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11.3.3 Evacuation of the Equipment
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND
PIPES in the following procedure.
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
2 Connect the micron gauge between vacuum pump and service port of outdoor units.
3 Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull
down to a value of 500 microns.
4 To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off
the vacuum pump.
5 Disconnect the vacuum pump house from the service port of the 3-way valve.
6 Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf.ft (18 N•m) with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open”
using a hexagonal wrench (5/32" (4 mm)).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
o Be sure to check for gas leakage.
If micron gauge value does not descend 500 microns, take the following measures:
- If the leak stops when the piping connections are tightened further, continue working from step e.
- If the leak does not stop when the connections are retightened, repair location of leak.
- Do not release refrigerant during piping work for installation and reinstallation.
- Be careful with the liquid refrigerant, it may cause frostbite.
11.3.4 Connect the Cable to the Outdoor Unit
1 Remove control board cover (Resin and
Metal).
2 Remove particular plate.
3 Remove plugs.
4 Fix the conduit connectors to the knockout
holes with lock-nuts, then secure them against
the side panel.
5 All wires pass through conduits & particular
plate’s opening hole.
6 Connecting wire between indoor unit and
outdoor unit should be UL listed or CSA
approved 4 conductor wires minimum AWG16
in accordance with local electric codes.
7 Wire connection to the power supply
(208/230V 60Hz) through circuit breaker.
o Connect the UL listed or CSA approved
wires minimum AWG14 to the terminal
board, and connect the other end of the
wires to ELCB/ GFCI.
8 Connect the power supply cord and
connecting wire between indoor unit and
outdoor unit according to the diagram below.