Honeywell CT54 Quick Start Manual

Honeywell Thermostats Quick Start Manual - CT54.
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INSTALLATION INSTRUCTIONS

69-1696EF

CT54 Thermostat

STEP 1. PREPARE FOR 

INSTALLATION

The CT54 Thermostat controls 2-wire, 15 Vac to 30 Vac, 
gas, oil or electric heating-only systems.

The CT54 Thermostat is not suitable for:
• cooling systems
• heating-cooling systems
• 3-wire electric heating systems

If you are unsure which thermostat model is right for your 
system, visit www.honeywell.com/yourhome or call 
Honeywell Customer Care at 1-800-468-1502.

1. Check that the following components are included:

• Thermostat
• Two one-inch screws
• Installation Instructions

2. Required tools:

• Slotted screwdriver
• Drill
• Drill bit (1/16 in.)
• Needle nose pliers
• Level
• Pencil

STEP 2. REMOVE OLD 

THERMOSTAT

1. Turn power off to the system at the furnace or at 

the fuse/circuit breaker panel.

2. If the cover does not easily pull off, remove any 

screws that may fasten the cover to the thermostat.

3. Locate the heat anticipator scale and the heat 

anticipator lever on the old thermostat (see Fig. 1).

Fig. 1. Heat anticipator on old thermostat (example).

4. Record the number that the heat 

anticipator lever points to on the heat 
anticipator scale.

NOTE: If you cannot find the heat anticipator setting on 

your thermostat, you can use a standard setting 
for your type of system when you reach Step 5. 
Set Heat Anticipator On New Thermostat.

5. Remove the screw or screws that hold the thermo-

stat to the wall and pull the thermostat away from 
the wall.

6. Remove the two wires from the old thermostat and 

wrap them around a pencil to keep them from fal -
ing back into the wal  (see Fig. 2). If there are more 
than two wires connected to your old thermostat, 
do not remove the wires. Visit www.honey-

well.com/yourhome or call 1-800-468-1502 for fur-
ther assistance with the installation.   

Fig. 2. Pull wires through wall opening.

M21192

OLD THERMOSTAT HEAT
ANTICIPATOR SCALE

HEAT ANTICIPATOR LEVER

TYPICAL LOCATION OF HEAT
ANTICIPATOR SCALE AND LEVER

WIRES 
THROUGH
WALL 
OPENING

M19645

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