Mitsubishi Electric City Multi PKFY-P32VHM-E Manual De Instalación página 6

B
45±2°
Fig. 4-1
A Flare cutting dimensions
Copper pipe O.D. Flare dimensions
(mm) øA dimensions (mm)
ø6.35
ø9.52 12.8 - 13.2
ø12.7 16.2 - 16.6
ø15.88 19.3 - 19.7
ø19.05 22.9 - 23.3
B Refrigerant pipe sizes & Flare nut tightening torque
C Do not apply refrigerating machine oil to the screw portions.
(This will make the flare nuts more apt to loosen.)
D Be certain to use the flare nuts that are attached to the main unit.
(Use of commercially-available products may result in cracking.)
Pipe size O.D.
(mm)
P50
E Apply refrigerating machine oil over the entire flare seat surface.
6
C
8.7 - 9.1
R410A
Liquid pipe
Tightening torque.
(N·m)
14 - 18
14 - 18
4.1. Connecting pipes (Fig. 4-1)
with commercially available insulation materials (heat-resistant to 100 °C or
more, thickness of 12 mm or more).
D
insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
tightening flare nut.
Insulate carefully.
Warning:
When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
Gas pipe
Pipe size O.D. Tightening torque.
(mm) (N·m)
49 - 61
49 - 61
Fig. 4-2
4.2. Positioning refrigerant and drain piping (Fig. 4-2)
A Gas pipe
* Indicates the condition with accessories mounted.
B Liquid pipe
C Drain hose (Effective length: 400)
D Left-side piping knockout hole
E Right-side piping knockout hole
F Lower piping knockout hole
G Mount board 1
Flare nut O.D.
Liquid pipe Gas pipe
(mm) (mm)
17 26
17 26