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omanalansan 10-23-2008 08:23 PM

High Rise Condo Thermostat Change
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Alright guys thanks again for all you help with all my other projects.

I need to change my thermostat in my condo unit, figured i can just buy one off the shelf at Home depot. Now this is the confusing part, I don't pay for heat/AC, its included in my condo fee. The condominium also controls hot/cold. They tell us when the heat is on for winter and when the A/C is on for summer and we can only control the blower speed and how hot we want it or cold.

My thermostat is really old unit. I've attached a pic below. The condo was built in 1975. The thermostat is made my McQuay. When i remove the face plate i see 3 wires. brown, yellow and red. Do I just purchase a normal thermostat from Home depot or do i have to get a specific thermostat that is designed for a condo. thanks in advance


hvaclover 10-23-2008 08:45 PM

Thats a speciality s'tat. No HD is gonna have that.

omanalansan 10-23-2008 08:57 PM

Do you know where i can get one?

hvaclover 10-23-2008 09:00 PM

Sorry no. That is a specialty application I don't deal with.

beenthere 10-23-2008 10:31 PM

If that all 3 speeds use to work on that stat, then there should be 4 wires.

That stat has been discontinued.

There is a replacement. Its special order.

You may have a hard time finding a place you can order it though.

Grainger might be able to get you something.

Might want to ask your neighbors if they had to replace theirs yet, and where they got theirs from.

hvaclover 10-23-2008 10:45 PM

Hey Been, what this gent got? an air handler piped to a chiller and boiler set up?

beenthere 10-23-2008 11:18 PM

They are single coil fan coil units. 2 pipe system.
The condo has a chiller and a boiler. The resident only controls the speed of the blower. And at what temp it comes on at.

The ones I work on, also have a Heat Cool push button.

The OPs is an older model yet, but its still a relabeled Honeywell.

omanalansan 10-24-2008 07:45 AM


Thanks alot for you advise. I looked up thermostat for 2 pipes system and found one on the internet. Is this what i'm looking for.


beenthere 10-24-2008 02:57 PM

Yes, that model will work.

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