Power Options; Wiring Terminal Designations - Honeywell FOCUSPRO TH5110D Installation Manual

Power options

Keep wires in this
shaded area
Wiring
Terminal designations
Shaded areas below apply only to TH5220D.
Conventional Terminals:
Rc 24VAC power from cooling
transformer
R 24VAC power from heating
transformer
W Heat relay (stage 1)
W2 Heat relay (stage 2)
Y Compressor contactor (stage 1)
Y2 Compressor contactor (stage 2)
G Fan relay
C 24VAC common. For 2 transformer
systems, use common wire from
cooling transformer.
TH5110D
TH5110D
Rc
R
Y
C
W
TH5220D
G
TH5220D
Y2 W2 G W C
TH5320U
TH5320U
Y2 W2 G W C
Remove factory-
installed jumper
only for two-
transformer
systems.
Rc
TH5110D
R
Y
C
W
G
TH5220D
Y2 W2 G W C Y R
Y R Rc L
TH5320U
Y2 W2 G W C Y R
Y R Rc
L
Insert batteries for primary
or backup power.
Connect C
(optional if batteries are installed).
Heat Pump Terminals:
Rc 24VAC power from cooling
transformer
R 24VAC power from heating
transformer
O/B Changeover valve
Y Compressor contactor
G Fan relay
Aux Auxiliary heat relay
E Emergency heat relay
L Sends output when set to Em. Heat
C 24VAC common
TH5110D
Rc
R
Y
C
O/B
TH5220D
G
Rc
L E Aux
E Aux G C Y R
TH5320U
Rc L Y2 Aux
Y2 Aux G C Y R
E

FocusPRO
TM
for primary AC power
Rc
R
Y
C
O/B
G
G C Y R Rc
Rc
G C Y R Rc
E
Rc
TH5110 / TH50