Mitsubishi electric MXZ-8B140YA User Manual [ru]

Name: Mitsubishi electric MXZ-8B140YA
Brand: Mitsubishi electric
SKU: 2749627
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Air-Conditioners OUTDOOR UNIT

MXZ-8B140,160VA MXZ-8B140,160YA

INSTALLATION MANUAL

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

INSTALLATIONSHANDBUCH

Zum sicheren und ordnungsgemäßen Gebrauch der Klimaanlage das Installationshandbuch gründlich durchlesen.

MANUEL D’INSTALLATION

Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d’une utilisation correcte.

INSTALLATIEHANDLEIDING

Voor een veilig en juist gebruik moet u deze installatiehandleiding grondig doorlezen voordat u de airconditioner installeert.

HFC

utilized

R410A

FOR INSTALLER

English

FÜR INSTALLATEURE

Deutsch

POUR L’INSTALLATEUR

Français

VOOR DE INSTALLATEUR

Nederlands

MANUAL DE INSTALACIÓN

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

MANUALE DI INSTALLAZIONE

Per un uso sicuro e corretto, leggere attentamente questo manuale di installazione prima di installare il condizionatore d’aria.

EΓXEIPIΔIO OΔHΓIΩN EΓKATAΣTAΣHΣ

Για ασφάλεια και σωστή χρήση, παρακαλείστε διαβάσετε προσεχτικά αυτό το εγχειρίδιο εγκατάστασησ πριν αρχίσετε την εγκατάσταση τησ μονάδασ κλιματισμού.

MANUAL DE INSTALAÇÃO

Para segurança e utilização correctas, leia atentamente este manual de instalação antes de instalar a unidade de ar condicionado.

INSTALLATIONSMANUAL

Læs venligst denne installationsmanual grundigt, før De installerer airconditionanlægget, af hensyn til sikker og korrekt anvendelse.

INSTALLATIONSMANUAL

Läs denna installationsmanual noga för säkert och korrekt bruk innan luftkonditioneringen installeras.

MONTAJ ELKİTABI

Emniyetli ve doğru biçimde nasıl kullanılacağını öğrenmek için lütfen klima cihazını monte etmeden önce bu elkitabını dikkatle okuyunuz.

РУКОВОДСТВО ПО УСТАНОВКЕ

Для осторожного и правильного использования прибора необходимо тщательно ознакомиться с данным руководством по установке до выполнения установки кондиционера.

PARA EL INSTALADOR

PER L’INSTALLATORE

ΓΙΑ ΑΥΤΟΝ ΠΟΥ ΚΑΝΕΙ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ

PARA O INSTALADOR

TIL INSTALLATØREN

FÖR INSTALLATÖREN

MONTÖR İÇİN

ДЛЯ УСТАНОВИТЕЛЯ

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Contents

1. Safety precautions .....................................................................................2

2. Installation diagram & parts ....................................................................... 3

3. Installation location .................................................................................... 4

4. Installing the outdoor unit .......................................................................... 6

5. Installing the refrigerant piping .................................................................. 6

Note: This symbol mark is for EU countries only. This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and Annex IV.

Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused. This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste. Please, dispose of this equipment at your local community waste collection/recycling centre. In the European Union there are separate collection systems for used electrical and electronic product. Please, help us to conserve the environment we live in!

Caution:

• Do not vent R410A into the Atmosphere.

• R410A is a Fluorinated Greenhouse gas, covered by the Kyoto Protocol, with a Global Warming Potential (GWP)=1975.

6. Drainage piping work ...............................................................................10

7. Electrical work .........................................................................................10

8. Test run ....................................................................................................14

9. Special Functions ....................................................................................15

1. Safety precautions

► Before installing the unit, make sure you read all the “Safety precautions”. ► Please report to or take consent by the supply authority before connec-

tion to the system.

► Equipment complying with IEC/EN 61000-3-12

Warning: Describes precautions that must be observed to prevent danger of injury or death to the user.

Caution: Describes precautions that must be observed to prevent damage to the unit.

Warning:

• The unit must not be installed by the user. Ask a dealer or an authorized

technician to install the unit. If the unit is installed incorrectly, water leakage, electric shock, or ﬁre may result.

• For installation work, follow the instructions in the Installation Manual and use

tools and pipe components speciﬁcally made for use with R410A refrigerant. The R410A refrigerant in the HFC system is pressurized 1.6 times the pressure of usual refrigerants. If pipe components not designed for R410A refrigerant are used and the unit is not installed correctly, the pipes may burst and cause damage or injuries. In addition, water leakage, electric shock, or ﬁre may result.

• The unit must be installed according to the instructions in order to minimize

the risk of damage from earthquakes, typhoons, or strong winds. An incor rectly installed unit may fall down and cause damage or injuries.

• The unit must be securely installed on a structure that can sustain its weight.

If the unit is mounted on an unstable structure, it may fall down and cause damage or injuries.

• If the air conditioner is installed in a small room, measures must be taken to

prevent the refrigerant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Consult a dealer regarding the appro priate measures to prevent the allowable concentration from being exceeded. Should the refrigerant leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result.

