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Digital Inverter
Installation Manual
11
EN-21
EN-22
WARNING
Be sure to attach the provided clamp filter to the power
supply wire in order to conform to EMC standards.
Stripping length power cord and connecting
wire
8
EARTHING
WARNING
• Be sure to connect the earth wire. (grounding
work)
Incomplete earthing can cause an electric shock.
Connect the earth line properly following applicable
technical standards.
Connecting the earth line is essential to preventing
electric shock and to reducing noise and electrical
charges on the outdoor unit surface due to the high-
frequency wave generated by the frequency converter
(inverter) in the outdoor unit.
If you touch the charged outdoor unit without an earth
line, you may experience an electric shock.
9
FINISHING
After the refrigerant pipe, inter-unit wires, and drain pipe
have been connected, cover them with finishing tape and
clamp them to the wall with off-the-shelf support brackets
or their equivalent.
Keep the power wires and indoor/outdoor connecting
wires off the valve on the gas side or pipes that have no
heat insulator.
1
2
3
L1 L2 L3 N
Indoor/outdoor
connecting wire
Power supply wire
Earth
screw
Earth
screw
Cord clamp
Cord clamp
Cord
clamp
Cord
clamp
Clamp filter
(accessory)
(mm)
10
30
50
1
10
2 3
10
40
50
10
L1 L2 L3 N
Earth line
Connecting wire
Earth line
Power supply wire
10
TEST RUN
• Turn on the circuit breaker at least 12 hours before starting a test run to protect the compressor during
startup.
To protect the compressor, power is supplied from the 380-415 VAC input to the unit to preheat the compressor.
• Check the following before starting a test run:
•
That all pipes are connected securely without leaks.
•
That the valve is open.
If the compressor is operated with the valve closed, the outdoor unit will become overpressurized, which may
damage the compressor or other components.
If there is a leak at a connection, air can be sucked in and the internal pressure further increases, which may
cause a burst or injury.
• Operate the air conditioner in the correct procedure as specified in the Owner’s Manual.
11
ANNUAL MAINTENANCE
• For an air conditioning system that is operated on a regular basis, cleaning and maintenance of the indoor/outdoor
units are strongly recommended.
As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor/outdoor units will need to be
cleaned at least once every 3 months. This cleaning and maintenance should be carried out by a qualified service
person.
Failure to clean the indoor/outdoor units regularly will result in poor performance, icing, water leaking and even
compressor failure.
12
AIR CONDITIONER OPERATING CONDITIONS
For proper performance, operate the air conditioner under the following temperature conditions:
If air conditioner is used outside of the above conditions, safety protection may work.
Cooling operation
Dry bulb temp.
–15°C to 46°C
Heating operation
Wet bulb temp.
–20°C to 15°C
