Mitsubishi Electric PUMY-P112VKM1, PUMY-P125VKM1, PUMY-P140VKM1, PUMY-P112YKM1, PUMY-P125YKM1 INSTALLATION MANUAL

...

Air-Conditioners PUMY-P112, P125, P140VKM1 PUMY-P112, P125, P140YKM1

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.

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

English (GB)

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Dansk (DA)

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Türkçe (TR)

Русский (RU)

Contents

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

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

3. Installing the outdoor unit ..........................................................................6

4. Installing the refrigerant piping ..................................................................6

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.

5. Drainage piping work ............................................................................... 11

6. Electrical work ......................................................................................... 11

7. Test run ....................................................................................................18

Conﬁrmation of parts attached

In addition to this manual, the following parts are supplied with the outdoor unit. They are used for grounding the S terminals of transmission terminal blocks TB3, TB7. For details refer to “6. Electrical work”.

<PUMY-P112-140YKM1>

Grounding lead wire (× 2)

<PUMY-P112-140VKM1>

Grounding lead wire with a ferrite core for TB3

Grounding lead wire without a ferrite core for TB7

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

and light-industrial environment. ► PUMY-P·YKM series is designed as professional equipment.

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

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.

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.

• 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 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 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 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.

• 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 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 ﬁre.

• 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 refrigerant leaks into the room and comes into contact with the ﬂame 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 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 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 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.

• 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 sufﬁcient capacity. Otherwise, a short circuit, overheating, or ﬁre 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.

• 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.

• 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.

• 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.

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 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 deterioration 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.

• 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.

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 efﬁciency will be lowered.

2. Installation location

330+30

1050

1338

225

600

Fig. 2-1

Table 2

Connectable indoor units quantities PUMY-P112 1-10 PUMY-P125 1-12 PUMY-P140 1-12*

Connectable indoor units quantities via Branch Box

PUMY-P112 2-8 PUMY-P125 2-8 PUMY-P140 2-8

Table 3 PWFY unit speciﬁcations

Model PWFY-P100VM-E-AU

Temp. range of

Heating

Temp. range of

Cooling

Outdoor temp. –15 to 21°C (DB), –15 to 15°C (WB) Inlet Water temp. 10 to 45°C Outdoor temp. – Inlet Water temp. –

SW1

12345678910

SW4

12345678910

Fig. 2-2

370

2.1. Refrigerant pipe

Refer to Fig. 4-1.

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, ﬂow, 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 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.

(mm)

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 (PUMY-P112:15-125) 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.

Veriﬁcation

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-P112 6.3 - 16.2 kW

• PUMY-P125 7.1 - 18.2 kW

• PUMY-P140 8.0 - 20.2 kW

Table 1-1 (P*FY series (For Building Application indoor unit))

Indoor unit type Rated capacity (Cooling) (kW)

Table 1-2 (M*Z series)

Indoor unit type 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.

* When all the indoor units are 1.7 kW models, 12 indoor units can be connected to

1 outdoor unit.

P15 P20 P25 P32 P40 P50 P63 P71 P80 P100 P125 P140

1.7 2.2 2.8 3.6 4.5 5.6 7.1 8.0 9.0 11.2 14.0 16.0

15 20 22 25 35 42 50 60 71 80

1.5 2.0 2.2 2.5 3.5 4.2 5.0 6.0 7.1 8.0

2.4. Connecting a PWFY Unit

When using a PWFY unit as an indoor unit, be aware of the following points because the PWFY unit is different from other indoor units.

2.4.1. Connection restrictions

• Only 1 PWFY-P100VM-E-AU can be connected. PWFY-P200VM-E-AU and PWFYP100VM-E-BU cannot be connected.

• The PWFY unit cannot be the only unit connected to an outdoor unit. Select an outdoor unit so that the total rated capacity of the indoor units, excluding the PWFY unit, is 50–100% of the outdoor unit capacity.

Limits for the total rated capacity of the indoor units when connecting a PWFY unit

• PUMY-P112 (1 PWFY unit + Non-PWFY units [6.3–12.5 kW])

• PUMY-P125 (1 PWFY unit + Non-PWFY units [7.1–14.0 kW])

• PUMY-P140 (1 PWFY unit + Non-PWFY units [8.0–15.5 kW])

2.4.2. Indoor unit speciﬁcations

When connecting a PWFY unit to a PUMY unit, the following speciﬁcations will change.

