This unit doubles as an outdoor thermostat and emergency heat relay. The thermostat is a single pole double throw device that is adjustable from 0° to 45° Fahrenheit and is designed for applications with split or package cooling and heat pump products. The emergency heat relay will bypass the outdoor thermostat when the indoor thermostat is set to emergency heat operations.
This kit may be utilized to lock out electric heat in the indoor unit. The kit can be used to lock out all stages of electric heat (one stage for 3kw to 10kw and both first and second stage in 15kw to 20kw). This kit can also lock out only second stage in electric heat units with two stages of electric heat. In this case the first stage of electric heat can be energized from the thermostat and the second stage locked out by the kit. By installing an emergency heat switch type thermostat the outdoor thermostat will be by-passed when the emergency heat is energized (E terminal).