The White Rodgers 179 is a heavy-duty SPDT (Single Pole Double Throw) heating/cooling room thermostat designed for line voltage applications. It controls combination heating and cooling equipment, suitable for fans or water solenoids on convectors or similar heavy-duty uses. Below are the key specifications, installation, operation, and instructions.
Assemble tools: Screwdriver, wire strippers, level. Disconnect power at main fuse or circuit breaker before installation. Label all wires prior to disconnection.
NOTE: If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or electrician.
These room thermostats are specially designed to control combination heating and cooling equipment that operates on line voltage. These controls are suitable for fans or water solenoids on heating/cooling convectors or any similar application that requires a heavy duty room thermostat with single pole, double throw (SPDT) switch action.
Operator: Save these instructions for future use! FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
Do not exceed the specification ratings. All wiring must conform to local and national electrical codes and ordinances.
This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction. This control has been accurately calibrated at the factory. Any attempt to calibrate this control will void the White Rodgers warranty.
CAUTION! To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Following installation or replacement, follow appliance manufacturer's recommended installation and/or service instructions to insure proper operation.
WARNING! Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard.
| Electrical Rating | A.C. Motor Rating Full Load Current | A.C. Motor Rating Locked Rotor Current | Non-Inductive | |
|---|---|---|---|---|
| 120 VAC | 7.4 A | 44.5 A | 24 A | |
| 240 VAC | 3.7 A | 22.2 A | 20 A |
These controls have a single pole, double throw (SPDT) snap action switch. The top left-hand terminal (red) is the common terminal. The top right-hand terminal (blue) has open-on-rise switch action. The bottom center terminal (white) has close-on-rise switch action.
Disconnect power. Remove old thermostat if present, label wires. Mount the thermostat base to the wall. Connect wires to terminals: Red (common), Blue (cooling/open on rise), White (heating/close on rise).
Proper location of the heavy duty room thermostat is very important to insure acceptable performance. The following general rules will help determine proper location:
Secure cover and restore power.