Power Options; Terminal Designations - Honeywell VisionPRO TH8000 Serie Guia De Instalacion

Power options

For 24VAC primary power, connect common
side of transformer to "C" terminal.
Wiring
Remove factory-installed jumper
only for two-transformer systems.

Terminal Designations

Conventional Terminal Letters:
R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
C Common wire from secondary side of
cooling transformer (if 2 transformers).
W 1st stage heat relay.
W2 2nd stage heat relay.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
G Fan relay.
S1 Optional outdoor or remote sensor.
S2 Optional outdoor or remote sensor.
Push excess wire back into the wall opening. Plug
wall opening with non-flammable insulation.
Shaded areas below apply only to TH8320/TH8321.
Heat Pump Terminal Letters:
R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
C Common wire from secondary side of
cooling system transformer.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
Aux Auxiliary heat relay.
G Fan relay.
E Emergency heat relay.
L
Heat pump reset (powered continuously
when System is set to Em Heat; system
monitor when set to Heat, Cool or Off).
O/B Changeover valve for heat pumps.
S1 Optional outdoor or remote sensor.
S2 Optional outdoor or remote sensor.

VisionPRO
Insert supplied batteries for
primary or backup power.
TH8000 Series
TM