20
A5MSX-2009
Application Information
• The table above shows the electrical wire sizing for different connection cables. If the length of the cable is
more than 2m, use cable with bigger size.
• The figures shown in the table are for information purpose only. They should be checked and selected
to comply with the local/national codes of regulations. This is also to the type of installation and
conductors used.
Special Precautions When Dealing With R410A Unit
R410A is a new HFC refrigerant which does not damage the ozone layer. The working pressure of this
new refrigerant is 1.6 times higher than conventional refrigerant (R22), thus proper installation / servicing
is essential.
• Never use refrigerant other than R410A in an air conditioner which designed to operate with R410A.
• POE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for
R22 compressor. During installation or servicing, extra precaution must be taken not to expose the
R410A system too long to moist air. Residual POE oil in the piping and components can absorb moisture
from the air.
• To prevent mischarging, the diameter of the service port on the flare valve is different from that of R22.
• Use tools and materials exclusively for refrigerant R410A. Tools exclusively for R410A are manifold valve,
charging hose, pressure gauge, gas leak detector, flare tools, torque wrench, vacuum pump and refrigerant
cylinder.
• As an R410A air conditioner incurs higher pressure than R22 units, it is essential to choose the
copper pipes correctly. Never use copper pipes thinner than 0.8mm even though they are available in
the market.
• If the refrigerant gas leakage occurs during installation / servicing, be sure to ventilate fully. If the refrigerant
gas comes into contact with fire, a poisonous gas may occur.
• When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigerant
cycle.
Voltage range
220V-240V / 1 Ph / 50Hz +
Power supply cable size (mm
2
)
3.0
Number of wire
3
Interconnection cable size (mm
2
)
Number of wire
Recommended time delay fuse for O/D unit
25
Wire Clamp
Power Supply Cable
Interconnection Cable
A5WMX10G/15G
A5WMX20G/GR
Model
1.5
4
2.5
4
