2 Stage Furnace Thermostat Wiring. Home Heating Thermostat Wiring Diagram Wiring Diagram and Schematics furnace or heat pump, "W2" is designed for 2-stage heating Two stage thermostat wiring can sometimes present several common problems that can affect the proper functioning of the heating or cooling system
Rheem Prestige Two Stage Thermostat Wiring Diagram from schematron.org
Therefore, two stage furnace thermostats require 5, 7 or 8 wires depending on the components in the system and their performance. Since most heat pumps boast 2-stage heating, they require the "W2" wire
Rheem Prestige Two Stage Thermostat Wiring Diagram
W - White wire: The white wire is used for connecting the thermostat to the furnace or heating system I saw that the original wiring consisted of 4 wires, and wanting to make use of the 2 stages of heating, I ran a 5 wire cable, so I have 9 wires total. Goodman 2 Stage Furnace Thermostat Wiring Diagrams are similar to many other furnace wiring diagrams
Ecobee4 Wiring 2 stage Rheem Furnace + Ac + Humidifier. before sure it is connected to the C terminal on your furnace It shows the standard wire colors and connections for wiring a 2 stage thermostat for a system with 2 stage heating and air conditioning
How to Properly Wire a Coleman Furnace Thermostat A StepbyStep Guide. This complete 24-volt thermostat wiring guide covers all thermostat wiring issues from the simple to the complex - from basic 2 wire thermostat wiring common to gas furnaces all the way to 8 wire thermostat wiring for two stage heat pumps and similar HVAC systems. The new furnace has 2-stage heating, the A/C unit is single stage