Mitsubishi Electric PMFY-P VBM-E Installation Manual page 5

3. Refrigerant pipe and drain pipe
45°±2°
Fig. 3-2
B Refrigerant pipe sizes & Flare nut tightening torque
Pipe size
P20/25/32/40
Max. 20m
0.75 –1.5m
Fig. 3-4
R410A
Liquid pipe
Tightening torque
14 - 18
.
Fig. 3-3
Max. 15cm
3.2. Connecting pipes (Fig. 3-2)
with commercially available insulation materials (heat-resistant to 100 °C or more,
sulate carefully.
Warning:
ing the compressor.
A Flare cutting dimensions
Copper pipe O.D.
ø6.35
ø9.52
ø12.7
ø15.88
ø19.05
Gas pipe
Pipe size Tightening torque
49 - 61
C
* Do not apply refrigerating machine oil to the screw portions.
D
I
2. Flare-cut the liquid and gas pipes then apply refrigerating machine oil (to be lo-
4. Slide the supplied pipe cover
sheet metal inside the unit.
5. Slide the provided pipe cover
the sheet metal inside the unit.
3
6. Tighten the pipe cover
A Gas piping
B Liquid piping
C 4
D Pipe cover 3
3.3. Drainage piping work (Fig. 3-4)
ward slope.
1 Correct piping
2 Wrong piping
A
B
C Support metal
Grouped piping
D
E
F
G
piping.
Flare dimensions
8.7 - 9.1
12.8 - 13.2
16.2 - 16.6
19.3 - 19.7
23.6 - 24.0
Flare nut O.D.
Liquid pipe Gas pipe
17
3
over the gas piping until it is pressed against the
3
over the liquid piping until it is pressed against
E Turn the seam upward.
F Press the pipe cover against the sheet metal.
G Refrigerant piping heat insulating material
H Wrap tightly.
I Cut off excess length of band.
K Air bleeder
L Raised
M Odour trap
N
O
H
I O.D. ø38 PVC TUBE for grouped piping
J Up to 50 cm
-
-
-
26
4
.
-
5