Author Topic: Wiring furance fan to HRV (Vanee 90H)  (Read 307 times)

Offline AllenMuskoka

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Wiring furance fan to HRV (Vanee 90H)
« on: October 27, 2016, 07:09:25 PM »
Hoping you guys can help me, I have a Vanee 90H that is controlled by a dehumidistat.  Its installed in the Simplified Installation so it needs to have the furnace fan to work effectively.  Is there a way to wire the furnace fan to come on when the dehumidistat calls for the vanee?
I see the interlock option in the manual but that seems to only run the Vanee when the furnace is on.

Thanks for any suggestions.

Offline Admin

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Re: Wiring furance fan to HRV (Vanee 90H)
« Reply #1 on: October 27, 2016, 08:04:18 PM »
See the attached wiring diagram.  Your dehumidistat should be wired to B and G.  Install a piece of 3 wire from the furnace to HRV. 

Wire the HRV NO terminal to the furnace R terminal. 

Wire the HRV C terminal to the furnace G terminal, and remove the G wire that is attached there, coming from the thermostat. 

Marrette the HRV NC wire with the G wire, you removed, coming from the thermostat. 

Now when the HRV is turned on it energizes G and starts the furnace fan.