Honeywell CT54 User Manual
CT54 Thermostat
WIRES
H
5
INSTALLATION INSTRUCTIONS
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
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
or call
3. Locate the heat anticipator scale and the heat
anticipator lever on the old thermostat (see Fig. 1).
OLD THERMOSTAT HEAT
ANTICIPATOR SCALE
HEAT ANTICIPATOR LEVER
TYPICAL LOCATION OF HEAT
ANTICIPATOR SCA
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 falling back into the wall (see Fig. 2). If there are more
than two wires connected to your old thermostat,
do not remove the wires. Visit www.honeywell.com/yourhome or call 1-800-468-1502 for further assistance with the installation.
LE
AND
THROUG
WALL
OPENING
LEVE
R
M21192
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.
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc. • • All Rights Reserved
M1964
Fig. 2. Pull wires through wall opening.
69-1696EF
CT54 THERMOSTAT
6
7
F
I
7
T
)
G
MERCURY NOTICE
If this thermostat is replacing a control that
contains mercury in a sealed tube, do not place
the old thermostat in the trash. Contact your local
waste management authority for instructions
regarding recycling and proper disposal of this
control or of an old control containing mercury in
a sealed tube.
STEP 3. CONNECT WIRES TO NEW
THERMOSTAT
IMPORTANT
All wiring must comply with local building codes
and ordinances. If you are unsure about household wiring procedures, please call your local
heating/cooling contractor.
1. Remove the cover on the new thermostat. To
remove the cover, insert your thumb into the indentation on the bottom and pull the cover away from
the thermostat (see Fig. 3).
2. Loosen the R and W terminal screws on the back
of the new thermostat (see Fig. 4).
3. Remove the two wires from the pencil and attach
one wire to the R terminal and the other wire to the
W terminal (see Fig. 4 and 5).
4. Plug the hole in the wall with insulation to prevent a
warm or cool draft from affecting the operation of
the thermostat.
COVER
R
W
M1964
Fig. 4. R and W terminals on new thermostat.
OR WRAPAROUND
NSERTION STRIP
/16 IN. (11 MM)
FOR STRAIGH
INSERTION
STRIP
5/16 IN. (8 MM
M19648
Fig. 5. Wraparound and straight wiring connections.
STEP 4. MOUNT NEW
THERMOSTAT TO WALL
Position the thermostat on the wall. Place a level
1.
on top of the thermostat and use a pencil to mark
the two mounting holes on the wall (see Fig. 6).
2. Move the thermostat to the side and drill the
mounting holes in the wall using a 1/16 in. drill bit
at the locations you marked.
3. Position the thermostat over the drilled holes and
loosely insert the mounting screws into the drilled
holes. Check the leveling of the thermostat and
tighten the mounting screws. Do not over tighten.
LEVEL
BOTTOM OF
THERMOSTAT
Fig. 3. Remove cover on new thermostat.
69-1696EF 2
M1964
DATE CODE
MODEL NO.
.18
.9
.2
.7
.5
L
.4
R
O
E
N
G
.25
.3
MOUNTING
HOLE
NOTE: MOVE TEMPERA TURE
LEVER IF IT BLOCKS
MOUNTING HOLE
MOUNTIN
HOLE
M19649
Fig. 6. Mount new thermostat to wall.
CT54 THERMOSTAT
M19650
H
STEP 5. SET HEAT ANTICIPATOR
ON NEW THERMOSTAT
1. Set the heat anticipator lever to the number that
you recorded in Step 2. Remove Old Thermostat,
sub-step 4 (see Fig. 7).
HEAT ANTICIPATOR
.18
.2
L
.25
DATE CODE
MODEL NO.
Fig. 7. Heat anticipator on new thermostat.
2. If you could not find a heat anticipator setting on
your old thermostat, use the setting listed in
Table 1 for your type of heating system.
Table 1. Heat Anticipator Setting.
Heating System
Hot Water .8
High Efficiency Warm Air (90% or
better)
Gas or Oil Warm Air .4
Electric .3
.9
.7
.5
.4
R
O
E
N
G
.3
.18
.9
.2
.7
.5
L
.4
R
O
E
N
G
.25
.3
THIS POINT
SHOULD ALIGN WIT
HEAT ANTICIPATOR
SETTING
PLACE FINGER
HERE TO MOVE
LEVER
Heat Anticipator
Setting (Amps)
.8
STEP 6. OPERATING NEW
THERMOSTAT
1. Adjust the temperature setting lever to your desired
setting. If it is too warm, lower the temperature setting. If it is too cool, raise the temperature setting.
IF YOU HAVE A PROBLEM
If. . . Then. . .
Heating system
does not come on.
Heating system runs
too long to maintain
a comfortable
temperature.
Heating system
needs to run longer
to maintain a
comfortable
temperature.
Customer Assistance
Please read and follow the provided instructions for this
thermostat. For additional information, go to
www.honeywell.com/your home
Customer Care at 1-800-468-1502.
Before calling, please have the following information
available:
• Thermostat model number and date code (refer to Fig.
6 for the location of the model number and date code).
• Type of heating system (for example: gas or oil; warm
air, hot water).
• Make sure the temperature
setting is above the room
temperature.
• Make sure the circuit breaker
is not tripped and reset it if
necessary.
• Make sure the power switch at
the equipment is in the On
position.
• Wait 5 minutes for the system
to respond.
• Verify the thermostat is level.
• Adjust heat anticipator lever
clockwise one scale mark (see
Fig. 7). Do not adjust heat
anticipator below .3 Amps.
• Verify the thermostat is level.
• Adjust heat anticipator lever
counterclockwise, in the
direction of the arrow, one
scale mark (see Fig. 7).
or call Honeywell
Place the cover on the thermostat and turn the
3.
power back on. If the heating system runs too long
to maintain a comfortable temperature, adjust heat
anticipator lever clockwise one scale mark (see Fig.
7). Do not adjust heat ancitipator below .3 Amps. If
the heating system needs to run longer to maintain
a comfortable temperature, adjust heat anticipator
lever counterclockwise, in the direction of the arrow,
one scale mark (see Fig. 7).
3 69-1696EF
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