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11.2.4 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
3
.
-
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.
11.2.5 Connect the Cable to the Outdoor Unit
1 Remove control board cover (Plastic and Metal), follow by particular plate (for E18*** model).
2 Remove top panel, follow by Control Board Cover (Plastic and Metal) (for E12*** model).
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 (for E12***) and AWG12 (for E18***) 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
Outdoor unit
Liquid side
Gas side
Vacuum
pump
Two-way valve
Three-way valve
Close
Close
Outdoor Unit
1
2
3
1
2
L1
L2
3
l
a
n
i
m
r
e
T
l
a
n
i
m
r
e
T
Indoor Unit
Disconnect
Switch
Field supply
Grounding wire
Grounding wire min AWG16
* The wires between the indoor and
outdoor unit can be installed in the
same conduit but the power supply
for the outdoor unit must be in a
separate conduit to prevent potential
communication problems.
Power Supply Single
Phase 208/230V 60Hz
min AWG14 (for E12***)
and AWG12 (for E18***)
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
