LP gas Diagram, help needed.

DrewE wrote:
I can't really help you all that much. I think everything other than the grill and the heater will have either a NPT connection (the tank) or a flare fitting (the cooktop, I'm pretty sure the fridge, and probably the water heater, though it's not shown). In either case, your installer should have the appropriate connecting fittings readily available; they are not at all unique to RVs. I do want to stress, however, that I know rather little at all about the details of gas pipe fitting.

The grill has some sort of a quick-conenct fitting. I kind of hope it came with a hose that has a mating fitting, or at least the fitting itself.

The heater is set up to use 1 pound disposable cans, which means that it has a regulator built into it. You can't hook it up to the regulated propane system in your RV; having its regulator fed by low pressure gas won't work. The options there would be bypassing the regulator in the heater (if that can be done safely—there's a good chance that the regulator and control valve are a single unit), running a line for it from the high pressure output of the tank, using disposable cylinders, or getting a different heat setup. I'd probably suggest the last one, but it's undoubtedly the most expensive and it's always easier to spend someone else's hard earned cash than my own. Something like the smallest Atwood Everest furnace would be quite effective (and arguably safer as the combustion gasses are vented outside).

One other heat possibility is setting up a hydronic (hot water) heat system using your existing water heater and a pump and radiators or heat exchangers. The plumbing side of such a system should of course be appropriate for potable water, and would generally have to be designed to be able to be drained or blown out for winterization if needed. Certainly it's not the simplest option to put together, but it could be workable.

Hi DrewE

You're right, I will let the installer use his standard fittings for the fridge/cooktop/water heater they all seem to have the same connection.

As for the heater... I got the wrong model (little buddy), the one I got only has high pressure :S
this is the model they use in RVs (big buddy) but it's way to big for my little camper, fast forward to 1:56 in this video :
https://www.youtube.com/watch?v=mRxUB9tktOs

I prefer having a portable catalytic heater, no need to vent anything outside (with the curved outside panels of my Ford E250 van...) and I like the idea of using it somewhere else (house/tent/garage/etc...) kind of like my portable generator.

This model seems interesting :
http://www.amazon.com/Camco-57331-Olympian-Wave-3-Catalytic/dp/B000BUV1RK/ref=sr_1_55?ie=UTF8&qid=1463451066&sr=8-55&keywords=catalytic+heater