Hitachi RAC-25WSA RAC25WSA User Manual
Product codes
RAC25WSA
11-1
11 REFRIGERANT PIPING AND REFRIGERANT CHARGE
CONTENTS
11
REFRIGERANT PIPING AND REFRIGERANT CHARGE ________________________ 11-1
11.1.
REFRIGERANT PIPING __________________________________________________ 11-2
11.1.1.
Preparation of pipe _______________________________________________________11-2
11.1.2.
Pipe Connection _________________________________________________________11-2
11.1.3.
Removal of air from the pipe and gas leakage inspection _________________________11-2
11.2.
RECOVERY OF REFRIGERANT DURING RELOCATION OR UNINSTALLING OF
UNIT. _________________________________________________________________ 11-3
UNIT. _________________________________________________________________ 11-3