Mitsubishi SRK20ZSX-W Technical Manual page 57

10. HOW TO OPEN, CLOSE, REMOVE AND INSTALL
THE AIR INLET PANEL
1. Open
Pull the air inlet panel at both ends of lower part
and release latches, then pull up the panel until
you feel resistance.
(The panel stops at approx. 60° open position)
2. Close
Hold the panel at both ends of lower part, lower
it downward slowly, then push it slightly until the
latch works.
3. Removing
Open the panel by 80° (as shown in the right
illustration) and then pull it forward.
4. Installing
Insert the panel arm into the slot on the front
panel from the position shown in right illustration,
hold the panel at both ends of lower part, lower
it downward slowly, then push it slightly until the
latch works.
NOTE
• When carrying out maintenance, handle the air
inlet panel with care.
11. HOW TO REMOVE AND INSTALL THE SIDE AND
FRONT PANEL
1. Side panel (R/L)
1.1. Removing
(1) Remove the 2 screws.
(2) Remove the 3 latches and then side panel
can be removed.
1.2. Installing
latches.
(2) Secure the side panel with the 2 screws.
<Top view>
Latch
Front panel
Screw
Side panel (L)
Latches
Side panel (L)
Screw (Front panel)
12. INSTALLING WIRELESS REMOTE CONTROL
Mount the batteries
(1) Slide and take out the cover of backside.
(2) Mount the batteries [R03 (AAA, Micro),
×2 pieces] in the body properly.
(Fit he poles with the indication marks + & −)
(3) Set the cover again.
NOTE
• Do not use new and old batteries together.
• In case the unit is not operated for a long time,
take out the batteries
Battery
Cover
16. INSTALLATION CHECK AND TEST RUN
At the same time, explain to the customer how to use the unit and how to take care of the unit following the user's manual.
Before test run
Before test run, check following points.
Power source voltage complies with the rated voltage of
air-conditioner.
Earth leakage breaker and circuit breaker are installed.
the terminal block.
Both liquid and gas service valves are fully open.
No gas leaks from the joints of the service valves.
Indoor and outdoor side pipe joints have been insulated.
Hole on the wall is completely sealed with putty.
Drain hose and cap are installed properly.
Screw of the terminal cover is tightened securely.
Air inlet panel
Approx. 80°
Panel arm
2. Front panel
2.1. Removing
(1) Remove the side panel (R/L), the air inlet
(2) Remove the 3 screws.
(3) Remove the 4 upper latches and then front
panel can be removed.
2.2. Installing
upper latches.
(2) Secure the front panel with the 3 screws.
(3) Install the bottom panel, the side panel
Screw
Side panel (R)
Latches
Side panel (R)
Bottom panel
Installing remote control holder
(1) Select the place where the unit can receive
signals.
(2) Fix the holder to pillar or wall with wood
screws.
Wireless remote control
Wood screws
ø3.5 X 16
. Conduct a test run and ensure that the unit operates properly.
Test run
Check following points during test run.
Indoor unit receives signal of wireless remote control.
Air-conditioning operation is normal.
There is no abnormal noise.
Water drains out smoothly.
Display of wireless remote control is normal.
After test run
Explain the operating and maintenance methods to the
user according to the user's manual.
Keep this installation manual together with user's
manual.
13. INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM
In case two air-conditioners are installed in the same room, apply this setting so that one unit can be
operated with only one wireless remote control.
Setting one wireless remote control
(1) Slide and take out the cover and batteries.
(2) Cut the switching line next to the battery with
wire cutters.
(3) Set the batteries and cover again.
Setting one indoor unit
(1) Turn off the power source and turn it on after 1
minute.
(2) Send the signal by pressing the ACL switch on
the wireless remote control that was set according
to the procedure described on the above side.
(3) Check that the reception buzzer sound "Peep"
is emitted from the indoor unit. Since the signal
is sent about 6 seconds after the ACL switch is
pressed, point the wireless remote control to the
indoor unit for a while.
NOTE
If no reception buzzer is emitted, restart the setting
from the beginning.
14. TERMINAL CONNECTION FOR AN INTERFACE
To install wired remote control, superlink etc., interface kit is needed.
(1) Remove the air inlet panel, bottom panel
and side panel (R).
(2) Remove the control cover. (Remove the
screw.)
(3) There is a terminal (respectively marked
with CNS) for the indoor control board.
While connecting an interface, connect
to the respective terminal securely with
the connection harness supplied with
an option "Interface kit SC-BIKN-E and
SC-BIKN2-E" and fasten
the connection harness onto the indoor
control box with the clamp and screw
supplied with the kit.
(4)
latches on side panel (L).
For more details, refer to the user's
manual of "Interface kit SC-BIKN-E and
SC-BIKN2-E".
Pass the interface kit
cable through here.
15. PUMP DOWN WORK
For the environmental protection, be sure to pump down when relocating or disposing of the unit.
Pump down is the method of recovering refrigerant from the indoor unit to the outdoor unit before the
connecting pipes are removed from the unit. When pump down is carried out, forced cooling opera-
tion is needed.
Forced cooling operation
(1) Turn off the power source and turn it on
again after 1 minute. The air inlet panel
(2) After the air inlet panel closes, press the
ON/OFF button continuously for at least 5
seconds. Then operation will start.
For the detail of pump down, refer to the
installation manual of outdoor unit.
55
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'18 • SRK-T-234
Reception
<Right side>
Indoor unit PCB
Control cover
Screw
CNS terminal
Interface kit
Side panel (L)
Unit ON/OFF button
NOTE
During restart or change in operation mode, the unit will not start
operating for approximately 3 minutes. This is to protect the unit
and it is not malfunction.
Cut
Peep
Fixing point of
the clamp
Latch
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