• Ventilate the room if refrigerant leaks during operation. If refrigerant comes

into contact with a ﬂame, poisonous gases will be released.

• All electric work must be performed by a qualiﬁed technician according to

local regulations and the instructions given in this manual. The units must be powered by dedicated power lines and the correct voltage and circuit breakers must be used. Power lines with insufﬁcient capacity or incorrect electrical work may result in electric shock or ﬁre.

• Be sure to connect the power supply cords and the connecting wires for

the indoor units, outdoor units, and branch boxes directly to the units (no intermediate connections).

Intermediate connections can lead to communication errors if water enters

the cords or wires and causes insufﬁcient insulation to ground or a poor electrical contact at the intermediate connection point.

After installation work has been completed, explain the “Safety Precautions,” use, and maintenance of the unit to the customer according to the information in the Operation Manual and perform the test run to ensure normal operation. Both the Installation Manual and Operation Manual must be given to the user for keeping. These manuals must be passed on to subsequent users.

: Indicates a part which must be grounded.

Warning:

Carefully read the labels afﬁxed to the main unit.

(If an intermediate connection is necessary, be sure to take measures to

prevent water from entering the cords and wires.)

• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. If the pipes are not connected correctly, the unit will not be properly grounded and electric shock may result.

• Use only speciﬁed cables for wiring. The connections must be made securely without tension on the terminals. If the cables are connected or installed incorrectly, overheating or ﬁre may result.

• The terminal block cover panel of the outdoor unit must be ﬁrmly attached. If the cover panel is mounted incorrectly and dust and moisture enter the unit, electric shock or ﬁre may result.

• When installing or relocating, or servicing the air conditioner, use only the speciﬁed 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 speciﬁed 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.

• Use only accessories authorized by Mitsubishi Electric and ask a dealer or an authorized technician to install them. If accessories are incorrectly installed, water leakage, electric shock, or ﬁre may result.

• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs are not performed correctly, water leakage, electric shock, or ﬁre may result.

• The user should never attempt to repair the unit or transfer it to another location. If the unit is installed incorrectly, water leakage, electric shock, or ﬁre may result. If the air conditioner must be repaired or moved, ask a dealer or an authorized technician.

• After installation has been completed, check for refrigerant leaks. If refriger ant leaks into the room and comes into contact with the ﬂame of a heater or portable cooking range, poisonous gases will be released.

• Refrigerant leakage may cause suffocation. Provide ventilation in accordance with EN378-1.

1.1. Before installation

Caution:

• Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, or areas where the unit will be covered by snow, the performance can be signiﬁcantly reduced and the internal parts can be damaged.

• Do not install the unit where combustible gases may leak, be produced, ﬂow, or accumulate. If combustible gas accumulates around the unit, ﬁre or explosion may result.

• The outdoor unit produces condensation during the heating operation. Make

1.2. Before installation (relocation)

Caution:

• Be extremely careful when transporting the units. Two or more persons are needed to handle the unit, as it weighs 20 kg or more. Do not grasp the pack aging bands. Wear protective gloves to remove the unit from the packaging and to move it, as you can injure your hands on the ﬁns or other parts.

• Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause stabs or other injuries.

sure to provide drainage around the outdoor unit if such condensation is likely to cause damage.

• When installing the unit in a hospital or communications ofﬁce, be prepared for noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality.

• The base and attachments of the outdoor unit must be periodically checked

for looseness, cracks or other damage. If such defects are left uncorrected, the unit may fall down and cause damage or injuries.

• Do not clean the air conditioner unit with water. Electric shock may result.

• Tighten all ﬂare nuts to speciﬁcation using a torque wrench. If tightened too much, the ﬂare nut can break after an extended period and refrigerant can leak out.

1. Safety precautions

1.3. Before electric work

Caution:

• Be sure to install circuit breakers. If not installed, electric shock may result.

IMPORTANT Make sure that the current leakage breaker is one compatible with higher harmonics. Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter. The use of an inadequate breaker can cause the incorrect operation of inverter.

• For the power lines, use standard cables of sufﬁcient capacity. Otherwise, a

short circuit, overheating, or ﬁre may result.

1.4. Before starting the test run

Caution:

• Turn on the main power switch more than 12 hours before starting operation.

Starting operation just after turning on the power switch can severely damage the internal parts. Keep the main power switch turned on during the operation season.

• Before starting operation, check that all panels, guards and other protective

parts are correctly installed. Rotating, hot, or high voltage parts can cause injuries.

1.5. Using R410A refrigerant air conditioners

Caution:

• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,

to connect the refrigerant pipes. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust. Use pipes with the speciﬁed thickness. (Refer to page 6) Note the following if reusing existing pipes that carried R22 refrigerant.

- Replace the existing ﬂare nuts and ﬂare the ﬂared sections again.

- Do not use thin pipes. (Refer to page 6)

• Store the pipes to be used during installation indoors and keep both ends of

the pipes sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dust, debris, or moisture enters the refrigerant lines, oil dete rioration or compressor breakdown may result.

• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration

oil applied to the ﬂared sections. If mineral oil is mixed in the refrigeration oil, oil deterioration may result.

• When installing the power lines, do not apply tension to the cables. If the connections are loosened, the cables can snap or break and overheating or ﬁre may result.

• Be sure to ground the unit. Do not connect the ground wire to gas or water pipes, lighting rods, or telephone grounding lines. If the unit is not properly grounded, electric shock may result.

• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and molded case circuit breaker) with the speciﬁed capacity. If the circuit breaker capacity is larger than the speciﬁed capacity, breakdown or ﬁre may result.

• Do not touch any switch with wet hands. Electric shock may result.

• Do not touch the refrigerant pipes with bare hands during operation. The refrigerant pipes are hot or cold depending on the condition of the ﬂowing refrigerant. If you touch the pipes, burns or frostbite may result.

• After stopping operation, be sure to wait at least ﬁve minutes before turning off the main power switch. Otherwise, water leakage or breakdown may result.

• Do not use refrigerant other than R410A refrigerant. If another refrigerant is used, the chlorine will cause the oil to deteriorate.

• Use the following tools speciﬁcally designed for use with R410A refrigerant. The following tools are necessary to use R410A refrigerant. Contact your nearest dealer for any questions.

Gauge manifold Flare tool

Charge hose Size adjustment gauge

Gas leak detector Vacuum pump adapter

• Be sure to use the correct tools. If dust, debris, or moisture enters the refrigerant lines, refrigeration oil deterioration may result.

• Do not use a charging cylinder. If a charging cylinder is used, the composition of the refrigerant will change and the efﬁciency will be lowered.

Torque wrench Electronic refrigerant charging scale

Tools (for R410A)

2. Installation diagram & parts

[D]

[H]

[G]

Outdoor unit

[E]

[F]

[B]

[A] [K]

[I]

Fig. 2-1

Branch box

5-branches type

[C]

3-branches type

2.1. Before installation (Fig. 2-1)

This installation manual is only for the outdoor unit installation. In installing the indoor units and branch box, refer to the installation manual attached to each unit.

Any structural alterations necessary for the installation must comply with the local building code requirements.

This diagram is intended to show the conﬁguration of accessories. For actual installation, the outdoor unit is to be turned 180°.

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

Note: The dimensions given along the arrows above are required to guarantee the air conditioner’s performance. Install the unit in as wide a place as possible for later service or repairs.

Parts to be locally procured

Branch box/outdoor unit connecting wire

[A]

(3-core, Refer to 7.3. External wiring procedure) [B] Extension pipe 1 [C] Wall hole sleeve 1 [D] Wall hole cover 1

Pipe ﬁxing band [E]

(The quantity depends on the pipe length.)

Fixing screw for [E] 4 × 20 mm [F]

(The quantity depends on the pipe length.) [G] Piping tape 1 [H] Putty 1

[I] Drain hose (hard PVC pipe VP16) 1

[J] Refrigeration oil 1

Power supply cord [K]

(2-core, Refer to 7.3. External wiring procedure)

2 to 7

3. Installation location

330+30

1350

950

(mm)

3.1. Refrigerant pipe

Refer to 5.2. Pipe length and height difference.

3.2. Choosing the outdoor unit installation location

• Avoid locations exposed to direct sunlight or other sources of heat.

• Select a location from which noise emitted by the unit will not inconvenience neighbors.

• Select a location permitting easy wiring and pipe access to the power source and indoor unit.

• Avoid locations where combustible gases may leak, be produced, ﬂow, or accumu late.

• Note that water may drain from the unit during operation.

• Select a level location that can bear the weight and vibration of the unit.

• Avoid locations where the unit can be covered by snow. In areas where heavy snow fall is anticipated, special precautions such as raising the installation location or installing a hood on the air intake must be taken to prevent the snow from block ing the air intake or blowing directly against it. This can reduce the airﬂow and a malfunction may result.

• Avoid locations exposed to oil, steam, or sulfuric gas.

• Use the transportation handles of the outdoor unit to transport the unit. If the unit is carried from the bottom, hands or ﬁngers may be pinched.

3.3. Outline dimensions (Outdoor unit) (Fig. 3-1)

Constraints on indoor unit installation

You should note that indoor units that can be connected to this outdoor unit are the following models.

• Indoor units with model numbers 15, 20, 22, 25, 35, 42, 50, 60, 71, 80, 100 can be connected. Refer to the table below for possible 2-8 room, indoor unit combina tions.

Veriﬁcation

The rated capacity should be determined by observing the table below. The unit’s quantities are limited in 2 to 8 units. For the next step, make sure that the total rated capacity selected will stay in a range as shown below.

