CUTTING AND FLARING THE PIPING 2. Connect the center hose of the charging set to a vacuum
pump.
1. Please cut using pipe cutter and then remove the burrs.
3. Turn on the power switch of the vacuum pump and make
2. Remove the burrs by using reamer. If burrsis not
sure that the needle in the gauge moves from 0 cmHg (0
removed, gas leakage may be caused.
MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air
Turn the piping end down to avoid the metal powder
approximately ten minutes.
entering the pipe.
4. Close the valve of both the Low and High sides of the
3. Please make flare after inserting the flare nut onto the
charging set and turn off the vacuum pump. Make sure that
copper pipes.
the needle in the gauge does not move after approximately
five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER
TO AVOID REFRIGERANT GAS LEAKAGE.
5. Disconnect the charging hose from the vacuum pump and
from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at torque of
18 N.m with a torque wrench.
7. Remove the valve caps of both the 3-way valve. Position
both of the valves to ?OPEN? using a hexagonal wrench (4
mm).
8. Mount valve caps both of the 3-way valves.
? Be sure to check for gas leakage.
CAUTION
? If gauge needle does not move from 0 cmHg (0
10.3.4.EVACUA TION OF THE EQUIPMENT
MPa) to -76 cmHg (-0.1 MPa), in step 3 above take
the following measure:
? If the leak stops when the piping connections are
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO
tightened further, continue working from step 3.
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES
? If the leak does not stop when the connections are
in the following procedure.
retightened, repair the location of leak.
If air remains in the indoor unit and refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and could
lead to a malfunction.
10.3.5. CONNECT THECABLE TO THE
OUTDOOR UNIT
(FOR DETAIL REFER TIO W IRING DIAGRAM AT UNIT)
1. Remove the control board cover from the unit by loosening
the screw.
2. Indoor/outdoor connecting cable between indoor unit and
outdoor unit shall be approved polychorprene sheathed 3 �
2
2.5 mmflexible cord 245 IEC 57 (Rubber insulated cable
GP 85PCP or HD 85PCP AS/NZS3191) or heavier cord.
SERVICE PORT CAP
Be sure, using a torque wrench to tighten the service port cap
(after using the service port), so that it prevents the gas
leakage from the refrigeration cycle.
3. Secure the cable onto the control board with the holder
Procedure:(clamper).
1. Connect a charging hose with a push pin to the Low 4. andAttach the control board cover to the original position with
High sides of a charging set and the service port of thethe3-screw.
way valve.
? Be sure to connect the end of the charging hose with the
push pin to the service port. |
ACEC
