En-4
1 2 3 C
(MXZ-2E)
(MXZ-3E)
(MXZ-4E)
(MXZ-2E)
(MXZ-3E)
(MXZ-4E)
35 mm
15 mm
Lead wire
• Be sure to attach each screw to its correspondent
terminal when securing the cord and/or the wire to
the terminal block.
• Make earth wire a little longer than others.
(More than 35 mm)
• For future servicing, give extra length to the con
-
necting wires.
<OUTDOOR UNIT>
Indoor/outdoor unit
connecting wire
<INDOOR UNIT>
Terminal block
Terminal block
Terminal block
Terminal block for
power supply
Terminal block
2-1. CONNECTING WIRES FOR OUTDOOR UNIT
1) Remove the service panel, top panel, front panel.
2) Loosen terminal screw, and connect indoor/outdoor unit connecting wire (B) 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) Perform 2) and 3) for each indoor unit.
5) Connect power supply cord (A).
6) Connect the demand control transmission cable to the terminal block for DRED
Interface.
7) Fix indoor/outdoor unit connecting wire (B) and power supply cord (A) with the
cable clamps.
8) Fix the demand control transmission cable with the cable strap.
9) Close the service panel , top panel, front panel securely. Make sure that 3-2. PIPE
CONNECTION is completed.
•
After making connections between both power supply cord (A) and indoor/outdoor
unit connecting wire (B), be sure to fix both cable and wire with cable clamps.
2. OUTDOOR UNIT INSTALLATION
POWER SUPPLY
~/N 230 V 50 Hz
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 enabling devise (DRED). For further information,
consult your dealer. This unit supports 3 Demand Response Modes (DRMs): DRM1, DRM2 and DRM3.
CAUTION
• To prevent malfunction caused by noise, route the cord connecting this unit to DRED and the power supply cord as parallel as possible.
• Do not connect the demand control transmission cable to the terminal block for power supply.
• Do not pull, extremely bend or apply strong pressure on the wire to prevent failure.
• Do not screw DRED to outdoor unit.
• Do not put DRED in outdoor unit.
• Secure electrical wiring above clamp.
• Do not get DRED wire caught in the service panel.
1 : DRM 1
2 : DRM 2
3 : DRM 3
C : COMMON
AS/NZS4755
terminal block
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
3-1. FLARING WORK
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
ø6.35 (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
ø9.52 (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
Tilted Uneven Burred
Good
No good
Burr
Copper pipe
Spare reamer
Pipe cutter
Smooth all
around
Even length
all around
Inside is shin-
ing without any
scratches.
Flare nut
Die
Copper pipe
Clutch type
Flaring tool
Wing nut type
Copper
pipe
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)
• Aim the copper pipe downward while removing burrs to prevent burrs from
dropping in the pipe.
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 selected.
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.
3. FLARING WORK AND PIPE CONNECTION
Terminal block
for DRED Interface
Front panel
Service panel
Terminal block
for power supply
Cable strap
The tip should be
pointed upwards.
Top panel