175

Fig. 3-2

600

Fig. 3-1

370

Fig. 3-3

• MXZ-8B140 3.0~18.5kw

• MXZ-8B160 3.0~20.2kw

Example: MXZ-8B140

MSZ-60 = 6.0 + SEZ-35 = 3.5 + SLZ-35 = 3.5 + SEZ-25 = 2.5 + SLZ-25 = 2.5

Indoor unit type 15 20 22 25 35 42 50 60 71 80 Rated capacity

(Cooling) (kW)

Combinations in which the total capacity of indoor units exceeds the capacity of the outdoor unit will reduce the cooling capacity of each indoor unit below their rated cooling capacity. Thus, combine indoor units with an outdoor unit within the outdoor unit’s capacity, if possible.

*1 When connecting the indoor unit with the model number 100, use the PAC-AK52BC branch box.

Along with this, the PAC-AK52YP-E Y-shape connection pipe is required.

The capacity of outdoor unit

• MXZ-8B140 14.0kw

• MXZ-8B160 15.5kw

1.5 2.0 2.2 2.5 3.5 4.2 5.0 6.0 7.1 8.0 10.0

Total rated capacity

18.018.5 kW

100

3.4. Ventilation and service space

3.4.1. Windy location installation

When installing the outdoor unit on a rooftop or other location unprotected from the wind, situate the air outlet of the unit so that it is not directly exposed to strong winds. Strong wind entering the air outlet may impede the normal airﬂow and a malfunction may result. The following shows three examples of precautions against strong winds.  Face the air outlet towards the nearest available wall about 50 cm away from the

wall. (Fig. 3-2)

 Install an optional air guide if the unit is installed in a location where strong winds

from a typhoon, etc. may directly enter the air outlet. (Fig. 3-3)

 Air guide

 Position the unit so that the air outlet blows perpendicularly to the seasonal wind

direction, if possible. (Fig. 3-4)

 Wind direction

Fig. 3-4

3. Installation location

Max. 500

1000

200

Fig. 3-9

1500

150

1000

Max. 300

Fig. 3-12

150

500

1500

Fig. 3-6

250

300

Max. 500

250

Fig. 3-10

Fig. 3-13

1500

200

1500

500

300

1000

Fig. 3-8Fig. 3-7Fig. 3-5

300

Fig. 3-11

500

1500

Fig. 3-14

150

2000

600

1000

1500

Fig. 3-15 Fig. 3-16 Fig. 3-17

3.4.2. When installing a single outdoor unit

Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated. Refer to the ﬁgures for each case.

 Obstacles at rear only (Fig. 3-5)  Obstacles at rear and above only (Fig. 3-6)  Obstacles at rear and sides only (Fig. 3-7)  Obstacles at front only (Fig. 3-8)

∗ When using an optional air outlet guide, the clearance is 500 mm or more.

 Obstacles at front and rear only (Fig. 3-9)

∗ When using an optional air outlet guide, the clearance is 500 mm or more.

 Obstacles at rear, sides, and above only (Fig. 3-10)

• Do not install the optional air outlet guides for upward airﬂow.

500

3000

600

1500

3.4.3. When installing multiple outdoor units

Leave 10 mm space or more between the units.

 Obstacles at rear only (Fig. 3-11)  Obstacles at rear and above only (Fig. 3-12)

• No more than three units must be installed side by side. In addition, leave space as shown.

• Do not install the optional air outlet guides for upward airﬂow.

 Obstacles at front only (Fig. 3-13)

∗ When using an optional air outlet guide, the clearance is 1000 mm or more.

 Obstacles at front and rear only (Fig. 3-14)

∗ When using an optional air outlet guide, the clearance is 1000 mm or more.

 Single parallel unit arrangement (Fig. 3-15)

∗ When using an optional air outlet guide installed for upward airﬂow, the clearance is 1000

mm or more.

 Multiple parallel unit arrangement (Fig. 3-16)

∗ When using an optional air outlet guide installed for upward airﬂow, the clearance is 1500

mm or more.

 Stacked unit arrangement (Fig. 3-17)

• The units can be stacked up to two units high.

• No more than two stacked units must be installed side by side. In addition, leave space as shown.

150

800

4. Installing the outdoor unit

Max. 30

 M10 (3/8”) bolt  Base  As long as possible.  Vent

600 Min. 360 600

175 175

Min. 10

Fig. 4-1

950

330

370

(mm)

• Be sure to install the unit in a sturdy, level surface to prevent rattling noises during operation. (Fig. 4-1)

Foundation bolt M10 (3/8”) Thickness of concrete 120 mm Length of bolt 70 mm Weight-bearing capacity 320 kg

• Make sure that the length of the foundation bolt is within 30 mm of the bottom surface of the base.

• Secure the base of the unit ﬁrmly with four-M10 foundation bolts in sturdy locations.

Installing the outdoor unit

• Do not block the vent. If the vent is blocked, operation will be hindered and break down may result.

• In addition to the unit base, use the installation holes on the back of the unit to attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 mm or less) and install on site.

Warning:

• The unit must be securely installed on a structure that can sustain its weight. If the unit is mounted on an unstable structure, it may fall down and cause damage or injuries.

• The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An incor rectly installed unit may fall down and cause damage or injuries.

