Installation Of Refrigerant Piping; Flow Chart Of Installation; Three Principles Of Refrigerant Piping Installation - Gree DC Inverter Multi VRF Service Manual

DC INVERTER MULTI VRF

6 INSTALLATION OF REFRIGERANT PIPING

6.1 Flow Chart of Installation

6.2 Three Principles of Refrigerant Piping Installation

Keep to the three principles of refrigerant piping:
Key Factors
Dry Invasion of outside water
Example:
water
Invasion of indoor condensate
Clean Formation of oxides inside the
pipe during welding
Invasion of dust and foreign
articles from outside
Airtight Incomplete welding
Leakage from flared port
Leakage from edge
Installation of
indoor unit
Fabrication according to
piping design dimension
Installation of
connection pipes
Expel with nitrogen
Welding
Purge
Airtight test
Vacuuming and
drying
Rainwater, engineering
Measures to Avoid Failure
Fabrication of
Purge
fitting pipe
Expel with nitrogen 0.05 0.3Mpa
Fabrication of
fitting pipe
Use suitable materials
(copper tube, soldering bar)
Observe the basic
welding procedures.
Observe the basic operations
for flaring of fitting pipe
Observe the basic
interfacing procedures
INSTALLATION
Vacuuming and
drying
Purge
140