Refrigerant Piping - Daikin VRV Plus Series General Information Manual

Si33-003.book Page 136 Monday, June 25, 2001 9:06 AM

Refrigerant Piping

6. Refrigerant Piping

6.1 Refrigerant Piping
Caution All field piping must be installed by a licensed refrigeration technician and must comply with relevant local
and national regulations.
Notes:
136
Use R-407C only when adding refrigerant.
Installation tools:
Make sure to use installation tools (gauge manifold charge hose, etc.) that are exclusively used for R-
407C installations to withstand the pressure and to prevent foreign materials (e.g. mineral oils such as
SUNISO and moisture) from mixing into the system.
Vacuum pump (use a 2-stage vacuum pump with a non-return valve):
1. Make sure the pump oil does not flow oppositely into the system while the pump is not working.
2. Use a vacuum pump which can evacuate to -100.7 kPa (5Torr, -755mmHg).
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SiE33-003
Installation Manual