Caution:

• Install the unit on a rigid structure to prevent excessive operation sound or vibration.

× 15

5. Installing the refrigerant piping

 Outdoor unit







  

a4a3a2



Fig. 5-1

*1 Although two refrigerant pipes are used between the branch box and the Y-shape

connection pipe when connecting the P100 indoor unit, calculate the piping lengths using only the length of one pipe. (Fig. 5-2)





c1 c2

Fig.5-2

 Branch box  Indoor unit



a6a5

a7 a8

 



 Indoor unit [P100 type]  Y-shape connection pipe

a1 = c1 + c2

5.1. Precautions for devices that use R410A refrigerant

• Refer to page 3 for precautions not included below on using air conditioners with R410A refrigerant.

• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the ﬂared sections.

• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses speciﬁed in the table to the below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust.

Warning: When installing or relocating, or servicing the air conditioner, use only the speciﬁed 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 pres sure in the refrigerant line, and may result in an explosion and other hazards. The use of any refrigerant other than that speciﬁed 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.

ø6.35, ø9.52, ø12.7 Thickness 0.8 mm ø15.88 Thickness 1.0 mm

• Do not use pipes thinner than those speciﬁed above.

5.2. Pipe length and height difference (Fig. 5-1)

Flared connections

• This unit has ﬂared connections on each indoor unit and branch box and outdoor

unit sides.

• Remove the valve cover of the outdoor unit, then connect the pipe.

• Refrigerant pipes are used to connect the branch box and outdoor unit.

Total piping length

Permissible

length

(one-way)

Permissible

height differ

ence

(one-way)

Number of bends

*2 Branch box should be placed within the level between the outdoor unit and indoor units.

Farthest piping length (L) Piping length between outdoor unit and branch boxes Farthest piping length after branch box (l) Total piping length between branch boxes and indoor units In indoor/outdoor section (H)*2

In branch box/indoor unit section (h1)

In each branch unit (h2) In each indoor unit (h3)

b1+b2+a1+a2+a3+a4+a5+a6+a7+a8  115 m b2+a8 b1+b2  55 m a8  15 m a1+a2+a3+a4+a5+a6+a7+a8 H  30 m (In case of outdoor unit is set higher than indoor unit)

H  20 m (In case of outdoor unit is set lower than indoor unit) h1 + h2

h2  15 m h3  12 m | b1+a1 |, | b1+a2 |, | b1+a3 |, | b1+a4 |, | b1+a5 |, | b2+a6 |, | b2+a7 |, | b2+a8 |  15

 70 m (b2  55 m, a8  15 m)

 60 m

 15 m

5. Installing the refrigerant piping

5.3. Addition of refrigerant

• Additional charging is not necessary for this unit if the total pipe length (b1+b2+a1+a2+a3+a4+a5+a6+a7+a8) does not exceed 40 m.

• If the total pipe length exceeds 40 m, charge the unit with additional R410A refrigerant according to the permitted pipe lengths in the chart below.

* When the unit is stopped, charge the unit with the additional refrigerant through

the liquid stop valve after the pipe extensions and indoor unit have been vacuumized. When the unit is operating, add refrigerant to the gas check valve using a safety charger. Do not add liquid refrigerant directly to the check valve.

After charging the unit with refrigerant, note the added refrigerant amount on the service label (attached to the unit).

Refer to the “1.5. Using R410A refrigerant air conditioners” for more informa-

tion.

able 1

Total piping length (b1+b2+a1+a2+a3+a4+a5+a6+a7+a8)

Additional refrigerant charging amount 0.6 kg 1.4 kg 2.2 kg 3.2 kg

N In case of using 1-branch box

Flare connection employed. (No. brazing)

41 - 50 m 51 - 70 m 71 - 90 m

Branch box

BB B BB

91 - 115 m

If connecting an indoor unit with ø9.52 liquid pipes (model number 71 or more for Mand S-Series and model number 60 or more for P-Series), the additional refrigerant charging amount in Table 1 must be corrected (add the following value given in Table 1).

Additional refrigerant charging correction amount ΔR=0.01 [kg/m] × ø9.52 branch pipe (liquid pipe) total length [m]

Example) b1=20 m, b2=25 m

Indoor unit A ø9.52 Liquid pipe a1=12 m Indoor unit B ø6.35 Liquid pipe a2=11 m Indoor unit C ø6.35 Liquid pipe a6=14 m Indoor unit D ø9.52 Liquid pipe a7=13 m

Total piping length : b1+b2+a1+a2+a6+a7=95 m → According to Table 1, the additional refrigerant charging amount is 3.2 kg. Because indoor units with ø9.52 liquid pipes are connected (indoor units A and D in this example), the additional refrigerant charging amount must be corrected.

Additional refrigerant charging correction amount ΔR =0.01 [kg/m] × ø9.52 branch pipe (liquid pipe) total length (a1+a7) =0.01 × (12+13 m) =0.25 kg

Therefore, the additional refrigerant charging amount is 3.2 kg + 0.25 kg = 3.45 kg. * Although two ø6.35 liquid pipes are used between the branch box and the Y-shape

connection pipe when connecting the P100 indoor unit, calculate the additional refrigerant charging amount assuming only one ø9.52 liquid pipe is used.

