Lennox HP18-211U-2P -Auxillary Heat?


Old 04-23-07, 10:04 AM
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Question Lennox HP18-211U-2P -Auxillary Heat?

I am replacing Thermostats for Lennox Model #HP18-211U-2P. This number was on top of the Unit

Does this unit require a thermost with auxillary heat connection?

There is another number: CB18-21-1D, I think that's from the outside part.

Sorry to be so lost. I could not find this model mentioned on the Lennox site so couldn't look at product manuals.
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Old 04-24-07, 09:30 PM
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That HP I d say stands for a heatpump. So make sure you get a heatpump tstat. Besure and mark all wires and also turn the power off before you start on the tstat.
Old 04-27-07, 07:45 PM
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Red face Heat Pump Yes -2 stage? with auxillary heat ?

Thanks Ed
I did find the manual finally
but the HP thermostats all say - 'not for two-stage' or 'for two stage heat' pumps and then they also have some that have no indicator for auxillary heat, which is what I thought all heatpumps have.

I paid to have all the ducts cleaned and equipment cleaned and tested, but the units weren't wired correctly the tech said. So I paid them to rewire it so I could color match the wires to an off-the-shelf thermostat.

Now I can't figure out which type to buy....

I tried calling Lennox tech support- and was on hold for 20 minutes and then gave up.

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