Panasonic CS-TZ20TKEW / CS-TZ25TKEW / CS-TZ35TKEW / CS-TZ42TKEW / CS-MTZ16TKE / CU-TZ20TKE / CU-TZ25TKE / CU-TZ35TKE / CU-TZ42TKE Service Manual ▷ View online
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12.2.3 Indoor Unit Installation
● Do not turn over the unit without it’s shock absorber during pull out the piping.
It may cause intake grille damage.
● Use shock absorber during pull out the piping to protect the intake grille from damage.
Piping
Intake grille
Shock absorber
Piping
pull out
the p
ipin
g
pull o
ut th
e p
ipin
g
12.2.3.1
For the Right Rear Piping
Install the Indoor Unit
Pull out the Indoor piping
Step-2
Secure the Indoor Unit
Insert the connection cable
Step-1
Step-3
Step-4
12.2.3.2
For the Right and Right
Bottom Piping
Install the Indoor Unit
Pull out the Indoor piping
Step-2
Insert the connection cable
Secure the Indoor Unit
Step-1
Step-3
Step-4
12.2.3.3
For the Embedded Piping
• Use a spring bender or equivalent to bend the piping so that the piping is not
crushed.
crushed.
• When determining the dimensions of the piping, slide the unit all the way to the
left on the installation plate.
• Refer to the section “Cutting and flaring the piping”.
left on the installation plate.
• Refer to the section “Cutting and flaring the piping”.
Bend the embedded piping
Cut and flare the embedded piping
Replace the drain hose
Pull the connection cable into Indoor Unit
• The inside and outside connection cable can be connected without removing
the front grille.
the front grille.
Step-1
Step-2
Step-3
Step-4
• Please refer to “Connecting the piping” column in outdoor unit section.
(Below steps are done after connecting the outdoor piping and gas-leakage
confirmation.)
(Below steps are done after connecting the outdoor piping and gas-leakage
confirmation.)
Connect the piping
• Please refer to “Insulation of piping connection” column as mentioned in
indoor/outdoor unit installation.
indoor/outdoor unit installation.
Install the Indoor Unit
Secure the Indoor Unit
Insulate and finish the piping
Step-5
Step-6
Step-7
Step-8
Right Rear piping
How to keep the cover
In case of the cover is cut, keep the cover at the rear
of chassis as shown in the illustration for future
reinstallation.
(Left, right and 2 bottom covers for piping.)
of chassis as shown in the illustration for future
reinstallation.
(Left, right and 2 bottom covers for piping.)
Install the indoor unit
Hook the indoor unit onto the upper
portion of installation plate. (Engage
the indoor unit with the upper edge
of the installation plate). Ensure the
hooks are properly seated on the
installation plate by moving it in left
and right.
portion of installation plate. (Engage
the indoor unit with the upper edge
of the installation plate). Ensure the
hooks are properly seated on the
installation plate by moving it in left
and right.
Secure the Indoor Unit
Right and Right Bottom piping
Insert the connection cable
Press the lower left and right side of the unit
against the installation plate until hooks
engages with their slot (sound click).
against the installation plate until hooks
engages with their slot (sound click).
Cover for the
bottom piping
bottom piping
Cover for the
bottom piping
bottom piping
Tape it with piping in a
position as mentioned in
Fig. below.
Cover for
the right
piping
the right
piping
Piping
Drain
hose
hose
Cover for
the left
piping
the left
piping
Cover for
the bottom
piping
the bottom
piping
Tape it with piping in a
position as mentioned in
Fig. below.
Cover for the
right piping
right piping
Piping
Drain hose
Cover for
the left
piping
the left
piping
Drain hose
Sleeve for
piping hole
piping hole
Indoor unit
Hooks at
installation
plate
installation
plate
Piping
Cover for piping
Guide
surface
surface
Connection
cable
cable
About
70 – 80 mm
Connection cable
Gas side piping
Liquid side piping
Drain hose
Installation
plate
plate
Unit’s hook
To take out the unit, push the
marking at
the bottom unit, and pull it slightly towards you to
disengage the hooks from the unit.
disengage the hooks from the unit.
g
n
i
k
r
a
m
(This can be used for left rear piping and left bottom
piping also.)
46
•
How to pull the piping and drain hose out, in case of the
embedded piping.
embedded piping.
