Mitsubishi Electric PUMY-SP112, PUMY-SP125, PUMY-SP140VKM Installation guide

Air-Conditioners PUMY-SP112, SP125, SP140VKM PUMY-SP112, SP125, SP140YKM

For use with R410A

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.

РУКОВОДСТВО ПО УСТАНОВКЕ

Для обеспечения безопасной и надлежащей эксплуатации внимательно прочтите данное руководство и руководство по установке внутреннего прибора перед установкой кондиционера.

INSTALLASJONSHÅNDBOK

For å sikre trygg og riktig bruk skal denne håndboken samt installasjonshåndboken for innendørsenheten leses grundig gjennom før du installerer klimaanleggenheten.

INSTRUKCJA MONTAŻU

Aby zapewnić bezpieczne i prawidłowe korzystanie z urządzenia, przed montażem klimatyzatora należy dokładnie zapoznać się z treścią niniejszej instrukcji oraz instrukcji montażu jednostki wewnętrznej.

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

ДЛЯ УСТАНОВИТЕЛЯ

FOR MONTØR

DLA INSTALATORA

English (GB)

Deutsch (D)

Français (F)

Nederlands (NL)

Español (E)

Italiano (I)

Eλληνικά (GR)

Português (P)

Dansk (DA)

Svenska (SW)

Türkçe (TR)

Русский (RU)

Norsk (NO)

Polski (PL)

Contents

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

2. Installation location .................................................................................... 4

3. Installing the outdoor unit ..........................................................................7

4. Installing the refrigerant piping ..................................................................7

Caution:

• Do not vent R410A into the atmosphere.

Conrmation of parts attached

In addition to this manual, the following part is supplied with the outdoor unit. It is used for grounding the S terminal of transmission terminal block TB7. For details refer to “6. Electrical work”.

Grounding lead wire

1. Safety precautions

► Before installing the unit, make sure you read all the “Safety precau-

tions”.

► Please report to or take consent by the supply authority before connec-

tion to the system.

► PUMY-SP·VKM series complying with IEC/EN 61000-3-12 ► PUMY-SP·VKM series is designed for use in the residential, commercial

and light-industrial environment.

► PUMY-SP·YKM series is designed as professional equipment.

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

5. Drainage piping work ...............................................................................15

6. Electrical work .........................................................................................15

7. Test run ....................................................................................................24

8. Special functions .....................................................................................25

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 afxed to the main unit.

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 re may result.

• 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.

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

use tools and pipe components specically 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 re 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 incorrectly 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 appropriate 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 ame, poisonous gases will be released.

• All electric work must be performed by a qualied 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 insufcient capacity or incorrect electrical work may result in electric shock or re.

• 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 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.

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

• The appliance shall be installed in accordance with national wiring regulations.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.

• 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.

• 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 re 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 re 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 re 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 refrigerant leaks into the room and comes into contact with the ame of a heater or portable cooking range, poisonous gases will be released.

1. Safety precautions

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 signicantly reduced and the internal parts can be damaged.

• Do not install the unit where combustible gases may leak, be produced, ow, or accumulate. If combustible gas accumulates around the unit, re or explosion may result.

• The outdoor unit produces condensation during the heating operation. Make sure to provide drainage around the outdoor unit if such condensation is likely to cause damage.

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 packaging bands. Wear protective gloves to remove the unit from the packaging and to move it, as you can injure your hands on the ns 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.

• 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.

1.3. Before electric work

Caution:

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

• For the power lines, use standard cables of sufcient capacity. Otherwise, a short circuit, overheating, or re 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 re may result.

• When installing the unit in a hospital or communications ofce, 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.

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

• Tighten all are nuts to specication using a torque wrench. If tightened too much, the are nut can break after an extended period and refrigerant can leak out.

• Be sure to ground the unit. Do not connect the ground wire to gas or water pipes, lightning 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 specied capacity. If the circuit breaker capacity is larger than the specied capacity, breakdown or re 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.

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

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 specied thickness. (Refer to

4.1.) Note the following if reusing existing pipes that carried R22 refrigerant.

- Replace the existing are nuts and are the ared sections again.

- Do not use thin pipes. (Refer to 4.1.)

• 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 deterioration or compressor breakdown may result.

• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the ared sections. If mineral oil is mixed in the refrigeration oil, oil deterioration 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 owing refrigerant. If you touch the pipes, burns or frostbite may result.

• After stopping operation, be sure to wait at least ve 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 specically designed for use with R410A refrigerant. The following tools are necessary to use R410A refrigerant. Contact your nearest dealer for any questions.

Tools (for R410A)

Gauge manifold Flare tool

Charge hose Size adjustment gauge

Gas leak detector Vacuum pump adapter

Torque wrench Electronic refrigerant charging scale

• 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 efciency will be lowered.

2. Installation location

330+40

981

225

600

Fig. 2-1

1050

370

(mm)

2.1. Refrigerant pipe

Refer to Fig. 4-1, 4-2.

2.2. 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, ow, or accumulate.

• 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 blocking the air intake or blowing directly against it. This can reduce the airow 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 ngers may be pinched.

2.3. Outline dimensions (Outdoor unit) (Fig. 2-1)

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 15-140 can be connected.

When using Branch box, Indoor units with model numbers 15-100 can be connected. Refer to the table 1 below for possible room, indoor unit combinations.

