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Posted by seniorgeezer on August 8, 2005, 5:53 am
I am replacing an old HVAC control unit with a new one ... but wire
markings are different. The instructions with the new unit are
unclear. Old unit is WeatherTron New is LUX.
Old - R, T, O, G, Y, X2, B, U, W. New - G,Y,W,RH,B,O,RC. Which wire
goes to which wire?
Thanks for help.
Bob
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Posted by TURTLE on August 8, 2005, 10:51 am
>I am replacing an old HVAC control unit with a new one ... but wire
> markings are different. The instructions with the new unit are
> unclear. Old unit is WeatherTron New is LUX.
>
> Old - R, T, O, G, Y, X2, B, U, W. New - G,Y,W,RH,B,O,RC. Which wire
> goes to which wire?
>
> Thanks for help.
>
> Bob
>
This is Turtle.
Here Hold My beer and Watch this !
first a lot of the Old WeatherTron units was heat pumps and the thermostat you
have will not deal with the X 2 , U , and T teminals. If not a heat pump read
below.
If not a heat pump here goes;
OLD NEW THERMOSTAT
R ----------------- Rh / RC
G ----------------- G
Y ----------------- Y
W ---------------- W
Tape off others.
Now Hand me my Beer Back !
TURTLE
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Posted by seniorgeezer on August 8, 2005, 12:39 pm
Turns out I do have a heat pump ... so it looks like my control will
not work?
The old control unit works, it just doesn't have a lot of the
programming features of the new control unit.
Thanks anyway for your help.
Bob
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Posted by Scott McDaniel on August 8, 2005, 3:55 pm
Your old thermostat (I"m assuming that's what you're talking about) is not a
"Weathertron" ... that's the name of your unit.
Your new thermostat won't work on a multi-stage heat pump, but would work on
a single stage heat pump (betting you're got a multi-stage). Take it back
(assuming they'll give you your money back, which I doubt) and buy a decent
thermostat (NOT a LUX - that's a real piece of shit) designed for a
multi-stage heat pump. Should be an 800 number for assistance with wiring
connections (hint: you won't use the wire from the T terminal on the old
thermostat).
--
Scott McDaniel
InfoTrakker Software
> Turns out I do have a heat pump ... so it looks like my control will
> not work?
>
> The old control unit works, it just doesn't have a lot of the
> programming features of the new control unit.
>
> Thanks anyway for your help.
>
> Bob
>
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Posted by hvactech2 on August 8, 2005, 5:18 pm
On 8 Aug 2005 05:53:59 -0700, "seniorgeezer"
>I am replacing an old HVAC control unit with a new one ... but wire
>markings are different. The instructions with the new unit are
>unclear. Old unit is WeatherTron New is LUX.
>
>Old - R, T, O, G, Y, X2, B, U, W. New - G,Y,W,RH,B,O,RC. Which wire
>goes to which wire?
>
>Thanks for help.
>
>Bob
Is this a heat pump? It looks as though it is by the old designations.
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