Mitsubishi Electric MSZ-AP15VG, Руководство по установке

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EN-5
EN
3. OUTDOOR UNIT INSTALLATION
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1) Open the service panel.
2) Loosen terminal screw, and connect indoor/outdoor unit connecting wire (A)
from the indoor unit correctly on the terminal block. Be careful not to make
mis-wiring. Fix the wire to the terminal block securely so that no part of its core
is appeared, and no external force is conveyed to the connecting section of
the terminal block.
3) Firmly tighten the terminal screws to prevent them from loosening. After
tightening, pull the wires lightly to confirm that they do not move.
4) Connect power supply cord (K).
5) Fix indoor/outdoor unit connecting wire (A) and power supply cord (K) with the cord
clamp.
6) Close the service panel securely.
35 mm
15 mm
Lead wire
Power supply cord (K)
3-2. FLARING WORK
1) Cut the copper pipe correctly with pipe cutter.
(Fig. 1, 2)
2) Completely remove all burrs from the cut
cross section of pipe. (Fig. 3)
• Put the end of the copper pipe to
downward direction as you remove burrs
in order to avoid to let burrs drop in the
piping.
3) Remove flare nuts attached to indoor and
outdoor units, then put them on pipe having
completed burr removal. (Not possible to put
them on after flaring work.)
4) Flaring work (Fig. 4, 5). Firmly hold copper
pipe in the dimension shown in the table.
Select A mm from the table according to the
tool you use.
5) Check
• Compare the flared work with Fig. 6.
• If flare is noted to be defective, cut off the flared section and do flaring
work again.
Copper
pipe
Good
Tilted Uneven Burred
No good
Fig. 1
Fig. 2
Burr
Copper pipe
Spare reamer
Pipe cutter
Clutch type
Flaring tool
Fig. 4
Fig. 3
Wing nut type
Smooth all
around
Even length
all around
Inside is shining with-
out any scratches.
Fig. 6 Flare nut
Die
Fig. 5
Copper pipe
Pipe diameter
(mm)
Nut
(mm)
A (mm) Tightening torque
Clutch
type
tool
for
R410A
Clutch
type
tool
for R22
Wing
nut type
tool
for R22
N•m kgf•cm
ø 6.35 (1/4”) 17
0 to 0.5 1.0 to
1.5
1.5 to
2.0
13.7 to 17.7 140 to 180
ø 9.52 (3/8”) 22 34.3 to 41.2 350 to 420
ø12.7 (1/2”) 26
2.0 to
2.5
49.0 to 56.4 500 to 575
ø15.88 (5/8”) 29 73.5 to 78.4 750 to 800
3-3. PIPE CONNECTION
• Fasten flare nut with a torque wrench as specified in the table.
• When fastened too tight, flare nut may break after a long period and cause
refrigerant leakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare
piping may result in burns or frostbite.
Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
• Apply a thin coat of refrigeration oil (J) on the flared ends of the pipes. Do not
apply refrigeration oil on screw threads. Excessive tightening torque will result
in damage on the screw.
• For connection, first align the center, then tighten the first 3 to 4 turns of flare
nut by hand.
• Use tightening torque table above as a guideline for indoor unit side union
joint section, and tighten using two wrenches. Excessive tightening damages
the flare section.
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner
applied for indoor unit, by hand.
• For tightening, use a torque wrench or spanner and
use the same tightening torque applied for indoor
unit.
WARNING
When installing the unit, securely connect the
refrigerant pipes before starting the compressor.
3-4. INSULATION AND TAPING
1) Cover piping joints with pipe cover.
2) For outdoor unit side, surely insulate every piping including valves.
3) Using piping tape (G), apply taping starting from the entry of outdoor unit.
• Stop the end of piping tape (G) with tape (with adhesive agent at-
tached).
• When piping have to be arranged through above ceiling, closet or where
the temperature and humidity are high, wind additional commercially
sold insulation to prevent condensation.
• Make earth wire a little longer than others. (More than 100 mm)
• For future servicing, give extra length to the connecting wires.
• Be sure to attach each screw to its correspondent terminal when securing
the cord and/or the wire to the terminal block.
Cord clamp
Power supply
cord (K)
Indoor/outdoor unit
connecting wire (A)
<AP15>
<AP20>
Terminal block
Terminal block
Always fix the power supply
cord on this clamp.
JG79N184H01_01En.indd 5 2021/03/17 14:50:25