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 INSTALLER

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

INSTALLATIONSHANDBUCH
	FÜR INSTALLATEURE

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

MANUEL D’INSTALLATION
	POUR L’INSTALLATEUR

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
	VOOR DE INSTALLATEUR

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

MANUAL DE INSTALACIÓN
	PARA EL INSTALADOR

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 L’INSTALLATORE

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 ΓΙΑΑΥΤΟΝΠΟΥΚΑΝΕΙΤΗΝΕΓΚΑΤΑΣΤΑΣΗ

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 O INSTALADOR

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	TIL INSTALLATØREN

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

INSTALLATIONSMANUAL	FÖR INSTALLATÖREN

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

MONTAJ ELKİTABI
	MONTÖR İÇİN

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

РУКОВОДСТВО ПО УСТАНОВКЕ	ДЛЯ УСТАНОВИТЕЛЯ

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

INSTALLASJONSHÅNDBOK	FOR MONTØR

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

INSTRUKCJA MONTAŻU	DLA INSTALATORA

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

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Contents

1.	Safety precautions.....................................................................................	2	5.	Drainage piping work...............................................................................	15
2.	Installation location....................................................................................	4	6.	Electrical work..........................................................................................	15
3.	Installing the outdoor unit...........................................................................	7	7.	Test run....................................................................................................	24
4.	Installing the refrigerant piping...................................................................	7	8.	Special functions......................................................................................	25

Caution:

• Do not vent R410A into the atmosphere.

Confirmation 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”.

<![if ! IE]>

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Grounding lead wire

1. Safety precautions

		Afterinstallationworkhasbeencompleted,explainthe“SafetyPrecautions,”use,and
► Before installing the unit, make sure you read all the “Safety precau-
		maintenance of the unit to the customer according to the information in the Operation
tions”.
		Manual and perform the test run to ensure normal operation. Both the Installation
► Please report to or take consent by the supply authority before connec-
		Manual and Operation Manual must be given to the user for keeping.These manuals
tion to the system.
► PUMY-SP·VKM series complying with IEC/EN 61000-3-12		must be passed on to subsequent users.
► PUMY-SP·VKM series is designed for use in the residential, commercial					: Indicates a part which must be grounded.
and light-industrial environment.
► PUMY-SP·YKM series is designed as professional equipment.					Warning:
Warning:		Carefully read the labels affixed to the main unit.
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
Warning:		• Use only specified cables for wiring. The wiring connections must be made
• 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,			securely with no tension applied on the terminal connections. Also, never
electric shock, or fire may result.			splice the cables for wiring (unless otherwise indicated in this document).
• This appliance is intended to be used by expert or trained users in shops, in			Failure to observe these instructions may result in overheating or a fire.
light industry and on farms, or for commercial use by lay persons.		• The terminal block cover panel of the outdoor unit must be firmly attached. If
• For installation work, follow the instructions in the Installation Manual and			the cover panel is mounted incorrectly and dust and moisture enter the unit,
use tools and pipe components specifically made for use with R410A refrig-			electric shock or fire may result.
erant. The R410A refrigerant in the HFC system is pressurized 1.6 times the		• Theapplianceshallbeinstalledinaccordancewithnationalwiringregulations.
pressure of usual refrigerants. If pipe components not designed for R410A		• If the supply cord is damaged, it must be replaced by the manufacturer, its
refrigerant are used and the unit is not installed correctly, the pipes may burst			service agent or similarly qualifiied persons in order to avoid a hazard.
and cause damage or injuries. In addition, water leakage, electric shock, or		• When installing or relocating, or servicing the air conditioner, use only the
fire may result.			specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with
• The unit must be installed according to the instructions in order to minimize			any other refrigerant and do not allow air to remain in the lines.
the risk of damage from earthquakes, typhoons, or strong winds. An incor-			If air is mixed with the refrigerant, then it can be the cause of abnormal high
rectly installed unit may fall down and cause damage or injuries.			pressure in the refrigerant line, and may result in an explosion and other
• The unit must be securely installed on a structure that can sustain its weight.			hazards.
If the unit is mounted on an unstable structure, it may fall down and cause			The use of any refrigerant other than that specified for the system will cause
damage or injuries.			mechanical failure or system malfunction or unit breakdown. In the worst
• If the air conditioner is installed in a small room, measures must be taken to			case, this could lead to a serious impediment to securing product safety.
prevent the refrigerant concentration in the room from exceeding the safety		• Use only accessories authorized by Mitsubishi Electric and ask a dealer or an
limit in the event of refrigerant leakage. Consult a dealer regarding the appro-			authorized technician to install them. If accessories are incorrectly installed,
priate measures to prevent the allowable concentration from being exceeded.			water leakage, electric shock, or fire may result.
Should the refrigerant leak and cause the concentration limit to be exceeded,		• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs are
hazards due to lack of oxygen in the room may result.			not performed correctly, water leakage, electric shock, or fire may result.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes		• The user should never attempt to repair the unit or transfer it to another loca-
into contact with a flame, poisonous gases will be released.			tion. If the unit is installed incorrectly, water leakage, electric shock, or fire
• All electric work must be performed by a qualified technician according to			may result. If the air conditioner must be repaired or moved, ask a dealer or
local regulations and the instructions given in this manual. The units must be			an authorized technician.
poweredbydedicatedpowerlinesandthecorrectvoltageandcircuitbreakers		• After installation has been completed, check for refrigerant leaks. If refriger-
must be used. Power lines with insufficient capacity or incorrect electrical			ant leaks into the room and comes into contact with the flame of a heater or
work may result in electric shock or fire.			portable cooking range, poisonous gases will be released.
• 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.

