Prestige™ Installation Guide
Heat pump systems
1H/1C Heat Pump [8]C24VAC common
R Power [1]
Rc [R+Rc joined by jumper] O/B Changeover valve [7]
Y Compressor contactor **
G Fan relay **
2H/1C Heat Pump [9]See [notes] below.
2H/2C Heat Pump [10]C24VAC common
R Power [1]
Rc [R+Rc joined by jumper] O/B Changeover valve [7]
Y Compressor contactor (stage 1) ** Y2 Compressor contactor (stage 2)
G Fan relay **
C24VAC common
R Power [1]
Rc [R+Rc joined by jumper] O/B Changeover valve [7] Aux Auxiliary heat relay
Y Compressor contactor **
G Fan relay **
L Relay [12]
C24VAC common
R Power [1]
Rc [R+Rc joined by jumper] O/B Changeover valve [7] Aux Auxiliary heat relay
Y Compressor contactor (stage 1) ** Y2 Compressor contactor (stage 2)
G Fan relay **
L Relay [12]
**[See note on page 4]
[1] | Power supply. Provide disconnect means and overload protection as required. | |
[2] | Remove jumper (R to Rc) for systems with two transformers. Common connection | |
| must come from cooling transformer. | |
[3] | In Installer Setup, set | system type to Heat Only, No Fan. |
[4] | In Installer Setup, set | system type to Conventional with zero cooling stages. |
[5] | In Installer Setup, set | system type to Conventional with zero heat stages. |
[6] | In Installer Setup, set | system type to Conventional with 2 heat AND 2 cool stages. |
[7] | In Installer Setup, set changeover valve to O or B. | |
[8] | In Installer Setup, set to Heat Pump with 1 compressor stage and no auxiliary heat stages. | |
[9] | In Installer Setup, set to Heat Pump with 1 compressor stage and 1 auxiliary heat stage. | |
[10] In Installer Setup, set to Heat Pump with 2 compressor stages and no auxiliary heat stages.
[11] In Installer Setup, set to Heat Pump with 2 compressor stages and 1 auxiliary heat stage.
[12] “L” terminal sends a continuous output when thermostat is set to Em. Heat, and acts as a system monitor when in Heat, Cool or Off modes.
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