A Consumer question submitted to Aprilaire:
I have an 8346 that runs the heat pump in my home. It works well, but I desire to have control over the temperature offset when the backup (electric) heat comes on. Ideally, I'd like the electric backup to come on only if the actual temperature was more than 3 degrees off of the set temperature. I don't mind the temperature swing and I'd rather save the money.
After talking with someone from Home Depot, this weekend I purchased an 8366 to replace the 8346 and have control the secondary stage offset. However, when I got home, it appears the terminal board for the 8366 is not the same as the 8346. Can you tell me what wires go to which? Or is the 8366 not able to control a heat pump?
Aprilaires' response:
The Model 8366 is not a heat pump thermostat so you will not be able to use it.
The Model 8346 is a heat pump thermostat and you can adjust the differential from 1, 2, and 3 degrees. If you set the differential to 2 degrees the heat would need to fall 2 degrees below the set point before the heat pump would come on. Then it would have to drop another 2 degrees before the electric heat would come on.
The directions for changing the differential are in the operating instruction. Please let us know if you have any other questions.
I have an 8346 that runs the heat pump in my home. It works well, but I desire to have control over the temperature offset when the backup (electric) heat comes on. Ideally, I'd like the electric backup to come on only if the actual temperature was more than 3 degrees off of the set temperature. I don't mind the temperature swing and I'd rather save the money.
After talking with someone from Home Depot, this weekend I purchased an 8366 to replace the 8346 and have control the secondary stage offset. However, when I got home, it appears the terminal board for the 8366 is not the same as the 8346. Can you tell me what wires go to which? Or is the 8366 not able to control a heat pump?
Aprilaires' response:
The Model 8366 is not a heat pump thermostat so you will not be able to use it.
The Model 8346 is a heat pump thermostat and you can adjust the differential from 1, 2, and 3 degrees. If you set the differential to 2 degrees the heat would need to fall 2 degrees below the set point before the heat pump would come on. Then it would have to drop another 2 degrees before the electric heat would come on.
The directions for changing the differential are in the operating instruction. Please let us know if you have any other questions.
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