Daikin VRV Plus Series General Information Manual page 19

Si33-003.book Page 15 Monday, June 25, 2001 9:06 AM
SiE33-003
3.2.3 Refrigerant Pipe Work
The 3 Principles of The "3 principles of refrigerant piping" must be strictly observed
Refrigerant Piping
Make sure there is no moisture
inside the pipes
General Information
Operational steps
Install indoor unit Cut pipes to size
Solder Flushing
Cause of problem
l
Rainwater, work water,
etc. gets into pipes from
outside
l
Moisture generated inside
pipes due to condensation
l
Formation of oxides inside
pipes during soldering
l
Dirt, dust or other
extraneous material gets
into pipes from outside
l
Leak from soldered area
l
Leak from flared area
l
Leak from flange area
The 3 princples of refrigerant piping
Dry
Make sure there is no dirt inside the
pipe
Fit pipes
provisionally
Air tight test
Actoin to avoid problem
Pipe covering Flushing
Replace nitrogen
Pipe covering
Use the proper materials (copper pipe,
solder, etc.)
Adhere strictly to standard soldering
work practice
Adhere strictly to standard flaring work
practice
Adhere strictly to standard flange
connection work parctice
Clean
Make sure the refrigerant does not
leak out
: http://splitoff.ru/tehn-doc.html
Installation
Replace nitrogen
Vacuum drying
(V0963)
Vacuum drying
Flushing
Air tight test
(V0964)
Air tight
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