330 DA Cockpit heater

Discussion in 'General Maintenance/Repair Questions' started by Paolucci, Apr 7, 2021.

  1. Paolucci

    Paolucci New Member

    15
    Oct 1, 2020
    330 Sundancer
    twin 5.7
    I have a 95' 330 DA that has a cockpit heater with 2 vents, I cannot figure out how the unit works. I turn it on but it does not appear to produce any type of heat.....can anyone help elaborate on its function?

    Thanks in advance
     
  2. LTD.330

    LTD.330 Well-Known Member

    Oct 5, 2009
    Lake Erie
    1999 Sundancer 330
    7.4 MPI
    The heater works like the heater in your car. The engine has to be running and up to operating temperature before the hot water flowing through the heat exchanger starts producing heat.
     
  3. Sgrochow

    Sgrochow New Member GOLD Sponsor

    21
    Oct 29, 2016
    Buffalo NY
    1998 40 DA
    3116 Cats
    Ditto.

    I installed an aftermarket Heater Craft unit on my 30’. Tapped into hot water on port engine, worked great but you had to be at operating temp to produce heat. In addition, the unit didn’t produce a lot of heat at low speed. They recommended an auxiliary pump for extended low speed ops.
     
  4. Paolucci

    Paolucci New Member

    15
    Oct 1, 2020
    330 Sundancer
    twin 5.7
    Thank you for the clarification...have a great summer. Were in Catawba Island.....I see your on Lake Erie ?
     
  5. Paolucci

    Paolucci New Member

    15
    Oct 1, 2020
    330 Sundancer
    twin 5.7
    Thanks for the clarification
     
  6. LTD.330

    LTD.330 Well-Known Member

    Oct 5, 2009
    Lake Erie
    1999 Sundancer 330
    7.4 MPI
    We are playing in the same playground. Our boat is on Catawba as well.
     
  7. Confused

    Confused New Member

    24
    Aug 23, 2019
    Lake Minnetonka, MN
    ‘96 330 Sundancer
    454 Hurth V-Drive
    I've found the engines need to be above 1k RPM to get any heat to the heater core. In reading the manual, our setup should have a circulation pump to lift the heater water to the core. I may install one this year. On another note, I use mine more without heat on during hot summer days.
     

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