Verication

The rated capacity should be determined by observing the table below. The unit’s quantities are limited as shown in the following table 2. For the next step, make sure that the total rated capacity selected will stay in a range of 50% – 130% of the outdoor unit capacity.

• PUMY-SP112 6.3 – 16.2 kW

• PUMY-SP125 7.1 – 18.2 kW

• PUMY-SP140 8.0 – 20.2 kW

Table 1-1 City Multi indoor units

Indoor unit type Rated capacity (Cooling) (kW)

Table 1-2 M series, P series, S series

Indoor unit type Rated capacity (Cooling) (kW)

15 20 22 25 28 32 36 40 45 50 56 63

1.7 2.2 2.5 2.8 3.2 3.6 4.0 4.5 5.0 5.6 6.3 7.1

71 80 100 125 140

8.0 9.0 11.2 14.0 16.0

15 20 22 25 35 42 50 60 71 80 100

1.5 2.0 2.2 2.5 3.5 4.2 5.0 6.0 7.1 8.0 10.0

Table 2 Connectable indoor units quantities

Model Only system Mixed system

PUMY-SP112 1-9 2-8 Max. 5 Max. 5 Max. 7 or 8*1 Max. 3 or 2*1 PUMY-SP125 1-10 2-8 Max. 5 Max. 5 Max. 8 Max. 3 PUMY-SP140 1-12 2-8 Max. 5 Max. 5 Max. 8 Max. 3

Only City Multi indoor units

(Connection without Branch

box)

Only M series, P series,

S series indoor units

(Connection with Branch box)

Connection with

*1 When connecting 7 indoor units via branch box, connectable citymulti indoor units

are 3; connecting 8 indoor units via branch box, connectable citymulti indoor units are 2.

Table 3 Connectable Branch box quantities

Model Branch box PUMY-SP112/125/140 1-2

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.

One Branch box Two Branch box

Branch box

City Multi indoor

units

Connection with

Branch box

City Multi indoor

units

2. Installation location

2.4. Connecting a PEFY-P∙VMA3-E

When using a PEFY-P∙VMA3-E, use the following combinations for the connected indoor units.

PUMY-SP112 PUMY-SP125 PUMY-SP140

PEFY-P25VMA3-E × 2

PEFY-P32VMA3-E × 2

All combinations excluding the above combinations

Ex. 1: PEFY-P25VMA3-E × 2

PEFY-P32VMA-E × 2

Ex. 2: PEFY-P25VMA3-E × 2

PEFY-P32VMA3-E × 1

Ex. 3: PEFY-P32VMA3-E × 4

(A combination for a PUMY-SP125)

Ex. 4: PEFY-P25VMA3-E × 2

PEFY-P32VMA3-E × 2

MSZ-FH25VE × 1

PEFY-P25VMA3-E × 1

PEFY-P32VMA3-E × 3

All combinations excluding the above combinations

Ex. 1: PEFY-P32VMA3-E × 3

PEFY-P32VMA-E × 1

Ex. 2: PEFY-P32VMA3-E × 3

Ex. 3: PEFY-P25VMA3-E × 2

+ PEFY-P32VMA3-E × 2 (A combination for a PUMY-SP112)

Ex. 4: PEFY-P32VMA3-E × 3

+ PLFY-P20VFM-E × 1

+ SEZ-KD25VA × 1

Ex. 1: A ceiling-concealed unit other than a VMA3 series is selected. Combinations

with a ceiling-concealed different series are not possible. Ex. 2: The number of units is incorrect. Ex. 3: The combination is for a unit with a different capacity. Ex. 4: The combination is not an “OK” combination.

PEFY-P32VMA3-E × 2

PEFY-P40VMA3-E × 2

All combinations excluding the above combinations

Ex. 1: PEFY-P32VMA3-E × 3

PEFY-P40VMA-E × 1

Ex. 2: PEFY-P32VMA3-E × 2

PEFY-P40VMA3-E × 1

Ex. 3: PEFY-P32VMA3-E × 4

(A combination for a PUMY-SP125)

Ex. 4: PEFY-P32VMA3-E × 3

PCFY-P40VKM-E × 1

MSZ-SF15VA × 1

2.5. Connecting a PLFY-EP∙VEM-E

For the PLFY-EP∙VEM-E, up to 2 units can be connected. Other indoor units*1 can be connected within the total rated capacity and maximum number of connected units. *1 Excluding the PEFY-P∙VMA3-E and PEFY-P∙VMH-EF.

2. Installation location

2.6. Ventilation and service space

2.6.1. When installing a single outdoor unit

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

1 Obstacles at rear only (Fig. 2-2) 2 Obstacles at rear and above only (Fig. 2-3) 3 Obstacles at rear and sides only (Fig. 2-4) 4 Obstacles at front only (Fig. 2-5)

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

5 Obstacles at front and rear only (Fig. 2-6)

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

6 Obstacles at rear, sides, and above only (Fig. 2-7)

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

150

Fig. 2-2

Max.500

Fig. 2-3

300

2.6.2. When installing multiple outdoor units

Leave 25 mm space or more between the units.

1 Obstacles at rear only (Fig. 2-8) 2 Obstacles at rear and above only (Fig. 2-9)

• No more than 3 units must be installed side by side. In addition, leave space as shown.

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

3 Obstacles at front only (Fig. 2-10)

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

4 Obstacles at front and rear only (Fig. 2-11)

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

5 Single parallel unit arrangement (Fig. 2-12)

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

or more.

6 Multiple parallel unit arrangement (Fig. 2-13)

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

or more.

