Installing a Filtrete 3m22 from a Trane weathertron


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Old 03-19-11, 08:22 PM
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Installing a Filtrete 3m22 from a Trane weathertron

I have a Trane Weathertron that I would like to replace with a Filtrete 3m22 but the wiring is a little confusing.

The wires I have are

Wires connected to

Black- X2
Orange- O
Green -G
Yellow-Y
Brown-T
Red- R
White-W
Blue-B

The options I have on the Filtrete are:

C,B,O,W,W2,Y,Y2,RH,RC,G,A

I was thinking the set-up on the new system should be:
Orange -O
Green-G
Yellow-Y
brown/Tan- tape off
Red -RH which is jumped to RC
White -W
Blue to C
Black/X2- ? I'm not sure about this one

Could you tell me if this is correct and where the Black/x2 should connect to?
Thanks Shad
 
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Old 03-20-11, 06:27 AM
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white goes to w2. x2 per your instruction booklet gets taped off. I don't like this because this thermostat gives you no control of emergency heat if your HP ever has problems, you are stuck without heat.
 
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Old 03-20-11, 10:00 AM
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It looks like you woud have to move jumper 8 to 6.
I'd return it and get a Honeywell.

"If you have a heat pump with auxiliary heat, and the heat pump is not
working properly, your thermostat will still keep your room temperature
within about 2F of the target temperature.
•To select Auxiliary ONLY heat by temporally moving the HEAT PUMP
[Jumper 8] jumper to the HP-AUX ONLY position [Jumper 6]. This will keep
your room temperature within the swing setting of the target temperature.
•Be sure to restore it to PUMP when the pump is again operational as aux
heat is more expensive than pump heat."
 
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Old 03-20-11, 10:02 AM
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What about hooking up the X2 to W2 and the White to W ? Would that keep my Emergency heat hooked up? The Tstat has a Switch for Emergency heat inside the top cover. I didn't have an instruction book that came with it but did look on line but didn't see anything about the Emergency heat wire.
 
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Old 03-20-11, 12:39 PM
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Filtrete 3m-22 thermostat installation manual

see page 15 : 5 Wire HEAT PUMP with Auxiliary Heat. W is not used.
See page 18 also for descriptions on X2.

This thermostat is very limited in functionality.
 
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Old 03-20-11, 01:48 PM
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Ok thanks, You have helped a lot. I got it all installed and it is running like it is supposed too. I have never really needed the emergency heat but I will look into a Honeywell where I can use the emergency heat.
 
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Old 03-28-11, 05:09 PM
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Emergency Heat

While reading the Operation Guide, it stated that an Emergency Switch (labeled EMER HEAT) is located under the upper cover which allows you to turn on emergency heat if the HP is no longer functioning. I checked and the switch is in fact there.
 
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Old 03-29-11, 07:26 PM
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Odd place for it.

 
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Old 03-29-11, 07:42 PM
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Houston, can you delete some private messages, so I can PM you? I have a question.
 
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Old 03-29-11, 09:05 PM
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Okay, I have deleted some private messages.
 
 

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