ΔR value from the

5.4. Selecting pipe size (Fig. 5-3)

A B

The piping connection size differs according to the type

Liquid (mm) ø9.52

Gas (mm)

ø15.88

and capacity of indoor units. Match the piping connection size of branch box with indoor unit. If the piping connection size of branch box does not match the piping connection size of indoor unit, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

N In case of using 2-branch boxes

2 branches pipe (joint) : optional parts.

BB B BB

Branch box #2

Branch box #1

Fig. 5-3

(1) Valve size for outdoor unit

For liquid ø9.52 mm For gas ø15.88 mm

(2) Valve size for branch box

 UNIT

 UNIT

 UNIT

 UNIT

 UNIT

* 3-branch type : only , ,  unit

Liquid pipe ø6.35 mm Gas pipe ø9.52 mm Liquid pipe ø6.35 mm Gas pipe ø9.52 mm Liquid pipe ø6.35 mm Gas pipe ø9.52 mm Liquid pipe ø6.35 mm Gas pipe ø9.52 mm Liquid pipe ø6.35 mm Gas pipe ø12.7 mm

Conversion formula

Fig. 5-4

1/4 F ø6.35 3/8 F ø9.52 1/2 F ø12.7 5/8 F ø15.88 3/4 F ø19.05

Different-diameter joint (optional parts) (Fig. 5-4)

Model name

MAC-A454JP ø9.52 → ø12.7 ø9.52 ø12.7 MAC-A455JP ø12.7 → ø9.52 ø12.7 ø9.52 MAC-A456JP ø12.7 → ø15.88 ø12.7 ø15.88 PAC-493PI ø6.35 → ø9.52 ø6.35 ø9.52 PAC-SG76RJ-E ø9.52 → ø15.88 ø9.52 ø15.88

Y-shape connection pipe for 100 type indoor unit (optional parts) (Fig. 5-5)

Model name

PAC-AK52YP-E

N Installation procedure (Y-shape connection pipe)

Refer to the installation manuals of PAC-AK52YP-E.

Piping preparation

 Table below shows the speciﬁcations of pipes commercially available.

Outside diameter Insulation thickness

mm mm

6.35 8

9.52 8

12.7 8

15.88 8

 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.  Refrigerant pipe bending radius must be 100 mm or more.

Caution: Be sure to use the insulation of speciﬁed thickness. Excessive thickness may cause incorrect installation of the indoor unit and branch box, and lack of thickness may cause dew drippage.

2-branch pipe (Joint) : Optional parts (According to the connection method, you can choose the favorite one.)

Model name Connection method MSDD-50AR-E ﬂare MSDD-50BR-E brazing

Connected pipes diameter Diameter A Diameter B

mm mm mm

Connected pipe diameter Diameter A Diameter B

mm mm mm Liquid ø6.35 → ø9.52 ø6.35 ø9.52 Gas ø9.52 → ø15.88 ø9.52 ø15.88

Insulation material

Heat resisting foam plastic

0.045 speciﬁc gravity

Fig. 5-5

N Installation procedure (2 branches pipe (Joint))

Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.

5. Installing the refrigerant piping

452

øA

90° ± 0.5°

 Flare cutting dimensions  Flare nut tightening torque

 (Fig. 5-6)

Copper pipe O.D.

(mm) ø6.35 8.7 - 9.1 ø9.52 12.8 - 13.2 ø12.7 16.2 - 16.6

ø15.88 19.3 - 19.7

 (Fig. 5-6)

Copper pipe O.D.

(mm) ø6.35 17 14 - 18 ø6.35 22 34 - 42 ø9.52 22 34 - 42 ø9.52 26 49 - 61 ø12.7 26 49 - 61 ø12.7 29 68 - 82

ø15.88 29 68 - 82 ø15.88 36 100 - 120

R0.4~R0.8

Fig. 5-6

Flare dimensions

øA dimensions (mm)

Flare nut O.D.

(mm)

Fig. 5-7

 Die  Copper pipe

Tightening torque

(N·m)*

* 1 N·m 10 kgf·cm

Refrigerant collection when relocating the indoor and outdoor units (pump down)

 Connect a gauge manifold valve (pressure gauge included) to the service port

near the gas stop valve of the outdoor unit so that the refrigerant pressure can be measured.

 Turn on the power supply (circuit breaker).  Close the liquid stop valve, and then perform the test run for cooling operation

(SW4-1: ON and SW4-2: OFF).

* Be sure to wait at least 3 minutes after turning on the power supply before

setting SW4-1 and SW4-2. If the DIP switches are set before 3 minutes has elapsed, the test run may not start.

 Fully close the gas stop valve when the pressure reading on the gauge drops

to 0.05 - 0.00 MPa* (approximately 0.5 - 0.0 kgf/cm

* If too much refrigerant has been added to the air conditioner system, the pres-

sure may not drop to 0.5 kgf/cm device to collect all of the refrigerant in the system, and then recharge the system with the correct amount of refrigerant after the indoor and outdoor units have been relocated.

