| [GMCnet] In search of a coach furnace that is good on power [message #341310] |
Mon, 25 February 2019 12:55 |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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These diesel fired furnaces are common in trucks, busses and newer RVs. Most are configured as diesel boilers which heat water And pump it to heat exchangers throughout the coach. While they are produced by different manufacturers, most use a burner and boiler unit made by Webasto. On trucks it is common to see them as air heaters to keep the sleeper warm at night. Any large RV show will feature several manufacturers and two to four people who claim to know how to diagnose issues and perform annual maintenance. Some do and some don’t.
It looks like these Chinese units are copies of the Webasto air heater designs. Like the cheap generators they likely will blow a lot of hot air but who knows for how long.
Were I to do another GMC I would stick with the Suburban units and reengineer the air ducting much like others have suggested. The major design flaw appears to me to be the right angle bend the air takes when exiting the heat exchanger. I think some careful work making that a less radical transition would pay great dividends. Do as one poster said and remove the front cover to discover just how much heat these things actually put out. Plenty for our application.
Jerry Work
Kerby, OR
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Jerry & Sharon Work
78 Royale
Kerby, OR
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