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How do you get the pipes through the wall in a pre charged unit? Do they have two pieces connected by a special valve? I’m curious about how they keep the air o
by culopatin 4y ago
How do you get the pipes through the wall in a pre charged unit? Do they have two pieces connected by a special valve? I’m curious about how they keep the air out of the lines.
- thedougd 4y agoPre-charge has one of two meanings here. Most mini-split units have the refrigerant in the compressor unit. After a complete installation, evacuation, etc, you open a valve to release the refrigerant into the lines. There are also DIY variants where a fixed line length comes from the factory with either a vacuum or a refrigerant in the line. The lines have metal seals on the fittings that are ruptured when torqued down on the equipment.