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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.
Be sure to check for gas leakage.
o
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 .
-
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.
Connect the UL listed or CSA approved
o
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.
Indoor unit
Vacuum
pump
Liquid side
Two-way valve
Outdoor unit
Close
Gas side
Three-way valve
Close
Connecting wires
Front
Panel
Particular
Plate
Lock Nuts
Knockout
Holes
27
Control Board
Cover (Metal)
Control Board
Cover (Resin)
Plugs
Connectors
Particular Plate
Opening hole
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