING OR FLO'
HEAT
REGULATING VALVE
RECOVERY
FROM
RM 118
V 8 GPM 30 MBH
HEAT HEAT
2
RECOVERY
FROM NEW FRO 1 NEW
ANIMAL NECROPSY
FOOD CONDENSER
STORAGE 30 AIBH
40 MBH
T
y
HEAT
> RECOVERY
}
1 FROM
EF•5
i 42 MBH
`l 2" 11. 8 GPRI�
31. 45 GPRI
__`
I0 GPM
TOTALHEAT
HEAT
RECOVERY
RECOVERED
FROM
HEAT RECOVERY
351 MBH
IT Rh1
GLYCOL PUMPS
30 MSH
FROM HX-3 SEAWATER _}
TO HPA 8 HP-2
HEAT EXCHANGER
EVAPORATOR LOOP HEAT PUMPS
HEAT RECOVERY
1@35F)
2216PG
365F1
SYSTEM SCHEMATIC
NO SCALE
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/18/13 PAGE 8 OF 10
OPINION OF PROBABLE COST FOR HEAT RECOVERY PROJECT
Summary Opinion Of Probable Cost
Heat Recovery System - ASLC Heat Pump Project
EF-4
$49,200
EF-5 &IT Servers
$40,910
Animal & Necropsy Freezers
$7,800
FC-701 & 702
$23,566
Tissue Storage (FC-703)
$25,625
Controls and Instrumentation
$45,500
Subtotal before contingency
$192,601
20% Construction Contingency
$39,000
$231,601
Construction Inspection Services
$18,399
Total Project Cost
$260,000
Exhaust Fan 4 Heat Recovery & Circ Pumps - Opinion Of Probable Cost
Material Labor
Item
Qtv
Unit
Cost
Man Hrs
Pumps 701 & 702, 1.5HP motors
2
EA
$3,000.00
16
6" x 3" Sch 80 PVC tee
2
EA
$400.00
4
3" Sch 80 PVC Piping
16
LF
$50.00
4
3" butterfly Valve
2
EA
$400.00
4
2" butterfly valve
4
EA
$300.00
4
2" Check Valve
2
EA
$200.00
4
2.5" Sch 80 piping
100
LF
$40.00
24
2" Sch 80 PVC Piping
180
LF
$30.00
24
Cooling Ccil CC.6
1
EA
47,500-W
1-6
Hangers and ductwork for CC-6
1
EA
$2,000.00
8
3/4" Sch 40 PVC condensate drain
40
LF
$20.00
4
Fitting Allowance
1
LS
$2,000
16
Shipping for above
1
LS
$2.000
0
Electrical & controls
1
LS
$2,000
16
by A. Baker 7/14/12
Labor Labor
Rate Extension Item Total
$75 $1,200 $7,200
$75 $300 $1,100
$75 $300 $1.100
$75 $300 $1,100
$75 $300 $1,500
$75 $300 $700
$75 $1,800 $5,800
$75 $1,800 $7,200
-$7� -$I,?M - W
$75 $600 $2,600
$75 $300 $1,100
$75 $1,200 $3,200
$75 $0 $2.000
$75 $1,200 $3,200
$10,800 $46,500
Contractor Overhead & Profit (25%) On Labor Only
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2 700
$49,200
DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT
918/13 PAGE 9 OF 10
Exhaust Fan 5 & IT Room Heat Recovery - Opinion Of Probable Cost
by A. Baker 7/14/12
Material
Labor
Labor
Labor
Item
Qtv
Unit
Cost/Unit
Man Hrs
Rate
Extension Item Total
2.5" Sch 80 piping
100
LF
$40
24
$75
$1,800
$5,800
2" Sch 80 PVC Piping
102
LF
$30
24
$75
$1,800
$4,860
1.5" Sch 80 PVC Piping
30
LF
$25
16
$75
$1,200
$1,950
1.25" Sch 80 PVC Piping
180
LF
$20
32
$75
$2,400
$6,000
Cooling Coil CC-7
1
EA
$3,000
16
$75
$1,200
$4,200
Hangers and ductwork for CC-7
1
EA
$1,200
8
$75
$600
$1,800
3/4" Sch 40 PVC condensate drain
40
LF
$20
4
$75
$300
$1,100
Fan Coil FC-704
1
EA
$2,800
8
$75
$600
$3,400
Hangers and valves for FC-704
1
LS
$2,000
4
$75
$300
$2,300
Fitting & Valve Allowance
1
LS
$2,000
16
$75
$1,200
$3,200
Shipping for above
1
LS
$1,500
0
$75
$0
$1,500
Electrical & controls
1
LS
$1,200
8
$75
600
$1,800
$12,000 $37,910
Contractor Overhead & Profit (25%) On Labor Only $3.000
$40,910
Animal Food & Necroosv Freezer Heat Recovery - Opinion Of Probable Co: by A. Baker 7/14/12
Material Labor Labor
Item
Qty
Unit
Cost Man Hrs
Rate
1" Sch 80 PVC Piping to/from HX-7
30
LF
$15
4
$75
1" Sch 80 PVC Piping to/from HX-8
20
LF
$15
4
$75
HX-7 For Animal Food Condenser
1
EA
$800
8
$75
1" ball valve for HX-7
2
EA
$100
4
$75
pressure regulating valve for HX-7
1
EA
$200
2
$75
HX-8 For Necropsy Condenser
1
EA.
