York THRU 060 Secure Owners Approval When the system is, Thermostat Signals Single Phase Units

Page 16

gized. Power is supplied to the compressor and outdoor fan motor, and the reversing valve switched to the cooling posi- tion. When the fan switch on the thermostat is in the “AUTO” position the indoor blower motor is energized at the cooling airflow.

3.When the demand for cooling has been satisfied, the 24 volt “Y” signal is removed, and the M1 contactor is de- energized. When the fan switch on the thermostat is in the “ON” position, the indoor blower motor continues to run. If the fan switch is in the “AUTO” position. the indoor motor ramps down over a 30-second period.

HEATING OPERATION (B1HH060 with ECM indoor motor)

1.When the fan switch on the thermostat is in the “ON” posi- tion, the 24 volts at “G” brings on the indoor blower motor at the heating flow. When the fan switch on the thermostat is in the “AUTO” position, the blower operates when there is a call for heating by the thermostat.

2.On a call for heating, the thermostat sends 24 volts to “Y” on the fan control board. After the anti-short cycle period is complete, the 24 volt signal energizes contactor coil M1 and power is supplied to the compressor and outdoor fan

66297-YIM-C-0205

motor. The reversing valve remains in the heating position. When the fan switch on the thermostat is in the “AUTO” po- sition, the indoor blower is energized at the heating airflow.

3.For units equipped with supplementary electric heat, when the heat pump cannot meet the demand, the thermostat “W” sends 24 volts to “W2” on the fan control board. This signal also is sent through the defrost control terminals “W” and “W6” and back to the fan control “W1”. The 24 volt sig- nal energizes all stages of electric heat.

4When the heating demand is satisfied, the electric heat is de-energized when the 24 volt “W” signal is removed, and the M1 contactor is de-energized when the 24 volt “Y” sig- nal is removed. When the fan switch on the thermostat is in the “ON” position, the indoor blower continues to run. When the fan switch is in the “AUTO” position, the indoor blower motor ramps down over a 15-second period.

Please refer to Tables 22 and 23 for more information.

SECURE OWNER'S APPROVAL: When the system is

functioning 1/6 properly, secure the owner's approval. Show him the location of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust tem- perature settings within the limitations of the system.

TABLE 22 - THERMOSTAT SIGNALS (SINGLE PHASE UNITS)

SIGNAL

STATE

BOARD FUNCTION

 

 

 

 

 

 

“G”

ON

FAN INSTANT ON

 

 

OFF

FAN INSTANT OFF

 

 

 

 

 

 

FAN INSTANT ON

 

ON

COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)

 

REVERSING VALVE ENERGIZED

“G” & “Y” & “O”

 

 

SYSTEM OPERATES IN COOLING

 

 

 

 

OFF

COMPRESSOR AND OUTDOOR FAN INSTANT OFF

 

FAN 60 SEC. DELAY OFF

 

 

 

 

 

 

 

FAN INSTANT ON

 

ON

COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)

“G” & “Y”

 

SYSTEM OPERATES IN HEATING

 

 

 

OFF

COMPRESSOR AND OUTDOOR FAN INSTANT OFF

 

FAN 60 SEC. DELAY OFF

 

 

 

 

 

 

 

FAN INSTANT ON

 

ON

HEATER BANK 1 ELEC. HEAT INSTANT ON

 

HEATER BANK 2 ELEC. HEAT 10 SEC. DELAY ON

 

 

“G” & “W”

 

HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON

 

 

 

HEATER BANK 3 ELEC. HEAT INSTANT OFF

 

 

 

OFF

HEATER BANK 2 ELEC. HEAT ￿￿SEC. DELAY OFF

 

 

HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF

 

 

FAN 10 SEC. DELAY OFF

 

 

 

 

 

FAN INSTANT ON

 

 

COMPRESSOR AND OUTDOOR FAN INSTANT ON

 

ON

SYSTEM OPERATES IN HEATING

 

HEATER BANK 1 ELEC. HEAT INSTANT ON

 

 

 

 

HEATER BANK 2 ELEC. HEAT 10 SEC. DELAY ON

“G” & “Y” & “W”

 

HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON

 

 

 

 

COMPRESSOR AND OUTDOOR FAN INSTANT OFF

 

 

HEATER BANK 3 ELEC. HEAT INSTANT OFF

 

OFF

HEATER BANK 2 ELEC. HEAT ￿￿SEC. DELAY OFF

 

 

HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF

 

 

FAN 60 SEC. DELAY OFF

 

 

 

 

 

FAN INSTANT ON

 

ON

HEATER BANK 1 ELEC. HEAT INSTANT ON

 

HEATER BANK 2 ELEC. HEAT 10 SEC. DELAY ON

 

 

“W”

 

HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON

 

 

 

HEATER BANK 3 ELEC. HEAT INSTANT OFF

 

 

 

OFF

HEATER BANK 2 ELEC. HEAT ￿￿SEC. DELAY OFF

 

 

HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF

 

 

FAN 10 SEC. DELAY OFF

 

 

 

16

Unitary Products Group

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Contents Replacement Parts GeneralInspection ReferenceLocation LimitationsRigging or Handling Service Access Power and Control WiringClearances Duct WorkUnit Terminal Strip ThermostatPhysical Data Electrical Data Basic Unit Motor AmpacitySize Factor MIN MAX RLA LRAElectrical Data 12 Seer Heat Pump / Electric Heat Model BHH Amps SizeElectrical Data 12 Seer Heat Pump / Electric Heat Outdoor Indoor WB TEMPERATURE, F Temperature Indoor DB Outdoor TEMPERATURE, F Temperature10.8 15.8 19.6 22.0 24.4 26.8 29.2 31.6 21.2 230/460/575 volts Side and Bottom Supply AIR Blower PerformanceVolts RESISTANCE, IWG Description CFM Additional Static Pressure ResistanceClearances Unit Size Dimension FrontWith Power to Unit and Thermostat in Heating Mode With Power to Unit and Thermostat in Cooling ModeCooling Operation Secure Owners Approval When the system is Thermostat Signals Single Phase UnitsThermostat Signals Three Phase Units Normal MaintenanceCompressor and Outdoor FAN Instant on Troubleshooting Elementary DiagramTypical Wiring Diagram Notes See YIM-C-0205$12356 Factory Typical Wiring Diagram BHH060 460-3-60 Power Supply Typical Wiring Diagram Legend See Unit CautTypical Wiring Diagram 208/230-1-60 Power Supply Typical Wiring Diagram 230-3-60 Power Supply Typical Wiring Diagram 460-3-60 & 575-3-60 Power Supply Typical Wiring Diagram Legend See page 24, 25 Typical Wiring Diagram Notes See page 24, 25