THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
A low voltage (24VAC) room thermostat is required for room temperature control with the Comfort Plus system. Steffes recommends using a digital thermostat. If utilizing a mechanical thermostat, a load resistor may be necessary due to the low current draw (0.01 amps) on the heat call input circuit of the Comfort Plus system.
HEAT PUMP APPLICATIONS ONLY: Thermostat must be programmed to energize the reversing valve for cooling. If outdoor unit used requires the reversing valve be energized for heating, see Configuration Menu C006.
Please see the Table of Contents or wiring diagrams below based on the needs of the application (click on the 
icon to see that topic).
NOTE: Low voltage wires MUST never enter any line voltage enclosure.