7 Stacked unit arrangement (Fig. 2-14)

• The units can be stacked up to 2 units high.

• No more than 2 stacked units must be installed side by side. In addition, leave space as shown.

1000

200

Fig. 2-4

300

UNIT: mm

1000*

Fig. 2-5

Fig. 2-6

1500

Fig. 2-9

1000*

150

Max.300

500

1500

250

Max.500

250

Fig. 2-7

Fig. 2-10

1500*

500

1500

300

Fig. 2-8

500

1500*

Fig. 2-11

500

150

1500

800

Fig. 2-14

1000

600

Fig. 2-12

150

2000*

3000*

600

1500

Fig. 2-13

2. Installation location

Fig. 2-15 Fig. 2-16

3. Installing the outdoor unit

2.6.3. 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 airow and a malfunction may result. The following shows two examples of precautions against strong winds. 1 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. 2-15)

A Air guide

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

direction, if possible. (Fig. 2-16)

B Wind direction

Max. 30

A M10 (3/8") bolt B Base C As long as possible.

* When installing a single outdoor unit, the clearance is 15 mm or more.

D Vent E Set deep in the ground.

Min. 500

600 600

225 225

Min. 25*

1050

(mm)

33040

370

• Be sure to install the unit in a sturdy, level surface to prevent rattling noises during operation. (Fig. 3-1)

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 rmly 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 breakdown 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 × 15 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 incorrectly installed unit may fall down and cause damage or injuries.

Caution:

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

Fig. 3-1

4. Installing the refrigerant piping

4.1. Precautions for devices that use R410A refrigerant

• Refer to 1.5. 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 ared sections.

• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specied 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 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.

Pipe size (mm) ø6.35 ø9.52 ø12.7 ø15.88

Thickness (mm) 0.8 0.8 0.8 1.0

• Do not use pipes thinner than those specied above.

• The thicknesses listed in the table above are based on Japanese standards.

Use pipes with a maximum working pressure of 4.15 MPa [601 PSIG] or higher according to local standards.

4. Installing the refrigerant piping

A+B+C+D+a+b+c+d+e [ 120 m L = A+B+C+D+e [ 70 m ℓ = B+C+D+e [ 50 m H [ 50 m (Outdoor lower H [ 30 m) h [ 15 m

B C

ahb c d

C C C

4.1.1. Connection without Branch box (Fig. 4-1)

A (mm)

L: The farthest piping length from the outdoor unit to an indoor unit.

B, C, D (mm)

L: The farthest piping length from the outdoor unit to an indoor unit.

Liquid pipe

ø9.52 ø15.88

Liquid pipe

ø9.52 ø15.88

Gas pipe

a, b, c, d, e, f (mm)

Model number

A+a+b+c+d+e+f [ 120 m L = A+f [ 70 m, ℓ = f [ 50 m H [ 50 m (Outdoor lower H [ 30 m) h [ 15 m

c d

C C

e f

A Outdoor unit B First branch (CMY) C Indoor unit D Cap

Fig. 4-1

15, 20, 25, 32, 40, 50

a, b, c, d, e, f [ 30 m a, b, c, d, e, f ˃ 30 m ø9.52*1

63, 71, 80, 100, 125, 140 ø9.52 ø15.88

*1 If the piping length after the rst joint exceeds 30 m, use a pipe size of ø9.52 for

the pipes of the system that exceeds 30 m.

4-Branching header

CMY-Y64-G-E CMY-Y68-G-E

Liquid pipe

Branch kit model

CMY-Y62-G-E

ø6.35

8-Branching header

Gas pipe

ø12.7

* When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor

unit, refer to the installation manual for the CONNECTION KIT when selecting the pipe size and piping length.

A Outdoor unit

B Branch box (PAC-MK∙BC(B)) C Indoor unit D First branch (MSDD)

4.1.2. Connection with Branch box (Fig. 4-2)

Flared connections

• This unit has ared 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.

C C C

a4a3a2

a6a5

C C

a7 a8

Fig. 4-2

c1 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 120 m c1 + b2 + a8 [ 80 m (b2 [ 55 m, a8 [ 25 m) c1 + b1 + b2 [ 55 m

b2 [ 50 m a8 [ 25 m

a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 95 m H [ 50 m (In case of outdoor unit is set higher than indoor unit) H [ 30 m (In case of outdoor unit is set lower than indoor unit) h1 + h2 [ 15 m h2 [ 15 m h3 [ 12 m

| c1 + b1 + a1 |, | c1 + b1 + a2 |, | c1 + b1 + a3 |, | c1 + b1 + a4 |, | c1 + b1 + a5 |, | c1 + b2 + a6 |, | c1 + b2 + a7 |, | c1 + b2 + a8 | [ 15

Permissible

length

(one-way)

Permissible

height difference (one-way)

Number of bends

Total piping length Farthest piping length (L) Piping length between outdoor unit and branch boxes Farthest branch box from the rst joint (b2) Farthest piping length after branch box (l) Total piping length between branch boxes and indoor units

In indoor/outdoor section (H)*1

In branch box/indoor unit section (h1) In each branch unit (h2) In each indoor unit (h3)

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

4. Installing the refrigerant piping

■ In case of using 1-branch box

Flare connection employed. (No. brazing)

Branch box (PAC-MK∙BC(B))

B B B B B

■ In case of using 2-branch boxes

2 branches pipe (joint) (MSDD) : optional parts.

