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Step 4. Wire Wallplate Terminals - Honeywell CT3550 Owner's Manual

Weekday, saturday and sunday programmable heat and/or cool low voltage (20 to 30 vac) thermostat and wallplate
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STEP 4. WIRE WALLPLATE TERMINALS

IMPORTANT
All wiring must comply with local codes and ordinances. If
unsure about household wiring procedures, call your local
heating/air-conditioning contractor.
Refer to the labels you placed on the wires when you removed the
old thermostat (see illustration).
Match the letter of your old thermostat wire with the corresponding
terminal letter on your new thermostat. Refer to Table 2.
Remove the factory-installed jumper connecting terminals R and
RC if wires are connected to both of those terminals.
For wiring diagrams, if needed, see pp 21-22.
Loosen the terminal screws. Slip each wire beneath its matching
terminal. Wraparound and straight connections are both
acceptable, (see illustration). Tighten the terminals.
FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).
Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation.
69-1284—2
FOR STRAIGHT INSERTION
STRIP 5/16 IN. (8 MM).
M4826
8
M16425

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