Heat Pump With Oil Furnace Backup Wiring

How to wire a heat pump for control there may be a time when you will want to change your old heat pump thermostat with a new heat pump thermostat.

Heat pump with oil furnace backup wiring. I used the honeywell vision pro 8000 t stat and outdoor temp bulb for fossil fuel back up. The common c wire doesn t control heating or cooling. I have added a split system heat pump to an oil furnace. There will be times when the heat pump and the oil burner are working at the same time depending on the heating demand.

During most of the year the heat pump component will be more than adequate to cool or heat your home as desired. Ac heat pump with standard air handler and single stage electric backup heat standard heat pump thermostat heat pump condenser 24 volt fan only operation common air conditioning heat pump reversing valve electric backup heat low voltage connection some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire. But when temps dip low instead of switching to a heating panel your heat pump will turn off and activate the oil furnace backup. The cooling transformer 24 volt is connected to r and the heating 24 volt is connected to rh.

A heat pump condenses heat present in the outside air usually down to about 30 degrees fahrenheit depending on the region and the amount of moisture in the air and pumps it into the home. We have other articles here that will help you with thermostat wiring these other articles help you with thermostat wiring colors and thermostat wiring diagrams in this article we will provide specific information for wiring a heat pump for control. Dual fuel systems heat pump with furnace dual transformer systems systems that have more than one r wire whole home humidifiers and dehumidifiers compatible with nest learning thermostat only. To just automatically switch to the oil system at 35 degree outdoor temperature would not be.

This is a traditional heat pump thermostat however in a lot of cases heat strips are engaged only because that is the backup heat. A heat pump with oil furnace backup combines the benefits of both systems. A fan center was needed to control the fan in cooling.