Mitsubishi Electric M Series Manual page 194

WALL-MOUNTED Inverter Heat Pump
CONNECTING WIRES FOR INDOOR UNIT
You can connect indoor/outdoor lead wire without removing the front panel.
1) Open the front panel.
2) Remove VA clamp.
3) Pass indoor/outdoor unit connecting wire (A) from the back of the indoor
unit and process the end of the wire.
4) Loosen terminal screw, and connect first the earth wire, then indoor/outdoor
unit connecting wire (A) to 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.
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 left claw of the VA clamp. Attach the VA
clamp securely.
Terminal block
15 mm
35 mm
Lead wire
Indoor terminal block
Earth wire (green/yellow)
Indoor/outdoor unit
connecting wire (A)
Outdoor terminal block
• For future servicing, give extra length to the connecting wires.
• Make earth wire a little longer than others. (More than 60 mm)
• 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 to the terminal block.
Note: Do not place the wires between the indoor unit and the installation
plate (1). Damaged wire could cause heat generation or fire.
DRAIN PIPING
Drain Piping
• If the extension drain hose has to pass through a room, be sure to wrap it
with commercially 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)
Down-
Drain hose
ward
slope
Soft hose
I.D. 15 mm
Fig. 1 Fig. 2
Do not make drain piping as shown below.
Do not Accumulated
raise drain water
Air
Water Water
leakage leakage Waving
C-192
VA clamp
Fixing screw
Indoor/outdoor unit
connecting wire (A)
Drain hose
Hard vinyl chloride
70 cm
pipe I.D. 30 mm
or more
Insert
securely
Different
diameter joint
Fig. 3
Tip of drain
At least 50 mm
hose dipped
in water gap
Water
Ditch
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 performed
for 30 minutes. If the left lamp of 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 instructions for details.
Note:
When power (circuit breaker) is turned on, the horizontal vanes automati-
cally move to the normal position.
Checking the remote (infrared) signal reception
Press the ON/OFF button on the remote controller (6) and check that an elec-
tronic 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 device 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 automati-
cally starts operation in the previous setting once the power supply is resumed.
(Refer to the operating instructions 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
Emergency
operation switch
(E.O. SW)