• The PWFY unit can operate only in heating mode. The PWFY unit cannot operate in cooling mode. However, the indoor units other than the PWFY unit can operate in cooling mode.

• The other indoor units cannot operate at the same time as the PWFY unit.

• The operation of the PWFY unit has priority. When the PWFY unit is in the operation mode, the other indoor units will stop.

• The temperature setting of the remote controller is the target value for the outlet water temperature.

2.4.3. Switch settings (Fig. 2-2)

When connecting a PWFY unit to a PUMY unit, set DIP switches SW1-1, SW4-2, and SW4-6 of the PWFY unit to ON.

2.4.4. Test run

If the test run is carried out using the outdoor unit switches, the PWFY unit will not operate. Carry out the test run using the PWFY unit switches or the remote controller. For information about carrying out the test run, refer to the data book or the service manual for the PWFY unit.

2.4.5. Refrigerant collecting (Pump down)

Step  in the pump down procedure instructs the user to “operate all indoor units in cooling mode”. However, the PWFY unit will not operate in cooling mode. Operate all of the indoor units, excluding the PWFY unit, in cooling mode.

2. Installation location

2.5. Ventilation and service space

2.5.1. 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.

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

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

3 Obstacles at rear and sides only (Fig. 2-5) 4 Obstacles at front only (Fig. 2-6)

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

5 Obstacles at front and rear only (Fig. 2-7)

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

6 Obstacles at rear, sides, and above only (Fig. 2-8)

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

Max.500

150

300

Fig. 2-4

2.5.2. When installing multiple outdoor units

Leave 25 mm space or more between the units.

1 Obstacles at rear only (Fig. 2-9) 2 Obstacles at rear and above only (Fig. 2-10)

• 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.

3 Obstacles at front only (Fig. 2-11)

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

4 Obstacles at front and rear only (Fig. 2-12)

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

5 Single parallel unit arrangement (Fig. 2-13)

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

mm or more.

6 Multiple parallel unit arrangement (Fig. 2-14)

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

mm or more.

7 Stacked unit arrangement (Fig. 2-15)

• 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.

1000

200

300

Fig. 2-6Fig. 2-5Fig. 2-3

1000

Fig. 2-7

1500

1000

Max.300

Fig. 2-10

150

1500

500

250

Max.500

250

Fig. 2-8

1500

500

Fig. 2-9

1500

Fig. 2-11 Fig. 2-12

300

500

1500

500

1500

1000

600

2000

150

3000

600

1500

Fig. 2-13 Fig. 2-14 Fig. 2-15

150

800

2. Installation location

Fig. 2-16 Fig. 2-17

3. Installing the outdoor unit

Max.30

A M10 (3/8") bolt B Base C As long as possible. D Vent E Set deep in the ground.

600 600Min.475

(mm)

2.5.3. 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 airﬂow 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. 2-16)

A Air guide

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

direction, if possible. (Fig. 2-17)

B Wind direction

• 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 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 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.

330

370

Min.25

225 225

1050

Fig. 3-1

4. Installing the refrigerant piping

4.1. 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 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.

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.

• 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

ahb c d

A+B+C+D+a+b+c+d+e  300 m L = A+B+C+D+e  150 m ℓ = B+C+D+e  30 m H  50 m (Outdoor lower H  40 m) h  15 m

B C

ℓ

4.2. Pipe length and height difference

4.2.1. Connection without Branch Box (Fig. 4-1)

A (mm)

È Liquid pipe É Gas pipe

PUMY-P112-140 ø9.52 ø15.88

B, C, D (mm)

Ê Total capacity of indoor units È Liquid pipe É Gas pipe

ø9.52 ø15.88

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

Ë Model number È Liquid pipe É Gas pipe

A+a+b+c+d+e+f  300 m L = A+f  150 m, ℓ = f  30 m H  50 m (Outdoor lower H  40 m)

h  15 m

c d e f

ℓ

A : Outdoor Unit B : First Branch C : Indoor unit D : Cap

15, 20, 25, 32, 40, 50 ø6.35 ø12.7 63, 80, 100, 125, 140 ø9.52 ø15.88

Ì Branch kit model

CMY-Y62-G-E

Í 4-Branching header Î 8-Branching header

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

* 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.

