| Author | Message | ||
| Grant Thiessen (Busshawg)
Registered Member Username: Busshawg Post Number: 75 Registered: 10-2007 Posted From: 206.45.93.160  Rating: N/A |
And now for my next dumb question. Can a person use a LP hot tank and heat it with a webasto and if so I take it some type heat exchanger would be required ?? | ||
| William Garamella (Nh_wanderer)
Registered Member Username: Nh_wanderer Post Number: 7 Registered: 11-2008 Posted From: 24.62.162.30  Rating: N/A |
I suppose so, but I have not heard of a propane water heater that has a circulating coolant exchanger as well. Mine does have two fuel sources for heating hot water. In addition to the heat exchanger that heats the water with the engine heat or the Webasto, there is an electric element too. So, when I'm plugged into shore power or running the generator, I can heat water electrically but, no LP burner for the hot water. NH Bill | ||
| Ednj (Ednj)
Registered Member Username: Ednj Post Number: 216 Registered: 3-2003 Posted From: 67.85.237.82  Rating: N/A |
I just us a flat plate heat exchanger off the proheat for hot water, "No" tank. The flat plate takes up no room at all. As long as the Proheat is hot the water is hot. | ||
| Grant Thiessen (Busshawg)
Registered Member Username: Busshawg Post Number: 77 Registered: 10-2007 Posted From: 206.45.93.160 Rating: N/A |
Thanks guys, would have never thought of that Ednj. Thanks | ||
| R.C.Bishop (Chuckllb)
Registered Member Username: Chuckllb Post Number: 393 Registered: 7-2006 Posted From: 75.210.66.68 Rating: |
Check the Marine Suppliers...Defender...Hamilton and West Marine, et al. The important thing is that the HWH has a coil built in (or later fabricated) to accommodate the Webasto. Mine does, but it is electric. We have propane on board but use it only for cook top/oven. We luv the Webasto....but they use diesel so the trade off is there. The real advantage is engine warming and if run thru the coach, or other installed heat exchangers, interior heat. Hot water is free during a trip using a WH with heat exchanger built in...  FWIW RCB | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 312 Registered: 8-2004 Posted From: 72.12.39.78  Rating: |
Hey, Grant. Have a look at Atwood GCH10A-4E - it's a 10 gallon water heater with propane, electric and heat exchanger coil. I don't have it installed yet but with the ProHeat that I bought from Nick, I'll be able to arrive with hot water (off the engine), preheat the engine, run hotwater interior heat, and heat domestic water off the power cord or propane (propane if "drycamped" and don't want to run the generator). The valving is going to be a little complicated though. | ||
| George M. Todd (George_mc6)
Registered Member Username: George_mc6 Post Number: 653 Registered: 8-2006 Posted From: 207.231.75.253 Rating: N/A |
Grant, Look at Bruce and Chuck's posts above! They've got my vote, because that is the answer. You arrive with free heat, and there's very few free lunches. A little thought on the piping, and you have QUICK block heat, tie the gen cooling lines into the main eng radiator, lotsa heat, lotsa hot water, etc. G | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 313 Registered: 8-2004 Posted From: 72.12.39.78 Rating: N/A |
George said "You arrive with free heat, and there's very few free lunches." Yeah, I knew that I wanted a heat exchanger (I'd seen them used on a non-bus/RV project at work). I was talking to Gary Throneberry (on this bbs - he and I worked in the same office something like 35 years ago) and he told me about his early-70's GM motorhome. As he described it to me, that RV has a "heat exchanger" that's two copper pipes placed next to each other with about 10-12" of contact area. Sounds small and simple but 20 minutes of driving and he has hot water! Gary also bought a ProHeat from Nick and the systems that we discussed and are planning to use are similar. | ||
| Grant Thiessen (Busshawg)
Registered Member Username: Busshawg Post Number: 78 Registered: 10-2007 Posted From: 206.45.93.160 Rating: N/A |
Thanks again guys, I think I have my system , or should I say proposed system down pat, thanks to you guys and a lot of help from another bus nut on Vancouver Island. He has explained to me that I can use my pressure A/C line for a bypass allowing me to operated eveything or only one thing at a time using either the bus, or my recently purchase webasto for heat. Now if it would only warm up so I could get to work. |
