Original message
| BKraengel
 |  "Trane 4TEE3D Wiring"
, posted Mon 11 Aug 11:48  
Re: Trane 3H2C w/Elec Aux 4TEE3D Air Handler
All,
1. Is W2 the emergency heat relay? If aux heaters are staged (ODT between W1 & W2), does emergency heat kick in all stages simultaneously or are the heaters still staged?
2. What is YLO, is it first stage compressor (Y or Y1) or second stage compressor (Y2)?
3. What does the optional humidistat (between R & BK) do?
Bill Kraengel
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Replies:
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| Houston204
| "Re(1):Trane 4TEE3D Wiring" , posted Tue 12 Aug 08:16
They will not kick on simultaneously.
Ylo is a reduced fan speed terminal used only with the 19 seer 2 compressor systems. Y1 connects there with that system.
The BK jumper allows proper airflow for a humidifier to be used, although I cannot easily review this on the ipaq I'm using (compared to my dual monitor PC).
"Tip of the Day" Remember to remove power first.
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| | BKraengel
| "Re(2):Trane 4TEE3D Wiring" , posted Mon 13 Oct 13:52
Thanks Houston204. Where can I read up on the subject? I have an XL19i & 4TEE (3-ton) but there were no special hook-up instructions with it.
Bill Kraengel
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