After pressurizing the heat exchanger with water, drain it; to what extent of drying is considered acceptable?
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After pressurizing the heat exchanger with water, it needs to be drained; to what extent of drying is considered acceptable? Requirement: The heat exchanger must be able to survive the winter safely!
Does this also need a standard? Are you just short of those half an hour?
Just drain the excess water; there’s no need to dry it completely
Just blow it dry with compressed air.
Dry in the air. It’s best to keep it indoors, not outdoors. I guess it must be pretty cold there