B B B B B

Branch box #1 (PAC-MK∙BC(B))

Branch box #2 (PAC-MK∙BC(B))

Fig. 4-3

(1) Valve size for outdoor unit

For liquid ø9.52 mm For gas ø15.88 mm

(2) Valve size for branch box

A UNIT

B UNIT

C UNIT

D UNIT

E UNIT

* 3-branch type : only A, B, C 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. 4-4

A (outside) B (inside)

Fig. 4-5

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

Selecting pipe size (Fig. 4-3)

A B

The piping connection size differs according to the type

Liquid (mm) ø9.52

Gas (mm) ø15.88

L: The farthest piping length for the main pipes from the outdoor unit to the branch

box.

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

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

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

Model name

PAC-SG78RJB-E PAC-SG79RJB-E PAC-SG80RJB-E PAC-SG77RJB-E PAC-SG76RJB-E

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

Model name Connection method MSDD-50AR-E are MSDD-50BR-E brazing

■ Installation procedure (2 branches pipe (Joint))

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

Pipe size (Outdoor unit-Branch box)

■

Pipe size (ømm)

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

Branch box

■

Model name Number of connected units

PAC-MK3 PAC-MK5

✽

Note:

= 0, 1, 2, ....

The PAC-MK31/32BC(B) and PAC-MK51/52BC(B) cannot be connected.

Pipe size (Branch box–Indoor unit) Case of M series or S series indoor unit

■

Indoor unit type

Pipe size (ømm)

* If the pipe size of indoor unit is different, use a different-diameter joint.

Liquid ø9.52

✽

BC(B) 3-branches (Max. 3 units)

✽

BC(B) 5-branches (Max. 5 units)

(kW) 15 – 42 50 60 71 – 80

Liquid ø6.35 ø6.35 ø9.52

Gas ø9.52 ø12.7 ø15.88 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.)

Connected pipes diameter Diameter A Diameter B

Connected pipes diameter

Gas ø15.88

mm mm mm

Outside

mm mm mm ø9.52 → ø12.7 ø12.7 → ø9.52 ø12.7 → ø15.88 ø6.35 → ø9.52 ø9.52 → ø15.88

Diameter A

ø9.52 ø12.7 ø12.7 ø9.52 ø12.7 ø15.88 ø6.35 ø9.52 ø9.52 ø15.88

Diameter B

Inside

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

■

Indoor unit type

Pipe size (ømm)

*1 The lineup of a connectable indoor unit depends on a district/areas/

country.

*2 When using 35, 50 type indoor unit of P series, use the are nut attached

to the indoor unit.

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

leakage or even a pipe extraction may occur.

(kW) 35 – 50 60 – 100

Liquid ø6.35 ø9.52

Gas ø12.7 ø15.88

4. Installing the refrigerant piping

4.1.3. Mixed system (City Multi indoor units and M/S/P series indoor units via Branch box)

4.1.3-1 In case of using 1-branch box

Permissible length (One-way)

Permissible height difference (One-way)

a2 a3

E E

c2 b2

E E

Total piping length Farthest piping length (L1) Farthest piping length. Via Branch box (L2) Piping length between outdoor unit and branch box Farthest piping length from the rst joint Farthest piping length after branch box Total piping length between branch boxes and indoor units

In indoor/outdoor section (H) *1

In branch box/indoor unit section (h1) In each indoor unit (h3)

b1c1

a4 a5 a6 a7 a8

F F F

A Outdoor Unit B First joint (CMY, MSDD) C Branch header (CMY) D Branch box (PAC-MK∙BC(B))

E CityMulti Indoor unit F M/S/P series Indoor unit

e1 + d1 + d2 + c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 120 m e1 + d2 + a1 or e1 + d1 + c1 + b2 [ 70 m e1 + d1 + c1 + b1 + a8 [ 80 m e1 + d1 + c1 + b1 [ 55 m d1 + c1 + b1 or d2 + a1 [ 50 m a8 [ 25 m a4 + a5 + a6 + a7 + a8 [ 95 m H [ 50 m (In case of outdoor unit is set higher than indoor unit) H [ 30 m (In case of outdoor unit is set lower than indoor unit) h1 [ 15 m h3 [ 12 m

Number of bends |e1 + d2 + a1|, |e1 + d2 + a2|, |e1 + d2 + a3|, |e1 + d1 + c2|, |e1 + d1 + c1 + b2|,

|e1 + d1 + c1 + b1 + a4|, |e1 + d1 + c1 + b1 + a5|, |e1 + d1 + c1 + b1 + a6|, |e1 + d1 + c1 + b1 + a7|, |e1 + d1 + c1 + b1 + a8| [ 15

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

4.1.3-2 In case of using 2-branch boxes

Permissible length (One-way)

Permissible height difference (One-way)

Number of bends

a2 a3

E E

a4 a5 a6 a7 a8 a9 a10 a11

F F

Total piping length Farthest piping length (L1) Farthest piping length. Via Branch box (L2) Piping length between outdoor unit and branch boxes Farthest piping length from the rst joint Farthest piping length after branch box Farthest branch box from outdoor unit Total piping length between branch boxes and indoor units

In indoor/outdoor section (H) *1

In branch box/indoor unit section (h1+h2) In each branch unit (h1) In each indoor unit (h3)

A Outdoor Unit B First joint (CMY, MSDD)

