Step 8 Wire Wallplate Terminals - Honeywell CT3400 Instructions Manual

STEP 8 Wire Wallplate Terminals
NOTE: All wiring must comply with local codes
and ordinances. If unsure about household
wiring procedures, call your local heating/air
conditioning contractor.
Refer to masking tape labels you placed on
wires when you removed your old thermostat.
Match the letter of your old thermostat wire
with the terminal of the corresponding letter on
your new thermostat. Refer to illustrations on
pages 22 and 23.
In 5-wire installations only, be sure to re-
move the factory-installed jumper connect-
ing terminals R and Rc.
2-WIRE HEAT-ONLY (JUMPER INTACT)
W G
HEATING
RELAY OR
VALVE COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
THERMOSTAT
R R C
Y
Loosen the terminal screws and slip each
wire beneath its matching terminal. Either
straight or wraparound wiring connections are
acceptable (see illustration). Tighten terminals.
Plug the hole in the wall with insulation to
help prevent drafts from adversely affecting
thermostat operation.
FOR STRAIGHT INSERTION–
STRIP 5/16 IN. (8MM)
21
4-WIRE HEAT/COOL (JUMPER INTACT)
HEATING
RELAY OR
VALVE COIL
1
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M612A
22
FOR WRAPAROUND–
STRIP 7/16 IN. (11MM)
R R C
W G Y
COOLING
FAN
CONTACTOR
RELAY
COIL
INSTALLATION
M2486
69-0733—3
THERMOSTAT
1
M614A
69-0733—3