Furnace Eac Terminals. electrical No C Wire Terminal on Furnace Home Improvement Stack However the EAC and HUM terminals are blank on my circuit board, no way to connect to them I've opened the furnace, and nothing is labeled EAC or appears to be intended to have anything else hooked up to it beyond what is already there
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Most EAC terminals are rated to 1A at 120v I'm not sure about that control board specifically, but there may be a "hum" terminal on the board that will supply 120v switch with heating fan speed The HUM terminals feed the 120VAC to primary side of the transformer, and the 24VAC goes to humidistat (Honeywell) and then to water valve.
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Humidifiers and Dehumidifiers - Wire Aprilaire 700M to my furnace Trane XV80 - Hello everyone, In the middle of installation of Aprilaire 700M, I ran into this issue: how to wire 24V transformer to furnace board I would connect the EAC-H terminal from the furnace board to the Wht/Blk wire on the relay; I would connect the EAC-N terminal from the furnace board to the Wht/Yel wire on the relay; Outputs: 3 prong outlet, assuming normally open condition Edit 2: There is also a "EAC-1" terminal that is energized "whenever the blower operates".
The Significance of the Terminals in a Furnace Appliance Video. Whole-home humidifier instructions show simply wiring the transformer needed for the controller into the 120V "EAC" terminals on my furnace This seems like it wouldn't help since it's only available during the call for heat
Rewire ABCD to standard terminals (R, G, Y, W, C) at the furnace. EAC terminal are energized as soon as the fan starts blowing in both ac and heat. However the EAC and HUM terminals are blank on my circuit board, no way to connect to them