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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
GeneralDetails
NameHoneywell T6 Pro Programmable Thermostat Instruction Manual
MakeHoneywell
LanguageEnglish
FiletypePDF (Download)
File size1.01 MB
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Honeywell T6 Pro Programmable Thermostat Instruction Manual