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  1. #1
    Join Date
    Nov 2004
    Location
    Northamptonshire
    Posts
    1,894

    Default Diesel heater exhaust

    I'm about to install a diesel heater on my boat, can the exhaust skin fitting be positioned above the height of the heater? The location I'm thinking of would have the skin fitting about 30cm above the heater. Would the exhaust require a swan neck too?

  2. #2
    Join Date
    Jun 2009
    Posts
    12,578

    Default Re: Diesel heater exhaust

    Ours (Webasto) certainly is - by a good couple of feet. We didn't fit it - it was done professionally by a Webasto main dealer - so I cannot comment on the details of the installation.

  3. #3
    Join Date
    Mar 2004
    Posts
    6,122

    Default Re: Diesel heater exhaust

    my exhaust is at least 30cm above the heater, with a swan neck, as described in the manual.
    you don't want sea or rain water going down the exhaust.

  4. #4
    Join Date
    Jul 2012
    Location
    Jersey
    Posts
    799

    Default Re: Diesel heater exhaust

    Quote Originally Posted by simonfraser View Post
    you don't want sea or rain water going down the exhaust.
    ... or condensate.

  5. #5
    Join Date
    Jun 2009
    Posts
    12,578

    Default Re: Diesel heater exhaust

    Quote Originally Posted by Keith-i View Post
    ... or condensate.
    Indeed - but having the exhaust above the heater makes that more likely.....

  6. #6
    Join Date
    Feb 2008
    Location
    Farndon
    Posts
    3,156

    Default Re: Diesel heater exhaust

    My Eberspacher has a condensate drain of the metal elbow part of the exhaust and the exhaust outlet is above the heater .
    . https://www.butlertechnik.com/instal...92199005687-p4

  7. #7
    Join Date
    Jun 2001
    Location
    UK East Coast
    Posts
    1,914

    Default Re: Diesel heater exhaust

    Quote Originally Posted by SimonA View Post
    I'm about to install a diesel heater on my boat, can the exhaust skin fitting be positioned above the height of the heater? The location I'm thinking of would have the skin fitting about 30cm above the heater. Would the exhaust require a swan neck too?
    Mine is 30cm above water on the side of the boat and is above the Eberspacher. My skin fitting is the angled type so the exhaust tube has a loop about 80mm above the skin fitting with the last 200mm of the tube downhill to the angled skin fitting. Been ok for 5 years.

    www.solocoastalsailing.co.uk

  8. #8
    Join Date
    Aug 2015
    Posts
    251

    Default Re: Diesel heater exhaust

    I've had to fit my exhaust higher than the heater and as a consequence rain water collected in the silencer and pipe.
    Screenshot_20191029-201703.png
    Simple solution was to fit an expanding hung when not in use....

    The hull fitting is straight through not the angled version

  9. #9
    Join Date
    Jun 2017
    Posts
    239

    Default Re: Diesel heater exhaust

    Mines about level with the heater. No issues in 18 yrs

  10. #10
    Join Date
    Mar 2016
    Posts
    1,076

    Default Re: Diesel heater exhaust

    It needs to be higher really. Also states this very clearly in manual

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