| Furnace ducting [message #314328] |
Thu, 09 March 2017 17:33  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
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Senior Member |
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Our furnace in our 77 Palm Beach has been replace by a PO with a Suburban 35K BTU unit. There are two 4" (I'm thinking) duct tubes going forward to outlets under the front sofa. And also two 4" ducts going to outlets under the cabinets to the rear. There is also a 2" tube heading behind the oven and on around the back to the bath module.
The furnace starts and fan runs, but not much air comes out the furnace grills. I can hear the over-temp switch kick in and shut down the burner while the fan continues. It will cycle the burner On/Off while running until it eventually warms up.
I've check the duct work for obstructions and found them completely open and clean. Obviously there is alot of resistance to air movement through the existing flexible duct work.
If I open the furnace access door and remove the front cover of the furnace, the volume of hot air will put you out of the coach before the thermostat can react. So the furnace is working great. We've just left the front cover off since and open the door when we need heat. However leaving the access door open is a nuisance and one of these days I'm going to trip on it and break it with my clumsy feet. Also we now have grand-kids so they may join us in the not too distance future.
So I was thinking about getting rid of the hose ducts and installing a custom metal duct from the front to the back along the floor and inside the cabinets and the sofa. I'd leave the front cover off the furnace and make a duct from there down into my duct work and block off the tube openings. I'm thinking this would have less resistance to air movement and keep little hands safe from the furnace.
Has anyone done this? Experiences? recommendations?
Thanks all
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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