8
Installation instruction
3. Pipe "c" diameter ( outdoor pipe diameter)
Note:
When the distance from outdoor to the longest indoor is
over 30m, the main pipe should be the enlarged diameter.
Model Gas pipe (mm) Liquid pipe (mm)
AU042FNERA Ø15.88 Ø9.52
AU052FNERA Ø15.88 Ø9.52
Copper pipe selection:
Note: If the copper pipe with outer diameter 19.05 is coil
pipe, the thickness should be over 1.1.
hardness softness
Outer diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88
Min. thickness (mm) 0.8 0.8 1.0 1.0
hardness Half-hardness
Outer diameter (mm) Ø19.05 Ø22.22 Ø25.24 Ø28.58
Min. thickness (mm) 1.0 1.1 1.2 1.4
Piping connection method:
Pipes can be connected in four directions
A, B, C, D:Copper pipe hole
E:Power cord hole (with its own cable sheath)
F:Communication line hole
A
B
C
D
E
F
Enlarged diagram
As shown in the gure, the piping can be connected from four directions. Through the front / rear hole piping piping on
the cover hole or crack directly across the oor.
From the outdoor machine unloading piping cover with a screwdriver and hammer knock off holes along the guide wire
break. Then, trim the edges of the holes, and mounted on the insulating sleeve (site) to protect the piping and wiring.
Pipe specication:
a
a
a
a
b
b
c
1. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe)
Please refer to the indoor air conditioner manual.
2. Pipe "b" diameter (between branch pipes)
Total indoor capacity after the branch pipe (x100W) Gas pipe (mm) Liquid pipe (mm)
X<112 Ø15.88 Ø9.52
112≤X< 234 Ø19.05 Ø9.52
liquid pipes
gas pipes