Carrier 42PQV...S Installation Manual page 14

42PQV...S/38VBH...S
Refrigerant connections
No moisture.
No dust.
No leak.
No mineral oil.
Neat.
Dry nitrogen brazing.
Vacuum.
Charge liquid-no gas.
Copper tubes during storage.
1/2" UNF (R-410A)
7/16" UNF (R-22)
Use tools designed for R-410A higher pressure.
Keep inside clean.
2-stage vacuum pump. Replace oil regularly.
E N G L I S H
GB - 13