Carrier 38GL2M18G - Refrigerant Connection Best Practices; Purity and Leak Prevention; Brazing, Vacuum, and Charging Methods

38GL_M…G / 38YY(S)_M…G
GB - 8
Refrigerant connections
No moisture.
No dust.
No leak.
No mineral oil.
Neat.
Dry nitrogen brazing.
Vacuum.
Min.
– 100 kPa
(– 755 mmHg)
Charge liquid-no gas.
Copper tubes during storage.
Use tools designed for R-410A higher pressure.
Keep inside clean.
2-stage vacuum pump. Replace oil regularly.
1/2” UNF (R-410A)
7/16” UNF (R-22)