- Apr 20, 2020 · The furnace was Energy Star® rated with an AFUE of 93% or better. (Trane does not make an oil furnace in the XV90 line, although it does in its XV80 line.) The XV90 was a two-stage model with a variable speed blower. (This reduces the operating cost of the furnace when it’s not too cold as compared to a single-stage model.)
- Nov 29, 2017 · Hi, I bought a Nest (3rd gen) and would appreciate some help with a wiring question: Furnace is an old Bryant Plus 90i…it’s a 2-stage gas furnace My old thermostat simply has 3 wires hooked up: W/W1, R and G Also, I do not have any zones set up My question is solely about the W wire: I don’t know much about HVAC, but having only 1 single wire for W/W1 suggests that the Bryant furnace is ...
- May 01, 2020 · If your oil furnace isn't coming on, you may see a red light illuminated on the burner unit. When lit, this red light, also called a lockout light, indicates that a safety mechanism on your furnace has caused a shutdown because it has detected a problem or recognized a fault.
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