Mitsubishi Electric City Multi PLFY-P VBM-E Serie Manual De Instalación página 5

B
Liquid pipe
Pipe size
(mm)
P50
Max. 20m
1.5–2m
11
25 25 25
R410A
Gas pipe
Tightening
Tightening
Pipe size
torque torque
(mm)
(N.m) (N.m)
49 - 61
49 - 61
34 - 42
34 - 42
Refrigerant pipe and
insulating material
Pipe cover (large)
Pipe cover (small)
Refrigerant pipe (gas)
Refrigerant pipe (liquid)
Band
Cross-sectional view of
connection
Pipe
Insulating material
Squeeze
Max. 15cm
(mm)
,
Flare nut O.D.
Liquid pipe Gas pipe
(mm) (mm)
17 26
17 26
22 29
22 29
C
* Do not apply refrigerating machine oil to the screw portions.
D
(Use of commercially-available products may result in cracking.)
Heat insulation for refrigerant pipes:
1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that
the end of the pipe cover touches the side of the unit.
2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure that
the end of the pipe cover touches the side of the unit.
3 Secure both ends of each pipe cover with the enclosed bands. (Attach the bands
20 mm from the ends of the pipe cover.)
connections for gas leakage with nitrogen gas. (Check that there is no refrigerant
leakage from the refrigerant piping to the indoor unit.)
more downward slope.
1 Correct piping
2 Wrong piping
A Insulation (9 mm or more)
B
C Support metal
K Air bleeder
L Raised
M Odor trap
Grouped piping
D
E Make it as large as possible
F Indoor unit
G Make the piping size large for grouped piping.
H
I
(9 mm or more insulation)
J
1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 3-5)
5. Insulate the drain port with insulating material, then secure the material with a
band. (Both insulating material and band are supplied with the unit.)
A Unit
B Insulating material
C Band (large)
D Drain port (transparent)
E Insertion margin
F Matching
G
H Insulating material (purchased locally)
I
J
K Band (small)
L Drain socket