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Barry J

Massachusetts

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Posted: 06/24/19 12:26pm Link  |  Quote  |  Print  |  Notify Moderator

We had taken out our sleeper couch, which is where the furnace is situated.
Now I want to “box-in” the furnace.
Is there any ventilation I need or can I just box it in.
I plan on using screws so that I can get to it if needed.
Thanks
Barry

Chris Bryant

Arden, North Carolina

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Posted: 06/24/19 01:28pm Link  |  Quote  |  Print  |  Notify Moderator

It needs substantial return air. I suggest you google for the installation manual for your model for the requirements.


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mobeewan

Hampton, Va

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Posted: 06/24/19 04:03pm Link  |  Quote  |  Print  |  Notify Moderator

Typically a furnace with ducted outlets in an RV has a metal louvered plate mounted on the cabinet facing somewhere near the furnace. This allows the free flow of air back to the furnace intake. There is no direct air duct back to the furnace like in a house. There is no filter to change either. Being under the couch like yours there is probably enough air flow getting back to the furnace inlet. If you box it in you will need to leave an opening in the box and add a grill to the opening. The grill and opening will need to be sized to ensure enough air is getting to the furnace intake.

Ride S40T

OK

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Posted: 06/24/19 07:03pm Link  |  Quote  |  Print  |  Notify Moderator

There's no ventilation for ours. There's a futon over the ducted system with a wood base. Believe all the air/gas fun stuff happens outside the RV...in that vent.

We're thinking of doing the same, we'll measure the pieces taken out (with no vents) and replace with the same dimensions.

In the end, contact your manufacturer and they'll likely guide you.


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prichardson

Lafayette, La

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Posted: 06/25/19 07:18am Link  |  Quote  |  Print  |  Notify Moderator

The room air that is to be heated must get to the furnace. As mobeewan said furnaces mounted under couches get their return air from spaces that are left open under and around the couch. If you box the furnace area the size of the opening for return air will be depend on the furnace capacity.

PNW_Steve

Pacific Northwet & cold

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Posted: 06/25/19 11:05am Link  |  Quote  |  Print  |  Notify Moderator

The air inlet should have the same, or larger cross sectional area as the outlet duct.


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Barry J

Massachusetts

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Posted: 06/25/19 02:47pm Link  |  Quote  |  Print  |  Notify Moderator

I have an Atwood Hydro Flame it is in a 2003 Four Winds 29F. Dutchman.
It has floor vents.

Barry

myredracer

Langley B.C.

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Posted: 06/25/19 04:36pm Link  |  Quote  |  Print  |  Notify Moderator

MUST have a return air inlet of a min. size spec'd by the furnace manufacturer. Also must have min. clearances to sides and top, also as per specs.


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drsteve

Michigan

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Posted: 06/25/19 06:23pm Link  |  Quote  |  Print  |  Notify Moderator

Combustion air is drawn in from outside, and exhaust gases go outside. But the furnace requires return air from inside the living space.


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opnspaces

San Diego Ca

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Posted: 06/25/19 06:51pm Link  |  Quote  |  Print  |  Notify Moderator

I would get the model number and go to BryantRV and download the manual. It should tell you the minimum spec for the return air.
Bryant RV


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