I'm copying my post from the Expo forum to save me some time...
When starting from scratch there's a few things that needs to be considered before going crazy with building the interior. Plumbing and electrical are the big ones for me.
I got some great ideas from fellow Expo and SMB members that set me in the right direction or got me great deals on some of the parts like my Espar, mixing valve...
My task this weekend was to plan the plumbing, get every missing parts and find a place to mount them.
I separated the plumbing in two, coolant & water.
First picture is coolant.
Tapping at the rear of the engine, through the Espar and into a manifold allowing heating of 3 systems in parallel, (rear heat, hot water, Wvo and engine warming).
I've added shut off valves before and after the Espar so the unit can be removed for servicing.
I also added another valve to the rear heat loop. No point heating the cabin if all you want is hot water in the summer...
At the end of each load I've added a bleeder valve (helps filling the coolant and removing air in lines), circled in red.
I still need to figure a secondary expansion tank somewhere in there, probably 1-2 gallons.
Gotta love those stainless and brass fittings!
Next the water system.
Hopefully the picture can explain better than I can but these are some highlights.
Right after the 22 gallons tank there a on/off valve followed by a garden hose hookup so I can either
- open valve and fill tank from city hookup
- close valve and pull water from another water source (city hookup, lake...)
Sediment filter, Shurflo pump with flex hoses to help with pump noise along with extension tank.
Cold water splits to heat exchanger side with a small bleeder valve at the top and a drain valve at the bottom (for winterizing) then into a mixing valve.
The "IV" hand drawn in black is a Seagull IV filtration system. I'm plumbing a bypass loop so I get to use it only as needed (drinking water). If it wasn't loop it would wear the filter faster and restrict the flow in the long run.
At the end there's 3 outlets (A,B,C) for sink, shower and outside tap/shower.
I started building the water cabinet by the rear driver side door (where the electrical used to be) and I'm hopeful all this mess will fit in there. It will be tight!
Next couple days I'll tackle the WVO conversion and some more plumbing, stay tuned
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