-
93
-
'17 • SCM-T-225
14.
INST
ALLING TWO
AIR-CONDITIONERS IN THE SAME ROOM
15. PUMP
DOWN WORK
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.
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 connect
-
ing pipes are removed from the unit. When pump down is carried out, forced cooling operation is needed.
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.
Cut
Setting one indoor unit
(1)
Turn of
f 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 left side.
(3) Check that the reception buzzer sound “Pii”
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.
Reception
Pi
i
TIME
SE
TUP
ACL
Forced cooling operation
(1)
Turn of
f the power source and turn it on
again after 1 miniute.
(2) Press the ON/OFF button continuously for at
least 5 seconds.
Then operation will start.
For the detail of pump down, refer to the instal
-
lation manual of outdoor unit.
Unit ON/OFF butto
n
16. INST
ALLA
TION CHECK
AND TEST RUN
After
finishing
the
installation
work,
check
the
following
points
again
before
turning
on
the
power
. Conduct
a
test
run
and
ensure
that
the
unit
operates
properly
.
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.
Power
cable
and
connecting
cable
are
securely
fixed
to
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 lid is tightened securely
.
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.
W
ater drains out smoothly
.
Display of wiless 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.
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.
