Evaporaters only care about?
superheat
super heat ranges from
8 to 12
low temp refrigeration doesn't have.....
defrost
Infilitration equals
doors and windows
fresh air intake is for
oxygen starve
Whats the high temp boiling point
35-46 degrees
After installing refrigeration lines and leak checking, you need to vacuum down to....
500 microns
if there is moisture, you need to vaccum down to...
500 microns
3 things to spark a fire is
Heat, Fuel & oxygen
Define Sub cooling
liquid below the boiling point
Define Super heat
Liquid above boiling point
If the system needs gas always add vapor on.....
The low side
TXV
Maintains a constant superheat
AXV
Maintains a constant pressure
When you install an air handler it needs to be installed_______Not______
Straight, Not pitched
Semi hermatic valve runs ______ seated never ____ seated
Back, Front
What happens if a semi hermatic valve runs front seated?
The head of the compressor will explode
A 4 season climate condenser must have what?
Some type of head pressure control
What will happen if the txv Is clogged?
Ice formation