Fig. 4-1

 Outdoor unit



 Branch box  Indoor unit







  

a4a3a2



a6a5

 

a7 a8



4.2.2. Connection with Branch Box (Fig. 4-2)

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.

Fig. 4-2

Total piping length

Permissible

length

(one-way)

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

Permissible

height differ-

ence

(one-way)

In indoor/outdoor section (H)*1

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

Number of bends

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

c1 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8  150 m c1 + b2 + a8  80 m (b2  55 m, a8  25 m) c1 + b1 + b2  55 m b2  30 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  40 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

4. Installing the refrigerant piping

N In case of using 1-branch box

Flare connection employed. (No. brazing)

Branch box

BB B BB

N In case of using 2-branch boxes

2 branches pipe (joint) : optional parts.

BB B BB

Branch box #2

Branch box #1

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

 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

Fig. 4-4

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

4.3. Selecting pipe size

4.3.1. Connection without Branch Box

Indoor unit Outdoor unit

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

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

4.3.2. Connection with Branch Box (Fig. 4-3)

A B

Liquid (mm) ø9.52

Gas (mm) ø15.88

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

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

N Installation procedure (2 branches pipe (Joint))

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

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

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

unit type

Liquid

Pipe size (ømm)

Gas

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

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

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

a gas leakage or even a pipe extraction may occur.

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

Indoor unit type Pipe size (ømm)

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

to the indoor unit.

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

leakage or even a pipe extraction may occur.

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

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

Connected pipes diameter Diameter A Diameter B

Liquid ø9.52

Gas ø15.88

ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7

(kW)

Liquid ø6.35 ø6.35 ø9.52 ø9.52 ø9.52

Gas ø12.7 ø12.7 ø15.88 ø15.88 ø15.88

15-50 63-140 112-140

The piping connection size differs according to the type 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.)

mm mm mm

Insulation material

Heat resisting foam plastic

0.045 speciﬁc gravity

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

ø15.88 *ø15.88 ø15.88

50 60 71

100

4. Installing the refrigerant piping

45°± 2°

øA

90°± 0.5°

A Flare cutting dimensions B Flare nut tightening torque

A (Fig. 4-5)

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

B (Fig. 4-5)

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

R0.4 - R0.8

Fig. 4-5

Flare dimensions

øA dimensions (mm)

Flare nut O.D.

(mm)

Tightening torque

(N·m)

4.4. Connecting pipes (Fig. 4-5)

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

• Conduct sufﬁcient 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 ﬁlling all gaps.

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

burns when contacting the piping.)

• The indoor parts of the drain pipe should be wrapped with polyethylene foam insulation 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. A

• Use two 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 ﬂare seat surface. C

• Use the ﬂare nuts for the following pipe size. D

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

• 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

(Applied on site).

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

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

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

A Front piping cover B Piping cover C Stop valve D Service panel E Bend radius : 100 mm - 150 mm

Fig. 4-6

Fig. 4-7

A Die B Copper pipe

* To connect the CONNECTION KIT (PAC-LV11M-J), refer to the installation manual

for the CONNECTION KIT.

Table 3 (Fig. 4-6)

Copper pipe O.D. (mm)

ø6.35 0 - 0.5 1.0 - 1.5 ø9.52 0 - 0.5 1.0 - 1.5

ø12.7 0 - 0.5 1.0 - 1.5 ø15.88 0 - 0.5 1.0 - 1.5 ø19.05 0 - 0.5 1.0 - 1.5

Flare tool for R410A Flare tool for R22·R407C

A (mm)

Clutch type

4.5. Refrigerant piping (Fig. 4-7)

Remove the service panel D (three screws) and the front piping cover A (two screws) and rear piping cover B (two 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 4.6. 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. Installing the refrigerant piping

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

(1) 1

(2) 1

F Sealed, same way for gas side G Pipe cover H Do not use a wrench here.

Refrigerant leakage may result. I Use two wrenches here.

Fig. 4-8

Fig. 4-9

4.6. 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 speciﬁed pressure all at once; add pressure little by lit-

tle.

