Mitsubishi SUZ-KA50VA5, SUZ-KA71VA5, SUZ-KA35VA5, SUZ-KA60VA5, SUZ-KA25 Installation Manual

Air-Conditioners

SUZ-KA25, KA35, KA50, KA60, KA71VA5

INSTALLATION MANUAL

For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing
the air-conditioner unit.

INSTALLATIONSHANDBUCH

Aus Sicherheitsgründen und zur richtigen Verwendung vor der Installation die vorliegende Bedienungsanleitung
und die Installationsanleitung der Innenanlage gründlich durchlesen die Klimaanlage.

MANUEL D’INSTALLATION

Avant d’installer le climatiseur, lire attentivement ce manuel, ainsi que le manuel d’installation de l’appareil
intérieur pour une utilisation sûre et correcte.

INSTALLATIEHANDLEIDING

Lees deze handleiding en de installatiehandleiding van het binnenapparaat zorgvuldig door voordat u met het
installeren van de airconditioner begint.

MANUAL DE INSTALACIÓN

Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad interior
antes de instalar la unidad de aire acondicionado.

MANUALE DI INSTALLAZIONE

Per un uso sicuro e corretto, leggere attentamente il presente manuale ed il manuale d’installazione dell’unità
interna prima di installare il condizionatore d’aria.

EΓΧEIPIΔIO OΔHΓIΩN EΓKATAΣTAΣHΣ

Για σωστή και ασφαλή χρήση, διαβάστε προσεκτικά αυτό το εγχειρίδιο καθώς και το εγχειρίδιο εγκατάστασης
της εσωτερικής μονάδας, προτού εγκαταστήσετε τη μονάδα του κλιματιστικού.

MANUAL DE INSTALAÇÃO

Para uma utilização segura e correcta, leia atentamente este manual e o manual de instalação da unidade
interior antes de instalar o aparelho de ar condicionado.

INSTALLATIONSMANUAL

Læs af sikkerhedshensyn denne manual samt manualen til installation af indendørsenheden grundigt, før du
installerer klimaanlægget.

INSTALLATIONSMANUAL

Läs bruksanvisningen och inomhusenhetens installationshandbok noga innan luftkonditioneringen installeras
så att den används på ett säkert och korrekt sätt.

MONTAJ ELKİTABI

Emniyetli ve doğru kullanım için, klima cihazını monte etmeden önce bu kılavuzu ve iç ünite montaj kılavuzunu
tamamıyla okuyun.

FOR INSTALLER

FÜR INSTALLATEURE

POUR L’INSTALLATEUR

VOOR DE INSTALLATEUR

PARA EL INSTALADOR

PER L’INSTALLATORE

ΓΙΑ ΑΥΤΟΝ ΠΟΥ ΚΑΝΕΙ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ

PARA O INSTALADOR

TIL INSTALLATØREN

FÖR INSTALLATÖREN

MONTÖR İÇİN

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Contents

1. The following should always be observed for safety ......................2

2. Selecting the installation location ....................................2

3. Installation diagram ...............................................3

4. Drain piping for outdoor unit ........................................3

5. Refrigerant piping work ............................................4

6. Electrical work ...................................................6

7. Maintenance ....................................................7

8. Pumping down ...................................................8

9. Specications ...................................................8

1. The following should always be observed for safety

• Please provide an exclusive circuit for the air conditioner and do not con­nect other electrical appliances to it.

• Be sure to read “The following should always be observed for safety” be­fore installing the air conditioner.

• Be sure to observe the cautions specied here as they include important

items related to safety.
The indications and meanings are as follows.

•

Warning:

Could lead to death, serious injury, etc.

Caution:
Could lead to serious injury in particular environments when operated incor­rectly.

Warning:

• Do not install it by yourself (customer).

Incomplete installation could cause injury due to re, electric shock, the

unit falling or leakage of water. Consult the dealer from whom you pur­chased the unit or special installer.

• This appliance is intended to be used by expert or trained users in shops, in

light industry and on farms, or for commercial use by lay persons.

• Install the unit securely in a place which can bear the weight of the unit.

When installed in an insufcient strong place, the unit could fall causing

injured.

• Use the specied wires to connect the indoor and outdoor units securely

and attach the wires rmly to the terminal board connecting sections so the

stress of the wires is not applied to the sections.

Incomplete connecting and xing could cause re.

• Do not use intermediate connection of the power cord or the extension cord

and do not connect many devices to one AC outlet.

It could cause a re or an electric shock due to defective contact, defective
insulation, exceeding the permissible current, etc.

Check that the refrigerant gas does not leak after installation has completed.

•

• Perform the installation securely referring to the installation manual.

Incomplete installation could cause a personal injury due to re, electric

shock, the unit falling or leakage of water.

• Use only specied cables for wiring. The wiring connections must be made

securely with no tension applied on the terminal connections. Also, never

splice the cables for wiring (unless otherwise indicated in this document).

Failure to observe these instructions may result in overheating or a re.

• Perform electrical work according to the installation manual and be sure to

use an exclusive circuit.

