York HFC-410A Heating Operation, POWER-SUPPLY-CONDUCTOR Size Range, Dual-Point TB, Disconnect

Page 31

FORM 100.50-EG5 (108)

is called from the thermostat, the Supply Fan will start. Ventilation functions (if equipped) will be permitted to run with an occupied signal. Economizer functions will operate with a “G” call and a call for cooling.

HEATING OPERATION

Thermostat Control

If a 7-wire thermostat (2 Cool/2 Heat) controls the unit, all zone-temperature setpoint-control is maintained at

the thermostat. With this operation, the unit remains idle until it receives a stage call from the thermostat. If “G” is called from the thermostat, the Supply Fan will start. Ventilation functions (if equipped) will be permitted to run with an occupied signal.

TABLE 22 – POWER-SUPPLY-CONDUCTOR SIZE RANGE

				Dual-Point TB

	Supply	Single-Point	Single-Point	TB 1	TB 2
	Voltage	TB	Disconnect	TB 1	TB 2
	Voltage	TB	Disconnect
	208V	(2*) 250 kcmil-500 kcmil	(2*) 2 AWG-500 kcmil	6 AWG-400 kcmil	6 AWG-350 kcmil

	230V	(2*) 250 kcmil-500 kcmil	(2*) 2 AWG-500 kcmil	6 AWG-400 kcmil	6 AWG-350 kcmil

	460V	6 AWG-400 kcmil	6 AWG-350 kcmil	14 AWG-2/0	14 AWG-2/0

	575V	6 AWG-400 kcmil	6 AWG-350 kcmil	14 AWG-2/0	14 AWG-2/0

NOTE: 2* = Dual pairs per phase

JOHNSON CONTROLS

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Contents 231-02-E Ashrae90.1 Compliant MEASimplicity Elite controller Option Indoor air quality features for the indoor environ- mentIntroduction Lower total cost of ownershipTable of Contents Features and Beneﬁts Relief System CommunicationsFilter Options Outside AIR Damper OptionsRoof Curbs Condenser Features and OptionsCabinet Features and Options Evaporator SectionAccessories Location Unit PlacementApplication Data GeneralEconomizer Duct ConsiderationsUnit Orientation Horizontal ApplicationsBuilding Pressure Control Systems VAV Supply AIR Pressure ControlHarsh Environments Condenser and Evaporator Coil Protection Copper-Fin Evaporator and Condenser CoilAcoustical Considerations This page intentionally left blank York NomenclaturePhysical Data Physical DataLow Ambient Option Min. OA Temp Minimum Airﬂow Heating Model050 051 060 061 Gas Furnaces Minimum OA Temp for Mech. CigModel Supply Blower Cooling Only Gas Heat Type ModelIplv Ieer EERAir Altitude feet Temp Altitude and Temperature CorrectionsALTITUDE/TEMPERATURE Conversion Factor Cooling Performance DATA* 50 TON Standard Capacity Cooling Performance Data 050 ModelCooling Performance DATA* 55 TON High Capacity Cooling Performance Data 051 ModelCooling Performance DATA* 60 TON Standard Capacity Cooling Performance Data 060 ModelCooling Performance DATA* 65 TON High Capacity Cooling Performance Data 061 ModelTotal Static Pressure inches of water column Supply Fan DataCFM STD. AIR BHP RPM CFM Component Static Pressure DropsAIR BHP RPM Exhaust Fan DataExhaust FAN Motor Sizing Instructions CFM STDRLA LRA Electrical Service SizingElectrical Data Load DeﬁnitionsAmps FLAUnit Size Quantity FansMorning WARM-UP Unoccupied / Occupied SwitchingControls GAS Heating OperationVentilation Control Sequences Economizer OperationExhaust Control Sequences Cooling Operation Smoke Purge SequenceLOW-AMBIENT/HEAD-PRESSURE Control Operation Supply FAN OperationSupply Single-Point POWER-SUPPLY-CONDUCTOR Size RangeHeating Operation Dual-Point TBGeneral Arrangement Drawing General ArrangementSide Supply / Rear Return DrawingTOP View DrawingsGeneral Arrangement Drawing Curb Layout DrawingUnit Weights Unit Corner Weights Guide Speciﬁcations Unit Construction WarrantiesEquipment Product SpeciﬁcationEvaporator Section Filter SectionDischarge Plenum Supply Fan SectionCondenser Section Controls Simplicity Elite Execution InstallationInspection and START-UP Supervision ALL Rights Reserved