Furnace replacement for a 1977 Trillium 4500 - Page 2 - Fiberglass RV
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Old 09-09-2016, 10:04 AM   #21
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David Tilston's Avatar
Name: Dave W
Trailer: Trillium 4500 - 1976, 1978 (2), 1300 - 1977, 1973, and a 1972
Posts: 6,608
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
drdog's Avatar
Name: Jim
Trailer: Boler 13'
Posts: 41
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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