small tip: put on and tight valve caps during vacuum and after opening valves. this valves leaking a lot and sucking air during vacuum. not gonna see it with gauges like this, but micron gauge shows it quiet often. also i would do tightness test under 4-6hundreds psi for an hour at least to make sure flarings not leaking.Most common place on installs like this. and exposed copper/brass need to insulate,especially near indoor units, it is going to condensate and drip a bit. lineset under ground is not really great idea🥴
small tip: put on and tight valve caps during vacuum and after opening valves. this valves leaking a lot and sucking air during vacuum. not gonna see it with gauges like this, but micron gauge shows it quiet often.
also i would do tightness test under 4-6hundreds psi for an hour at least to make sure flarings not leaking.Most common place on installs like this.
and exposed copper/brass need to insulate,especially near indoor units, it is going to condensate and drip a bit.
lineset under ground is not really great idea🥴