Mitsubishi Electric M Series Manual page 186

WALL-MOUNTED Inverter Heat Pump
CONNECTING WIRES FOR INDOOR UNIT
You can connect indoor/outdoor lead wire without removing the front panel.
1) Remove corner box.
2) Remove VA clamp.
3) Process the end of earth wire and connect it to the earth terminal of electrical parts box.
4) Process the end of indoor/outdoor unit connecting wire (A) and fix it to terminal block.
Be careful not to make miswiring. 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 sec-
tion of the terminal block.
5) Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull
the wires lightly to confirm that they do not move.
6) Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA clamp.
Never fail to hook the right claw of the VA clamp. Attach the VA clamp securely.
7) Reinstall corner box.
Terminal block
15 mm
25 mm
Lead wire
• Make earth wire a little longer than
others. (More than 55 mm)
• For future servicing, give extra length
to the connecting wires.
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.
Terminal block
15 mm
35 mm
Lead wire
C-184
VA clamp
Fixing
screw
Corner
box
Indoor/outdoor unit
connecting wire (A)
Indoor terminal block
Earth wire
(green/yellow)
Indoor/outdoor unit
connecting wire (A)
Outdoor terminal block
• Make earth wire a little longer
than others. (More than 60 mm)
• For future servicing, give extra
length to the connecting wires.
Indoor/outdoor unit
Power supply
connecting wire (A)
cord (K)
Power supply cord (K)
Cord clamp
Drain Piping
• If the extension drain hose has to pass through a room, be sure to wrap it with com-
mercially sold insulation.
• The drain hose should point downward for easy drain flow. (Fig. 1)
• If the drain hose provided with the indoor unit is too short, connect it with drain hose (I)
that should be provided at your site. (Fig. 2)
• When connecting the drain hose to the hard vinyl chloride pipe, be sure to insert it
securely into the pipe. (Fig. 3)
Drain
hose
Downward
slope
Soft hose
I.D. 15 mm
Fig. 1 Fig. 2
Do not make drain piping as shown below.
Do not raise Accumulated
drain water
Air
Water Water
Waving
leakage leakage
TEST RUN
1) Insert power supply plug into the power outlet and/or turn on the breaker. Check that
all LED lamps are not lit. If they are blinking, check that the horizontal vane is installed
correctly. Refer to operating instructions for details.
2) Press the E.O. SW once for COOL, and twice for HEAT operation. Test run will be per-
formed for 30 minutes. If the operation indicator blinks every 0.5 seconds, inspect the
indoor/outdoor unit connecting wire (A) for mis-wiring. After the test run, emergency
mode (set temperature 24ºC) will start.
3) To stop operation, press the E.O. SW several times
until all LED lamps turn off. Refer to operating instruc-
tions for details.
Checking the remote (infrared) signal reception
Press the ON/OFF button on the remote controller (6)
and check that an electronic sound is heard from the
indoor unit. Press the ON/OFF button again to turn the air
conditioner off.
• Once the compressor stops, the restart preventive de-
vice operates so the compressor will not operate for 3
minutes to protect the air conditioner.
AUTO RESTART FUNCTION
This product is equipped with an auto restart function. When the power supply is stopped
during operation, such as during blackouts, the function automatically starts operation in
the previous setting once the power supply is resumed. (Refer to the operating instruc-
tions for details.)
Caution:
• After test run or remote signal reception check, turn off the unit with the E.O. SW or
the remote controller before turning off the power supply. Not doing so will cause the
unit to start operation automatically when power supply is resumed.
To the user
• After installing the unit, make sure to explain the user about auto restart function.
• If auto restart function is unnecessary, it can be deactivated. Consult the service
representative to deactivate the function. Refer to the service manual for details.
M series
Drain hose
Hard vinyl chloride
70 cm or
pipe I.D. 30 mm
more
Insert
securely
Different
diameter joint
Fig. 3
Tip of drain At least
hose dipped 50 mm
in water gap
Water
Ditch
leakage
Emergency
operation switch
(E.O. SW)