2

1. Safety precautions

1.1. Before installation

Caution:

•Donotusetheunitinanunusualenvironment.Iftheairconditionerisinstalled 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 suretoprovidedrainagearoundtheoutdoorunitifsuchcondensationislikely to cause damage.

•Wheninstallingtheunitinahospitalorcommunicationsoffice,bepreparedfor 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 medicalequipment,disturbingmedicalcare,andcommunicationsequipment, harming the screen display quality.

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.

•Besure 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.

•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.

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•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 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.

•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.

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

4.1.) 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 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 flared sections. If mineral oil is mixed in the refrigeration oil, oil deterioration 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.

3

2. Installation location

330+40	(mm)
	1050

<![if ! IE]> <![endif]>GB	<![if ! IE]> <![endif]>981

225

600

370

Fig. 2-1

Table 2 Connectable indoor units quantities

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, 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.

•Avoidlocationswheretheunitcanbecoveredbysnow.Inareaswhereheavysnow 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.

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.

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-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	15	20		22		25		28			32			36			40			45			50		56		63
Rated capacity	1.7	2.2		2.5		2.8		3.2			3.6		4.0				4.5			5.0			5.6		6.3		7.1
(Cooling) (kW)
Indoor unit type	71	80		100		125		140
Rated capacity	8.0	9.0		11.2		14.0		16.0
(Cooling) (kW)
Table 1-2 M series, P series, S series
Indoor unit type	15		20		22		25		35			42				50			60			71			80	100
Rated capacity	1.5		2.0		2.2		2.5		3.5			4.2			5.0				6.0			7.1			8.0	10.0
(Cooling) (kW)

Model	Only system			Mixed system
	Only City Multi indoor units	Only M series, P series,	One Branch box		Two Branch box
	(Connection without Branch	S series indoor units	Connection with	City Multi indoor	Connection with	City Multi indoor
	box)	(Connection with Branch box)	Branch box	units	Branch box	units
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

*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.

