1-18
Attach insulation sleeve
Round crimp-style terminal
Electric wire
Connect wires of the
same gauge to both side.
Do not connect wires of the
same gauge to one side.
Do not connect wires
of different gauges.
All wires must be
Þ
rmly connected.
Make sure all the wire do not touch the refrigerant pipings, compressor or any moving parts.
The connecting wire between the indoor unit and the outdoor unit must be clamped by using provided cord anchorage.
The power supply cord must be equivalent to H07RN-F which is the minimum requirement.
Make sure no external pressure is applied to the terminal connectors and wires.
Make sure all the covers are properly
Þ
xed to avoid any gap.
Use round crimp-style terminal for connecting wires to the power supply terminal block. Connect the wires by matching
to the indication on terminal block. (Refer to the wiring diagram attached on the unit).
•
•
•
•
•
•
•
Use the correct screwdriver for terminal screws tightening. Unsuitable screwdrivers can damage the screw head.
Over tightening can damage the terminal screw.
Do not connect wire of different gauge to same terminal.
Keep wiring in an orderly manner. Prevent the wiring from obstructing other parts and the terminal box cover.
•
•
•
•
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 or PVE 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 or PVE oil in the piping and
components can absorb moisture from the air.
To prevent mischarging, the diameter of the service port on
the
ß
are 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,
ß
are 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
Þ
re, a poisonous gas may occur.
When installing or removing an air conditioner, do not allow
air or moisture to remain in the refrigerant cycle.
•
•
•
•
SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT
Vacuuming is necessary to eliminate all moisture and air from the system.
Vacuuming The Piping And The Indoor Unit
The indoor unit and the refrigerant connection pipes must
be air-purged because the air containing moisture that
remains in the refrigerant cycle may cause malfunction of
the compressor.
Remove the caps from the valve and the service port.
Connect the center of the charging gauge to the vacuum
pump.
Connect the charging gauge to the service port of the 3-
way valve.
•
•
•
VACUUMING AND CHARGING
Start the vacuum pump. Evacuate for approximately
30 minutes. The evacuation time varies with different
vacuum pump capacity. Con
Þ
rm that the charging gauge
needle has moved towards -760mmHg.
Caution
If the gauge needle does not move to -760mmHg, be sure to
check for gas leaks (using the refrigerant detector) at
ß
are
type connection of the indoor and outdoor unit and repair
the leak before proceeding to the next step.
Close the valve of the changing gauge and stop the vacuum
pump.
•
•
•
Summary of Contents for AHQ100AV1
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