CT87A,B,J ROUND® THERMOSTAT
69-0274-6 10
Set the heat anticipator for your system
IMPORTANT: Setting the heat anticipator allows the thermostat to
maintain accurate temperature control.
1. Using a pencil point, move the heat anticipator pointer to the number
that you recorded in Step 3, sub-step 3. If you could not find the
anticipator setting on the old thermostat, use the setting for your type
of system shown in the table below.
2. Snap on the thermostat cover.
NOTE: If the furnace stays on beyond the thermostat set temperature,
move the anticipator pointer down by .1 ampere.
If the furnace shuts off before the set temperature is reached, move the
anticipator pointer up by .1 ampere.
Never adjust the anticipator below .3 ampere.
Check heating/cooling operation
Check heating
1. Turn the transparent dial to the farthest point left.
2. If your CT87 has a subbase, set the system switch to Heat.
3. Turn the dial until the temperature on the setting scale (Fig. 16)
exceeds the room temperature that is shown on the thermometer.
The heating system should start.
4. Turn the dial until the temperature on the setting scale is below the
room temperature that is shown on the thermometer.
The heating system should stop.
Your heating system: Heat anticipator setting:
Steam 1.2
Hot water heat 0.8
High-efficiency warm air 0.8
Standard warm air 0.4
Electric heat 0.3
8
9
HERMOMETER
SETTING SCALE
M9656
Fig. 16. Checking heating system.
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