•
In case of left piping how to insert the
connection cable and drain hose.
connection cable and drain hose.
Rear view for left piping installation
Adjust the piping slightly
downwards.
downwards.
Drain hose
Connection cable
Exchange the drain hose and
the cap
the cap
(For the right piping, follow the same procedure)
Drain cap
Drain hose
PVC tube for
drain hose
drain hose
Indoor unit
55mm (1/2 ~ 1.75Hp) or
80mm (2.0 ~ 2.5Hp)
Piping
Cable
Apply putty or
caulking material
to seal the wall
opening.
caulking material
to seal the wall
opening.
Connection cable
Piping
More than
470 mm
More than 950mm
(1/2 ~ 1.75Hp) or
1150mm (2.0 ~ 2.5Hp)
PVC tube (VP-65) for piping and
connection cable
connection cable
PVC tube for drain hose (VP-30)
PVC tube for
drain hose (VP-20)
drain hose (VP-20)
More than 700 mm
Drain hose
from main unit
from main unit
Cable
45°
Drain hose
Piping
Sleeve for piping hole
Drain hose
Piping
Connection cable
More than 950mm
(1/2 ~ 1.75Hp) or
1150mm (2.0 ~ 2.5Hp)
(1/2 ~ 1.75Hp) or
1150mm (2.0 ~ 2.5Hp)
12.2.4 Connect the Cable to the Indoor Unit
1 The inside and outside connection cable can be connected without removing the front grille.
2 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed
2 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed
4 x 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. Allowable connection
cable length of each indoor unit shall be 30 m or less.
cable length of each indoor unit shall be 30 m or less.
3 Bind all the indoor and outdoor connection cable with tape and route the connection cable via the
escapement.
4 Remove the tapes and connect the connection cable between indoor unit and outdoor unit according to the
diagram below.
Terminals on the outdoor unit
L
N
1
2
3
Colour of wires
Terminals on the indoor unit
1
2
3
47
5 Secure the connection cable onto the control board with the holder.
o
Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s
respectively.
respectively.
o
Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
Connection cable
Indoor & outdoor
connection cable
Escapement
Terminal Board
Recommended
length (mm)
Earth Wire
longer than
others AC
wires for
safety reason
longer than
others AC
wires for
safety reason
Holder
Indoor & outdoor
connection cable
connection cable
Outdoor unit
Tape
Recommended
length (mm)
length (mm)
a
b
c
d
35
35
35 55
WARNING
This equipment must be properly earthed.
12.2.4.1 Wire Stripping Connecting and Requirement
WARNING
OR
Use complete wire
without joining.
Use approved socket
and plug with earth pin.
Wire connection in this
area must follow to
national wiring rules.
national wiring rules.
Wire stripping
No loose strand
when inserted
when inserted
10 ± 1 mm
RISK OF FIRE
JOINING OF WIRES
MAY CAUSE
OVERHEATING AND
FIRE.
MAY CAUSE
OVERHEATING AND
FIRE.
5 mm or more
(gap between wires)
Indoor/outdoor
connection
terminal board
connection
terminal board
Do not joint wires
OR
OR
Conductor
fully inserted
Conductor over
inserted
Conductor not
fully inserted
ACCEPT
PROHIBITED
PROHIBITED
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12.3 Outdoor Unit
12.3.1 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, screws or nails.
A
B
C
D
Model A
B
C
D
TZ20***, TZ25***, TZ35*** 570 mm 105 mm 18.5 mm 320 mm
TZ42***
TZ42***
540 mm 160 mm 18.5 mm 330 mm
12.3.2 Connect the Piping
12.3.2.1 Connecting
the Piping to Indoor
For connection joint location at outside building of all
model (except R32 model)
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
model (except R32 model)
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
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.
Torque
wrench
wrench
Spanner or
Wrench
Wrench
For connection joint location at inside building for R32
model only
model only
Decide the length.
Cut and remove the tube connectors at indoor
copper pipings (both gas and liquid piping) by
using pipe cutter. Remove burrs from cut edge.
using pipe cutter. Remove burrs from cut edge.
Use pipe expander to expand the end of long
piping.
Align the center of piping and braze the piping
joints.
Indoor
copper pipe
copper pipe
Tube connector
(40~50mm)
Brazing point
1. Cut and
Remove
2. Expand long
pipe
3. Braze both
pipe
12.3.2.2 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.
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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