F F

C Branch header (CMY) D Branch box (PAC-MK∙BC(B)) E CityMulti Indoor unit F M/S/P series Indoor unit

d1 + c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 [ 120 m d1 + c1 + a1 [ 70 m d1 + c2 + b2 + a11 [ 80 m d1 + c2 + b1 + b2 [ 55 m c2 + b2 or c1 + a1 [ 50 m

a11 [ 25 m

d1 + c2 + b2 [ 55 m a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 [ 95 m H [ 50 m (In case of outdoor unit is set higher than indoor unit) H [ 30 m (In case of outdoor unit is set lower than indoor unit) h1 + h2 [ 15 m h2 [ 15 m h3 [ 12 m

|d1 + c1 + a1|, |d1 + c1 + a2|, |d1 + c1 + a3|, |d1 + c2 + b1 + a4|, |d1 + c2 + b1 + a5|, |d1 + c2 + b1 + a6|, |d1 + c2 + b1 + a7|, |d1 + c2 + b1 + a8|, |d1 + c2 + b2 + a9|, |d1 + c2 + b2 + a10|, |d1 + c2 + b2 + a11| [ 15

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

4. Installing the refrigerant piping

4.1.3-3 Selecting pipe size System pipe size

A Outdoor Unit B First joint (CMY, MSDD) C Branch header (CMY)

D Branch box (PAC-MK E City Multi Indoor unit F M/S/P series Indoor unit

C D

f g h i j

F F F

Branch box pipe size

Branch box

Port A

Port B

Port C

Port D

Port E

b c

E E

d e

E E F

(1) Valve size for outdoor unit

For liquid For gas

(2) Valve size for branch box

UNIT

* 3-branch type : only A, B, C unit

Fig. 4-6

·BC(B))

ø9.52 mm

ø15.88 mm

Conversion formula

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

Pipe size

A, B, C, D, E

Liquid pipe

Gas pipe

ø9.52 ø15.88

L1: The farthest piping length from the outdoor unit to an indoor unit. L2: The farthest piping length for the main pipes from the outdoor unit to the branch

box.

L3: The farthest piping length from the rst joint.

a, b, c – j

Indoor unit series City Multi

Model number

15 – 50

Liquid pipe

L3 [ 30m

ø6.35

L3 ˃ 30m ø9.52*1

Gas pipe

ø12.7

63 – 140 ø9.52 ø15.88

M series or S series 15 – 42 ø6.35 ø9.52

50 ø6.35 ø12.7 60 ø6.35 ø15.88 71, 80 ø9.52 ø15.88

P series 35 – 50 ø6.35 ø12.7

60 – 100 ø9.52 ø15.88

* If the pipe size of indoor unit is different, use a different-diameter joint. *1 If the piping length after the rst joint exceeds 30 m, use a pipe size of ø9.52 for

the pipes of the system that exceeds 30 m.

2-branch joint CMY-Y62-G-E 4-branch header CMY-Y64-G-E 8-branch header CMY-Y68-G-E

Different-diameter joint (optional parts) (Fig. 4-6)

Model name

Connected pipes diameter Diameter A Diameter B

mm mm mm 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

Different-diameter joint (optional parts) (Fig. 4-7)

Model name

Connected pipes diameter

Outside

Diameter A

Inside

Diameter B

mm mm mm PAC-SG78RJB-E PAC-SG79RJB-E PAC-SG80RJB-E PAC-SG77RJB-E PAC-SG76RJB-E

ø9.52 → ø12.7 ø12.7 → ø9.52 ø12.7 → ø15.88 ø6.35 → ø9.52 ø9.52 → ø15.88

ø9.52 ø12.7 ø12.7 ø9.52 ø12.7 ø15.88 ø6.35 ø9.52 ø9.52 ø15.88

A (outside)

Fig. 4-7

B (inside)

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

Model name Connection method MSDD-50AR-E are MSDD-50BR-E brazing

Branch box

Model name Number of connected units

✽

PAC-MK3 PAC-MK5

Note:

BC(B) 3-branches (Max. 3 units)

✽

BC(B) 5-branches (Max. 5 units)

✽

= 0, 1, 2, ....

The PAC-MK31/32BC(B) and PAC-MK51/52BC(B) cannot be connected.

4. Installing the refrigerant piping

øA

90°± 0.5°

A Flare cutting dimensions B Flare nut tightening torque

A (Fig. 4-8)

Copper pipe O.D.

(mm)

B (Fig. 4-8)

ø6.35 8.7 - 9.1 ø9.52 12.8 - 13.2

ø12.7 16.2 - 16.6 ø15.88 19.3 - 19.7 ø19.05 23.6 - 24.0

Copper pipe O.D.

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

ø12.7 29 68 - 82 ø15.88 29 68 - 82 ø15.88 36 100 - 120 ø19.05 36 100 - 120

45°± 2°

R0.4 - R0.8

Flare dimensions

øA dimensions (mm)

Flare nut O.D.

Fig. 4-8

(mm)

Fig. 4-9

Tightening torque

A Die B Copper pipe

(N·m)

4.2. Connecting pipes (Fig. 4-8)

Fig. 4-1, 4-2 is a sample of piping system.

• Conduct sufcient anti-condensation and insulation work to prevent water dripping from the refrigerant piping. (liquid pipe/gas pipe)

• Increase insulation depending on the environment where the refrigerant piping is installed, or condensation may occur on the surface of the insulation material. (Insulation material Heat-resistant temperature: 120 °C, Thickness: 15 mm or more)

* When the refrigerant piping is used in locations subject to high temperature and

humidity such as in the attic, further addition of insulation may be required.

