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09-19-2018, 10:04 AM
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#21
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Senior Member
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 5,156
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Quote:
Originally Posted by David Tilston
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I am curious about your Suburban stove. Is it plumbed to the high pressure propane? Or, is it down stream of the trailers regulator?....
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The popular Suburban SDN2 / SDN3. This Parts Diagram shows the regulator as item #6. The stove is still plumbed to the usual 11 inch water column system, downstream of the two-stage regulator. This was something I was not aware of until I started to learn how a manometer is used to check the propane system. When checking the system, it cannot be connected to the burner assembly because of the stove's built-in regulator. Instead a manometer to check the system pressure can be connected to the flair connection for the stove (item # 7 on the diagram).
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09-21-2018, 02:39 PM
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#22
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Senior Member
Name: Marjie
Trailer: Trillium 4500
New York
Posts: 267
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Problem solved! So, redbarron55 stated that the valve on the tank has to be connected to something to let gas out. I hooked up the tanks again, really tight this time, and they work! I think maybe because it was a new hose (squirrels chewed through the old one, again) the threads were a little tight, or something, on the connecting end. Sorry, don’t know the correct terminology, but I fixed it!
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09-21-2018, 04:37 PM
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#23
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Senior Member
Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
Posts: 6,926
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Quote:
Originally Posted by gordon2
The popular Suburban SDN2 / SDN3. This Parts Diagram shows the regulator as item #6. The stove is still plumbed to the usual 11 inch water column system, downstream of the two-stage regulator. This was something I was not aware of until I started to learn how a manometer is used to check the propane system. When checking the system, it cannot be connected to the burner assembly because of the stove's built-in regulator. Instead a manometer to check the system pressure can be connected to the flair connection for the stove (item # 7 on the diagram).
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The stove regulator is for 10" of H2O, one inch less then the main regulator. I am guessing it is for back up, in case the main one fails catastrophically.
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09-22-2018, 11:53 AM
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#24
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Senior Member
Name: T
Trailer: Designing and building
Florida
Posts: 131
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Could be the Type 1 fitting....
Just to add another failure mode to check...
Our system is tank>connector>hose>regulator>all that other stuff.
I just replaced our regulator with a brand new one, as we weren't getting gas into the system from a freshly filled tank that is known to be good.
Still didn't work. I know there is an excess flow preventer in newer Type 1/Acme connectors, designed to prevent large volumes of propane from escaping if a line fails in the system, so I disconnected the line from the regulator, opened the tank valve very slowly, and got....nothing. Cleaned it out, tried it again, got a little gas (like you'd get if the system wasn't up all the way) then nothing. More nothing later.
Went to the Happy RV Parts Store, got a POL (not Acme) to 1/4NPT hose, and all is well. The POL connector has an excess flow device in it, so we'll see how long it lasts.
Hope this helps someone out!
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09-22-2018, 01:59 PM
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#25
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Junior Member
Name: Sherry
Trailer: Currently shopping
Louisiana
Posts: 1
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Regulator problem
Last year I replaced the two burner stove and water heater in my 16' Casita. At the same time I replaced the regulator and the hose that went from the propane tank to the regulator. Everything work fine at home. On the first night of a five week trip, I had a nice hot shower. For the the next few days, I could barely get the stove to light & it would go to an extremely small flame. I tried a different propane tank from a very friendly hardware store. Still nothing. Finally found a RV repair shop and had them test everything. Pressure was fine. Nice hot shower that night. Then nothing again. I finally gave up, bought electric kettle, one burner portable stove and enjoyed my trip. Got home & went back to local RV shop. Watched as the system was tested. Initially the pressure was perfect, but over a few minutes is fell to nothing. Both the new regulator and the hose were bad. Replaced both and no more problems.
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09-22-2018, 04:42 PM
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#26
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Senior Member
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 5,156
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Quote:
Originally Posted by spatrick
...Finally found a RV repair shop and had them test everything. Pressure was fine. Nice hot shower that night. Then nothing again....
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Sounds like the first shop did not do a compete check. Hope you didnt pay them.
I frequently recommend this web site for owners to get an idea of what to expect from a complete propane system check. Its good to know what they should be doing.
The RV Doctor: What the Pro's Do - Propane System
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10-09-2018, 11:58 AM
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#27
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Member
Name: Marcia
Trailer: Bigfoot
Colorado
Posts: 50
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Great article on RV propane!
Quote:
Originally Posted by gordon2
Sounds like the first shop did not do a compete check. Hope you didnt pay them.
I frequently recommend this web site for owners to get an idea of what to expect from a complete propane system check. Its good to know what they should be doing.
The RV Doctor: What the Pro's Do - Propane System
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Thanks for great link, I am going through my 14 year old bigfoot and cleaning up things, nice to find a good resource. I have a few specific questions but will start a new RV propane thread with my issues.
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