Power Options; Terminal Designations - Honeywell FOCUSPROTM TH5000 Series Installation Manual

Power options

Keep wires in this
shaded area
Wiring

Terminal designations

Shaded areas below apply only to
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
Rc
R
Y
TH5110D
C
W
G
TH5220D
Y2 W2 G W C
TH5220D
TH5320U
Y2 W2 G W C
TH5320U
Remove factory-
installed jumper
only for two-
transformer
systems.
TH5320U/TH5220D
TH5110D
Rc
R
Y
C
TH5220D
W
G
Y R Rc L
TH5320U
Y2 W2 G W C Y R
Y R Rc
L
Y2 W2 G W C Y R
FocusPRO
Insert batteries for primary
or backup power.
Connect C
(optional if batteries are installed).
or as otherwise noted.
Heat Pump Terminals:
Rc 24VAC power from cooling
transformer
R 24VAC power from heating
transformer
O/B Changeover valve
Y Compressor contactor (stage 1)
Y2 Compressor contactor (stage 2) -
TH5320U
G Fan relay
Aux Auxiliary heat relay*
E Emergency heat relay*
L Sends output when set to Em. Heat
C 24VAC common
Rc
*Aux and E terminals combined on
R
Y
TH5110D
C
O/B
G
E Aux G C Y R
TH5220D
Rc
L E Aux
Y2 Aux G C Y R
TH5320U
E
Rc L Y2 Aux

TH5110 / TH5220 / TH5320
TM
for primary AC power
only
Rc
R
Y
C
O/B
G
Rc
G C Y R Rc
Rc
G C Y R Rc
E
TH5320U only.