Outdoor Unit Installation; Flaring Work And Pipe Connection - Mitsubishi Electric MXZ-2D33VA Installationsanleitung

2. OUTDOOR UNIT INSTALLATION

2-1. CONNECTING WIRES FOR OUTDOOR UNIT
1) Remove the service 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) Fix indoor/outdoor unit connecting wire (B) and power supply cord (A)
with the cable clamps.
7) Close the service panel securely. Make sure that 3-2. PIPE CONNEC-
TION 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.
Indoor/outdoor unit connecting wire
Terminal block
UNIT
<INDOOR UNIT>

3. FLARING WORK AND PIPE CONNECTION

3-1. 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)
• 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.
A (mm)
Pipe diameter Nut
Clutch Clutch
(mm) (mm)
type tool type tool
for R410A for R22
ø6.35 (1/4") 17
ø9.52 (3/8") 22
0 to 0.5 1.0 to 1.5
ø12.7 (1/2") 26
ø15.88 (5/8") 29
<OUTDOOR UNIT>
Terminal block for
power supply
POWER SUPPLY
~/N 230 V 50 Hz
UNIT
Tightening torque
Wing nut
type tool N•m kgf•cm
for R22
13.7 to 17.7 140 to 180
1.5 to 2.0
34.3 to 41.2 350 to 420
49.0 to 56.4 500 to 575
2.0 to 2.5
73.5 to 78.4 750 to 800
Terminal block for power supply
Service panel
15 mm
35 mm • 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 oth-
ers. (More than 35 mm)
Lead wire
• For future servicing, give extra length
to the connecting wires.
Copper
pipe
Fig. 1
Copper pipe
Burr
Spare reamer
Pipe cutter
Fig. 3
Smooth all
around
Copper pipe
Die
Flare nut
Fig. 5
No good
Good
Tilted Uneven Burred
Fig. 2
Flaring tool
Clutch type Wing nut type
Fig. 4
Inside is shin-
ing without any
scratches.
Even length
all around
Fig. 6
En-4