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Chiller - how to add coolant/water

Discussion in 'HVAC' started by Yeswayjose, Jul 5, 2025 at 10:20 AM.

  1. Yeswayjose

    Yeswayjose New Member

    Joined:
    Yesterday
    Messages:
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    Location:
    Florida
    I'm not an HVAC guy, but I work on everything onboard boats. I'm helping a friend on a Uniesse. It's got 2 25k btus Climma chillers.

    I was able to get the system to work, but I need to add coolant and bleed the system of air.

    First question - Should I add a specific type/mix of coolant/glycol/water?

    Second question: how do I add coolant and bleed the system? I see there's a valve closing part of the system. If you open the valve seems like it adds coolant to the system. It's above the chillers. Is that kind of a service loop? Does that mean to add coolant and bleed I just need to stop the pump, pump coolant into the plug I see at the highest point, wait for ai to come out and then close that loop again?

    Does it make sense?

    Thanks in advance!

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