i went down to boc gas and got a D size c02 bottle.
after reading berkuts post i just couldn’t wait for my copper pipe.
i just grabbed the 1Hp system and gave it a upgrade.
i gave it some bbr290, hc22/502 and some c02.
pressure is 20psig/330psig and -46c, so i must be autocascadeing.
i switched off and are now adding some insulation.
It took me 4.5 hrs to upgrade and to a test run.
I have a long way to go though.
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