Selecting Installation Site; Preparations Before Installation; Indoor Unit Installation; Refrigerant Piping Work - Panasonic CS-20NM1HPP Manuel D'installation

Notes to the installer
I Read this manual carefully to ensure correct installation. Be sure
to instruct the customer how to properly operate the system and
show him/her the enclosed operation manual.
Explain to the customer what system is installed on the site. Be
I
sure to fill out the appropriate installation specifications in the
chapter "What to do before operation" of the outdoor unit
operation manual.
S
ELECTING INSTALLATION SITE
1. Select an installation site where the following conditions
are fulfilled and that meets your customer's approval.
• The units are designed for ceiling concealed installation with
an air discharge duct of 500 mm. (See figure 13)
• Where optimum air distribution can be ensured.
• Where nothing blocks air passage.
• Where condensate water can be properly drained.
• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service can
be ensured.
• Where piping between indoor and outdoor units is possible
within the allowable limit. (Refer to the installation manual of
the outdoor unit.)
• Make sure that no piping is passing through the hatched area
(figure 6). Condensation can drip on the switch box and pipes
can prevent you from opening the switch box smoothly.
• Keep indoor unit, outdoor unit, power supply wiring and
transmission wiring at least 1 meter away from televisions
and radios. This is to prevent image interference and noise in
those electrical appliances.
(Noise may be generated depending on the conditions under
which the electric wave is generated, even if 1 meter is kept.)
2. Use suspension bolts for installation. Check whether the
ceiling is strong enough to support the weight of the indoor
unit. If there is a risk, reinforce the ceiling before installing
the unit. (See figure 1)
Service space ≥300
1
2 Drain pipe
Power supply wiring port
3
Transmission wiring port
4
5 Gas pipe
6 Liquid pipe
7 Switch box
8 Switch box cover
9 Screw for opening the switch box cover
10 Suspension bolt pitch (x4)
11 Suspension bolt pitch distance
P
REPARATIONS BEFORE INSTALLATION
1. Relation of ceiling opening to unit and suspension bolt
position. (See figure 1)
For other installation than standard installation, contact
NOTE
your Panasonic dealer for details.
2. Make the wall hole to the outdoor side for the electric
wiring, the refrigerant and drain piping.
• The hole must slope down toward the outdoor side.
• The hole size must be just as large as to hold the protective
pipe (Ø7-8 cm) (field supply).
• Use a wall hole cover (field supply) to hide the wall hole as
much as possible.
Installation and operation manual
2
3.
(See figure 1)
4.
I
NDOOR UNIT INSTALLATION
When installing optional accessories, 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.
1.
2.
3.
R
For refrigerant piping of outdoor unit, refer to the installation manual
supplied with the outdoor unit.
Before rigging tubes, check which type of refrigerant is used.
I
I
I
I
1 Protective pipe (field supply)
2 Wall hole cover
(field supply)
The fan speed for this indoor unit is preset to provide
standard external static pressure.
If higher or lower external static pressure is required, reset the
external static pressure by changing the initial setting from the
remote controller.
Install the suspension bolts. (See figure 4)
(Use M10 size bolt for the suspension bolt.) Use anchors for
existing ceilings, and a sunken insert, sunken anchors or other
field supplied parts for new ceilings to reinforce the ceiling in
order to bear the weight of the unit.
1 Anchor
2 Ceiling slab
3 Long nut or turn-buckle
4 Suspension bolt
NOTE All the above parts are field supplied.
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. (See figure 3)
1 Field procurement
2 Washer for hanger bracket
Tighten (double nut)
3
Check if the unit is horizontally levelled.
• Do not install the unit tilted.
• Check if the unit is levelled at all four corners with a water
level or a water-filled vinyl tube as shown in figure 9.
1 Water level
2 Vinyl tube
Tighten the upper nut.
EFRIGERANT PIPING WORK
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 R407C.
Apply ether oil or ester oil around the flare portions before
connecting.
To prevent dust, moisture or other foreign matter from infiltrating
the tube, either pinch the end, or cover it with tape.
The outdoor unit is charged with refrigerant.
ø7-8 cm
1 2
CS-20•25NM1HPP
Urban Multi air conditioner
4PW12341-1A