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!
Makes sense, The photos are the make-up water valves to top up the loop. If the loop has any air than bleed the system at the highest air handler as it will have a bleeder tube. Recommended Glycol amount is 10 % of the total volume of the chiller loop and while not necessary. food grade glycol is a safer bet to use rather than the poison stuff. Pressure in the loop is usually determined by total volume but regularly between 10 -20 PSI,
