How To Wire A Two Stage Thermostat The w2 thermostat wire controls the second stage heating system, and the aux 2 controls the secondary stage of the auxiliary heating system (or emergency heat system). only multi stage heating systems will have these two wires, and they are either blue wire or white wire. This one explains the 2 stage thermostat and how it is wired. this video is part of the heating and cooling series of training videos made to accompany my w.
How To Wire A 2 Stage Thermostat After almost 2 years of having the components to set up 2 stage thermostat controlled heating, i was finally able to wire it up.original ecobee installation. Here’s how to wire a thermostat using the color code and, fyi, each terminal’s purpose. attach the red wire to the r terminal (call for heating and or cooling). attach the green wire to the g terminal (fan). attach the white wire to the w terminal (heat). attach the yellow wire to the y terminal (ac). Nest thermostat: amzn.to 2gtrhaanest room sensors: amzn.to 36vc9igfavorite smart home devices: amazon shop onehoursmarthomein. 2 wire thermostat wiring. 2 wire thermostat wiring—as the name suggests—needs two wires, including red wire for power and white wire for heating. you can only find this type of wiring in furnaces. as you might have expected, 2 stage thermostat wiring is straightforward because you don’t have a lot of wires to deal with.
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