Honeywell T6 Pro Serie Notice D'installation page 5

Wiring heat pump systems
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.
1H/1C Heat Pump System
Power [1]
R
[R+Rc joined by Slider Tab] [2]
Rc
Compressor contactor
Y
24VAC common [3]
C
O/B Changeover valve [7]
Fan
G
W Do not use this terminal for heat pump
applications!
2H/1C Heat Pump System [8]
Power [1]
R
[R+Rc joined by Slider Tab] [2]
Rc
Compressor contactor
Y
24VAC common [3]
C
O/B Changeover valve [7]
Fan
G
Aux Auxiliary heat
Emergency heat
E
Heat pump fault input
L
W Do not use this terminal for heat pump
applications!
2H/2C Heat Pump System
(TH6320U only) [9]
Power [1]
R
[R+Rc joined by Slider Tab] [2]
Rc
Compressor contactor (stage 1)
Y
24VAC common [3]
C
O/B Changeover valve [7]
Fan
G
Compressor contactor (stage 2)
Y2
Heat pump fault input
L
W Do not use this terminal for heat pump
applications!
NOTES
Wire specifications: Use 18- to 22-gauge thermostat wire. Shielded cable is not required.
[1] Power supply. Provide disconnect means and over-
load protection as required.
[2] Move R-Slider Tab on UWP to the R setting. For
more information, see "Setting Slider Tabs" on page
3
[3] Optional 24VAC common connection.
[6] In Installer Setup, set system type to 2Heat/2Cool
Conventional.
[7] In Installer Setup, set changeover valve to O (for
cool changeover) or B (for heat changeover).
3H/2C Heat Pump System
(TH6320U only) [10]
Power [1]
R
[R+Rc joined by Slider Tab] [2]
Rc
Compressor contactor (stage 1)
Y
24VAC common [3]
C
O/B Changeover valve [7]
Fan
G
Aux Auxiliary heat
Emergency heat
E
Compressor contactor (stage 2)
Y2
Heat pump fault input
L
W Do not use this terminal for heat pump
applications!
Dual Fuel System (TH6320U / TH6220U only)
Power [1]
R
[R+Rc joined by Slider Tab] [2]
Rc
Compressor contactor (stage 1)
Y
24VAC common [3]
C
O/B Changeover valve [7]
Fan
G
Aux Auxiliary heat
Emergency heat
E
Compressor contactor (stage 2 - if
Y2
needed) [11]
Heat pump fault input
L
Outdoor sensor
S
Outdoor sensor
S
W Do not use this terminal for heat pump
applications!
[8] In ISU set Heat system type to Heat pump. 1 com-
pressor and 1 stage of backup heat.
[9] In ISU set Heat system type to Heat pump. 2 com-
pressors and 0 stage of backup heat.
[10] In ISU set Heat system type to Heat pump. 2 com-
pressors and 1 stage of backup heat.
[11] Dual fuel with Y2 only for TH6320U.
5