Furnace Venting

[Brian R. Paull]

This is the first time I have seen this. Newer Trane furnace vents up through the roof and in the attic area, they merge together to a single vent. Is this a proper installation method?

[sparksnmore]

I would need to see the manufacture's installation instructions myself.
What is the second pipe ?

[Brian R. Paull]

Sorry, I should have noted that. One is the intake and the other is the exhaust. The furnace is less than 5 years old, but the instructions were not available.

[sparksnmore]

I've never seen or heard of the intake and exhaust being connected together, but then I've never installed Trane equipment.
I don't see how that could possibly work.

[cbuell]

This is a very common installation. They don't actually vent together. One pipe just runs inside the other so that you only have to put one hole through the roof.

[Larry D. Kage]

Originally Posted by cbuell

This is a very common installation. They don't actually vent together. One pipe just runs inside the other so that you only have to put one hole through the roof.

Exactly...quite common installation.

[sparksnmore]

Ah ha, that makes sense now then.
It must be a special wye fitting.

[Michael Larson]

Picture is upside down.

Vent Termination Kit


Concentric Vent Termination Kit, 3 Inches
Grainger Item # 6MC43 Price (ea.) $67.50
Brand DAYTON Mfr. Model # 6MC43 Ship Qty. 1 Sell Qty. (Will-Call) 1 Ship Weight (lbs.) 5.0 Usually Ships** Today Catalog Page No. 3219

Enlarge Image

Installation sheet

[Brian R. Paull]

Thanks everyone...It was a good day, I learned something.