4

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-P25VMA3-E × 1	PEFY-P32VMA3-E × 2
OK		+	+		+
		PEFY-P32VMA3-E × 2		PEFY-P32VMA3-E × 3	PEFY-P40VMA3-E × 2
		All combinations excluding the above	All combinations excluding the above		All combinations excluding the above
		combinations	combinations		combinations
		Ex. 1: PEFY-P25VMA3-E × 2	Ex. 1: PEFY-P32VMA3-E × 3		Ex. 1: PEFY-P32VMA3-E × 3
		+	+		+
		PEFY-P32VMA-E × 2		PEFY-P32VMA-E × 1	PEFY-P40VMA-E × 1
		Ex. 2: PEFY-P25VMA3-E × 2	Ex. 2: PEFY-P32VMA3-E × 3		Ex. 2: PEFY-P32VMA3-E × 2
		+	Ex. 3: PEFY-P25VMA3-E × 2		+
NO		PEFY-P32VMA3-E × 1			PEFY-P40VMA3-E × 1
			+
		Ex. 3: PEFY-P32VMA3-E × 4
				PEFY-P32VMA3-E × 2	Ex. 3: PEFY-P32VMA3-E × 4
		(A combination for a PUMY-SP125)		(A combination for a PUMY-SP112)	(A combination for a PUMY-SP125)
		Ex. 4: PEFY-P25VMA3-E × 2	Ex. 4: PEFY-P32VMA3-E × 3		Ex. 4: PEFY-P32VMA3-E × 3
		+	+		+
		PEFY-P32VMA3-E × 2		PLFY-P20VFM-E × 1	PCFY-P40VKM-E × 1
		+	+		+
		MSZ-FH25VE × 1		SEZ-KD25VA × 1	MSZ-SF15VA × 1
				Ex. 1: Aceiling-concealedunitotherthanaVMA3seriesisselected.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.

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.

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5

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 figures 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 airflow.

	<![if ! IE]> <![endif]>GB	.500	<![if ! IE]> <![endif]>1000
		Max

	150	300
Fig. 2-2
		Fig. 2-3

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 airflow.

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)

Whenusinganoptionalairoutletguideinstalledforupwardairflow,theclearanceis1000mm or more.

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

Whenusinganoptionalairoutletguideinstalledforupwardairflow,theclearanceis1500mm or more.

7 Stacked unit arrangement (Fig. 2-14)

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

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

UNIT: mm

200
200	300	1000*
Fig. 2-4		Fig. 2-5

150

1000*

Fig. 2-6

.500
Max	<![if ! IE]> <![endif]>1500

250

250	500

Fig. 2-7

300

Fig. 2-8

	.300	<![if ! IE]> <![endif]>1500
	Max
1500
Fig. 2-9		500

1500*

Fig. 2-10

500

1500*

Fig. 2-11

150 2000*

600

1000

Fig. 2-12

1500

500

3000* 600

Fig. 2-13

1500 Fig. 2-14

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800

6

2. Installation location

A

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 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

Bfrom a typhoon, etc. may directly enter the air outlet. (Fig. 2-15)

A Air guide

2Position the unit so that the air outlet blows perpendicularly to the seasonal wind direction, if possible. (Fig. 2-16)

B Wind direction

A

(mm)

E

C

B	D
<![if ! IE]> <![endif]>Max. 30
AM10 (3/8") bolt	DVent

BBase	ESet deep in the ground.
CAs long as possible.
	600		Min. 500		600

	<![if ! IE]> <![endif]>330	<![if ! IE]> <![endif]>370
225	<![if ! IE]> <![endif]>40
	225
Min. 25*	1050

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

Fig. 3-1

4. Installing the refrigerant piping

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

<Foundation specifications>
Foundation bolt	M10 (3/8″)
Thickness of concrete	120 mm
Length of bolt	70 mm	<![if ! IE]> <![endif]>GB
Weight-bearing capacity	320 kg

•Makesurethatthelengthofthefoundationboltiswithin30mmofthebottomsurface 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.

•Inadditiontotheunitbase,usetheinstallationholesonthebackoftheunittoattach 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.

4.1. Precautions for devices that use R410Arefrigerant

•Referto 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 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 pressureintherefrigerantline,andmayresultinanexplosionandotherhazards. 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.

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 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.