 Stop the air conditioner operation (SW4-1: OFF and SW4-2: OFF).  Turn off the power supply (circuit breaker).

. If this occurs, use a refrigerant collecting

5.5. Connecting pipes (Fig. 5-6)

• When commercially available copper pipes are used, wrap liquid and gas pipes with commercially available insulation materials (heat-resistant to 100 °C or more, thickness of 12 mm or more).

• The indoor parts of the drain pipe should be wrapped with polyethylene foam insula tion materials (speciﬁc gravity of 0.03, thickness of 9 mm or more).

• Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening ﬂare nut.

• Use two wrenches to tighten piping connections. 

• Use leak detector or soapy water to check for gas leaks after connections are

• Apply refrigerating machine oil over the entire ﬂare seat surface.

• Use the ﬂare nuts as follows. 

N Pipe size (Outdoor unit-Branch box)

Pipe size (ømm)

N Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit

Indoor unit type Pipe size (ømm)

* When using 60 type indoor unit of MEXZ series, use the ﬂare nut in the

Do not use the ﬂare nut (gas side) attached to the indoor unit. If it is used,

Indoor unit type Pipe size (ømm)

*1 When using 35, 50 type indoor unit of P series, use the ﬂare nut attached

Do not use the ﬂare nut in the indoor unit accessory. If it is used, a gas

*2 For details about connecting the pipes for the P100 indoor unit, refer to the

• When bending the pipes, be careful not to break them. Bend radii of 100 mm to 150

•

 Pipes must be connected starting from the indoor unit. Flare nuts must be tightened with a torque wrench.  Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Ap-

• When usual pipe sealing is used, refer to Table 2 for ﬂaring of R410A refrigerant

The size adjustment gauge can be used to conﬁrm A measurements.

• Be sure to wrap insulation around the piping. Direct contact with the bare

Table 2 (Fig. 5-7)



completed.

Liquid ø9.52

Gas ø15.88

(kW) 15 20 22 25 35 42 50 60 71 80

Liquid

ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø9.52 ø9.52

Gas

ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7

indoor unit accessory for the gas side connecting of indoor unit.

a gas leakage or even a pipe extraction may occur.

Pipe size (Branch box-Indoor unit) *Case of P series indoor unit

to the indoor unit.

leakage or even a pipe extraction may occur.

installation manual of the Y-shape connection pipe (PAC-AK52YP-E).

mm are sufﬁcient. Make sure the pipes do not contact the compressor. Abnormal noise or vibration may result.

plied on site).

pipes.

Caution:

piping may result in burns or frostbite.

Copper pipe O.D.

(mm)

ø6.35 (1/4”) 0 - 0.5 1.0 - 1.5 ø9.52 (3/8”) 0 - 0.5 1.0 - 1.5 ø12.7 (1/2”) 0 - 0.5 1.0 - 1.5

ø15.88 (5/8”) 0 - 0.5 1.0 - 1.5

(kW)

Liquid ø6.35 ø6.35 ø9.52 ø9.52 ø9.52

Gas ø12.7 ø12.7 ø15.88 ø15.88 ø15.88

The lineup of a connectable indoor unit depends on a district/areas/country.

50 60 71

Flare tool for R410A Flare tool for R22·R407C

A (mm)

Clutch type



ø15.88 *ø15.88 ø15.88

100

5. Installing the refrigerant piping

 Front piping cover  Piping cover  Stop valve Service panel  Band radius : 100 mm - 150 mm

Fig. 5-8

(2)

Fig. 5-9

(1)

Type A Type B

(3)

5.6. Refrigerant piping (Fig. 5-8)

Remove the service panel  (three screws) and the front piping cover  (two screws) and rear piping cover  (two screws). Refrigerant pipes are protectively wrapped

• The pipes can be protectively wrapped up to a diameter of ø90 before or after con

necting the pipes. Cut out the knockout in the pipe cover following the groove and wrap the pipes.

Pipe inlet gap

• Use putty or sealant to seal the pipe inlet around the pipes so that no gaps re

main.

(If the gaps are not closed, noise may be emitted or water and dust will enter the

unit and breakdown may result.)

5.7. Caution for piping connection/valve operation

• Conduct piping connection and valve operation accurately by following the ﬁgure

below.

• Apply sealer along the insulator to prevent water entering the insulator covering the

refrigerant pipe joints.

• After evacuation and refrigerant charge, ensure that the handle is fully open. If

operating with the valve closed, abnormal pressure will be imparted to the high- or low-pressure side of the refrigerant circuit, giving damage to the compressor, etc.

• Determine the amount of additional refrigerant charge (refer “5.3. Addition of refriger-

ant”), and charge refrigerant additionally through the service port after completing piping connection work.

• After completing work, tighten the service port (12 - 15 N·m) and cap (20 - 25 N·m)

securely to prevent gas leak.

