Refrigerant Piping Work; Indoor Unit Installation - Panasonic CS-20UMHPP Installations- Und Bedienungsanleitung

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NSTALLATION PROCEDURES FOR FRESH AIR
INTAKE DUCT CONNECTION
1. Preparing the connection hole
• Cut off the knockout hole on the side plate with a nipper.
• Cut the inner insulation of the hole portion with a cutter.
1 Piping
2 Drain pipe
3 Side plate
4 Inner insulation
5 Slit
Placing the insulation (See figure 11).
2.
• Put the insulation tightly around the hole of the unit as shown.
The ends of the side plate and the inner insulation must be
completely adhered without leaving any clearance along the
circumference of the hole.
Make sure the inner surface of insulation tightly contacts the
inner insulation edge and the side plate.
1 Insulation (field supply)
2 Side plate
3 Inner insulation
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NDOOR UNIT INSTALLATION
When installing optional accessories (except for the decoration
panel), read also the installation manual of the optional accessories.
Depending on the field conditions, it may be easier to install optional
accessories before the indoor unit is installed. However, for existing
ceilings, install fresh air inlet component kit and branch duct before
installing the unit.
1. Install the indoor unit temporarily.
• Attach the hanger bracket to the suspension bolt. Be sure to fix it
securely by using a nut and washer from the upper and lower
sides of the hanger bracket.
Securing the hanger bracket see
Nut (field supplied)
1
2 Washer (supplied with the unit)
3 Hanger bracket
4 Tighten (double nut)
2. Fix the paper pattern for installation. (For new ceilings
only.)
• The paper pattern for installation corresponds with the measure-
ments of the ceiling opening. Consult the builder for details.
• The centre of the ceiling opening is indicated on the paper
pattern for installation. The centre of the unit is indicated on the
unit casing and on the paper pattern for installation.
• After removing the packaging material from the paper pattern for
installation, attach the paper pattern for installation to the unit
with the attached screws as shown in
1 Height adjustment of the unit
Ceiling material
2
Lower surface of ceiling
3
4 Installation of paper pattern for installation (supplied with the unit)
5 Centre of the ceiling opening
6 Centre of the unit
7 Paper pattern for installation
8 Screws (supplied with the unit)
• The ceiling height is shown on the side of the paper pattern for
installation. Adjust the height of the unit according to this
indication.
CS-20~125UMHPP
Urban Multi air conditioner
4PW12338-1A
(See figure 10)
.
figure 6
.
figure 7
.
3. Adjust the unit to the right position for installation.
Preparations before installation
(Refer to the chapter "
4. Check if the unit is horizontally levelled.
• Do not install the unit tilted. The indoor unit is equipped with a
built-in drain pump and float switch.
(If the unit is tilted against condensate flow, the float switch may
malfunction and cause water to drip.)
• Check if the unit is levelled at all four corners with a water level or
a water-filled vinyl tube as shown in figure 15.
1 Water level
2 Vinyl tube
5. Remove the paper pattern for installation. (For new ceilings
only.)
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EFRIGERANT PIPING WORK
For refrigerant piping of outdoor unit, refer to the installation manual
supplied with the outdoor unit.
Execute heat insulation work completely on both sides of the gas
piping and the liquid piping. Otherwise, this can sometimes result in
water leakage.
Before rigging tubes, check which type of refrigerant is used.
All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and
national codes.
Use a pipe cutter and flare suitable for the used refrigerant.
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Apply ether oil or ester oil around the flare portions before
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connecting.
I To prevent dust, moisture or other foreign matter from infiltrating
the tube, either pinch the end, or cover it with tape.
Use copper alloy seamless pipes (ISO 1337).
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The outdoor unit is charged with refrigerant.
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Be sure to use both a spanner and torque wrench together when
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connecting or disconnecting pipes to/from the unit.
1 Torque wrench
2 Spanner
3 Piping union
4 Flare nut
Do not mix anything other than the specified refrigerant, such as
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air, etc.., inside the refrigerant circuit.
Refer to Table 1 for the dimensions of flare nut spaces and the
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appropriate tightening torque. (Overtightening may damage the
flare and cause leaks.)
Table 1
Pipe gauge Tightening torque
14.2~17.2 N•m
Ø6.4
(144~176 kgf•cm)
32.7~39.9 N•m
Ø9.5
(333~407 kgf•cm)
49.5~60.3 N•m
Ø12.7
(504~616 kgf•cm)
61.8~75.4 N•m
Ø15.9
(630~770 kgf•cm)
97.2~118.6 N•m
Ø19.1
(990~1210 kgf•cm)
".)
1
3
4
Flare dimension A
(mm) Flare shape
8.3~8.7
90° ±0.5
12.0~12.4
A
15.4~15.8
R0.4~0.8
18.6~19.0
22.9~23.3
Installation and operation manual
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