York PHG6A24 Installation Manual

Also see for PHG6A24: Technical guide

5322625-UIM-A-041710 Johnson Controls Unitary ProductsCOMPRESSORSThe compressor used in this product is specifically designed to operatewith R-410A Refrigerant and cannot be interchanged.The compressor uses polyolester (POE oil), Mobile 3MA POE. This oilis extremely hydroscopic, meaning it absorbs water readily. POE oil canabsorb 15 times as much water as other oils designed for HCFC andCFC refrigerants. If refrigerant circuit is opened, take all necessary pre-cautions to avoid exposure of the oil to the atmosphere.POE (polyolester) compressor lubricants are known to cause long termdamage to some synthetic roofing materials.Procedures which risk oil leakage include, but are not limited to, com-pressor replacement, repairing refrigerant leaks, replacing refrigerantcomponents such as filter drier, pressure switch, metering device orcoil.Units are shipped with compressor mountings which are factory-adjusted and ready for operation.GAS HEATThese two stage gas-fired heaters have direct spark ignition.GAS PIPINGProper sizing of gas piping depends on the cubic feet per hour of gasflow required, specific gravity of the gas and the length of run. NationalFuel Gas Code Z223.1 or CSA B149.1 should be followed in all casesunless superseded by local codes or gas company requirements. Referto Tables 7 and 8.The BTU content of the gas may differ with locality. The value should bechecked with the local gas utility.GAS CONNECTIONThe gas supply line should be routed through the 1-5/8” hole located onthe right side of the unit. See Figure 3 for the location. The unit is sup-plied with a rubber grommet that fits in this hole and is used to sealaround the gas pipe. THIS GROMMET MUST BE INSTALLED INORDER TO PREVENT LEAKAGE OF AIR AND WATER INTO THEHEATING/CONTROLS COMPARTMENT.Gas piping requirements:1. A drip leg and a ground joint union must be installed in the gas pip-ing.2. When required by local codes, a manual shut-off valve may have tobe installed outside of the unit.3. Use wrought iron or steel pipe for all gas lines. Pipe thread sealantshould be applied sparingly to male threads only.MODELS: PHG4A24 PHG4A30 PHG4B36 PHG4B42 PHG4B48 PHG4B60NOMINAL TONNAGE: 2.0 2.5 3.0 3.5 4.0 5.0COMPONENTDirect Drive Indoor Fan DataFan Size (Inch) 11 x 8 11 x 8 11 x 10 11 x 10 11 x 10 11 x 10Type Centrifugal Centrifugal Centrifugal Centrifugal Centrifugal CentrifugalMotor HP each 1/3 1/2 1/3 1/2 1/2 3/4 3/4 3/4 1RPM 1200 Max 1200 Max 1200 Max 1200 Max 1200 Max 1200 MaxFrame size 48 48 48 48 48 48FiltersFilter Size A A B B B BQuantity - SizeField-supplied external filters must be sized so as not to exceed 300 fpm air velocity through disposable filters. Forinternal filter use, a filter rack kit is available. Consult the instructions supplied with that kit for replacement filter sizes.Filter sizes: A=20x10 (2 each), B=20x10 (3 each).Table 6: Physical Data (Continued)CAUTIONThis system uses R-410A Refrigerant which operates at higher pres-sures than R-22. No other refrigerant may be used in this system.CAUTIONDo not leave the system open to the atmosphere. Unit damage couldoccur due to moisture being absorbed by the POE oil in the system.This type of oil is highly susceptible to moisture absorptionCAUTIONExposure, even if immediately cleaned up, may cause embrittlement(leading to cracking) to occur in one year or more. When performingany service that may risk exposure of compressor oil to the roof, takeprecautions to protect roofing.CAUTIONDo not loosen compressor mounting bolts.!!!!NOTICEThere may be a local gas utility requirement specifying a minimumdiameter for gas piping. All units require a 1/2 inch pipe connection atthe gas valve.Table 7: Natural Gas Pipe Sizing Chart 11. Maximum capacity of pipe in cubic feet of gas per hour (based upon a pres-sure drop of 0.3 inch water column and 0.6 specific gravity gas).LengthIn FeetNominal Inches Iron Pipe Size1/2” 3/4” 1” 1-1/4”10 132 278 520 1,05020 92 190 350 73030 73 152 285 59040 63 130 245 50050 56 115 215 44060 50 105 195 40070 46 96 180 37080 43 90 170 35090 40 84 160 320100 38 79 150 305