Panasonic cs-e18rb4uw installation

Order No: PAPAMY1503095CE

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Installation Manual

Air Conditioner

Indoor Unit Outdoor Unit
CS-E12RB4UW
CS-E18RB4UW

CU-E12RB4U
CU-E18RB4U

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AUTO
HEAT
COOL

DRY
FAN

MODE

POWERFUL/

QUIET

TIMER

123

FF

SETCHECK CLOCK RESET

FAN
SPEED
AIR
SWING

OFF/ON

FF/ON

TEMP

AIRSWING

FANSPEED

ET

SET

3

CANCEL

CANCELONOFF

AC RC

HEC

Destination

USA

Canada

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

© Panasonic Corporation 2015

11. Installation Instruction

11.1 Indoor Unit

11.1.1 Selecting the Location for the Indoor Unit

Provide a check port on the piping side ceiling for repair and maintenance.
 Install the indoor unit once the following conditions are satisfied and after receiving the customer approval.

1 The indoor unit must be within a maintenance space.
2 The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading

of air throughout the room.

3 Mount with the lowest moving parts at least 8 ft (2.4 m) above floor or grade level.

"

16

/

13

/16"

11

(300) or less

(Unit: inch (mm))

(Unit: inch (mm))

Obstacles

3

/8"

39
(1000)
or more

11

/16"

Floor

19
(500) or
more

"

8

/

1

96"–118

(2400 – 30 00)

1911/16"
(500) or
more

11

19
(500) or
more

* If the height from the floor to ceiling ex

ecreased

d

.

ceeds three meters, air flow distribution deteriorates a

nd the effect is

4 The installation position must be able to support a load four times the indoor unit weight.

5 The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance.
6 The indoor unit must allow easy draining.
7 The indoor unit must allow easy connection to the outdoor unit.
8 Place the indoor unit according to the height from the ceiling shown in the illustration below.
9 The indoor unit must be from at least 9.8 ft (3 m) away from any noise-generating equipment. The electrical

wiring must be shielded with a steel conduit.
10 If the power supply is subject to noise generation, add a suppressor.
11 Do not install the indoor unit in a laundry. Electric shocks may result.

Note

 Thoroughly study the following installation locations

1

In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo

fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying,

dispersing of water drops, drain pump malfunction, etc.

In these cases, take the following actions:

o Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capa

that it draws oily steam wh

o Make enough distance from the cooking room to install the air conditioner in such place wher

su

ck in oily steam.

Air conditioner

ich should not flow into the suction of the air conditioner.

e it may not

city so

Ensure ample

distance

2 Avoid installing the air conditioner in such

circumstances where cutting oil mist or iron

powder exist especially in factories, etc.
3 Avoid places where inflammable gas is

generated, flows-in, contaminated, or leaked.
4 Avoid places where sulphurous acid gas or

corrosive gas can be generated.
5 Avoid places near high frequency generators.

Cooking table

29

Use the ventilation fan for smoke­collection hood with sufficient capacity.

collectionhoodwithsufficientcapacity.

Model Name Height in the ceiling

E12***
E18***

11" (280 mm) or

more

11.1.2 Installation of Indoor Unit

n

nch

H

andabove

piping

This air conditioner uses a drain up motor.
Horizontally install the unit using a level gauge.

CEILING OPENING DIMENSIONS AND
BOLT LOCATION

The paper model for installation expand or shrink
according to temperature and humidity.
Check on dimensions before using it.

Caution

During the installation, care must be taken
not to damag

e electric wires.

 The dimensions of the paper model for installation

are the same

imensions

d
Be sure to discuss the ceiling drilling work



worke

rs concerne

as those of the ceiling opening

.

d.

POSITIONS OF AIR CONDITIONER BODY AND CEILING SURFACE

HANGING

with the

259/16" (650) (Ceiling opening)

23/8"

(60)

7

/8" (530)

20

(Hanging bolt)

2213/16" (580)

(Unit size)

(U

" (580)

16

/

13

(Unit size)

22

Refrigerant pipe

2

(60)

it: i

3

/8"

Drain pipe

23/8"

(60)

" (530)

8

/

7

20

(Hanging bolt)

"

8

/

3

(mm))

(60)

9

" (650) (Ceiling opening)

16

/

25

angingbolt

(W3/8 or M10)

Nut
(W3/8 or M10)

M10Springwasher

Warning

Keep the length of the bolt from

9

the bracket to 1

Flat washer for M10
(accessory)

Flat washer for M10
(accessory)

Nut
(W3/8 or M10)

/16" (40 mm)

Ceiling

Adjust to the same height

Paper model
for installation

Tighten the nut and bolt to prevent unit from falling

Air conditioner body

Set screw for paper
model (4 pieces)

Open the ceiling board a long the
outer edge of the pa per model.