7

4. Installing the refrigerant piping

A

A

<![if ! IE]>

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B a

C

<![if ! IE]>

<![endif]>h

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

L

r

B

C

D

e

b

c

d

C

C

C

C

A

A

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<![if ! IE]> <![endif]>GB	<![if ! IE]> <![endif]>h

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

L

B

r

D

b

a

c

d

e

f

C

C

C

C

C

C

Fig. 4-1

A Outdoor unit

B First branch (CMY) C Indoor unit

D Cap

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

A	(mm)
A Liquid pipe	B Gas pipe
ø9.52	ø15.88

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

B, C, D	(mm)
A Liquid pipe	B Gas pipe
ø9.52	ø15.88

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

	a, b, c, d, e, f			(mm)
	D Model number	A Liquid pipe		B Gas pipe
	15, 20, 25, 32, 40, 50	a, b, c, d, e, f [ 30 m	ø6.35	ø12.7
		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 first joint exceeds 30 m, use a pipe size of ø9.52 for the pipes of the system that exceeds 30 m.

	E Branch kit model
	CMY-Y62-G-E
F 4-Branching header		G 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.

A Outdoor unit

B Branch box (PAC-MK∙BC(B))

A

C Indoor unit

D First branch (MSDD)

L

c1

D

b1

b2

B

B

h2

I

H

a1

h1

a5

a6

a7

a8

a2

a3

a4

C

C

C

C

C

C

h3

C

C

Fig. 4-2

4.1.2. 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.

		Total piping length	c1 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 120 m
Permissible		Farthest piping length (L)	c1 + b2 + a8 [ 80 m (b2 [ 55 m, a8 [ 25 m)
		Piping length between outdoor unit and branch boxes	c1 + b1 + b2 [ 55 m
length
		Farthest branch box from the first joint (b2)	b2	[ 50 m
(one-way)
		Farthest piping length after branch box (l)	a8	[ 25 m
		Total piping length between branch boxes and indoor units	a1	+ a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 95 m
Permissible		In indoor/outdoor section (H)*1	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)
height
		In branch box/indoor unit section (h1)	h1	+ h2 [ 15 m
difference
		In each branch unit (h2)	h2	[ 15 m
(one-way)
		In each indoor unit (h3)	h3	[ 12 m
Number of bends			| 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

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

8

4. Installing the refrigerant piping

■In case of using 1-branch box

Flare connection employed. (No. brazing)

L

Branch box (PAC-MK∙BC(B))

A

B B B B B

■ In case of using 2-branch boxes

		L
	2branchespipe(joint)(MSDD)
			: optional parts.
	A	A	Branch box #1 (PAC-MK∙BC(B))
			A
	B		B	B	B	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	Liquid pipe			ø6.35 mm
	Gas pipe			ø9.52 mm
B UNIT	Liquid pipe			ø6.35 mm
	Gas pipe			ø9.52 mm
C UNIT	Liquid pipe			ø6.35 mm
	Gas pipe			ø9.52 mm
D UNIT	Liquid pipe			ø6.35 mm
	Gas pipe			ø9.52 mm
E UNIT	Liquid pipe			ø6.35 mm
	Gas pipe			ø12.7 mm

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

			Conversion formula
			1/4 F	ø6.35
			3/8 F	ø9.52
A		B	1/2 F	ø12.7
			5/8 F	ø15.88
	Fig. 4-4		3/4 F	ø19.05
A (outside)			B (inside)

Fig. 4-5

Selecting pipe size (Fig. 4-3)

	A	B
		Thepipingconnectionsizediffersaccordingtothetype
Liquid (mm)	ø9.52	and capacity of indoor units. Match the piping connec-
		tion 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
Gas (mm)	ø15.88	optional different-diameter (deformed) joints to the
		branch box side. (Connect deformed joint directly to
		the branch box side.)

