Honeywell T6 Pro Programmable Thermostat Instruction Manual
Wiring heat pump systems
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.
1H/1C Heat Pump System
Power [1]
Rc [R+Rc joined by Slider Tab] [2]
3H/2C Heat Pump System
(TH6320U only) [10]
R
R
Power [1]
Rc [R+Rc joined by Slider Tab] [2]
Y
Compressor contactor
Y
C
Compressor contactor (stage 1)
24VAC common [3]
C
24VAC common [3]
O/B Changeover valve [7]
Fan relay
O/B Changeover valve [7]
Fan relay
Aux Auxiliary heat
G
G
2H/1C Heat Pump System [8]
Power [1]
Rc [R+Rc joined by Slider Tab] [2]
E
Emergency heat relay
R
Y2 Compressor contactor (stage 2)
L
Heat pump fault input
Y
Compressor contactor
C
24VAC common [3]
Dual Fuel System
Power [1]
Rc [R+Rc joined by Slider Tab] [2]
O/B Changeover valve [7]
Fan relay
Aux Auxiliary heat
R
G
Y
Compressor contactor (stage 1)
24VAC common [3]
E
Emergency heat relay
Heat pump fault input
C
L
O/B Changeover valve [7]
Fan relay
Aux Auxiliary heat
G
2H/2C Heat Pump System [9]
Power [1]
Rc [R+Rc joined by Slider Tab] [2]
R
E
Emergency heat relay
Y2 Compressor contactor (stage 2 - if needed)
Y
Compressor contactor (stage 1)
L
S
S
Heat pump fault input
Outdoor sensor
Outdoor sensor
C
24VAC common [3]
O/B Changeover valve [7]
Fan relay
Y2 Compressor contactor (stage 2)
Heat pump fault input
G
L
NOTES
Wire specifications: Use 18- to 22-gauge thermostat wire. Shielded cable is not required.
[1] Power supply. Provide disconnect means and overload
[7] In Installer Setup, set changeover valve to O (for cool
protection as required.
changeover) or B (for heat changeover).
[2] Move R-Slider Tab on UWP to the R setting. For more
[8] In ISU set Heat system type to Heat pump. 1 compressor
information, see “Setting Slider Tabs” on page 3
and 1 stage of backup heat.
[3] Optional 24VAC common connection.
[9] In ISU set Heat system type to Heat pump. 2 compressors
and 0 stage of backup heat.
[6] In Installer Setup, set system type to 2Heat/2Cool
Conventional.
[10] In ISU set Heat system type to Heat pump. 2 compressors
and 1 stage of backup heat.
5
| General | Details |
|---|---|
| Name | Honeywell T6 Pro Programmable Thermostat Instruction Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.01 MB |

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