Wiring furance fan to HRV (Vanee 90H)

Started by AllenMuskoka, October 27, 2016, 07:09:25 PM

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AllenMuskoka

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.

Admin

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.