What Is The B Terminal On A Thermostat
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If you have a wire labelled b but do not have a separate wire labelled o, connect it to the ecobee thermostat's o/b terminal. If you see o and b as separate wires in your current setup, we recommend booking a pro near you to install your ecobee. Occasionally, the wire labelled b may in fact be the common wire (c), which is needed to power an ecobee. The o/b terminal is for heat pump systems and is used for the reversing valve.
If the b option/position is selected the reversing valve defaults to the cooling mode. It is extremely import that the correct mode is selected. If you get it reversed the heat pump will cool in the heat. What is the b terminal on a thermostat? The w/b terminal controls the heat relay or valve. When the thermostat calls for heat, a signal is sent to power up the furnace and the blower fan or the boiler, heating your home. The o/b terminal on the subbase of your thermostat, controls the reversing valve in your heat pump systems outdoor unit. The reversing valve is the valve that switches the heat pump between heat mode and cool mode. Manufactures make two basic heat pump designs when referring to reversing valve controls.
My Thermostat With Separate O And B Terminals - HVAC - DIY Chatroom Home Improvement Forum
My Thermostat With Separate O And B Terminals - HVAC - DIY Chatroom Home Improvement Forum
My Thermostat With Separate O And B Terminals - HVAC - DIY Chatroom Home Improvement Forum
Thermostat With Separate O And B Terminals - General DIY Discussions - DIY Chatroom Home
Thermostat With Separate O And B Terminals - General DIY Discussions - DIY Chatroom Home
Thermostat Wiring Question - Ask the Community - Wyze Community
Thermostat With Separate O And B Terminals - General DIY Discussions - DIY Chatroom Home
Thermostat With Separate O And B Terminals - General DIY Discussions - DIY Chatroom Home
I have a Baystat240a connected to a Trane system, I want to replace it with a Nest thermostat
Thermostat With Separate O And B Terminals - General DIY Discussions - DIY Chatroom Home
