White-rodgers 01F79 111S1 Heat Pump Thermostat

Product Description

The WHITE-RODGERS 01F79 111S1 is a digital economy heat pump thermostat designed for residential and light commercial heat pump systems requiring two-stage heating and single-stage cooling control. It operates on 20 to 30 volts with a maximum draw of 1.5 amps and uses electronic switching. The control range spans 45 to 99 degrees F, giving technicians a wide setpoint window for both occupied and unoccupied building profiles. The unit is hardwired for primary power and includes battery backup to retain programming and maintain control during brief power interruptions. Licensed HVAC technicians are the typical installer for this class of thermostat.

This thermostat is suited for residential and light commercial heat pump installations where a straightforward, cost-effective digital control solution is needed. The 2 heat and 1 cool configuration matches standard single-zone heat pump systems with two stages of heating. The wide temperature control range of 45 to 99 degrees F accommodates both comfort and setback scheduling needs in a variety of installation environments, including vacation properties, rental units, and commercial suites where economy-grade controls are specified.

Key Features

• Digital economy-class heat pump thermostat with electronic switching
• 2 heat and 1 cool staging for standard single-zone heat pump systems
• Control range of 45 to 99 degrees F (7 to 37 degrees C)
• Operates on 20 to 30 volts AC low-voltage systems
• Hardwired primary power with battery backup for program retention during outages
• Maximum current draw of 1.5 amps

Compatibility

Designed as an OEM-style replacement or new-installation thermostat for residential and light commercial heat pump systems requiring 2 heat and 1 cool low-voltage electronic control.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable local codes and the equipment manufacturer's wiring diagram. Always disconnect power at the air handler or furnace control board before removing the existing thermostat or making new wiring connections. Verify system voltage is within the 20 to 30 volt operating range before energizing the thermostat. Battery backup cells should be installed at the time of mounting to ensure uninterrupted program retention.