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Installing Reznor UDAS heater having trouble finding vent pipe

purplezr2

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https://goo.io/KKQVMl

So. I bought a 100k heater and horizontal vent kit. The kit is a joke. It’s a a box with 2 4 inch inlets and one 6” outlet that is suppose to be concentric style venting(inlet in the outer diameter and venting through a center 4” pipe. I’m have trouble finding a 6/4” concentric pipe setup and vent cap. Any suggestions. Anyone done this themselves
 
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SundayFunday

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Oct 28, 2018
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Is this the heater you are installing?
Would these kits work? They might even be close to you.

djscompanies.com/reznor_udas_separated_combustion_unit_heaters2.html
 
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thammel

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I did this myself. You need to buy z-vent stainless steel piping. I bought mine from supplyhouse.com. It's not cheap To connect to the outlet of the UDAS do NOT use a special appliance adapter with a backdraft flap (part 2ZVB04). This backdraft flap messes with the UDAS controls and it won't work properly. I learned the hard way. Anyway, buy the stuff and be prepared to cut it either slowly with a hacksaw or a bandsaw or maybe a sawzall. It was a pain to install but is great now and will never give me or you any problems.

Tom
 

homeschool

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I installed the concentric vent kit on a Beacon Morris heater and I agree, it's pretty chincy. Wish I would have done some more reading first, could totally be made yourself. I guess I'm not understanding exactly what you're needing, but I'll take a shot.

The exhaust, on the outside of the wall (after the chincy box), is B vent or double wall pipe (or maybe something similar depending on local code). It is surrounded by 6" pipe (again, outside, after the chincy box) which makes up the intake. This preheats the intake air because it's coming in around the hot exhaust pipe, but they are separated.

So it's not 6/4 pipe, it's a straight run of double wall 4" out for the exhaust, with a 6" around it for the intake. My kit also came with a nice little "cap" if you will. I'll snap a couple pics in the morning, it's hard to describe in words. Hopefully that will help a little, but sorry if I was misunderstanding the question.

Oh, and BTW, if your kit came with gaskets, the thin inside is waste that needs to be trimmed. Screwed with it for two whole days before we figured that out, the instructions are horrible!

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purplezr2

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I installed the concentric vent kit on a Beacon Morris heater and I agree, it's pretty chincy. Wish I would have done some more reading first, could totally be made yourself. I guess I'm not understanding exactly what you're needing, but I'll take a shot.

The exhaust, on the outside of the wall (after the chincy box), is B vent or double wall pipe (or maybe something similar depending on local code). It is surrounded by 6" pipe (again, outside, after the chincy box) which makes up the intake. This preheats the intake air because it's coming in around the hot exhaust pipe, but they are separated.

So it's not 6/4 pipe, it's a straight run of double wall 4" out for the exhaust, with a 6" around it for the intake. My kit also came with a nice little "cap" if you will. I'll snap a couple pics in the morning, it's hard to describe in words. Hopefully that will help a little, but sorry if I was misunderstanding the question.

Oh, and BTW, if your kit came with gaskets, the thin inside is waste that needs to be trimmed. Screwed with it for two whole days before we figured that out, the instructions are horrible!

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This helps, how did you do the end so the intake and the exhaust end at different points.

I see they have similar pipe(exhaust in the center/intake on the out side, and they make a special end of it, that allows intake and exhaust) for water heaters/small heaters. Appears to be 3/5 inch piping.
 

homeschool

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This helps, how did you do the end so the intake and the exhaust end at different points.

I see they have similar pipe(exhaust in the center/intake on the out side, and they make a special end of it, that allows intake and exhaust) for water heaters/small heaters. Appears to be 3/5 inch piping.
This is installed on the 6" where it ends, the 4" keeps going, and there's mesh to keep critters out of the space between the pipes. Could totally be fabbed up yourself.

Don't remember the clearance measurements but searching "beacon Morris concentric vent installation instructions" should find you the document that spells out how many inches away from wall the 6" can terminate and how much farther the 4" has to run.7a42f00f73357cad64901f71a3a316f5.jpg

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homeschool

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Here's some pics. You'll notice I went horizontal then vertical, but that's not necessary.7ff4210e1ad971a7105968b109136421.jpg62f9080064f428f7024f40c2dbbc7797.jpg

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