Neter66 Posted May 8, 2011 Share Posted May 8, 2011 I have a c4 stat controlling my forced air, gas fired furnace. We installed a heat recovery ventilator as well. The HRV control is a simple on/off switch with a dial that ( I'm guessing ) controls the degree of humidity added / removed during the exchange process. Question is: can the same t-stat control the furnace and the HRV? Can I use a separate stat on the HRV? Looking at the hookup, it's a simple 4 wire setup. Nothing too fancy at all. Has anyone controlled an HRV with the c4 stat? Other?ThanksD. Link to comment Share on other sites More sharing options...
tebery Posted May 9, 2011 Share Posted May 9, 2011 When my system was installed (4 yrs ago) there was not a solution. I would like to be able to control mine also, so if anyone has a solution please post. Link to comment Share on other sites More sharing options...
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