York HA300 Technical Manual

Contents

036-21345-001-B-0105Unitary Products Group 3FEATURES• Copeland Scroll compressors provide both high effi-ciency and reliability.• Condenser coils are constructed of copper tubes andaluminum fins for durability and long lasting efficientoperation.• Crankcase heaters that will be de-energized when thecompressor is operating.• Both high and low pressure controls. Since these con-trols are self-contained, there are no capillary lines to bedamaged.• Solid state or internal line break compressor motor pro-tection.• Class 2, 24-volt thermostat control circuit.• A sight glass and filter-drier is shipped in the unit's con-trol box for field installation in the liquid line near theevaporator coil. Two are provided on all 30, 40 and 50ton models.• Copper stub-outs are factory mounted on the suctionand liquid lines to simplify the field piping connections.• Multiple controls to provide stable system operation atambient temperatures down to 40ºF.• Capacity reduction for more economical operation andmore even temperature levels within the conditionedspace.• A lockout circuit to prevent the unit from cycling on safetycontrol.• Pumpout on unit startup to prevent allowing liquid refrig-erant returning to the compressor.*Rated in accordance with ARI Standard 360 (60 Hz).EER = Energy Efficiency Ratio at full load - the cooling capacity in Btu’sper hour (Btuh) divided by the power input in watts, expressed in Btuh perwatt (Btuh/watt).TABLE 1: RATINGS*CondensingUnitEvaporatorBlower UnitCapacity,MBH EERHA300 LA300 320 10.0HB360 LB360 376 9.5HB480 LB480 485 8.8HB480 LB600 510 9.7HB600 LB600 600 9.5TABLE 2: UNIT APPLICATION DATAVoltage Variation 1Min./Max.1 Utilization range “A” in accordance with ARI Standard 110.380/415V-3-50 342/456Ambient Air on Condenser CoilMin./Max. 40°F/125°F 22 These units can operate in an ambient temperature of 125°F pro-viding the wet bulb temperature of the air entering the evaporatorcoil does not exceed 67°F.