Furnace replacement for a 1977 Trillium 4500 - Page 2 - Fiberglass RV


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Old 10-22-2013, 06:08 AM   #15
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Originally Posted by lamimartin View Post
I may not be a specialist, I'm reasonnably confident we are indeed talking of the Duotherm Gravity Direct Wall Furnace 65810.
Not to be argumentative, but I am reasonably sure we are talking about a 65512-002. The 65810-002 were installed in Trillium 1300 trailers. They are physically smaller. I just went to my shed to check. I have one of each.
Trillium Furnaces - 9-3608 Blower
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Old 10-22-2013, 08:48 AM   #16
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Thanks Martin, As I mentioned my concern with this thread was simply that some pretty big and dangerous assumptions where being made in regards to what brand/model of furnace the OP has and its condition.

When I purchased my trailer it was only 16 years old and I know the the furnace and hot water tank that were not original to it, along with a number of other items. Now thats its 21 years old it has had additional items replaced. Would not assume that any trailer of 30 years of age to have its original components or that they are in a safe usable condition without actually seeing them.
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Old 10-23-2013, 05:24 PM   #17
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Originally Posted by David Tilston View Post
Not to be argumentative, but I am reasonably sure we are talking about a 65512-002. The 65810-002 were installed in Trillium 1300 trailers. They are physically smaller. I just went to my shed to check. I have one of each.
Trillium Furnaces - 9-3608 Blower
You are right, I just reviewed my notes on a previous post on tha matter I made in April 2011 "Reinstalling a Duotherm 65512 on a Trillium 4500".
Thanks David.
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Old 10-24-2013, 12:13 AM   #18
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Thank you Martin. We do not know where to begin to find out what is not working with our furnace.
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Old 10-24-2013, 04:38 AM   #19
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Originally Posted by billkateposs View Post
Thank you Martin. We do not know where to begin to find out what is not working with our furnace.
After you have checked structural integrity of the combustion chamber (corrosion and gaskets) and for gas flow and leaks, there are two things that may prevent your furnace to ignite:

1- There is a small metal rod sticking just under the pilot that is meant to detect if the pilot is lit. That rod must be heated in order to leave the gas flow to the burner. If the pilot is not burning, you don't want the gas to accumulate and cause a potential explosion. If you hold on the red button to allow the gas to flow, you are bypassing this safety to lit the pilot when it is cold. If that pilot safety is misplaced or defective, your furnace pilot will not remain lit after you release the pressure on the red button. Such safety device is standard on just any propane fridge or furnace. Finding a compatible spare part is likely going to be challenging.

2- Once you have the pilot lit, there is a temperature sensor that controls the flow of gas onto the main burner. If that sensor is defective, the pilot will lit, but the main burner will not go on even if you turn the red button to the highest temperature setting.

By the way, if you have disconnected gas or not used the furnace for a long time, you may have to wait a couple of minutes for the gas to reach the pilot.

Good luck.
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Old 09-07-2016, 02:58 PM   #20
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Gravity vs. forced air

My old WagonMaster gravity furnace gave up a few weeks ago and I put an Atwood 18,000 btu furnace in. Great addition but sure draws the 12 volt solar system down so having to add more power there. It gets rather cold up here so I really wanted a forced air unit. The WagonMaster cracked the propane line on a dirt road and I figured it would be as much to try to repair it than simply replace it.

I am looking to find out if I can put some sort of control on it to slow the fan speed....and the noise. Although after the first night I don't even notice it.
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Old 09-09-2016, 10:04 AM   #21
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Slowing the fan may not be a good idea. The sail switch will shut off the furnace if the air flow falls too low. Heat build up could be dangerous. Search this sight for pulse width modulation, (PWM) for a cheep way to control the speed of a fan.

It is probably best to replace your Wagon Master furnace. They have a bad rep for leaking the products of combustion.
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Old 09-09-2016, 10:49 PM   #22
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Slowing the fan

Thanks for the info. I'm getting rather used to the noise and barely notice it now. Even the dog doesn't care any more.....
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