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	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. 4-5)

		Connected pipes diameter	Outside	Inside
	Model name		Diameter A	Diameter B
		mm	mm	mm
	PAC-SG78RJB-E	ø9.52 → ø12.7	ø9.52	ø12.7
	PAC-SG79RJB-E	ø12.7 → ø9.52	ø12.7	ø9.52
	PAC-SG80RJB-E	ø12.7 → ø15.88	ø12.7	ø15.88
	PAC-SG77RJB-E	ø6.35 → ø9.52	ø6.35	ø9.52
	PAC-SG76RJB-E	ø9.52 → ø15.88	ø9.52	ø15.88

2-branches 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

■Installation procedure (2 branches pipe (Joint))

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

■Pipe size (Outdoor unit-Branch box)

Pipe size	Liquid	ø9.52
(ømm)	Gas	ø15.88

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

■ Branch box

Model name	Number of connected units
PAC-MK3 BC(B)	3-branches (Max. 3 units)
PAC-MK5 BC(B)	5-branches (Max. 5 units)

Note: = 0, 1, 2, ....

ThePAC-MK31/32BC(B)andPAC-MK51/52BC(B)cannotbeconnected.

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

Indoor	(kW)	15 – 42	50		60		71 – 80
unit type
Pipe size	Liquid	ø6.35	ø6.35				ø9.52
(ømm)	Gas	ø9.52	ø12.7		ø15.88		ø15.88
* If the pipe size of indoor unit is different, use a different-diameter joint.
■ Pipe size (Branch box–Indoor unit) Case of P series indoor unit
Indoor	(kW)	35 – 50	60 – 100
unit type
Pipe size	Liquid	ø6.35	ø9.52
(ømm)	Gas	ø12.7	ø15.88

*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 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.

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9

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

A

L1

e1

Cd2B

d1

c1

<![if ! IE]> <![endif]>H

a1

a2

a3

c2

b2

E

E

<![if ! IE]> <![endif]>h1

E

<![if ! IE]> <![endif]>h3

E

E

L2

b1

D

a4 a5 a6 a7 a8

F F 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

			Permissible	Total piping length	e1 + d1 + d2 + c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [ 120 m
	<![if ! IE]> <![endif]>GB
			length (One-way)
				Farthest piping length (L1)	e1	+ d2 + a1 or e1 + d1 + c1 + b2 [ 70 m
				Farthest piping length. Via Branch box (L2)	e1	+ d1	+ c1 + b1 + a8 [ 80 m
				Piping length between outdoor unit and branch box	e1	+ d1	+ c1 + b1 [ 55 m
				Farthest piping length from the first joint	d1	+ c1 + b1 or d2 + a1 [ 50 m
				Farthest piping length after branch box	a8	[ 25 m
				Total piping length between branch boxes and indoor units	a4	+ a5	+ a6 + a7 + a8 [ 95 m
			Permissible	In indoor/outdoor section (H) *1	H [ 50 m (In case of outdoor unit is set higher than indoor unit)
			height difference		H [ 30 m (In case of outdoor unit is set lower than indoor unit)
			(One-way)	In branch box/indoor unit section (h1)	h1	[ 15 m
				In each indoor unit (h3)	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

A

L1

d1

L2

c1B

C

c2

b2

b1

D

D

<![if ! IE]> <![endif]>H

<![if ! IE]> <![endif]>h2

a2

a3

a1

<![if ! IE]> <![endif]>h1

a4

a5

a6

a7

a8

a9

a10

a11

E

E

F

F

F

E

<![if ! IE]> <![endif]>h3

F

F

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

	Permissible	Total piping length	d1	+ c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 [ 120 m
	length (One-way)
		Farthest piping length (L1)	d1	+ c1	+ a1 [ 70 m
		Farthest piping length. Via Branch box (L2)	d1	+ c2	+ b2 + a11 [ 80 m
		Piping length between outdoor unit and branch boxes	d1	+ c2	+ b1 + b2 [ 55 m
		Farthest piping length from the first joint	c2 + b2 or c1 + a1 [ 50 m
		Farthest piping length after branch box	a11 [ 25 m
		Farthest branch box from outdoor unit	d1	+ c2	+ b2 [ 55 m
		Total piping length between branch boxes and indoor units	a4	+ a5 + a6 + a7 + a8 + a9 + a10 + a11 [ 95 m
	Permissible	In indoor/outdoor section (H) *1	H [ 50 m (In case of outdoor unit is set higher than indoor unit)
	height difference
			H [ 30 m (In case of outdoor unit is set lower than indoor unit)
	(One-way)
		In branch box/indoor unit section (h1+h2)	h1	+ h2 [ 15 m
		In each branch unit (h1)	h2	[ 15 m
		In each indoor unit (h3)	h3	[ 12 m
	Number of bends		|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.

