Carrier 38VYM Series - Refrigerant Connection Procedures; Refrigerant Handling and Preparation; Brazing and Vacuuming

38VYM
R-410A
GB - 6
Refrigerant connections
Charge liquid - no gas.
Protect copper tubes during storage.
Use tools designed for R-410A - higher pressure.
Keep inside clean.
2-stage vacuum pump. Replace oil regularly.
No moisture.
No dust.
No leak.
No mineral oil.
Neat.
Dry nitrogen brazing.
Vacuum.
Min.
– 100 kPa
(– 755 mmHg)
1/2” UNF (R-410A)
7/16” UNF (R-22)