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

G), wait ﬁve minutes, and make sure the

G) and measure the surrounding tem-

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

G). Make the necessary corrections.

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

of the gas leak.

4.7. Stop valve opening method

(1) Gas side (Fig. 4-9) 1 Remove the cap, pull the handle toward you and rotate 1/4 turn in a counterclock-

wise direction to open.

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

the cap back to its original position. (2) Liquid side (Fig. 4-10) 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. (ø6.35: Approximately 4.5 revolutions) (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.

A Valve

B Unit side

C Handle

D Cap

E Local pipe side

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.)

F Open position side G Service port H Wrench hole I Refrigerant ﬂow direction

Fig. 4-10

Fig. 4-11

* 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 A only. (Do not further tighten sections A and

B together. )

C Charge hose D Service port

Precautions when using the charge valve (Fig.4-11)

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.

4. Installing the refrigerant piping

4.8. 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 and total capacity of connected indoor units.

• 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 6.01 kg, round up the charge to 6.1 kg.)

5. Drainage piping work

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

4.8 kg

<Example> Outdoor model : P125 Indoor 1 : P63 (7.1 kW) A : ø9.52 30 m a : ø9.52 15 m 2 : P40 (4.5 kW) b : ø6.35 10 m 3 : P25 (2.8 kW) c : ø6.35 10 m 4 : P20 (2.2 kW) d : ø6.35 20 m The total length of each liquid line is as follows: ø9.52 : A + a = 30 + 15 = 45 m ø6.35 : b + c + d = 10 + 10 + 20 = 40 m The total capacity of connected indoor unit is as follows:

7.1 + 4.5 + 2.8 + 2.2 = 16.6 <Calculation example> Additional refrigerant charge

19.0

40 ×

1000 1000

+ 45 ×

Pipe size Liquid pipe

50.0

+ 3.0 = 6.1 kg (rounded up)

Total capacity of

connected indoor units

16.1 kW ~ 3.0 kg

Amount for the

indoor units

At the conditions below:

Outdoor unit drainage pipe connection

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

P112-140 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 inﬂuenced 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 speciﬁed 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.

A When connecting a branch box, be sure to turn on the indoor units and the branch

box before turning on the outdoor unit.

6. Electrical work

<PUMY-P·VKM>

<PUMY-P·YKM>

B1 B2

TB1B

M1SM2

TB3TB1 TB7

M1SM2L

L2 L3

TB1

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

B1 B2

TB1B

M1SM2 M1SM2

TB3 TB7

E : Screw on the electrical component box F : Screw on the electrical component box

Fig. 6-1

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 speciﬁcations as transmission line wiring cables.

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 (E or 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) shield (S) terminal. 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 E or 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 box and connect the wires.

3. Fix power source wiring to terminal box by using buffer bushing for tensile force (PG connection or the like).

4. The terminal bed (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 bed (TB1B). If the transmission lines are connected, the indoor unit terminal block or centralized control terminal block could be damaged.

3. MA Remote control cables

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

Cable diameter 0.3 to 1.25 mm2 (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 –

Indoor unit controller IC

Remote controller RC

PUMY-P112 1 to 10 units per 1 OC PUMY-P125 1 to 12 units per 1 OC PUMY-P140 1 to 12 units per 1 OC

(M-NET)

MA Maximum of 2 per group

Maximum of 12 controllers for 1 OC

~ 240

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

N M-NET Remote Controller (Fig. 6-2) N MA Remote Controller (Fig. 6-3)

<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 terminal 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. f. Connect shield ground of the indoor units transmission line to the shield (S) terminal of (TB3) and also connect (S) terminal to screw 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

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

IC (Sub) 01 to 50

Outdoor Unit 51 to 100

M-NET R/C (Main) 101 to 150 Set at an IC (Main) address within the same group plus 100

M-NET R/C (Sub) 151 to 200 Set at an IC (Main) address within the same group plus 150

MA R/C – Unnecessary address setting (Necessary main/sub setting)

h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on. i. When connecting a PWFY unit

• Do not perform the group settings for the PWFY unit and the indoor units.

• The PWFY unit and a Lossnay unit cannot be set to operate at the same time.

• Use a WMA remote controller for the PWFY unit. For details, refer to the installation manual for the PWFY unit.

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”.

E or F using attached lead wire.

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