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Step to connect the installation wire:
•
Used the correct screwdriver for tightening the terminal screws. If the block is too small, the mad of the screw might be
damaged and the screw will not be properly tightened. If tightening too hard, screw might be damaged.
•
Do not connect wire at different gauge to the same proper supply terminal.
•
Use specified electric wire. Connect the wire securely to the terminal. Lock the wire down without applying excessive
force to the terminal.
•
Keep wiring in mat order and not to obstruct other equipment such as popping open the terminal box lid.
Connect wires of the
same gauge to both
side.
Vacuuming is necessary to eliminate all moisture and air
from the system. The series II Outdoor Unit is provided with
flare valve fittings.
Vacuuming for indoor unit
Before vacuuming, perform leak check for refrigeration
circuit. After the system piping are properly connected,
connect the flexible hoses to the correct charging nipples as
shown in the diagram. Ensure that flexible hose from
charging nipples are connected to the vacuum pump via
standard servicing valves and pressure gauges (gauge
manifold). Vacuum the air conditioner system to at least 500
microns Hg. Do not start the unit when the system is engaged
in vacuuming. The outdoor is pre-charge.
Purging The Piping And The Indoor Unit
Except for the outdoor unit which is pre-charged with
refrigerant, 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.
•
Start the vacuum pump. Evacuate for approximately 30
minutes. The evacuation time varies with different
vacuum pump capacity. Confirm that the charging gauge
needle has moved towards -76mmHg (0~76mmHg).
Attach insulation sleeve
Round crimp-style terminal
Do not connect wires
of the same gauge to
one side.
VACUUMING AND CHARGING
1-13
Electric wire
Do not connect wires
of different gauges.
Caution
•
If the gauge needle does not move to 0~76mmHg, be
sure to check for gas leaks (using the refrigerant
detector) at flare 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.
•
On the outdoor unit, open the suction valve (3 way) and
liquid valve (2 way) (in anti-clockwise direction) with
4mm key for hexagon sacked screw.
Allen Key
Service Port
Liquid Side
Indoor Unit
Gas Side
Open
Vacuum
Hi
Pump
Low
Close
Refrigerant Piping
Flare Nut
Outdoor Unit
3 Ways Valve
Outdoor Unit
Discharge Valve
Close
Suction Valve
Close
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