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M3RL verticle venting
Posted: Thu May 28, 2009 12:34 pm
by bhough
Is there a made up attic stop/addapter for the 3" exhaust & combustion pipes similiar to the CMF ceiling plate for a verticle install?
Is there any pdf documents of these parts & setups? I haven't seen any roof rain caps for the exhaust either. Thanks,
Brian
RE: M3RL verticle venting
Posted: Thu May 28, 2009 8:52 pm
by Robert
Hi Brian,
Call Mark at toll free 1-877-263-7860 and see what he has or may can get.
Thanks,
Robert
RE: M3RL verticle venting
Posted: Fri May 29, 2009 6:56 am
by bhough
My current setup has a stainless steel raincap which goes vertically down to the furnace with no bends. The new M3RL will be the same concept with a concentric vent kit in the attic & through the roof. The kit has a raincap that protects the intake air (5" outer) but nothing for the exhaust (3" inner). We get a lot of rain/etc. in NH.
Brian
RE: M3RL verticle venting
Posted: Sun May 31, 2009 12:24 am
by Robert
Hi Brian,
Here are all roof-jacks and roof-jack accessories :
http://www.mobilehomerepair.com/NordyneChimneys.html
Or call the toll free number given earlier.
Thanks,
Robert
RE: M3RL verticle venting
Posted: Tue Jun 02, 2009 7:34 pm
by Rod
On the concentric kit no need to worry about rainwater in the exhaust. It will work its way down and run out the condensate drain. That is how its designed. Other option is to run two separate 3" pipes. 1 for intake & 1 for exhaust and put elbows facing down & away from each other. The M3 installation manual will shown proper venting tecniques, spacing etc.
I have done it both ways and prefer the cencentric kit.
The package for the concentric kit will also conatin instructions.
When we run the concentric kits we use strapping screwed to a truss and use a plumbing to seal it from the weather.
Good luck.
Rod
Posted: Wed Jun 10, 2009 6:31 pm
by bhough
Thanks, that is the route I'll try. A small (3") pipe shouldn't take in too much rain & if it does I've seen small rain caps at Lowes. I have the roof boot. If it ever warms up I will start the removal.
Brian
Re: RE: M3RL verticle venting
Posted: Thu Jul 02, 2009 3:23 pm
by bhough
Rod wrote:On the concentric kit no need to worry about rainwater in the exhaust. It will work its way down and run out the condensate drain. That is how its designed. Other option is to run two separate 3" pipes. 1 for intake & 1 for exhaust and put elbows facing down & away from each other. The M3 installation manual will shown proper venting tecniques, spacing etc.
I have done it both ways and prefer the cencentric kit.
The package for the concentric kit will also conatin instructions.
When we run the concentric kits we use strapping screwed to a truss and use a plumbing to seal it from the weather.
Rod,
Now I am unsure about which size (diameter) for the M3RL-080. I thought 3", am I correct?
Good luck.
Rod