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Old 12-06-2011, 01:47 PM   #1
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HELP! Climate Master heat pump, can they freeze?


I have a climate master geothermal unit in storage for use next year. It was removed as a used unit. I TOTALLY forgot about it and to check into draining the water coil down. It is in freezing temps right now. I am not sure if they can hold enough water to be an issue or if they will drain most out when removed?


Last edited by viper; 12-06-2011 at 02:02 PM.
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Old 12-06-2011, 01:54 PM   #2
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HELP! Climate Master heat pump, can they freeze?


The water coil? Explain please.

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Old 12-06-2011, 02:03 PM   #3
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HELP! Climate Master heat pump, can they freeze?


Oops, forgot to add geothermal. This would be the exchanger coil for a water source or ground loop
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Old 12-06-2011, 02:26 PM   #4
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HELP! Climate Master heat pump, can they freeze?


OK. But the liquid used in geothermal applications is of he anti-freeze variety. Probably should have drained or blown it out anyway, but as far as freezing....you should be OK.
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Old 12-06-2011, 03:00 PM   #5
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HELP! Climate Master heat pump, can they freeze?


This one was operated as a water source unit, open loop from a well. I just went and tried to blow through both the desuperheater and main exchange coil and neither would pass air. I checked temp at present and it is 33-34F. Probably dipping just below freezing right now so I put a heater in the cabinet to make sure everything gets above freezing and try again. If I get water out, it would be safe to assume there was ice blockage, NOT good... I am just hoping it is configured so the ice could expand axially and not radially and tear it up.

I am a little irritated with myself at the present..
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Old 12-06-2011, 03:17 PM   #6
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HELP! Climate Master heat pump, can they freeze?


If I was a betting man I would say you'll be just fine.
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Old 12-06-2011, 03:23 PM   #7
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HELP! Climate Master heat pump, can they freeze?


big difference between 32F water and 32F ice in BTUs to make the change you OK if you feel doubtful 100watt light bulb on a drop light next to the exchanger will safe it out....never going to have ice at 32F with a degree at a time blowing winds at 20F sure put a cup of water there to monitor it..

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Old 12-06-2011, 03:28 PM   #8
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HELP! Climate Master heat pump, can they freeze?


Well, if it was indeed froze, I will know shortly if air will then move through the exchanger. Once I get some water out, I should not have no reason to keep it warm after that. I know there was expansion room in the exchanger and it sat through the heat of the summer probably evaporating some of the water out. We are swinging into the low teens now but the unit is of course in a storage space indoors but not heated.
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Old 12-06-2011, 07:02 PM   #9
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HELP! Climate Master heat pump, can they freeze?


Yep, she was frozen up. Had just a little in the desuperheater section but maybe a pint in the main exchanger coil. Now I guess I just have to pray I did not damage anything...
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Old 12-06-2011, 09:43 PM   #10
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HELP! Climate Master heat pump, can they freeze?


remove the cap off the suction line and burp it to see if you have freon pressure no pressure the tube is busted....spirt of freon like on a car tire your solid on the tubes within...
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Old 12-06-2011, 10:20 PM   #11
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HELP! Climate Master heat pump, can they freeze?


I go take a peek at that. I was planning to do an air pressure test as well. Don't need to unit any time soon but it will bug me if I don't know. I was surprised to see some green crap come out of the desuperheater lines but thought it was just copper oxides. I sure hope so. I will go find out!
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Old 12-06-2011, 10:29 PM   #12
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HELP! Climate Master heat pump, can they freeze?


if it wasn't under pressure the charges are blown..busted tubes
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Old 12-06-2011, 10:45 PM   #13
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HELP! Climate Master heat pump, can they freeze?


I checked the suction line port and I had pressure there. I also confirmed that the blue funk was Copper oxides. Actually all of the tube IDs are green from running it on hard water. Not ideal but the price was right on it. I supposed if I run a pressure test on it and that passes, I will consider it disaster averted but not confirmed until reinstalled.

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