10

4. Installing the refrigerant piping

4.1.3-3 Selecting pipe size System pipe size

AA Outdoor Unit

B First joint (CMY, MSDD) C Branch header (CMY)

A

D Branch box (PAC-MK·BC(B))

E City Multi Indoor unit

E

F M/S/P series Indoor unit

C

B

L2

C

D

L1

L3

D

b

c

d

e

f g

h

i j

a

E

E

E

E

F

F

F

F

E

F

Branch box pipe size

Branch box

(1)Valve size for outdoor unit

Port A

For liquid

ø9.52 mm

Port B

For gas

ø15.88 mm

(2)Valve size for branch box

Port C

Port D

A UNIT

Liquid pipe

ø6.35 mm

Port E

Gas pipe

ø9.52 mm

B UNIT

Liquid pipe

ø6.35 mm

Gas pipe

ø9.52 mm

C UNIT

Liquid pipe

ø6.35 mm

Gas pipe

ø9.52 mm

D UNIT

Liquid pipe

ø6.35 mm

Gas pipe

ø9.52 mm

E UNIT

Liquid pipe

ø6.35 mm

Gas pipe

ø12.7 mm

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

			Conversion formula
			1/4 F	ø6.35
			3/8 F	ø9.52
A		B	1/2 F	ø12.7
			5/8 F	ø15.88
	Fig. 4-6		3/4 F	ø19.05
A (outside)			B (inside)

Fig. 4-7

Pipe size
A, B, C, D, E
A Liquid pipe	B 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 first joint.

a, b, c – j
Indoor unit series	Model number		A Liquid pipe		B Gas pipe
City Multi	15	– 50	L3 [ 30m	ø6.35	ø12.7
			L3 ˃ 30m	ø9.52*1
	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 first 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)

		Connected pipes diameter	Outside	Inside
	Model name		Diameter A	Diameter B
		mm	mm	mm
	PAC-SG78RJB-E	ø9.52 → ø12.7	ø9.52	ø12.7
	PAC-SG79RJB-E	ø12.7 → ø9.52	ø12.7	ø9.52
	PAC-SG80RJB-E	ø12.7 → ø15.88	ø12.7	ø15.88
	PAC-SG77RJB-E	ø6.35 → ø9.52	ø6.35	ø9.52
	PAC-SG76RJB-E	ø9.52 → ø15.88	ø9.52	ø15.88

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
Branch box
Model name	Number of connected units
PAC-MK3 BC(B)	3-branches (Max. 3 units)
PAC-MK5 BC(B)	5-branches (Max. 5 units)

Note: = 0, 1, 2, ....

ThePAC-MK31/32BC(B)andPAC-MK51/52BC(B)cannotbeconnected.

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11

4. Installing the refrigerant piping

	45°± 2°
<![if ! IE]> <![endif]>90°± 0.5° øA	R0
	.
	4
	-
	R0

. 8

A Flare cutting dimensions

B Flare nut tightening torque

Fig. 4-8

		A (Fig. 4-8)
			Copper pipe O.D.	Flare dimensions
	<![if ! IE]> <![endif]>GB
			(mm)	øA dimensions (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
			ø19.05	23.6	- 24.0

B (Fig. 4-8)
Copper pipe O.D.		Flare nut O.D.						Tightening torque
(mm)		(mm)						(N·m)
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
				A
							A Die
							B Copper pipe

Fig. 4-9

4.2. Connecting pipes (Fig. 4-8)

Fig. 4-1, 4-2 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. (InsulationmaterialHeat-resistanttemperature:120°C,Thickness:15mmormore) * 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.)