• After reading this manual, be sure to keep it together with the instruction
manual in a handy place on the customer’s site.

: Indicates a part which must be grounded.

Warning:

Carefully read the labels afxed to the main unit.

If the capacity of the power circuit is insufcient or there is incomplete elec­trical work, it could result in a re or an electric shock.

• Attach the electrical part cover to the indoor unit and the service panel to

the outdoor unit securely.
If the electrical part cover in the indoor unit and/or the service panel in the

outdoor unit are not attached securely, it could result in a re or an electric

shock due to dust, water, etc.

• Be sure to use the part provided or specied parts for the installation work.

The use of defective parts could cause an injury or leakage of water due to

a re, an electric shock, the unit falling, etc.

• Ventilate the room if refrigerant leaks during operation.
If the refrigerant comes in contact with a ame, poisonous gases will be

released.
When pumping down the refrigerant, stop the compressor before disconnect-

•

ing the refrigerant pipes. The compressor may burst if air etc. get into it.

• When installing or relocating, or servicing the air conditioner, use only the
specied refrigerant (R410A) to charge the refrigerant lines. Do not mix it

with any other refrigerant and do not allow air to remain in the lines.

If air is mixed with the refrigerant, then it can be the cause of abnormal high

pressure in the refrigerant line, and may result in an explosion and other

hazards.

The use of any refrigerant other than that specied for the system will cause

mechanical failure or system malfunction or unit breakdown. In the worst
case, this could lead to a serious impediment to securing product safety.

Caution:

• Perform grounding.

Do not connect the ground wire to a gas pipe, water pipe arrester or tel­ephone ground wire. Defective grounding could cause an electric shock.

• Do not install the unit in a place where an inammable gas leaks.

If gas leaks and accumulates in the area surrounding the unit, it could cause

an explosion.

• Install a ground leakage breaker depending on the installation place (where
it is humid).

2. Selecting the installation location

2.1. Outdoor unit

• Where it is not exposed to strong wind.

• Where airow is good and dustless.

• Where it is not exposed to rain and direct sunshine.

• Where neighbours are not annoyed by operation sound or hot air.

• Where rigid wall or support is available to prevent the increase of operation sound

or vibration.

• Where there is no risk of combustible gas leakage.

• When installing the unit at a high level, be sure to x the unit legs.

• Where it is at least 3 m away from the antenna of TV set or radio. (Otherwise,

images would be disturbed or noise would be generated.)

• Please install it in an area not affected by snowfall or blowing snow. In areas with
heavy snow, please install a canopy, a pedestal and/or some bafe boards.

• Install the unit horizontally.

2

If a ground leakage breaker is not installed, it could cause an electric shock.

• Perform the drainage/piping work securely according to the installation

manual.
If there is a defect in the drainage/piping work, water could drop from the
unit and household goods could be wet and damaged.

• Fasten a are nut with a torque wrench as specied in this manual.
When fastened too tight, a are nut may broken after a long period and

cause a leakage of refrigerant.

Caution:
Avoid the following places for installation where air conditioner trouble is li­able to occur.

• Where there is too much machine oil.

• Salty environment as seaside areas.

• Hot-spring areas.

• Where sulde gas exists.

• Other special atmospheric areas.

The outdoor unit produces condensate during the heating operation. Select
the installation place to ensure to prevent the outdoor unit and/or the grounds
from being wet by drain water or damaged by frozen drain water.

3. Installation diagram

■ SUZ-KA25VA5

SUZ-KA35VA5

2-10 mm × 21 mm slot

■ SUZ-KA50VA5

SUZ-KA60VA5
SUZ-KA71VA5

3.1. Outdoor unit (Fig. 3-1)

C

A

D

Drainage hole ({42)
(In case of Heater models {33)

800

400

344.5

150

44

285

Air inlet

500

Air outlet

A

B

69

304 - 325

40

(mm)

C

A

A

Ventilation and service space

■ SUZ-KA25VA5

SUZ-KA35VA5

100 mm or more

A
B 350 mm or more
C Basically open 100 mm or more without any obstruction in front and on both

sides of the unit.

D 200 mm or more (Open two sides of left, right, or rear side.)

■ SUZ-KA50VA5

SUZ-KA60VA5
SUZ-KA71VA5

100 mm or more

A
B 350 mm or more
C 500 mm or more

When the piping is to be attached to a wall containing metals (tin plated) or metal

netting, use a chemically treated wooden piece 20 mm or thicker between the wall
and the piping or wrap 7 to 8 turns of insulation vinyl tape around the piping.

Units should be installed by licensed contractor accordingly to local code re­quirement.

Note:
When operating the air conditioner in low outside temperature, be sure to fol­low the instructions described below.

• Never install the outdoor unit in a place where its air inlet/outlet side may be ex­posed directly to wind.

• To prevent exposure to wind, install the outdoor unit with its air inlet side facing

the wall.

• To prevent exposure to wind, it is recommended to install a bafe board on the air

outlet side of the outdoor unit.

