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Wiring a Line Voltage Tstat

The Tempro line voltage tstat is designed for reliable use in heating, ventilating and refrigeration applications. The thermostat has three contact points. Most of our thermostats are wired for heating, unless specified otherwise. When you open the thermostat you should see a white wire that is at blue dot and another wire at the red (heating). The red is your power – do not move this wire. The wire on the blue dot needs to be moved to the yellow dot to be wired for cooling. Continue reading below for more information and illustrations.

WIRING IMPORTANT

All wiring should be done in accordance with applicable codes, ordinances and regulations. Use a disconnect device and overload protection to assure safe installation complying with local and national codes. Figures 1, 2 and 3 illustrate typical wiring for control of heating, cooling, refrigeration, and combination heating/cooling control systems (use copper conductors only).

General Wiring

1. Remove the four screws securing the cover to the thermostat, and take the cover off.
2. Connect wires to the appropriate terminals (heating or cooling). See wiring diagrams.
3. Place cover back on thermostat for safety.
4. Connect power supply.
5. Tighten screws on thermostat cover.
6. Turn the dial so that the desired temperature is in front of the pointer.

Checking WiringThermostat Wired for Cooling

• Turn dial to 110°F. (heating mode) device should come on, (cooling mode) device should be off.
• Turn dial to 30° F. (heating mode) device should cut off, (cooling mode) device should come on.
• As the dial passes current room temperature, you should hear a faint click from the line voltage tstat.

 

Switching Between Heating & CoolingExample Line Voltage Tstat Wiring

1. Disconnect the power supply.
2. Remove the four screws securing the cover to the thermostat, and take the cover off.
3. Switching to cooling mode: Remove the wire connected to the heating terminal & connect it to the cooling terminal.
Switching to heating mode: Remove the wire connected to the cooling terminal & connect it to the heating terminal.

For more information or troubleshooting support, click here to review the instructions.

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