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Old 12-01-2015, 10:55 AM   #1
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Open Road 5th wheel Heat

Furnace seems to work fine but no real heat to the vents, some residual heat only. I climbed underneath and cut a hole in the rubber shielding material but when I looked inside I could not find any vent hoses, just a big void area.

It;s a 2004 39' open road 5th wheel

How do you access the heat distribution box and
heater hoses.

Thanks in advanced but I am afraid of the answers
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Old 12-01-2015, 11:24 AM   #2
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Hi...What year and model of Open Road do you have? They are usually ducted between the floor joists to the registers. I access the rear of the furnace through the cold air return and that is where the heat is directed to the ducting. If yours is the same then possibly the seal between the furnace and the ducting is leaking.....or something is stuffed down the floor registers.
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Old 12-01-2015, 11:30 AM   #3
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It;s a 2004 39' open road 5th wheel. I took the return cover off in the kitchen but the unit in there is all sealed up and didn't look like it gave you access to anything
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Old 12-01-2015, 11:48 AM   #4
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Oops..didn't notice you had the year and length in your orig post.If the same as mine, the kinda curved piece of sheet metal between the furnace and floor is what directs the heat to the ducting. That should be almost hot to touch with the furnace running.
On ours the factory had cut holes in the ducting in an attempt to provide heated tanks.
This cut the output at the floor registers quite a bit. I dropped the belly cover and covered the holes and this improved the flow.
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Old 12-01-2015, 12:02 PM   #5
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Attached pic of atwood furnace. Hope this sends.
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Old 12-01-2015, 10:09 PM   #6
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Quote:
Originally Posted by Buddygold View Post
Furnace seems to work fine but no real heat to the vents, some residual heat only. I climbed underneath and cut a hole in the rubber shielding material but when I looked inside I could not find any vent hoses, just a big void area.

It;s a 2004 39' open road 5th wheel

How do you access the heat distribution box and
heater hoses.

Thanks in advanced but I am afraid of the answers
Are you getting good airflow coming out and it's just not warm, or no air at all? I found one of my vents to the bedroom where the duct feeding it was sliced wide open in three places. I was getting no air at all.
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Old 12-02-2015, 07:14 AM   #7
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I'm not getting air flow, The only ducts I can find access to are in the front storage compartments which feed the living room.

I saw the diagram shown above as it is shown with my furnace manual but I cant find where to access it. Is it behind the white plastic panel from the outside. I can't figure out how those clips work to get that panel off. Do you squeeze those black clips in???
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Old 12-02-2015, 12:10 PM   #8
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This is from Gary Brinck RVForum.net

Poor Air Flow from Duct Outlets
This is often caused by crimped ducts or excessive length ducts that have extra loops that slow down air flow.
Check as much of the ducting as you can reach and straighten loops (removing excess if possible) and eliminate kinks and crimps as much as possible.
Also check the outlets themselves many are adjustable and may be partially closed.
Take the outlet off and make sure it actually opens broken ones are not uncommon.
Gary Brinck RVForum.net



Possibly blower fan is loose on the motor shaft

If the fan is working then it would appear to be closed registers or restricted ducts.

From my limited experience, access to the furnace output to ducting is behind the cold air return.

Is this a new to you RV? If not was the furnace working properly previously? What is the model number of the furnace?

(Is it behind the white plastic panel from the outside. I can't figure out how those clips work to get that panel off. Do you squeeze those black clips in??? &nbsp I believe the white plastic panel is the vent cover for the refrigerator.
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Old 12-03-2015, 09:42 AM   #9
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I took off the return vent cover off under the refrigerator. I have the unit shown as #6 in the picture above but not the #4 distribution box. I took the cover off the end to see that it was just a deflector cover that sent the heat down into a duct that runs below the floor. There does not seem to be anyway to access the duct from underneath so I just left the cover off and blocked the duct opening and let the heat blow out into the kitchen. Not sure if this will heat the whole unit but I[m getting more heat then before. I guess I will try to snake the vents next to see if I can find any blockage
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Old 12-03-2015, 12:15 PM   #10
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Maybe find someones long lost floppy slipper in the ducts.
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