Dispense Catalog - Flipbook - Page 122
DETERMINE POWER PACK SIZE
USE BTUs INSTEAD OF LENGTH OF RUN
Select the most efficient power pack for a beer system by calculating its total BTU (British Thermal Unit) load. Each power pack’s
BTU capacity is a numerical expression of the heat it can remove from a beer system as it circulates glycol. Each beer system has
a unique BTU load that it exerts on the power pack chilling the glycol. If the exerted BTU load exceeds 60% of a power pack’s BTU
capacity, the compressor in the unit will need to run longer to maintain the glycol bath temperature. This will overwork the power
pack compressor, and ultimately shorten its life. The goal is to have long compressor run times and equal rest times (or as equal as
possible). Determining the right power pack to handle a beer system capacity is accomplished with a simple formula.
BTU FORMULA
Calculate using 100 BTUs per faucet, and trunkline BTU's per foot. Add these totals together and multiply by 1.4 to find the total BTU
capacity required.
EXAMPLE
NO. OF
FAUCETS
14
x
100
x
10.0
TOTAL
SYSTEM
BTUs
BTU
CAPACITY
x
1.4
NO. OF
FAUCETS
1400
=
100
TOTAL
TRUNKLINE
(B)
(SEE TABLE
BELOW)
1400
x
2800
TOTAL SYSTEM BTUs (A+B)
TOTAL
SYSTEM
BTUs
3920
=
TRUNKLINE
BTUs
FEET OF
TRUNKLINE
BTUs POWER
PACK MUST
PRODUCE
TOTAL
FAUCETS
(A)
BTUs
x
TOTAL
TRUNKLINE
(B)
(SEE TABLE
BELOW)
TOTAL SYSTEM BTUs (A+B)
2800
=
TRUNKLINE
BTUs
FEET OF
TRUNKLINE
140
TOTAL
FAUCETS
(A)
BTUs
=
BTUs POWER
PACK MUST
PRODUCE
BTU
CAPACITY
x
In this example the you would round up to the next size power pack at 5,100 BTU's
1/4" TRUNKLINE
SYSTEMS UP TO 50 FT
BTU's
PART NO.
per ft
CDI242-BF
5.9
CDI442-BF
6.3
CDI542-BF
PRODUCT
LINES
SYSTEMS UP TO 125 FT
BTU's
PART NO.
per ft
2
CDI252-BF
6.0
4
CDI452-BF
6.5
6.5
5
CDI552-BF
CDI642-BF
6.5
6
CDI842-BF
7.0
CDI1044-BF
PRODUCT
LINES
3/8" TRUNKLINE
SYSTEMS UP TO 750 FT
BTU's
PRODUCT
LINES
PART NO.
per ft
2
CDI232-BF
6.3
2
4
CDI432-BF
6.8
4
6.7
5
CDI532-BF
7.2
5
CDI652-BF
7.1
6
CDI632-BF
7.5
6
8
CDI852-BF
7.6
8
CDI832-BF
8.0
8
7.9
10
CDI1054-BF
8.3
10
CDI1034-BF
8.9
10
CDI1244-BF
8.2
12
CDI1254-BF
8.9
12
CDI1234-BF
9.5
12
CDI1644-BF
9.0
16
CDI1454-BF
9.5
14
CDI1434-BF
10.0
14
CDI1042-BF*
7.5
10
CDI1654-BF
9.7
16
CDI1634-BF
10.5
16
CDI2054-BF
10.9
20
CDI2034-BF
11.0
20
CDI2454-BF
10.3
24
CDI1032-BF*
8.8
10
CDI1052-BF*
8.4
10
*Trunklines supplied with two 1/2" glycol lines
| 122
5/16" TRUNKLINE