10 kgf·cm

*1 N·m

Method of completely opening the stop valve

The stop valve opening method varies according to the outdoor unit model. Use the appropriate method to open the stop valves. (1) Type A (Fig. 5-9)  Remove the cap, then turn one-quarter rotation counter-clockwise with a ﬂat-bladed

screwdriver to complete open.

 Check that the valves are fully open, then return the cap to its original state and

tighten it down.

(2) Type B (Fig. 5-9)  Remove the cap, pull the handle toward you and rotate 1/4 turn in a counterclock-

wise direction to open.

 Make sure that the stop valve is open completely, push in the handle and rotate

the cap back to its original position.

(3) Type C (Fig. 5-10)  Remove the cap and turn the valve rod counterclockwise as far as it will go with

the use of a 4 mm hexagonal wrench. Stop turning when it hits the stopper.

 Make sure that the stop valve is open completely and rotate the cap back to its

original position.

Valve



Unit side



Service port



Handle



Cap



Completely closed



Completely open



(On-side installation) Refrigerant



piping side Direction the refrigerant ﬂows in



Wrench hole



Operation section



Type C

Fig. 5-10

Fig. 5-11

5.8.

Airtight test and evacuation

 Airtight test (Fig. 5-11) Airtight test should be made by pressurizing nitrogen gas. For the test method, refer to the following ﬁgure. (1) Connecting the testing tool. Make a test with the stop valve closed. Be also sure

to pressurize both liquid or high-pressure pipe and gas or low pressure pipe.

(2) Do not add pressure to the speciﬁed pressure all at once; add pressure little by lit

tle.

 Pressurize to 0.5 MPa (5 kgf/cm

pressure does not decrease.

 Pressurize to 1.5 MPa (15 kgf/cm

pressure does not decrease.

 Pressurize to 4.15 MPa (41.5 kgf/cm

perature and refrigerant pressure.

(3) If the speciﬁed pressure holds for about one day and does not decrease, the pipes

have passed the test and there are no leaks.

• If the surrounding temperature changes by 1 °C, the pressure will change by about 0.01 MPa (0.1 kgf/cm

(4) If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the source

of the gas leak.

Nitrogen gas



System analyzer



Lo-knob



Hi-knob



To branch box



Outdoor unit



G), wait ﬁve minutes, and make sure the

G) and measure the surrounding tem-

G). Make the necessary corrections.

Stop valve



Liquid pipe or high-pressure



pipe Gas pipe or low-pressure pipe



Service port



5. Installing the refrigerant piping

JI K

LO HI

 Freon cylinder  Scale  Valve  3-way joint  Vacuum pump  System analyzer  Lo-knob

Fig. 5-12

 Hi-knob  To branch box  Outdoor unit  Stop valve  Liquid pipe or high-pressure pipe Gas pipe or low-pressure pipe ! Service port

* The ﬁgure to the left is an example

only. The stop valve shape, service port position, etc., may vary

according to the model. * Turn section (Do not further tighten sections 

and  together.)

 only.

 Evacuation (Fig. 5-12)

Evacuation should be made from the service port provided on the outdoor unit’s stop valve to the vacuum pump commonly used for both liquid or high-pressure pipe and gas or low-pressure pipe. (Make evacuation from both liquid or high-pressure pipe and gas or low-pressure pipe with the stop valve closed.) Remember: Never carry out air purge by refrigerant.

Warning: When installing or moving a unit to another place, do not mix anything other than speciﬁed refrigerant into the refrigeration cycle. If air is mixed, the refrigeration cycle may obtain abnormally high pressure, resulting in a burst pipe.

* A high-precision gravimeter measurable up to 0.1 kg should be used. If you are unable

to prepare such a high-precision gravimeter, you may use a charging cylinder.

Note:

• Use a gauge manifold, changing hose, and other parts for the refrigerant

indicated on the unit.

• Use a gravimeter. (One that can measure down to 0.1 kg)

Precautions when using the charge valve (Fig. 5-13)

Do not tighten the service port too much when installing it, otherwise, the valve core could be deformed and become loose, causing a gas leak. After positioning section it. Do not further tighten sections  and  together after tightening section .

 in the desired direction, turn section  only and tighten

 Charge hose  Service port

Fig. 5-13

6. Drainage piping work

Outdoor unit drainage pipe connection

When drain piping is necessary, use the drain socket or the drain pan (option).

Drain socket PAC-SG61DS-E Drain pan PAC-SG64DP-E

7. Electrical work

[1] Basic systems

ABCDEBCABC

(5-branch type)

ICIC IC IC IC

OC: Outdoor unit BC: Branch box IC: Indoor unit RC: Remote controller

(3-branch type)

IC IC

Note: The indoor units can be connected to any of the 5 connectors (5-branch

(5-branch type)

type) or 3 connectors (3-branch type) of the branch box.

(3-branch type)

ABCD EBCABC

ICRCIC IC

RCRCR

* For details about connecting the wires for the P100 indoor unit, refer to the

installation manual of the Branch box (PAC-AK52BC).

R C

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