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

•Theindoorpartsofthedrainpipeshouldbewrappedwithpolyethylenefoaminsulation 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 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 flare seat surface. C

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

		City Multi Indoor unit		Outdoor unit
		15-50	63-140
Gas side	Pipe size (mm)	ø12.7	ø15.88	ø15.88
Liquid side	Pipe size (mm)	ø6.35*1	ø9.52	ø9.52

*1 ‌Ifthefarthestpipinglengthafterthefirstjointexceeds30m,useapipesizeofø9.52.

•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.

* 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.		A (mm)
	(mm)	Flare tool for R410A		Flare tool for R22·R407C
		Clutch type
	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

12

4. Installing the refrigerant piping

D

A Front piping cover B Piping cover

C Stop valve

C

		B
	F	E
A

D Service panel

E Bend radius : 100 mm - 150 mm

F Strap

A

C

D

E

F

G

A Stop valve <Liquid side> B Stop valve <Gas side> C Service port

D Open/Close section

Fig. 4-10

B

C

D

E

F

G

E Local pipe

F Sealed, same way for gas side G Pipe cover

Fig. 4-11

4.3. Refrigerant piping (Fig. 4-10)

RemovetheservicepanelD (threescrews)andthefrontpipingcoverA (twoscrews) and rear piping cover B (five screws).

1Performrefrigerantpipingconnectionsfortheindoor/outdoorunitwhentheoutdoor unit’s stop valve is completely closed.

2 Vacuum-purge air from the indoor unit and the connection piping.

3After connecting the refrigerant pipes, check the connected pipes and the indoor unit for gas leaks. (Refer to 4.4. Refrigerant pipe airtight testing method)

4Vacuumize 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).Thiswillcompletelyconnecttherefrigerantlinesoftheindoorandoutdoor 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		<![if ! IE]> <![endif]>GB
(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 little.
1 Pressurize to 0.5 MPa (5 kgf/cm2G), wait five minutes, and make sure the
	pressure does not decrease.
2 Pressurize to 1.5 MPa (15 kgf/cm2G), wait five minutes, and make sure the
	pressure does not decrease.
3 Pressurize to 4.15 MPa (41.5 kgf/cm2G) and measure the surrounding tem-
	perature and refrigerant pressure.
(3)Ifthespecifiedpressureholdsforaboutonedayanddoesnotdecrease,thepipes
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/cm2G). Make the necessary corrections.
(4)Ifthepressuredecreasesinsteps(2)or(3),thereisagasleak.Lookforthesource
of the gas leak.

13

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4. Installing the refrigerant piping

(1) B F

A

G

H I

E

D

A Valve

B Unit side

C Cap

D Local pipe side

E Pipe cover

F Service port

G Wrench hole

(2) B F

C AC

G

H I

E

D

H Double spanner section

(Donotapplyaspannerotherthantothissection.Doing so would cause coolant leaks.)

ISeal 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 infiltrate the heat insulation material.)

Fig. 4-12

B

C

Fig. 4-13

*The figure to the left is an example only.Thestopvalveshape,serviceport

Aposition,etc.,mayvaryaccordingtothe model.

* Turn section A only.

(Do not further tighten sections A and

B together.)

D

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.)

<Additional Charge>

Calculation of refrigerant charge

Pipe size			Pipe size			Total capacity of	Amount for the
Liquid pipe		+	Liquid pipe		+	connected indoor units	indoor units
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
						16.1 ~ 20.4 kW	3.0 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"]/ø15.88 [5/8"] : 30 m							For these
1: P100 (11.2 kW)			a : ø9.52 [3/8"]/ø15.88 [5/8"] : 15 m				piping
2: P40 (4.5 kW)			b : ø6.35 [1/4"]/ø12.7 [1/2"] : 10 m				lengths

The total length of each pipe size is as follows: ø9.52 [3/8"]/ø15.88 [5/8"] : A = 30 m

ø9.52 [3/8"]/ø15.88 [5/8"] : a = 15 m ø6.35 [1/4"]/ø12.7 [1/2"] : b = 10 m

The total capacity of connected indoor unit is as follows: 11.2 + 4.5 = 15.7

Therefore, the additional charge is as follows:

= 10 ×	19.0	+ (30 + 15) ×	50.0	+ 2.5
	1000		1000

=5.0 kg

14

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

1Followordinanceofyourgovernmentalorganizationfortechnicalstandardrelated to electrical equipment, wiring regulations and guidance of each electric power

company.

