Panasonic CS-E7GKEW / CS-E7GKDW / CS-E9GKEW / CS-E9GKDW / CS-E12GKEW / CS-E12GKDW / CS-E15GKEW / CS-E15GKDW / CS-E18GKEW / CS-E18GKDW / CU-2E15GBE Simplified Service Manual ▷ View online
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12.2.3 Indoor Unit Installation
12.2.3.1
For the right rear piping
12.2.3.2
For the right and right bottom piping
Pull out the Indoor Piping
Install the Indoor Unit
Secure the Indoor Unit
Insert the connecting cable
Pull out the Indoor Piping
Install the Indoor Unit
Insert the connecting cable
Secure the indoor unit
30
12.2.3.3
For the embedded piping
(This can be used for left rear piping & left bottom piping also.)
Replace the drain hose
Bend the embedded piping
Install the Indoor Unit
Cut and flare the
embedded piping
Pull the connecting cable
into indoor unit
Connect the piping
Insulate and finish the
piping
Secure the Indoor Unit
•
Use a spring bender or equivalent to bend the
piping so that the piping is not crushed.
piping so that the piping is not crushed.
•
When determining the dimensions of the piping,
slide the unit all the way to the left on the
installation plate.
slide the unit all the way to the left on the
installation plate.
•
Refer to the section “Cutting and flaring the
piping”.
piping”.
•
The inside and outside connecting cable can be
connected without removing the front grille.
connected without removing the front grille.
•
Please refer to “Connecting the piping” column in
the outdoor unit section (Below steps are done
after connecting the outdoor piping and gas-
leakage confirmation
the outdoor unit section (Below steps are done
after connecting the outdoor piping and gas-
leakage confirmation
•
Please refer to “Piping and finishing” column in the
outdoor section and “Insulation of piping
connections” column as mentioned in
Indoor/Outdoor unit installation.
outdoor section and “Insulation of piping
connections” column as mentioned in
Indoor/Outdoor unit installation.
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12.2.4 Connect the Cable to the Indoor Unit
1. The inside and outside connecting cable can be connected without removing the front grille.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3
(C9GK, C12GK) x 1.5mm
2
flexible cord, type designation 245 IEC 57 or heavier cord.
o
Ensure the color of wires of outdoor unit and the terminal numbers are the same to the indoor’s
respectively.
respectively.
o
Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety
in case of the slipping out of the cord from the anchorage.
in case of the slipping out of the cord from the anchorage.
o
Secure the cable onto the board with the holder (clamper).
12.3 Outdoor Unit
12.3.1 Install the Outdoor Unit
• After selecting the best location, start installation according to indoor/outdoor unit installation diagram.
1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10mm).
2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand
2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand
firmly with bolt or nails.
12.3.2 Connecting the Piping
12.3.2.1 Connecting
the
piping to indoor unit
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
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.
Piping size (Torque)
Model
Gas Liquid
E7GK, E9GK, E12GK
3/8” (42 Nm)
1/4 (18 Nm)
E15GK, E18GK
1/2” (55 Nm)
1/4 (18 Nm)
Terminals on the indoor unit
1
2
3
Color of wires
Terminals on the outdoor unit
1
2
3
1
2
3
570
5.
81
02
3
105
Spanner
or wrench
or wrench
Torque
wrench
wrench
32
1. To cut
Bar
0 - 0.5 mm
Copper pipe
Handle
Bar
Yoke
Core
Red arrow mark
Clamp handle
3. To flare
Pipe
Reamer
Point down
2. To remove burrs
Improper flaring
Uneven
thickness
Inclined Surface
damaged
Cracked
When properly flared, the internal surface
of the flare will evenly shine and be of
even thickness. Since the flare part
comes into contact with the connections,
carefully check the flare finish.
of the flare will evenly shine and be of
even thickness. Since the flare part
comes into contact with the connections,
carefully check the flare finish.
Lo
OPEN
Vacuum pump adaptor
Vacuum
pump
GAS SIDE
Liquid side
Indoor unit
GAS SIDE
Liquid side
Indoor unit
Hi
CLOSE
THREE-WAY VALVE
THREE-WAY VALVE
THREE-WAY VALVE
THREE-WAY VALVE
Outdoor unit
12.3.2.2
Connecting the piping to outdoor unit
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 valves and then tighten with torque wrench
to the specified torque as stated in the table.
flare nut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench
to the specified torque as stated in the table.
12.3.2.3
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 are not removed, gas leakage may be caused. Turn the piping
2. Remove the burrs by using reamer. If burrs are 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.
12.3.3 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.
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.
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.
charging hose with the push pin to the
service port.
2. Connect the center hose of the charging
hose of the charging set to a vacuum pump.
3. Turn on the power witch of the vacuum pump
and make sure that the needle in the gauge
moves from 0cmHg (0MPa) to -76cmHg (-
0.1MPa). Then evacuate the air
approximately ten minutes.
moves from 0cmHg (0MPa) to -76cmHg (-
0.1MPa). 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 FOLLOW THIS
PROCEDURE IN ORDER TO AVOID
REFRIGERANT GAS LEAKAGE.
that the needle in the gauge does not move
after approximately five minutes.
Note: BE SURE TO FOLLOW 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.
the 3-way valve.
6. Tighten the service port caps of the 3-way
valve at torque of 18N.m. with a torque
wrench.
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
(4mm).
valves to “OPEN” using a hexagonal wrench
(4mm).
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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