$800
8
$75
1" ball valve for HX-8
2
EA
$100
4
$75
pressure regulating valve for HX-8
1
EA
$200
2
$75
Fitting & Valve Allowance
1
LS
$400
4
$75
Shipping for above
1
LS
$500
0
$75
Labor
Extension Item Total
$300
$750
$300
$600
$600
$1,400
$300
$500
$150
$350
$600
%1400
$300
$500
$150
$350
$300
$700
$0
$500
$3,000
$7,050
Contractor Overhead & Profit (25%) On Labor Only 50
$7,800
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DESIGN NARRATIVE ASLC HEAT RECOVERY PROJECT 9/18/13 PAGE 10OF 10
Electrical & Mechancal Room Heat Recovery - Opinion Of Probable Cost by A. Baker 7/14/12
Material
Labor
Labor
Item
O yt
Unit
Cost Man Hrs
Extension Item Total
1.5" Sch 80 branch piping to FC-701
80
LF
$20
8
$600
$2,200
1.25" Sch 80 PVC branch Piping to FC-702
12
LF
$18
4
$300
$516
2" Sch 80 PVC common Piping
60
LF
$25
8
$600
$2,100
Fan Coil FC-701
1
EA
$2,800
8
$600
$3,400
Hangers and valves for FC-701
1
EA
$1,200
4
$300
$1,500
3/4" Sch 40 PVC condensate drain
40
LF
$10
4
$300
$700
Fan Coil FC-702
1
EA
$2,800
8
$600
$3,400
Hangers and valves for FC-702
1
LS
$2,000
4
$300
$2,300
Fitting & Valve Allowance
1
LS
$800
16
$1,200
$2,000
Shipping for above
1
LS
$1,500
0
$0
$1,500
Electrical & controls
1
LS
$2,000
8
600
$2,600
$5,400 $22,216
Contractor Overhead & Profit (25%) On Labor $1,350
$23,566
Tissue Storage Room Heat Recove FC-703 - O i ion Of Probable Cost by A. Baker 7/14/12
Material
Labor
Labor
Labor
Item
Q-t
Unit
Cost Man Hrs
Rate
Extension
Item Total
2" Sch 80 PVC branch Piping to FC-703
160
LF
$25
24
$75
$1,800
$5,800
Fan Coil FC-703
1
EA
$4,500
8
$75
$600
$5,100
Floor stand and valves for FC-703
1
EA
$1,200
4
$75
$300
$1,500
3/4" Sch 40 PVC condensate drain
20
LF
$10
4
$75
$300
$500
Condensate sump pump
1
EA
$500
4
$75
$300
$800
FZimdampers
2
EA
$500
4
$75
$360
$13W
Return Grille 24" x 30"
1
EA
$200
4
$75
$300
$500
Square ductwork & transitions
1
LS
$800
8
$75
$600
$1,400
12" dia round duct
50
LF
$10
16
$75
$1,200
$1,700
12" round duct balancing dampers
3
EA
$200
4
$75
$300
$900
24" x 24" ceiling diffusers
3
EA
$100
4
$75
$300
$600
Fitting & Valve Allowance
1
LS
$800
4
$75
$300
$1,100
Shipping for above
1
LS
$1,800
0
$75
$0
$1,800
Electrical & controls
1
LS
$600
4
$75
$300
900
$23,900
Contractor Overhead & Profit (25%) On Labor Only $1,725
$25,625
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