Table of Contents
Advertisement
Wiring
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage.
Disconnect power before wiring.
Keep wires in this
shaded area
Heat Pump
Heat/Cool
NOTES
R & Rc terminals
In single-transformer system, leave metal
jumper in place between R & Rc. Remove
metal jumper if two-transformer system.
B terminal
B is the common wire terminal.
W (O) terminal
If Comfort Control is configured for a heat
pump in the Installer Setup, changeover valve
is configured for cool ("O" factory setting).
F terminal (Output)
Heat pump reset. F terminal powered continu-
ously when Comfort Control is set to Em Heat.
Configure Comfort Control for 2 heat/1 cool
heat pump in the Installer Setup.
Wire specifications
Use 18- to 22-gauge Comfort Control wire.
Shielded cable is not required.
Wiring
1 Loosen screw terminals, insert
wires into terminal block, then
re-tighten screws.
2 Push excess wire back into the
wall opening. Keep wires in shaded
area as shown at left.
3 Plug the wall opening with non-
flammable insulation to prevent
drafts from affecting Comfort
Control operation.
Terminal Designations
Conventional Terminal Letters:
Y2 2nd stage compressor contactor
W2 2nd stage heat relay
G
Fan relay
W
1st stage heat relay
B
Common wire from secondary side of
cooling system transformer
Y
1st stage compressor contactor
R
Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
Heat Pump Terminal Letters:
F
Heat pump reset. F terminal powered
continuously when System is set to
Em Heat.
X2 Emergency heat relay
W1 Auxiliary heat relay
G
Fan relay
O
Changeover valve for heat pumps
B
Common wire from secondary side of
cooling system transformer.
Y
Compressor contactor
R
Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
4
Hide quick links:
Advertisement
Table of Contents
