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Thread: Diesel hot water systems

  1. #51
    Join Date
    Apr 2009
    Location
    Chicago
    Posts
    1,755
    Quote Originally Posted by egn View Post
    I use a thermostat in the separate heating loop, which is connected to the webasto loop by a heat exchanger (see drawing at previous page).

    So the webasto is free running just with it's internal thermostat. But AFAIK it has a control input which can be used to turn it on and off by a thermostat.

    This setup has the advantage that the warm water heater always gets the full heat of the webasto, even when there is no heat for space heating required.
    That's the setup I'm leaning towards, as it allows the (espar in my case) to better regulate the variable burner. If the unit is turned on and off by air temp it can't directly know the heat deficit.

    The water heater always in the loop stores BTU's to allow for a quick warm-up ("quick" being a relative term in Alaska)

  2. #52
    Join Date
    Feb 2017
    Location
    Las Vegas
    Posts
    2
    Does anyone know a vendor that makes a diesel tankless hot water heater. It should be similar to a propane or natural gas TANK-LESS water heater, except diesel generates the heat. I want it to be a "stand-alone" on demand heater that is NOT integrated with the main engine cooling system and not connected to any heat exchanger.

  3. #53
    Join Date
    Aug 2008
    Location
    Arlington, Virginia
    Posts
    2,218
    Talk to Jim Rixen: http://rixens.com
    --
    DiploStrat

    Web: http://diplostrat.org

    Certified Expo Poseur - Lives on Paved Road

  4. #54
    Join Date
    Feb 2009
    Posts
    1,025
    Rixsen is one, using espar parts.
    1997 Dodge Ram CTD, 5 Speed manual, BD exhaust brake, 5x12 injectors, 4k Gov. springs, Thuren coils, Fox shocks, Stable loads, 99HD steering, Carli end links, Method Race Wheels, 295/70/18 Cooper STTMaxx tires.

    2011 Northstar Adventurer

  5. #55
    Join Date
    Aug 2014
    Location
    United States
    Posts
    425
    Hmm. Do those have a wait time for hot water? Seems like diesel can't fire up fast enough to provide instant hot water.

    Just glanced at their site. Seems like it's no different that hot water systems that many have built using an espar and heat exchanger to heat water.

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