Variable Speed Furnace Thermostat

A dual fuel system which is comprised of a gas furnace and a heat pump should be connected to a thermostat or control system that can accommodate the specific heating set points.

Variable speed furnace thermostat.

A two stage or variable speed system may only be operating at a single speed because the thermostat or control system doesn t allow for two stage wiring. The google nest thermostat e is only compatible with single speed system fans. These digital thermostats adjust the temperature automatically throughout the day. The modulating thermostat outputs a pulse width modulated signal on its v terminal that controls the gas valve on the furnace over a 40 100 power range.

The trane comfortlink 1050 or 850 thermostat that comes with your new variable speed furnace has the ability to read temperature and humidity and turn the system on when relative humidity not just temperature spikes beyond your comfort threshold. The best smart thermostats for 2020. Better airflow control has several benefits. Save you as much as 33 percent on heating costs and up to 15 percent to 25 percent on cooling.

According to the thermostat manual amplitude of this signal is about 10 vdc frequency is 1 hz and the pulse width is variable 350 to 950 milliseconds in steps of 50 msec. Advanced models can switch back and forth between heating and air conditioning during seasonal transitions.