Gravity furnace problem - Page 2 - Fiberglass RV


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Old 07-05-2014, 08:05 AM   #15
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Name: THOMAS
Trailer: 1972 COMPACT JR
Colorado
Posts: 46
Well, I ordered a new (been sitting on a shelf for approx. 40 years in original packing) thermostat control to replace the one on my gas valve. Will install it tomorrow or so and let you know what happens. Keeping my fingers crossed. Tom Justice
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Old 07-08-2014, 07:07 PM   #16
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Name: THOMAS
Trailer: 1972 COMPACT JR
Colorado
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New thermostat is now installed onto the main gas valve body and the furnace works just fine ! ! However, I have a concern regarding the fresh air intake and the exhaust (burned gas). The intake and the exhaust, on the street side of the unit, are immediately next to each other. This indicates to me that the intake will be taking in fresh air AND exhaust fumes. This appears to be the original furnace and intake/chimney system.
Doesn't make sense to me, from a safety standpoint. Any other CJr owners out there who can verify that this is the factory-built system ??
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Old 07-08-2014, 07:21 PM   #17
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Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
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I don't own a Compact Jr. but I have several Trilliums with gravity furnaces. They use a concentric vent. Exhaust in the center, and fresh air intake surrounds that. I assume that exhaust does end up in the fresh air intake. But since, after combustion, it all comes back out the exhaust, I don't see a problem. None of it should come in the trailer.
As long as there is sufficient oxygen for combustion everything should be fine.
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Old 07-08-2014, 07:38 PM   #18
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Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
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ThT is the way the fresh and exhaust air is. One tube is inside a bigger one. As long as the exhaust goes outside you R Golden. Don't reengineer the thing. I had one years and it was the same way. BE Absolutely Sure You Have A Carbon Monoxide Detector inside the camper and in good working order.
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Old 07-10-2014, 08:55 AM   #19
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Name: Alan
Trailer: 1977 Scamp 13'
Minnesota
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Quote:
Originally Posted by THOMASJU View Post
New thermostat is now installed onto the main gas valve body and the furnace works just fine ! !
I could use a replacement on my furnace. Where did you find one?
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Old 07-10-2014, 06:30 PM   #20
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Name: THOMAS
Trailer: 1972 COMPACT JR
Colorado
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ALAN, check here on E-bay..
T5286A1007 Honeywell Adatrol Thermostat | eBay
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Old 07-10-2014, 06:36 PM   #21
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Name: THOMAS
Trailer: 1972 COMPACT JR
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Thanx, David and Darwin, for confirming what I thought to be true. I DO HAVE a CO detector installed down low next to the furnace. Tom J.
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Old 07-11-2014, 07:45 AM   #22
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Name: Alan
Trailer: 1977 Scamp 13'
Minnesota
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Thanks for the link to the temperature regulator.

Sent from my SCH-I545 using Fiberglass RV mobile app
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Old 10-21-2015, 09:15 PM   #23
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Name: Mike
Trailer: Bigfoot
Alberta
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i had the same problem with mine .what i found was mice made a home in the air in take side. once i puled all the x'/t junk out it works fine .happy trails Mike
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