Changing Thermostats


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Old 03-21-10, 02:49 PM
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Question Changing Thermostats

I have a trane unit with a Baystat240 thermostat. Ther wires are red (r), brown (t), orange (o), green (g), yellow (y), black (x 2), blue (b) and white (w). I want to replace it with a Hunter 44860 which has r, c, y1, y2, w2, e, o, b, g and l. How do I wire this up properly? Thank you for any help.
 
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Old 03-21-10, 03:02 PM
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RH & Rc/R = red (use a jumper wire)
C = blue
Y1 = yellow
W2 = white
E = black
O = orange
G = green
Tape off the old brown thermister wire.

You must also configure for heatpump operation as described on pages 28 and 29.



 
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Old 03-24-10, 04:42 PM
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OK. First off, thank you for your reply. I now have it hooked up just as you replied (except of course it is programmed as a heat pump and not conventional).

That being said, the fan will not shut off. Did I do something wrong or is it a programming thing I missed?
 
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Old 03-24-10, 05:47 PM
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1. Recheck the wire on G (fan). Is it shorting to R (power)?

2. Many air handler have a sequencer (timer) for the fan which will have a delay before the fan turns off.
 
 

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