York ECO HFC-410A User Manual
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Contents
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JOHNSON CONTROLS26FORM 100.50-EG5 (108)Electrical DataELECTRICAL SERVICE SIZINGIn order to use the electrical service required for the cool-ing-only Eco 2 rooftop, use the appropriate calculationslisted below from U.L. 1995. Based on the configurationof the rooftop, the calculations will yield different MCA(minimum circuit ampacity), and MOP (maximum over-current protection).Using the following load definitions and calculations,determine the correct electrical sizing for your unit. Allconcurrent load conditions must be considered in thecalculations, and you must use the highest value for anycombination of loads.Load Defi nitions:• LOAD1 is the current of the largest motor – com-pressor or fan motor.• LOAD2 is the sum of the remaining motor currentsthat may run concurrently with LOAD1.• LOAD3 is the current of the electric heaters – zerofor cooling-only units.• LOAD4 is the sum of any remaining currents greaterthan or equal to 1.0 amp.Use the following calculations to determine MCA andMOP for units supplied with a single-point power con-nection:MCA = (1.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4MOP = (2.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4If the MOP does not equal a standard current ratingof an overcurrent protective device, then the markedmaximum rating is to be the next lower standard rating.However, if the device selected for MOP is less than theMCA, then select the lowest standard maximum fusesize greater than or equal to the MCA.TABLE 16 – COMPRESSOR ELECTRICAL DATAModel Compressor ModelNominal Voltage208-230/3/60 460/3/60 575/3/60RLA* LRA RLA* LRA RLA* LRA0501A ZP120 33.3 239 17.9 125 12.8 801B ZP137 48.0 245 18.6 125 14.7 1002A ZP121 33.3 239 17.9 125 12.8 802B ZP137 48.0 245 18.6 125 14.7 1000511A ZP137 48.0 245 18.6 125 14.7 1001B ZP137 48.0 245 18.6 125 14.7 1002A ZP137 48.0 245 18.6 125 14.7 1002B ZP137 48.0 245 18.6 125 14.7 1000601A ZP137 48.0 245 18.6 125 14.7 1001B ZP182 55.7 340 26.9 172 23.7 1322A ZP137 48.0 245 18.6 125 14.7 1002B ZP182 55.7 340 26.9 172 23.7 1320611A ZP154 51.3 300 22.4 150 19.8 1091B ZP182 55.7 340 25.0 172 23.7 1322A ZP137 48.0 245 18.6 125 14.7 1002B ZP182 55.7 340 25.0 172 23.7 132TABLE 17 – POWER SUPPLY VOLTAGE LIMITSPower Supply Minimum Voltage Maximum Voltage208V/3Ph/60Hz 187 228230V/3Ph/60Hz 207 253460V/3Ph/60Hz 414 506575V/3Ph/60Hz 518 632 |
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