Mitsubishi Electric M Series Manual page 266

FLOOR-STANDING Inverter Heat Pump
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)
• When routing the drain piping, make sure that the drain hose (1) is routed as shown. (Fig. 4)
• Insert the drain hose all the way to the base of the drain pan (end connection). (Fig. 5)
Make sure that the catch of the drain hose is securely hooked onto the projection on the hose fitting of the drain pan.
• After connecting the drain hose, be sure to pull the hose to confirm that it is connected securely.
Drain
hose
Downward
slope
Soft hose
I.D. 15 mm
Fig. 1 Fig. 2
Do not make drain piping as shown below.
Accumulated
Do not raise
drain water
Water Water
Waving
leakage leakage
FRONT PANEL INSTALLATION
1) Open the horizontal vane for the upper air outlet.
2) Fit the front panel onto the indoor unit from the front, and then push
the upper and lower areas that are marked with arrows.
3) Push the areas below the upper air outlet and the areas above and
below the lower air outlet that are marked with arrows.
4) After installing the front panel, install the 2 screws below the upper
air outlet.
TEST RUN
Make sure the following is done.
• The area around the damper is free of any objects, and the movement of the damper is not blocked.
• Panel is installed correctly.
• Indoor and outdoor units are installed correctly, and power is supplied.
1) 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.
2) To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating in-
structions for details.
Checking the remote (infrared) signal reception
Press the ON/OFF button on the remote controller (12) 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 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 do-
ing 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.
C-264
Drain hose
Hard vinyl chloride
70 cm or
pipe I.D. 30 mm
more
Insert
securely
Different
diameter joint
Fig. 3
Tip of drain
hose dipped
Air
in water
Water
Ditch
leakage
Fig. 4
Make sure to hook the catch.
At least
50 mm
gap
Fig. 5
M series
The catch should face up.
Drain hose
Pull the hose to confirm
it is connected securely.
Projection
* This projection is located behind the
hose fitting when viewing the fitting
from the front of the unit.
Emergency
operation switch
(E.O. SW)