Mitsubishi Electric MSZ-GL71VGD, Installation Manual

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Burr
Copper pipe
Spare reamer
Pipe cutter
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)
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as you remove burrs in order to avoid to let burrs drop
in the piping.
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then put them on pipe having completed burr removal.
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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
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3-3. PIPE CONNECTION
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age.
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in burns or frostbite.
Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
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tion oil on screw threads. Excessive tightening torque will result in damage on the screw.
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Pipe diameter
(mm)
Nut
(mm)
A (mm) Tightening torque
Clutch type
tool for
R32,R410A
Clutch type
tool
for R22
Wing nut
type tool
for R22
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17
0 to 0.5 1.0 to 1.5
1.5 to 2.0
13.7 to 17.7 140 to 180
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22 34.3 to 41.2 350 to 420
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26
2.0 to 2.5
49.0 to 56.4 500 to 575
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29 73.5 to 78.4 750 to 800
Copper
pipe
Good
Tilted Uneven Burred
No good
Fig. 1
Fig. 2
Clutch type
Flaring tool
Fig. 4 Fig. 3
Smooth all
around
Even length
all around
Inside is shin-
ing without any
scratches.
Flare nut
Die
Fig. 5 Fig. 6
3. OUTDOOR UNIT INSTALLATION
Copper pipe
Wing nut type
WARNING
When installing the unit, securely connect the refrigerant
pipes before starting the compressor.
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,
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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.
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and/or the wire to the terminal block.
35 mm
15 mm
Lead wire
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the
same manner applied for indoor unit.
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same tightening torque applied for indoor unit.
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.
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and humidity are high, wind additional commercially sold insulation to prevent condensa-
tion.
WARNING
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complete all brazing prior to connecting indoor unit to outdoor unit.
Power supply cord (K)
1 2 3 C
This unit has demand response capability which is compliant with AS/NZS 4755.3.1.
To activate this function, you need to make a contract with remote agents such as
electric supply company, then this unit should be connected to Demand response en-
abling devise (DRED). For further information, consult your dealer. This unit supports
3 Demand Response Modes (DRMs): DRM1, DRM2 and DRM3.
CAUTION
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DRED and the power supply cord as parallel as possible.
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power supply.
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Terminal block
Cord clamp
Cable strap
The tip should be
pointed to the left side.
Power supply
cord (K)
Indoor/outdoor
unit connecting
wire (A)
1 : DRM 1
2 : DRM 2
3 : DRM 3
C : COMMON
AS/NZS4755
terminal block