• To insulate the refrigerant piping, apply heat-resistant polyethylene foam between the indoor unit and insulation material as well as to the net between the insulation material lling all gaps.

(Condensation forming on the piping may result in condensation in the room or

burns when contacting the piping.)

• Be sure to separate thermal insulation for gas and liquid refrigerant pipes.

• The indoor parts of the drain pipe should be wrapped with polyethylene foam insulation materials (specic gravity of 0.03, thickness of 9 mm or more).

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

• Use 2 wrenches to tighten piping connections. B

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

• Apply refrigerating machine oil over the entire are seat surface. C

• Use the are nuts for the following pipe size. D

City Multi Indoor unit

Gas side Pipe size (mm) ø12.7 ø15.88 ø15.88

Liquid side Pipe size (mm) ø6.35*1 ø9.52 ø9.52

*1 If the farthest piping length after the rst joint exceeds 30 m, use a pipe size of ø9.52.

• When bending the pipes, be careful not to break them. Bend radius of 100 mm to 150 mm is sufcient.

• Make sure the pipes do not contact the compressor. Abnormal noise or vibration may result.

1 Pipes must be connected starting from the indoor unit. Flare nuts must be tightened with a torque wrench. 2 Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Ap-

plied on site).

• When usual pipe sealing is used, refer to Table 3 for aring of R410A refrigerant pipes.

The size adjustment gauge can be used to conrm A measurements. * To connect the CONNECTION KIT (PAC-LV11M-J), refer to the installation

manual for the CONNECTION KIT.

Table 3 (Fig. 4-9)

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 ø19.05 (3/4") 0 - 0.5 1.0 - 1.5

15-50 63-140

A (mm)

Flare tool for R410A Flare tool for R22·R407C

Clutch type

Outdoor unit

4. Installing the refrigerant piping

A Front piping cover B Piping cover C Stop valve

A B

C D

E F

A Stop valve <Liquid side> B Stop valve <Gas side> C Service port D Open/Close section

D Service panel E Bend radius : 100 mm - 150 mm F Strap

Fig. 4-10

C D

E F

E Local pipe F Sealed, same way for gas side G Pipe cover

Fig. 4-11

4.3. Refrigerant piping (Fig. 4-10)

Remove the service panel D (three screws) and the front piping cover A (two screws) and rear piping cover B (ve screws). 1 Perform refrigerant piping connections for the indoor/outdoor unit when the outdoor

unit’s stop valve is completely closed.

2 Vacuum-purge air from the indoor unit and the connection piping. 3 After connecting the refrigerant pipes, check the connected pipes and the indoor

unit for gas leaks. (Refer to 4.4. Refrigerant pipe airtight testing method)

4 Vacuumize the refrigerant lines through the service port of the liquid and gas stop

valves. And then open the stop valves completely (for both the liquid and gas stop valves). This will completely connect the refrigerant lines of the indoor and outdoor units.

• If the stop valves are left closed and the unit is operated, the compressor and control valves will be damaged.

• Use a leak detector or soapy water to check for gas leaks at the pipe connection sections of the outdoor unit.

• Do not use the refrigerant from the unit to purge air from the refrigerant lines.

• After the valve work is completed, tighten the valve caps to the correct torque: 20 to 25 N·m (200 to 250 kgf·cm).

Failure to replace and tighten the caps may result in refrigerant leakage. In

addition, do not damage the insides of the valve caps as they act as a seal to prevent refrigerant leakage.

5 Use sealant to seal the ends of the thermal insulation around the pipe connection

sections to prevent water from entering the thermal insulation.

4.4. Refrigerant pipe airtight testing method

(1) Connect the testing tools.

• Make sure the stop valves A B are closed and do not open them.

• Add pressure to the refrigerant lines through the service port C of the liquid

stop valve A and the gas stop valve B.

(2) Do not add pressure to the specied pressure all at once; add pressure little by little.

1 Pressurize to 0.5 MPa (5 kgf/cm

pressure does not decrease.

2 Pressurize to 1.5 MPa (15 kgf/cm

pressure does not decrease.

3 Pressurize to 4.15 MPa (41.5 kgf/cm

perature and refrigerant pressure.

(3) If the specied 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.

G), wait ve minutes, and make sure the

G) and measure the surrounding tem-

G). Make the necessary corrections.

4. Installing the refrigerant piping

A Valve B Unit side C Cap D Local pipe side E Pipe cover F Service port G Wrench hole

(1) (2)

A A

H H

F F

B B

C C

G G

I I

E E

D D

H Double spanner section

(Do not apply a spanner other than to this section. Doing

so would cause coolant leaks.) I Seal section (Seal the end of the heat insulation material at the pipe

connection section with whatever seal material you

have on hand so that water does not inltrate the heat

insulation material.)

Fig. 4-12 Fig. 4-13

* The gure to the left is an example

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

model. * Turn section A only. (Do not further tighten sections A and

B together.)

C Charge hose D Service port

4.5. Stop valve opening method

The stop valve opening method varies according to the outdoor unit model. Use the appropriate method to open the stop valves. (1) Gas side (Fig. 4-12)

1 Remove the cap and turn the valve rod counterclockwise as far as it will go with

the use of a 5 mm hexagonal wrench. Stop turning when it hits the stopper. (ø15.88: Approximately 13 revolutions)

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

original position.

