Quote:
Originally Posted by Jay11J  The 400 is a non-powered unit.. Did they run a wire from one of the R's down to HUM1, and then HUM2 to the humidifier? (other humidifier wire to COM) |
I'll have to check tonight. Busy day at the office...
Quote:
Originally Posted by Jay11J The IAQ can provide power if it's wired up as above. Did they add an outdoor senor to the IAQ? (Don't have to have it, but it's nice to have... I have it on mine) |
Yes, they used my existing outdoor temp sensor.
Returning to the W1/W2 issue... How exactly does the thermostat determine when Heat2 is needed? Why is it better than the timing algorithm that the furnace employs?
--Rob