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They are the same as erberspacher ones, and can be used as "on demand" heaters. I think they can be controlled thermostatically, but it all depends on the model you get, and if there's a stat to suit it.
You can't run de-ionised water through a Webasto heater which is fitted to a vehicle's radiator because the radiator is filled with a percentage of antifreeze/summer coolant because otherwise the engine block would freeze and crack in very cold temperatures.You can run the water from the webasto unit through the fitted coil of an indirect calorifier tank to heat the surrounding water stored in the calorifier tank and then circulate that around your baffled WFP tank by means of a 12 volt pump.Ionics use a webasto unit but they pass deionised water through a stainless steel heat exchanger and it is stored in a holding tank which is a completely different setup to fitting a webasto heater into a vehicle (which is used to pre-warm an engine and cab prior to starting the engine).
Quote from: Wayne Thomas on December 11, 2007, 06:42:24 pmYou can't run de-ionised water through a Webasto heater which is fitted to a vehicle's radiator because the radiator is filled with a percentage of antifreeze/summer coolant because otherwise the engine block would freeze and crack in very cold temperatures.You can run the water from the webasto unit through the fitted coil of an indirect calorifier tank to heat the surrounding water stored in the calorifier tank and then circulate that around your baffled WFP tank by means of a 12 volt pump.Ionics use a webasto unit but they pass deionised water through a stainless steel heat exchanger and it is stored in a holding tank which is a completely different setup to fitting a webasto heater into a vehicle (which is used to pre-warm an engine and cab prior to starting the engine).If you're going this route,.. a heat exchanger can be fitted to the engines cooling system that removes the excess heat from the engine and transfer's it to your tank,... it doesn't get as hot as a dedicated heater would get it,.. but it would be more than enough to stop any worries about freezing. I'd use this method in conjunction with an "on demand" heater though.I'm currently waiting on a new propane powered heater being developed in the US which can be vehicle mounted,.. the manuf is working on getting it CE mark approved for sale in Europe at the moment. His current models retail for less that £100 (plus postage) but the new one will have a higher heat output, and improved venting system, so probably a bit more pricey.
I know your interests go a bit wider than most of us shawn, but I've got one of your china gizmos and it works great.
Who is the manufacturer?
Quote from: U.S. wfp USER on December 11, 2007, 08:01:16 pmWho is the manufacturer?Don't know who manuf's them,.. I'm guessing they arrive from China just like everything else,... but this is the guy who's selling them in the US:John Hurlbertjhurlbert@ges-na.com+1 843.875.4255 Office+1 843.564.6104 US SkypeHe has the L5 model on ebay, Its a propane powered camping/RV shower, but it can't be vented and doesn't have a CE mark.