(2) Liquid side (Fig. 4-13)

1 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.

(ø9.52: Approximately 10 revolutions)

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

the cap back to its original position.

Refrigerant pipes are protectively wrapped

• The pipes can be protectively wrapped up to a diameter of ø90 before or after connecting 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 remain. (If the gaps are not closed, noise may be emitted or water and dust will enter the unit and breakdown may result.)

Warning:

When installing the unit, securely connect the refrigerant pipes before starting the compressor.

Precautions when using the charge valve (Fig. 4-14)

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 B in the desired direction, turn section A only and tighten it. Do not further tighten sections A and B together after tightening section A.

Fig. 4-14

4.6. Additional refrigerant charge

Additional refrigerant charge

Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory. Therefore, charge each refrigerant piping system with additional refrigerant at the installation site. In addition, in order to carry out service, enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the “Refrigerant amount” plate on the outdoor unit.

Calculation of additional refrigerant charge

• Calculate the additional charge using the liquid pipe size and length of the extended piping.

• Calculate the additional refrigerant charge using the procedure shown to the right, and charge with the additional refrigerant.

• For amounts less than 0.1 kg, round up the calculated additional refrigerant charge.

(For example, if the calculated charge is 32.92 kg, round up the charge to 33.0

kg.)

Calculation of refrigerant charge

Pipe size Liquid pipe

ø6.35 ø9.52 ~ 8.0 kW 1.5 kg (m) × 19.0 (g/m) (m) × 50.0 (g/m) 8.1 ~ 16.0 kW 2.5 kg

Included refrigerant amount when shipped from the factory

Included refrigerant amount

3.5 kg

Calculation example (Please see the lower half of Fig. 4-1.)

Outdoor model : SP140 A : ø9.52 [3/8"]/ø 1: P100 (11.2 kW) 2: P40 (4.5 kW)

The total length of each pipe size is as follows:

[3/8"]/ø15.88 [5/8"

ø9.52

[3/8"]/ [1/4"]/

ø15.88 ø12.7

ø9.52 ø6.35

The total capacity of connected indoor unit is as follows:

11.2 + 4.5 = 15.7 Therefore, the additional charge is as follows:

= 10 ×

= 5.0 kg

Pipe size Liquid pipe

b : ø6.35 [1/4"]/ø12.7 [1/2"]

19.0

1000 1000

a : ø9.52 [3/8"]/ø15.88 [5/8"]

] : A = 30 m

[5/8"]

: a = 15 m

[1/2"]

: b = 10 m

+ (30 + 15) ×

connected indoor units

15.88 [5/8"

50.0 + 2.5

Total capacity of

16.1 ~ 20.4 kW 3.0 kg

] : 30 m

15 m

10 m

Amount for the

indoor units

For these piping lengths

5. 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-SH97DP-E

6. Electrical work

6.1. Caution

1 Follow ordinance of your governmental organization for technical standard related

to electrical equipment, wiring regulations and guidance of each electric power company.

2 Wiring for control (hereinafter referred to as transmission line) shall be (5 cm or

more) apart from power source wiring so that it is not inuenced by electric noise from power source wiring. (Do not insert transmission line and power source wire in the same conduit.)

3 Be sure to provide designated grounding work to outdoor unit. 4 Give some allowance to wiring for electrical part box of indoor and outdoor units,

because the box is sometimes removed at the time of service work.

5 Never connect the main power source to terminal block of transmission line. If

connected, electrical parts will be burnt out.

6 Use 2-core shield cable for transmission line. If transmission lines of different

systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations.

7 Only the transmission line specied should be connected to the terminal block for

outdoor unit transmission.

(Transmission line to be connected with indoor unit : Terminal block TB3 for

transmission line, Other : Terminal block TB7 for centralized control)

Erroneous connection does not allow the system to operate.

8 In case to connect with the upper class controller or to conduct group operation in

different refrigerant systems, the control line for transmission is required between the outdoor units each other.

Connect this control line between the terminal blocks for centralized control. (2-

wire line with no polarity)

When conducting group operation in different refrigerant systems without connect-

ing to the upper class controller, replace the insertion of the short circuit connector

from CN41 of one outdoor unit to CN40. 9 Group is set by operating the remote controller. 0 When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor

unit, refer to the installation manual for the CONNECTION KIT. 1 When connecting a branch box, be sure to turn on the indoor units and the branch

box before turning on the outdoor unit. 2 Use the strap on the unit to sufciently fasten the cables connected to the termi-

nal blocks. In addition, make sure that the fastened cables and the strap do not

interfere with the panels.

<PUMY-SP·VKM>

TB1

B1 B2

TB1

M1SM2 M1SM2

B1 B2

TB1B

A B

<PUMY-SP·YKM>

L2 L3

A Power source B Power supply for branch box C Screw on the electrical component box D Transmission line

TB3 TB7

M1SM2 M1SM2

TB3 TB7

E Ground for the terminal block (TB3) F Screw on the electrical component box

Fig. 6-1

6.2. Control box and connecting position of wiring (Fig. 6-1)

1. Connect the indoor unit transmission line to transmission terminal block (TB3), or

connect the wiring between outdoor units or the wiring with the centralized control

system to the centralized control terminal block (TB7). When using shielded wiring, connect shield ground of the indoor unit transmission

line to the screw (F) and connect shield ground of the line between outdoor units

and the centralized control system transmission line to the shield (S) terminal of

the centralized control terminal block (TB7). In addition, in the case of outdoor

units whose power supply connector CN41 has been replaced by CN40, the shield

terminal (S) of terminal block (TB7) of the centralized control system should also

be connected to the screw (F) using attached lead wire.

