AboutJ Cook Expertise With 25+ years experience, I am familiar with residential, commercial, and industrial HVAC equipment including but not limited to boilers, chillers, reciprocating and screw compressors. I am trained in all manners of control wiring.
Experience I currently have three HVAC licenses and Refrigeration license by the State of North Carolina. I have been in this field for over twenty years. I have been a service technician for a contractor and also worked at a state college in the repair and maintenance of steam lines and equipment. I am currently the Building Maintenance Superintendent for a municipality.
Question I have a Rheem Criterion RGDG-12EARJR furnace which works just great. Added an Aprilaire 1150 Steam Humidifier to the system and it's working great. The Aprilaire is set to run when the main fan turns on and that's all fine. But the Aprilaire can send a request for fan when it requires humidity. I don't seem to be able to locate the controls/terminals on the furnace which allow it to receive an external start for the fan. The furnace is 16 years old, so it may not have that feature. Is there a way I can do this? Thank you (in advance), Tom
Answer Tom, it would require a somewhat complicated installation of a 24 volt relay added to the control circuit. Before I explain this entire process, would you be comfortable installing this relay, or would it be more simple to have a technician come in and install it to operate the fan on a humidity call? Thanks J