C

B

81

40

330

2-10 mm × 21 mm slot

Air inlet

840

417.5

Air outlet

500175

Drainage hole
({42)

Air inlet

50

Fig. 3-1

4. Drain piping for outdoor unit (Fig. 4-1)

Drain hose

Drain socket

Fig. 4-1

360

(mm)

4.1. Accessories

Check the following parts before installation.

<Outdoor unit>

1

Drain socket

• Provide drain piping before indoor and outdoor piping connection. (It will be hard

to install drain socket
to drain piping as outdoor unit becomes immovable.)

• Connect the drain hose
shown in the gure for drainage.

• Make sure to provide drain piping with a downhill grade for easy drain ow.

Note:
Do not use the drain socket
makes the fan stop.

if indoor and outdoor piping connection is conducted prior

1

(obtainable at a store, inside diameter: 15 mm) as

in the cold region. Drain may freeze and it

1

1

3

5. Refrigerant piping work

A

(B)

(C)

Fig. 5-1

A

ø9.52
ø12.7
ø15.88

ø6.35
ø9.52

Fig. 5-2

(A)

A Indoor unit
B Outdoor unit

B

A Indoor unit
B Outdoor unit

B

5.1. Refrigerant pipe (Fig. 5-1)

► Check that the difference between the heights of the indoor and outdoor

units, the length of refrigerant pipe, and the number of bends in the pipe are
within the limits shown below.

Models

SUZ-KA25/KA35 Max. 20 m Max. 12 m Max. of 10

SUZ-KA50/KA60/KA71 Max. 30 m Max. 30 m Max. of 10

• Height difference limitations are binding regardless of which unit, indoor or out­door, is positioned higher.

• Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant
(R410A) charge is required.
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)

Pipe length

Refrigerant
to be added

(1) Table below shows the specications of pipes commercially available.

Model Pipe

SUZ-KA25

SUZ-KA35

SUZ-KA50

SUZ-KA60

SUZ-KA71

(2) Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
(3) Refrigerant pipe bending radius must be 100 mm or more.

SUZ-KA25/KA35 type 30 g × (refrigerant piping length (m) -7)
SUZ-KA50/KA60 type 20 g × (refrigerant piping length (m) -7)

For liquid 6.35 1/4 0.8 mm 8 mm

For gas 9.52 3/8 0.8 mm 8 mm

For liquid 6.35 1/4 0.8 mm 8 mm

For gas 9.52 3/8 0.8 mm 8 mm

For liquid 6.35 1/4 0.8 mm 8 mm

For gas 12.7 1/2 0.8 mm 8 mm

For liquid 6.35 1/4 0.8 mm 8 mm

For gas 15.88 5/8 0.8 mm 8 mm

For liquid 9.52 3/8 0.8 mm 8 mm

For gas 15.88 5/8 1.0 mm 8 mm

(A) Pipe length

(one way)

Up to 7 m No additional charge is required.

Exceeding 7 m

SUZ-KA71 type 55 g × (refrigerant piping length (m) -7)

Outside diameter

mm inch

Additional charge is required.

(Refer to the table below.)

(B) Height

difference

Min. wall

thickness

Insulation
thickness

(C) Number of

bends (one way)

Insulation

material

Heat resisting

foam plastic

0.045 specic

gravity

Caution:

Using careful insulation of specied thickness. Excessive thickness prevents

storage behind the indoor unit and smaller thickness causes dew drippage.

a Copper tubes
b Good

a

90°

dcbe f

c No good
d Tilted
e Uneven
f Burred

Fig. 5-3

a

b

c

d

a Burr
b Copper tube/pipe
c Spare reamer
d Pipe cutter

Fig. 5-4

a

a Flare nut

b

b Copper tube

Fig. 5-5

a

b

c

A

e

d

c

b

a Flaring tool
b Die
c Copper tube
d Flare nut
e Yoke

5.2. Flaring work

• Main cause of gas leakage is defect in aring work.

Carry out correct aring work in the following procedure.

5.2.1. Pipe cutting (Fig. 5-3)

• Using a pipe cutter cut the copper tube correctly.

5.2.2. Burrs removal (Fig. 5-4)

• Completely remove all burrs from the cut cross section of pipe/tube.

• Put the end of the copper tube/pipe to downward direction as you remove burrs in

order to avoid burrs drop in the tubing.

5.2.3. Putting nut on (Fig. 5-5)

• Remove are nuts attached to indoor and outdoor unit, then put them on pipe/tube

having completed burr removal.

(not possible to put them on after aring work)

5.2.4. Flaring work (Fig. 5-6)

• Carry out aring work using aring tool as shown at the right.

Pipe diameter

(mm)

6.35 0 - 0.5 9.1

9.52 0 - 0.5 13.2

12.7 0 - 0.5 16.6

15.88 0 - 0.5 19.7

Firmly hold copper tube in a die in the dimension shown in the table at above.

When the tool for R410A is used

A (mm)

Clutch type

Dimension

B

+0

-0.4

(mm)

Fig. 5-6

4