2. Conduit mounting plates (ø27) are being provided. Pass the power supply and

transmission wires through the appropriate knock-out holes, then remove the

knock-out piece from the bottom of the terminal block and connect the wires.

3. Fix power source wiring to the terminal block by using buffer bushing for tensile

force (PG connection or the like).

4. The terminal block (TB1B) is for supplying power to the branch box (220

VAC. max 6 A).

Caution: Never connect the transmission line for the indoor unit or the centralized control system transmission line to this terminal block (TB1B). If the transmission lines are connected, the indoor unit or centralized control could be damaged.

– 240

6. Electrical work

6.3. Wiring transmission cables

1 Types of control cables

1. Wiring transmission cables

• Types of transmission cables: Shielding wire CVVS, CPEVS or MVVS

• Cable diameter: More than 1.25 mm

• Maximum wiring length: Within 200 m

2. M-NET Remote control cables Kind of remote control cable Shielding wire CVVS, CPEVS or MVVS

Cable diameter 0.5 to 1.25 mm

Remarks

When 10 m is exceeded, use cable with the same specications as transmission line wiring cables.

(0.75 to 1.25 mm2)*

* Connected with simple remote controller.

3. MA Remote control cables

Kind of remote control cable Sheathed 2-core cable (unshielded) CVV

Cable diameter 0.3 to 1.25 mm

(0.75 to 1.25 mm2)*

Remarks Within 200 m

* Connected with simple remote controller.

2 Wiring examples

• Controller name, symbol and allowable number of controllers. Name Symbol Allowable number of controllers

Outdoor unit controller OC –

PUMY-SP112 1 to 9 units per 1 OC *1

M-IC

Indoor unit controller

A-IC

PUMY-SP125 1 to 10 units per 1 OC *1 PUMY-SP140 1 to 12 units per 1 OC *1 PUMY-SP112

2 to 8 units per 1 OC *1PUMY-SP125

PUMY-SP140

Branch box – – 0 to 2 units per 1 OC

Maximum of 12 control-

Remote controller RC

M-NET RC *2, *3

lers for 1 OC (Can not be connected if Branch box is used.)

MA-RC Maximum of 2 per group

Note: *1. The number of connectable units may be limited by some conditions such

as an indoor unit’s capacity or each unit’s equivalent power consumption.

*2. Don’t use the Lossnay controller (PZ-61DR-E, PZ-43SMF-E, PZ-52SF-E,

PZ-60DR-E).

*3. An ME remote controller can not be connected to a system that contains

a branch box.

Example of a group operation system with multiple outdoor units (Shielding wires and address setting are necessary.)

■ Refer to Fig. 6-6 from Fig. 6-2.

<Wiring Method and Address Settings> a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, and IC-IC wiring intervals. b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2

and terminal S on the transmission cable block of the indoor unit (IC).

c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the same group to the terminal

block on the remote controller (RC). d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC). e. The jumper connector CN41 on the control panel does not change.

Connect shield ground of the indoor units transmission line to the shield (S) terminal of (TB3) and also connect (S) terminal to the screw (E or F) using attached lead wire.

f. Connect shield ground of the line between outdoor units and the centralized control system transmission line to the shield (S) terminal of (TB7). g. Set the address setting switch as follows.

Unit Range Setting Method

M-IC (Main) 01 to 50 Use the most recent address within the same group of indoor units

M-IC (Sub) 01 to 50

Outdoor unit 51 to 100

M-NET RC (Main) *1 101 to 150 Set at an IC (Main) address within the same group plus 100

M-NET RC (Sub) *1 151 to 200 Set at an IC (Main) address within the same group plus 150

MA RC — Unnecessary address setting (Necessary main/sub setting)

*1 An ME remote controller cannot be connected to a system that contains a branch box.

Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be in sequence with the IC (Main)

Use the most recent address of all the indoor units plus 50 * The address automatically becomes “100” if it is set as “01 - 50”.

h. The group setting operations among the multiple indoor units is done by the remote controller (M-NET RC) after the electrical power has been turned on. <Permissible Lengths>

M-NET Remote controller

• Max length via outdoor units: L

• Max transmission cable length: L

• Remote controller cable length:

1+L2+L3+L4

and L1+L2+L3+L5 and L1+L2+L6+L7 [ 500 m (1.25 mm² or more)

and L3+L4 and L3+L5 and L2+L6 and L7 [ 200 m (1.25 mm² or more)

[ 10 m (0.5 to 1.25 mm²)

If the length exceeds 10 m, use a 1.25 mm² shielded wire. The length of this section (L

) should be included in the calculation of the

maximum length and overall length.

MA Remote controller

• Max length via outdoor unit (M-NET cable): L

• Max transmission cable length (M-NET cable): L

• Remote controller cable length:

and

1+L2+L3+L4

and L1+L2+L6+L7 [ 500 m (1.25 mm² or more)

and L3+L4 and L2+L6 and L7 [ 200 m (1.25 mm² or more)

and

[ 200 m (0.3 to 1.25 mm²)

+ 37 hidden pages

Mitsubishi Electric PUMY-SP112, PUMY-SP125, PUMY-SP140VKM Installation guide

Specifications and Main Features

Frequently Asked Questions

User Manual