Dual Thermostat Wiring

Single transformer systems typically use a jumper for thermostats. If you are using traditional thermostats then adding a thermostat in parallel will change the heat anticipator function in both of them.

Unique Dual Immersion Heater Switch Wiring Diagram Diagram

Green the green wire connects to the fan.

Dual thermostat wiring. White the white wire is what connects to the auxiliary heat on your system. Another diagram of thermostat wiring for two transformers. Yellow the yellow wire connects to your compressor.

If you see wires connected to terminals labeled g1 g2 g3 you will need a thermostat capable of controlling multiple fan speeds none of our retail thermostats are compatible with this system type. This is a function that reduces furnace run times to improve temperature stability. White to w red to r green to g yellow to y.

This type of wiring requires a line voltage thermostat and is not compatible with low voltage thermostats. Orange this wire connects to your heat pump if you have one. Again the color coding of the wires will be as follows.

Lastly the thermostat wiring diagram below utilizes the y2 terminal meaning the system has two stages. Repeat for the second thermostat but attach to the terminals marked thermostat 2. To account for dual transformer systems thermostats that have two r terminals rc and r or rc and rh.

If both are always connected lower the ha settings in each to fix. Attach the wire from the thermostat being fed by damper 1 to the terminals marked thermostat 1. Red now there can be two separate wires for this.

G is compatible but not g1 g2 and or g3.

Dometic Single Zone Thermostat Wiring Diagram Free Download