Panasonic CS-HE9PKD / CS-HE12PKD / CU-HE9PKD / CU-HE12PKD Service Manual ▷ View online
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11.3 Outdoor Unit
11.3.1 Install the Outdoor Unit
After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram.
1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).
2 When installing at roof, please consider strong wind and earthquake.
2 When installing at roof, please consider strong wind and earthquake.
Please fasten the installation stand firmly with bolt or nails.
Model A
B
C
D
HE9***
540 mm
160 mm 18.5 mm 330 mm
HE12***
11.3.2 Connect the piping
11.3.2.1 Connecting
the piping to Indoor
Please make flare after inserting flare nut
(locate at joint portion of tube assembly) onto the
copper pipe. (In case of using long piping)
Connect the piping
(locate at joint portion of tube assembly) onto the
copper pipe. (In case of using long piping)
Connect the piping
Align the center of piping and sufficiently tighten the
flare nut with fingers.
Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
11.3.2.2
Connecting the piping to Outdoor
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge.
Make flare after inserting the flare nut (locate at valve)
onto the copper pipe.
Align center of piping to valve and then tighten with
torque wrench to the specified torque as stated in the
table.
Remove burrs from cut edge.
Make flare after inserting the flare nut (locate at valve)
onto the copper pipe.
Align center of piping to valve and then tighten with
torque wrench to the specified torque as stated in the
table.
A
B
C
D
Torque
wrench
wrench
Spanner
or Wrench
or Wrench
Do not overtighten, overtightening may cause gas leakage
Piping size
Torque
6.35 mm (1/4”)
[18 N•m (1.8 kgf.m)]
9.52 mm (3/8”)
[42 N•m (4.3 kgf.m)]
12.7 mm (1/2”)
[55 N•m (5.6 kgf.m)]
15.88 mm (5/8”)
[65 N•m (6.6 kgf.m)]
19.05 mm (3/4”)
[100 N•m (10.2 kgf.m)]
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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.
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.
o
Be sure to connect the end of the charging hose with the push pin to the service port.
2 Connect the center hose of the charging set to a vacuum pump.
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that 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.
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 a torque of 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”
6 Tighten the service port caps of the 3-way valve at a torque of 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 (4 mm).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
o
Be sure to check for gas leakage.
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11.3.4 Connect the cable to the Outdoor Unit
1 Remove the control board cover from the unit
by loosening the screw.
2 Connection cable between indoor unit and
outdoor unit shall be approved
polychloroprene sheathed 4 × 1.5 mm
polychloroprene sheathed 4 × 1.5 mm
2
flexible cord, type designation 60245 IEC 57
or heavier cord. Do not use joint connection
cable. Replace the wire if the existing wire
(from concealed wiring, or otherwise) is too
short.
or heavier cord. Do not use joint connection
cable. Replace the wire if the existing wire
(from concealed wiring, or otherwise) is too
short.
3 Secure the cable onto the control board with
the holder (clamper).
4 Attach the control board cover back to the
original position with screw.
5 For wire stripping and connection requirement,
refer to instruction 11.2.4 of indoor unit.
Earth wire shall be Yellow/Green (Y/G) in colour
and longer than other AC wires for safety reason.
11.3.5 Piping
Insulation
1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation
Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by
using POLY-E FOAM with thickness 6 mm or above.
11.3.5.1 Cutting and flaring the piping
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end
down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
11.3.5.2 Disposal of Outdoor Unit Drain Water
If a drain elbow is used, the unit should be
placed on a stand which is taller than 3 cm.
If the unit is used in an area where
temperature falls below 0°C for 2 or 3 days in
succession, it is recommended not to use a
drain elbow, for the drain water freezes and
the fan will not rotate.
succession, it is recommended not to use a
drain elbow, for the drain water freezes and
the fan will not rotate.
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