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9.4.2.
Connection of piping
41
Remove the indoor piping
Pull the tube out of chassis.
For the right piping
1. Pull the tube out of chassis.
2. Insert the tube and drain hose into the hole.
3. Insert the connecting cable into the indoor unit
through the hole.
Do not connect the unit to power supply.
Make a small loop with the cable for easy
connection later.
Make a small loop with the cable for easy
connection later.
4. Tape the tube,drain hose and cable.
Indoor/Outdoor
Connecting cable
Connecting cable
Indoor/Outdoor
Connecting cable
Connecting cable
Gas side piping
Liquid side piping
Drain hose
Connecting
cable
cable
5. Indoor unit installation
Hook the indoor unit onto the upper portion of
installation plate. (Engage the two hooks of the rear
top of the indoor unit with the upper edge of the
installation plate.)
Ensure the hooks are properly seated on the installation
plate by moving it left and right.
Drain hose
Connecting cable
Press the lower left and right side of the unit against the
installation plate until the hooks engages with their slots
(sound clicks)
6. Connecting the piping to the indoor unit
• Align the center of the piping and sufficiently tighten the
flare nut with fingers.
• Finally, tighten the flare nut with torque wrench until the
wrench clicks.
When tightening the flare nut with torque wrench,
ensure the direction for tightening follows arrow on the
wrench.
Model
Piping side
Torque
Liquid side 1 4"
Gas side 3/8”
/
18N.m
42N.m
PA7DKD
PA9DKD
Fig.12
Fig.13
Fig.14
Fig.15
PC7DKD
PC9DKD
PC9DKD
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
Indoor unit piping
Flare Nut Pipings
Spanner or
wrench
wrench
Torque wrench
Cap
Cap
Drain hose
For the left piping
1. Route the indoor tubing with the drain hose to the
hole.
Pull out the drain hose.
Exchange the hose and cap.
Exchange the hose and cap.
2. Insert the piping and connecting cable to indoor side
through the hole.
Outdoor
Piping
Indoor Connecting cable
42
3. Insert the connecting cable into the indoor unit
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection.
Fig.16
Fig.17
Fig.18
Fig.19
Gas side piping
Liquid side piping
Connecting cable
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
4. Indoor unit installation
• Hook the indoor unit onto the upper portion of
installation plate. (Engage the two hooks of the rear top
of the indoor unit with the upper edge of the installation
plate.)
• Ensure the hooks are properly seated on the installation
plate by moving it left and right.
5. Connecting the piping to the indoor unit
• Align the center of the piping and sufficiently tighten the
flare nut with fingers.
• Finally, tighten the flare nut with torque wrench until the
wrench clicks.
When tightening the flare nut with torque wrench,
ensure the direction for tightening follows arrow on the
wrench.
Model
Piping side
Torque
Liquid side 1
4"
Gas side 3/8”
18N.m
42N.m
6. Set the piping and the connecting cable to the back of
chassis with the clamping cover.
7. Tape the piping, drain hose and connecting cable.
43
Fig.21
Fig.22
Fig.23
Fig.24
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
PA7DKD
PA9DKD
PC7DKD
PC9DKD
PA9DKD
PC7DKD
PC9DKD
Piping
Drain hose
Sleeve for
piping hole
Hook at
installation plate
installation plate
Drain hose
Piping
Tape
Indoor unit piping
Flare Nut
Pipings
Spanner or
wrench
wrench
Torque wrench
A
B
44
9.5.
In case of embedded Piping
For the embedded piping
Follow the same procedure for left rear and left piping.
9.5.1. Replace the drain hose
Replace the drain hose and drain cap.
Figure from the back of the indoor unit after
Figure from the back of the indoor unit after
installation.
(For the left and left rear piping)
Drain cap
Drain hose
9.5.2. Bend the embedded piping
•
Use a spring bender or equivalent to bend the piping so
that the piping is not crushed.
Connecting
cable
Connecting
cable
Drain
hose
Drain
hose
Slightly pull down the drain hose
Slightly pull down the drain hose
9.5.3. Install the indoor unit.
9.5.4. Cut and flaring the embedded
piping
9.5.5. Pull the connecting cable into the
indoor unit.
• When determining the dimensions of the piping, slide the
unit all the way to the left on the installation plate.
• Refer to the section “cut and flaring the piping” in the
directions for the outdoor unit. (Refer page 40)
9.5.6. Connecting the piping
• Refer to the section "connecting the piping" in the directions
for the indoor unit.
(Connecting the piping to the outdoor unit and checking the
gas leakage.)
In case of the embedded piping.
How to pull the piping and drain hose out.
Sealed with putty or
caulking compound
PVC tube for drain hose
PVC tube for
drain hose
drain hose
PVC tube for
drain hose
drain hose
PVC tube for drain hose
(Be sure to insulate the
PVC tube for drain hose)
(Be sure to insulate the
PVC tube for drain hose)
Drain hose from
main unit
main unit
Indoor unit
Connecting cable
Piping
9.5.8. Install the indoor unit fixly.
[REFERENCE Fig.28, Fig.29]
For left side piping,how to insert the connecting cable and drain hose
Drain hose
Piping
Connecting cable
(Same as the directions for right
side piping)
Fig.25
Fig.26
Fig.27
Fig.28
Fig.29
More
than
95cm
5.5cm
More
than
30cm
More
than
70cm
Piping
Connecting
cable
9.5.7. Connecting the cable to the indoor
unit
• The cable can be connected without removing the front
grille.
Insert the piping
through the sleeve
through the sleeve
Drain hose
Piping
About 95cm or a bove
Connecting cable
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
45
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