Originally Posted by wanderso
We are in the northwest and are enjoying our first "real " camping of the 2012 season. I've always been in the habit of turning off the propane after the trip for safety reasons but this means needing to bleed the system (run a stove burner) each time. Also, the fridge and dsi water heater require several relight attempts. Furnace does not seem to have the problem.
This has been true on my last 2 rigs.
So - do others follow is same safety habit or do you leave the propane valve open for the season? In my case, we camp at least one weekend per month from March - October and do a week or two of vacation.
I would check for a very small leak.
Propane appliances (furnace, refrigerator and water heaters) normally operate on a regulate propane supply pressure from the tank of 11 inches of water column with all appliances operating.
When all of the appliances are shut OFF and the tank is left ON. The propane tank regulator will maintain the system at 11 inches of pressure even it there are any leaks in the system.
When all of the appliance are shut Off and the tank is also shut OFF. The system shoiuld maintain the 11 inches of pressure. It could drop to equal atmospheric pressure.
Air pressure should not enter the system that would require extensive bleeding.
A vacuum has to be created in the system to suck air into the system. A vacuum could be created by ambient air temperature variations but this would take some time to develop.
I would do an extensive pressure test using high quality propane rated soap bubbles. Keeping in mind that propane is heavier than air and it will seak a lower point just like water.
One place to check are standing pilots on some stove cook tops.
We have had a truck camper, 2 class C motorhomes and 2 class A motorhome. The only time that the propane tank is shut off is in storage.
The tank is ALWAYS shut OFF during filling.
Dwight LTC ARNG Ret
Steam Fitter by trade RET