Mitsubishi Electric MXZ-3C24NA2 Notice D'installation page 6

3. F A ING W
3- . F A ING W
1) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2)
dimension shown in the table. Select A inch (mm) from
the table according to the tool selected.
Pipe diameter
[inch (mm)] [inch (mm)]
Clutch type tool for R410A
3-2. PIPE C NNECTI N
the pipe connections of the outdoor unit.
2) Align the center of the pipe with that of the pipe connections of the outdoor
piping may result in burns or frostbite.
3-3. INSU ATI N AND TAPING
the temperature and humidity are high, wind additional commercially sold
4. PU GING P
4- . PU GING P CEDU ES AND EA TEST
on the gas pipe side of the outdoor unit.
psi [Gauge] ( 0.101 MPa).
–
without fully opening lowers the performance and this causes trouble.
sure to charge slowly with liquid refrigerant. Otherwise, composition of the
refrigerant in the system may be changed and affect performance of the air
conditioner.
10
En-5
AND PIPE C NNECTI N
Clutch type
A [inch (mm)]
Clutch type tool for R22
0 to 0.02 0.04 to 0.06
(0 to 0.5) (1.0 to 1.5)
CEDU ES, EA TEST, AND TEST UN
Good
Copper
pipe
Fig. 1
Flaring tool
Die
Flare nut
Wing nut type
Fig. 4
Wing nut type tool for R22
0.06 to 0.08
(1.5 to 2.0)
0.08 to 1.0
(2.0 to 2.5)
WARNING
When installing the unit, securely
connect the refrigerant pipes before
starting the compressor.
CAUTION
When there are the ports which are
not used, make sure their nuts are
tightened securely.
*4 to 5 turns
(Torque
*Close
*Open cm)
14.7
–
Precautions when us-
Close Open
Charge hose
(for R410A)
No good
Copper pipe
Spare reamer
Pipe cutter
Fig. 2
Smooth all
around
Copper pipe
all around
B
Fig. 5
Tightening torque
ft-Ib
49.0 to 56.4
54 to 58
Compound pressure
gauge (for R410A)
–14.7 psi
(–0.101MPa)
lb,
140
Low
(Torque 15 to
22 ft-lb, 19.6 to
for GAS
deform or loosen if excess pres-
sure is applied. This may cause
A
then tighten part A. Do not tighten
core is in open position.
Inside is shin-
ing without any
scratches.
Fig. 6
140 to 180
500 to 575
750 to 800
Pressure gauge
(for R410A)
Gauge mani-
R410A)
Charge hose
(for R410A)
(for R410A)