DETERMINE POWER PACK SIZEUSE BTUs INSTEAD OF LENGTH OF RUNSelect the most efficient power pack for a beer system by calculating its total BTU (British Thermal Unit) load. Each power pack’sBTU capacity is a numerical expression of the heat it can remove from a beer system as it circulates glycol. Each beer system hasa 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 BTUcapacity, the compressor in the unit will need to run longer to maintain the glycol bath temperature. This will overwork the powerpack compressor, and ultimately shorten its life. The goal is to have long compressor run times and equal rest times (or as equal aspossible). Determining the right power pack to handle a beer system capacity is accomplished with a simple formula.BTU FORMULACalculate using 100 BTUs per faucet, and trunkline BTU's per foot. Add these totals together and multiply by 1.4 to find the total BTUcapacity required.EXAMPLENO. OFFAUCETS14x100x10.0TOTALSYSTEMBTUsBTUCAPACITYx1.4NO. OFFAUCETS1400=100TOTALTRUNKLINE(B)(SEE TABLEBELOW)1400x2800TOTAL SYSTEM BTUs (A+B)TOTALSYSTEMBTUs3920=TRUNKLINEBTUsFEET OFTRUNKLINEBTUs POWERPACK MUSTPRODUCETOTALFAUCETS(A)BTUsxTOTALTRUNKLINE(B)(SEE TABLEBELOW)TOTAL SYSTEM BTUs (A+B)2800=TRUNKLINEBTUsFEET OFTRUNKLINE140TOTALFAUCETS(A)BTUs=BTUs POWERPACK MUSTPRODUCEBTUCAPACITYxIn this example the you would round up to the next size power pack at 5,100 BTU's1/4" TRUNKLINESYSTEMS UP TO 50 FTBTU'sPART NO.per ftCDI242-BF5.9CDI442-BF6.3CDI542-BFPRODUCTLINESSYSTEMS UP TO 125 FTBTU'sPART NO.per ft2CDI252-BF6.04CDI452-BF6.56.55CDI552-BFCDI642-BF6.56CDI842-BF7.0CDI1044-BFPRODUCTLINES3/8" TRUNKLINESYSTEMS UP TO 750 FTBTU'sPRODUCTLINESPART NO.per ft2CDI232-BF6.324CDI432-BF6.846.75CDI532-BF7.25CDI652-BF7.16CDI632-BF7.568CDI852-BF7.68CDI832-BF8.087.910CDI1054-BF8.310CDI1034-BF8.910CDI1244-BF8.212CDI1254-BF8.912CDI1234-BF9.512CDI1644-BF9.016CDI1454-BF9.514CDI1434-BF10.014CDI1042-BF*7.510CDI1654-BF9.716CDI1634-BF10.516CDI2054-BF10.920CDI2034-BF11.020CDI2454-BF10.324CDI1032-BF*8.810CDI1052-BF*8.410*Trunklines supplied with two 1/2" glycol lines| 1225/16" TRUNKLINE
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