User Guide

Checkout

After installing a thermostat, make an initial check of the switch action. Remove the

thermostat cover by removing the two (2) thermostat cover screws. Verify the switch action

by listening to and watching the switch contacts, using a volt-ohm meter between the proper

sides of the switch, or by observing the controlled device.

1. Turn each setpoint dial to a temperature above ambient.

2. Turn the setpoint dial setting down gradually.

Calibration

All thermostats are calibrated at the factory and normally do not require any such attention.

However, if recalibration is necessary for any reason, proceed as follows:

1. Disconnect power to thermostat.

2. Set the adjusting dial to correspond to actual room temperature.

3. Remove thermostat cover, remove screw that secures right-hand side of insulator, fold

back insulator, and remove contact cover. See Figure 3.

Figure-3 Part Identification.

Caution: Do not breathe on the thermostat or handle excessively as this affects the

accuracy of the final calibration.

4. If the right contact blade is not made to the “R” contact, use a 3/16" open end wrench

(TOOL-11) to turn calibration screw clockwise (looking at head of screw) until blade just

makes “R” contact.

Note: Each complete revolution of the screw changes calibration approximately 6°F

(3.3°C).

5. If the right contact blade is made to the “R” contact, turn the calibration screw slowly

counterclockwise until the element makes the “B” contact.

6. Repeat steps 4 and 5 for the left contact blade. Thermostat is now properly calibrated.

7. Replace contact covers, insulator, and thermostat cover.

Thermostat Part Number Make Contact Break Contact

TC-1161, TC-1161-770, TC-1161-116, TC-1161-602 R & R1

TC-1161-479, TC-1161-530, TC-1161-531 R B1

Thermostat Part Number Make Contact Break Contact

TC-1161, TC-1161-770, TC-1161-116, TC-1161-602 B & B1

TC-1161-479, TC-1161-530, TC-1161-531 B1 R