Flaring Work And Pipe Connection - Mitsubishi Electric NTXUKS06A112A Series Installation Manual

2-4. CONNECTING WIRES FOR INDOOR UNIT
Note: The unit should be installed by a licensed contractor/electrician. If required by applicable national, state and local codes; a disconnect switch will need to be
installed when the indoor unit is powered from the outdoor unit.
1) Remove disp cover.
2) Remove the conduit plate.
3) Attach the conduit pipe to the conduit plate with the lock nut. The indoor/outdoor unit connecting wire
than 7/8 in. (23 mm). (Fig. 1)
4) Process the end of ground wire (Fig. 2). Connect it to the ground terminal of the electrical parts box.
5) Process the end of indoor/outdoor unit connecting wire
block securely so that its core cannot be seen, and no external force affects the connecting section of the terminal block.
6) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
7) Reinstall the conduit plate.
8) Pass indoor/outdoor unit connecting wire
9) Loosen terminal screw, and connect first the ground wire, then indoor/outdoor unit connecting wire
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.
10) Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull the wires lightly to confirm that they do not move.
11) Reinstall the disp cover.
Terminal block
Ground wire
Indoor terminal block
Grounding terminal*
Indoor/outdoor unit
connecting wire
D
Remark:
* Use a ring tongue terminal
in order to connect a ground
wire to terminal.
Outdoor terminal block
• For future servicing, give extra length to the connecting wires.
When the ceiling is above 8 ft. (2.4 m) and 9 ft. (2.7 m) or below
Move the slide switch (SW3) to the right to increase airflow volume.
* When the ceiling is above 9 ft. (2.7 m), airflow volume may be insufficient even
with the slide switch (SW3) set to "increase airflow".
1) Make sure that the breaker for air conditioner is turned OFF.
2) Remove disp cover of the indoor unit.
3) Slide out the electronic control P.C. board, and switch up the slide switch (SW).
4) Put the electronic control P.C. board back to the original position, and install
disp cover.
Note:
• Perform static elimination before setting.
• Default setting is Normal.

3. FLARING WORK AND PIPE CONNECTION

3-1. PIPING WORK
1) Remove the pipe cover, hose band, pipe band, and spacer (cushion) of the
indoor unit. Dispose of the spacer (cushion), as it will not be needed.
2) When using pipe with super insulating material (about ø1-7/8 in. (ø48 mm)
liquid pipe, ø2 in. (ø51 mm) gas pipe) for indoor connecting pipe, remove plate
and turn it over so that the concave part faces upward.
EN-7
(Fig. 2). Attach it to the terminal block. Be careful not to make mis-wiring. Attach the wire to the terminal
D
process the end of the wire.
D
Terminal block
Indoor/outdoor unit
connecting wire
D
Disp cover
Disp cover
• For future servicing, give extra length to the connecting wires.
• Do not fold the excess wire, or cram it into small space. Take caution not to damage the wires.
• Be sure to attach each screw to its correspondent terminal when securing the cord and/or the wire
appearing from the inside of conduit pipe should be less
D
to the terminal block. Be careful not to make mis-wiring. Fix
D
Grounding
terminal
Electrical box
to the terminal block.
Plate
Pipe band
(turn over)
Pipe cover
Conduit plate
Less than 7/8 in.
(23 mm)
Lock nut
Conduit pipe
9/16 in.
1-3/8 in.
(15 mm)
(35 mm)
Lead wire
Lock nut
Conduit pipe
Conduit plate
ø7/8 in. (ø22.2 mm)
Screw
Electronic
control P.C.
board
Slide switch SW3
Normal Increase airflow
volume
TB base
Disp cover
[When using pipe with super insulating material]
Plate
Plate
Fig. 1
Fig. 2