add a thermostat?

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  #1  
Old 06-21-03, 06:58 PM
bit_twiddler
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add a thermostat?

I have a simple forced-air HVAC system in my house. It has a gas furnace and an AC unit. There are no dampers or fancy gadgets. I have an electronic Thermostat (LUX TX1500) on a 4-wire low-voltage connection. The Thermostat is located on the ground floor.

Unfortunately, in the summer, the 2nd floor is subject to huge temp swings as the downstairs thermostat waits to detect the temp increase, then over-cools the upstairs (because I have the downstairs ducts closed), then waits for the whole cycle to happen again.

If I open any vents downstairs, the downstairs cools off before the upstairs gets a chance to, and the upstairs remains perpetually hot. I have thought about relocating the thermostat upstairs, but then I will likely have the opposite problem in the winter.

Ideally, I would like to have a thermostat in both places, but something tells me that wiring them in parallel would be a bad idea. Any suggestions?
 
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  #2  
Old 06-22-03, 07:24 AM
GregH's Avatar
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bit_twiddler:

You are correct in that trying to run two stats is not a good idea.
The anticipator needs to be in the circuit when the stat contacts open.
It sounds like a carefull air-balancing and possibly some insulating upstairs would correct your problem.
Even if you move the stat upstairs you will still have uneven temps and just shift the problem area to the main floor.
 
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Old 06-22-03, 01:30 PM
54regcab's Avatar
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Lightbulb 2nd stat

You could do this BUT you would need a master switch to send the power to one tstat or the other.
However one system in a 2 story house is your main problem and I doubt the 2 stat soultion will correct the issue.
BTW LUX is not known for keeping accurate temps BTW.
 
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