Thermostat options for Coleman EB17D?


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Old 03-26-17, 10:14 AM
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Thermostat options for Coleman EB17D?

I have an ancient analog mercury thermostat and would really like to upgrade either programmable or not. Price cap is around $60. Based on the wiring in my pictures, what options do I need to choose a thermostat. I see the auxiliary and emergency heat and have no clue what those are for. Can you link me some good thermostats i could use?
Thanks

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Last edited by PJmax; 03-26-17 at 10:22 AM. Reason: added enlarged pic
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Old 03-26-17, 10:26 AM
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Welcome to the forums.

When your heat pump can't keep up with the heating demand.... aux heat(electric) gets switched on automatically and runs with the heat pump.

If your heat pump was malfunctioning you could switch over to emergency which is electric heat only.

Needless to say.... the idea is to use the electric reheats as little as possible due to their energy usage.

Coleman has always done strange things with their thermostat wiring. See if you can post the model number from the back of the thermostat.
 
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Old 03-26-17, 12:40 PM
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Old thermostat is Coleman Evcon 3600-367A
 
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Old 03-26-17, 01:04 PM
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If you have a problem with the old stat then you can change it to an electronic type. As far as programmable... it is highly recommended to not use a setback with a heatpump in heat mode. Ok for A/C use.

Let me explain why. A heat pump delivers heat slowly and is much more cost effective than the electric heat. When the actual room temperature is 3° or more under the set temperature the electric heat (AUX) comes on to assist the heat pump. This use of electric heat wipes out the savings of just letting the heat pump run.

You'd need a thermostat for a heat pump with electric back up heat.

We'll post some choices.
 
 

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