"

"

8

/

16

1

/

7

11

4

(282 mm)

(113 mm)

11.1.3 Refrigerant Piping

Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit.
(Additional charging, etc.)

1 Brazing for piping.

a. Execute brazing before tightening the flare

nut.

b. Brazin

g must be executed whil

n gas. (This prevents generatio

nitroge
oxidized scale in copper pipe.)

2

When there is a lot of brazings for long piping,
install a strainer midway of the piping. (The
strainer is locally supplied.)

3 Use clean copper pipe with inner wall surface

free from mist and dust. Blow nitrogen gas or
air to blow off dust in the pipe before
connection.

4 Form the piping according to its routing. Avoid

bending and bending back the same piping
point more than three times. (This will result in
hardening of the pipe).

5 After deforming the pipe, align centers of the

union fitting of the indoor unit and the piping,
and tighten them firmly with wrenches.

6 Connect pipe to the service valve or ball valve

which is located below the outdoor unit.

7 After completed the piping connection, be sure to check if there is gas leakage in indoor and outdoor

connection.

e blowing

n of

Red mar k

Con• rm the red mark of the union (thin side)

•

is always at lower direction after connecting

.

Union

" (292 mm)

2

/

1

11

30

Vacuum drying

r

w

henconnectingwithth

D

After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.

CAUTION

Use two wrenches and tighten with regular torque.

Do not overtighten, overtightening may cause gas leakage.

Piping size Torque
1/4" (6.35 mm) 13.3 Ibf•ft [18 N•m (1.8 kgf•m)]
3/8" (9.52 mm) 31.0 Ibf•ft [42 N•m (4.3 kgf•m)]
1/2" (12.7 mm) 40.6 Ibf•ft [55 N•m (5.6 kgf•m)]

5/8" (15.88 mm) 47.9 Ibf•ft [65 N•m (6.6 kgf•m)]
3/4" (19.05 mm) 73.8 Ibf•ft [100 N•m (10.2 kgf•m)]

11.1.4 Indoor Unit Drain Piping

 During drain piping connection, be careful not to exert extra force on the drain port at the indoor unit.

The outside diameter of the drain connection at the indoor unit is 1-1/4" (32 mm).



Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings.

 Be sure to perform heat insulation on the drain piping.

Heat insulation material: Polyethylene foam with thickness more than 5/16" (8 mm) (local supply).

 Drain piping must have down-slope (1/50 to 1/100); be sure not to provide up-and-down slope to prevent reversal

flow.
Be sure to check no air trap on drain hose and to ensure smooth water flow and no abnormal sound.



ow.

Upward-slope

No Air Trap

Apply thehead
confluence pipe. (about 3

Use VP30 or more confluence

nd.

mplete.

the

15

/16" (100 mm))

e

Indoor

unit

Pipe clamp

Down-slope

 The height of drain may be possibl

(750 mm

Drain Test



Connect the main drain pipe to exterior and leave it provisionally until the test comes to an e
Feed water to the flexible drain hose and check the piping for leaka




Be sure to check the drain up motor for normal operating and noise when electric wiring is co
When the test is complete, connect the flexible drain hose to the drain port.



).

ainport

D

Indoor unit

" (750 mm)

or less

2

/

1

29

The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain
up motor o

Upward routin g

Tra p

e up to 29-1/2"

Down-slope (1/50 ~ 1/100)

Elbow

Elbow

peration.

Down-slope

Air Trap

 When drain set piping, install as shown in

figure bel

Indoor

unit

own-slope (1/50 ~ 1/100)

ge.

 Pour about 600-700cc of water in the drain pan of the indoor unit. (Pour from the position specified in the drawing

by using a
Press the drain pump test run on PCB to start the drain motor, and verify water drainage.



water supply bottle or other su

itable tool.)

(The drain motor will automatically stop after operating for about five minutes.)

Feed water

Drain up motor

Drain hose

Main drain pipe

Drain

Glue the joint

port

Drain hose connection
Use the clip (accessory)

Drain pan

Air outlet vent

31