Honeywell FocusPRO TH5110D - Heat Pump System Wiring Diagrams; 1 H;1 C and 2 H;1 C Heat Pump Wiring; 2 H;2 C and 3 H;2 C Heat Pump Wiring; Thermostat Physical Mounting

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Wiring
Wiring guide — heat pump systems
Shaded areas below apply only to TH5320U/TH5220D or as otherwise noted.
Thermostat mounting
Align the 4 tabs on the wallplate with
then push gently until the thermostat
snaps in place.
Push excess wire back into
the wall opening.
Plug wall opening with
non-flammable insulation.
1H/1C Heat
Pump System
Rc Power [1]
R [R+Rc joined by jumper]
Y Compressor contactor
C
O/B Changeover valve
G Fan relay
2H/1C Heat
Pump System
(TH5220D only) [8]
Rc Power [1]
R [R+Rc joined by jumper]
Y Compressor contactor
C
O/B Changeover valve
G Fan relay
Aux Auxiliary heat relay [12]
E Emergency heat relay [12]
L Sends output when set to Em. Heat [11]
2H/1C Heat
Pump System
(TH5320U only) [8]
Rc Power [1]
R [R+Rc joined by jumper]
Y Compressor contactor
C
O/B Changeover valve
G Fan relay
Aux/E Auxiliary/Emergency heat relay
L Sends output when set to Em. Heat [11]
2H/2C Heat
Pump System
(TH5320U only) [9]
Rc Power [1]
R [R+Rc joined by jumper]
Y Compressor contactor (stage 1)
C
O/B Changeover valve
G Fan relay
Y2 Compressor contactor (stage 2)
L Sends output when set to Em. Heat [11]
3H/2C Heat
Pump System
(TH5320U only) [10]
Rc Power [1]
R [R+Rc joined by jumper]
Y Compressor contactor (stage 1)
C
O/B Changeover valve
G Fan relay
Aux/E Auxiliary/Emergency heat relay
Y2 Compressor contactor (stage 2)
L Sends output when set to Em. Heat [11]
See [notes] on page 4.