Humidifiers and Dehumidifiers - Wiring for Honeywell H360A,B Powered Flow Through Humidifer to Trane XR90
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mjc1001
12-10-08, 12:11 PM
I've seen lots of posts for different wirings, but I am a bit confused and figured I'd start fresh. I need help with the proper wiring for this combination: HE360A,B Powered Flow-Through Humidifer and a Trane XR90 Furnace. This is the current wiring:
The Humidifer has a 110V power suppy that goes from the humidifer directly to a plug. There are 2 red wires and 2 yellow wires that come out of the bottom of the humidifer.
My goal is to not use the sailing switch and have the humidifier come on when the blower comes on. I've seen info on the HUM and EAC and I have both terminals open on the circuit board within the Trane XR90. It seems that the EAC is what I need to use, but I am confused on what wires go where, if I need to use the red wires, if I need to step down the yellow wires with a transformer or what. The Humidistat model is H8908B, but I hope to replace it with an all in one Thermostat/Humidstat from Honeywell.
the wiring directions that came with the Honeywell are very confusing and offer many different scenerios. Any help would be greatly appreciated. Thanks!
The Humidifer has a 110V power suppy that goes from the humidifer directly to a plug. There are 2 red wires and 2 yellow wires that come out of the bottom of the humidifer.
My goal is to not use the sailing switch and have the humidifier come on when the blower comes on. I've seen info on the HUM and EAC and I have both terminals open on the circuit board within the Trane XR90. It seems that the EAC is what I need to use, but I am confused on what wires go where, if I need to use the red wires, if I need to step down the yellow wires with a transformer or what. The Humidistat model is H8908B, but I hope to replace it with an all in one Thermostat/Humidstat from Honeywell.
the wiring directions that came with the Honeywell are very confusing and offer many different scenerios. Any help would be greatly appreciated. Thanks!
Jay11J
12-11-08, 08:43 PM
It seems that the EAC is what I need to use,
I would suggest the HUM.. EAC is going to power up any time the blower is on.. HUM will power up when the heat is called for.
You can wire an outlet to the HUM, Then you can plug the HE360 right into that out let.
DO NOT use the Red Wires.. Leave that alone.
Run the two yellow wires right down to the humidistat.
I would suggest the HUM.. EAC is going to power up any time the blower is on.. HUM will power up when the heat is called for.
You can wire an outlet to the HUM, Then you can plug the HE360 right into that out let.
DO NOT use the Red Wires.. Leave that alone.
Run the two yellow wires right down to the humidistat.
mjc1001
12-12-08, 11:31 AM
Thank you very much. I wired it as you suggested and it works perfectly. My last question is what would be your recommendation on running it. Seeing as it only runs when the heat kicks on, should the humidistat always be in the on position for the dry winter months? Or should I have it set to a particular percentage? We keep the heat at around 68 F during the day, and we lower it to 62 F at night (It usually never kicks on at night- we live in a cape and the 2nd floor gets very warm overnight).
Jay11J
12-12-08, 01:29 PM
40% is fine, but if you have older windows, and they are frosted or very wet, then lower it. Follow the chart some what on the humidistat to what the temps outside to indoor suggested settings.