Mitsubishi Electric 2.5KKC, Руководство по установке

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18
E
6. Cooling pipe and drain pipe
6.4. Refrigerant piping
2) Outdoor unit
1 Pipe take-in direction
The pipe can be passed in any of the four directions: front, rear, right and
lower side.
A
Front piping (knockout)
B
Lower piping
C
Right piping (knockout)
D
Back piping
E
Piping cover
2 Remove the service panel (three screws) and the piping cover
(one screw).
F
Stop valve
G
Bending radius R 100 - 150 mm
H
Extraction direction for service panel
J
Service panel
s
Be careful not to break the bent portion when connecting the pipes. Be
sure to use two spanners to tighten the flare nuts.
3 When racking the pipes, keep the racking below the top of the
piping cover to allow easy service panel removal.
I
Racking
6.4. Refrigerant piping
3) Specified tightening torques (use a torque
wrench)
Torque specifications
Outer dia. of copper tube (mm) Tightening torque (kg/cm)
ø9.52 350 - 420
ø15.88 750 - 800
• If a torque wrench is not available, the following method may be used.
While tightening the flare nut with a spanner, stop turning the nut at the
point where the tightening torque suddenly increases. Then, turn the
spanner the angle specified in the table below.
Approximate additional tightening angle
Pipe diameter Tightening angle
ø6.35, ø9.52 60
°
– 90
°
ø15.88 30
°
– 60
°
I
E
1
2
3
A
B
C
D
E
H
F
E
J
G