Nest 2 Stage Thermostat Wiring Diagram. 1 stage heat pump 1 stage heat pump 1 stage heat pump label y1 compressor relay stage 1 y2 compressor relay stage 2 g fan relay ob heat pump changeover valve rc 24vac power from cooling however without a g wire nest will not be able. The nest learning thermostat for the uk and ireland should be installed by a professional.
One trick that we use is to print out the same wiring diagram off twice. Use a pencil to mark the two screw holes. If you need help contact a local pro.
If you have an r rc or rh wire you can put it into the r connector on the nest thermostat.
Use a pencil to mark the two screw holes. Nest thermostat wiring diagram 2 stage heat pump. The nest thermostat e works with most 24v systems including forced air variable speed heat pump and radiant systems as well as common fuel types such as natural gas electricity and oil. Thermostat wiring explained guide for homeowners 2021 furnace and diagrams quality hvac wire a wyze simplified block electric heater isolation relay nest chromalox how to thermostatic principles my has only two wires am i radiant floor heating combination.