2Wiring 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.

4Give 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.

6Use 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.

7Only 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.

<PUMY-SP·VKM>

					E
L N	B1 B2	M1 M2 S M1		M2 S	F
TB1	B C		TB3	TB7
A			D
<PUMY-SP·YKM>					E
L1 L2 L3 N	B1 B2		M1 M2 S	M1 M2 S	F
TB1	TB1B		TB3	TB7
A	B	C	D
A Power source			E Ground for the terminal block (TB3)
B Power supply for branch box			F Screw on the electrical component box
C Screw on the electrical component box
D Transmission line

Fig. 6-1

8In 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)

Whenconductinggroupoperationindifferentrefrigerantsystemswithoutconnectingtotheupperclasscontroller,replacetheinsertionoftheshortcircuitconnector

from CN41 of one outdoor unit to CN40.

9 Group is set by operating the remote controller.

0WhenconnectingtheCONNECTIONKIT(PAC-LV11M-J)andanM-seriesindoor unit, refer to the installation manual for the CONNECTION KIT.

1Whenconnectingabranchbox,besuretoturnontheindoorunitsandthebranch box before turning on the outdoor unit.

2 Use the strap on the unit to sufficiently fasten the cables connected to the termi-	<![if ! IE]> <![endif]>GB
nal blocks. In addition, make sure that the fastened cables and the strap do not
interfere with the panels.

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 connectthewiringbetweenoutdoorunitsorthewiringwiththecentralizedcontrol 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 – 240 VAC. max 6 A).

Caution:

Neverconnectthetransmissionlinefortheindoorunitorthecentralizedcontrol system transmission line to this terminal block (TB1B). If the transmission lines are connected, the indoor unit or centralized control could be damaged.

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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 mm2

•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 mm2 (0.75 to 1.25 mm2)*
Remarks		When10misexceeded,usecablewiththesame
		specifications astransmissionlinewiringcables.
* 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 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		–
		PUMY-SP112	1 to 9 units per 1 OC *1
	M-IC	PUMY-SP125	1 to 10 units per 1 OC *1
Indoor unit controller		PUMY-SP140	1 to 12 units per 1 OC *1
		PUMY-SP112
	A-IC	PUMY-SP125	2 to 8 units per 1 OC *1
		PUMY-SP140
Branch box	–	–	0 to 2 units per 1 OC
			Maximum of 12 control-
		M-NET RC *2, *3	lers for 1 OC (Can not be
Remote controller	RC		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.)

<Examples of Transmission Cable Wiring>

■ 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.

f.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. 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	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)
	Outdoor unit	51 to 100		Use the most recent address of all the indoor units plus 50
				* The address automatically becomes “100” if it is set as “01 - 50”.
	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.

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>

1 M-NET Remote controller

•Max length via outdoor units: L1+L2+L3+L4 and L1+L2+L3+L5 and L1+L2+L6+L7 [ 500 m (1.25 mm² or more)

•Max transmission cable length: L1 and L3+L4 and L3+L5 and L2+L6 and L7 [ 200 m (1.25 mm² or more)

•Remote controller cable length:r1, r2, r2+r3, r4 [ 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 (L8) should be included in the calculation of the maximum length and overall length.

2 MA Remote controller

•Max length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7 [ 500 m (1.25 mm² or more)

•Max transmission cable length (M-NET cable): L1 and L3+L4 and L2+L6 and L7 [ 200 m (1.25 mm² or more)

•Remote controller cable length: c1 and c1+c2+c3 and c1+c2+c3+c4 [ 200 m (0.3 to 1.25 mm²)

16