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Old 07-15-2009, 02:38 PM   #1
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Line size for Trane


How do I find out piping size for Trane XR series heat pumps 410A? I was wondering if there is a piping size and length chart available. I have a 3 ton system with a 3/4" suction line. The builder ran 7/8" to the outside and 3/4" to the air handler. I'm not sure where the reduction in pipe size happens. The unit is in a second story attic, so it would be quite the eye sore to run line set covers down the wall.

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Old 07-15-2009, 05:20 PM   #2
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Line size for Trane


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Originally Posted by pomelo View Post
How do I find out piping size for Trane XR series heat pumps 410A? I was wondering if there is a piping size and length chart available. I have a 3 ton system with a 3/4" suction line. The builder ran 7/8" to the outside and 3/4" to the air handler. I'm not sure where the reduction in pipe size happens. The unit is in a second story attic, so it would be quite the eye sore to run line set covers down the wall.
Most 3T Trane R410A systems spec'd 3/4 suction, 3/8 liquid assuming a run not to exceed 60'.

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