Toshiba MMU-AP0091H, MMC-AP0151H, MMD-AP0961H, MMU-AP0121H, MMU-AP0151H DESIGN MANUAL

FILE NO. A04-017

DESIGN MANUAL

R410A

Heat Recovery Type

Indoor Unit

<4-way Air Discharge Cassette Type>

MMU-AP0091H, AP0121H, AP0151H, MMU-AP0181H, AP0241H, AP0271H, MMU-AP0301H, AP0361H, AP0481H MMU-AP0561H

<2-way Air Discharge Cassette Type>

MMU-AP0071WH, AP0091WH, AP0121WH, MMU-AP0151WH, AP0181WH, AP0241WH, MMU-AP0271WH, AP0301WH, AP0481WH*

* CHINA market only

<1-way Air Discharge Cassette Type>

MMU-AP0071YH, AP0091YH, AP0121YH, MMU-AP0151SH, AP0181SH, AP0241SH

<Concealed Duct Standard Type>

MMD-AP0071BH, AP0091BH, AP0121BH, MMD-AP0151BH, AP0181BH, AP0241BH, MMD-AP0271BH, AP0301BH, AP0361BH, MMD-AP0481BH, AP0561BH

<Concealed Duct High Static Pressure Type>

MMD-AP0181H, AP0241H, AP0271H, MMD-AP0361H, AP0481H, AP0721H, MMD-AP0961H

<Under Ceiling Type>

MMC-AP0151H, AP0181H, AP0241H, MMC-AP0271H, AP0361H, AP0481H

<High Wall Type>

MMK-AP0071H, AP0091H, AP0121H, MMK-AP0151H, AP0181H, AP0241H, MMK-AP0072H*, AP0092H*, AP0122H*

* European market only

<Floor Standing Cabinet Type>

MML-AP0071H, AP0091H, AP0121H, MML-AP0151H, AP0181H, AP0241H

<Floor Standing Concealed Type>

MML-AP0071BH, AP0091BH, AP0121BH, MML-AP0151BH, AP0181BH, AP0241BH

<Floor Standing Type>

(2 Series)

Outdoor Unit

<Inverter Unit>

MMY-MAP0802FT8 MMY-MAP1002FT8 MMY-MAP1202FT8

FS unit

RBM-Y1122FE

RBM-Y1802FE

RBM-Y2802FE

MMF-AP0151H, AP0181H, AP0241H MMF-AP0271H, AP0361H, AP0481H MMF-AP0561H

PRINTED IN JAPAN, 2005

CONTENTS

DESIGN MANUAL ..................................................................

3

1.OUTLINE OF TOSHIBA SUPER HRM

	(Super Heat Recovery Multi System) .................................................	3
2.	SUMMARY OF SYSTEM EQUIPMENTS ..............................................	6
3.	BASIC SYSTEM CONFIGURATION ...................................................	11
4.	EQUIPMENT SELECTION PROCEDURE ..........................................	16
5.	REFRIGERANT PIPING DESIGN .......................................................	25
6.	WIRING DESIGN .................................................................................	30
7.	CONTROLS .........................................................................................	35
8.	ACCESSORIES ...................................................................................	41
9.	TECHNICAL SPECIFICATIONS..........................................................	44
10.	FAN CHARACTERISTICS ..................................................................	59
11.	DIMENSIONAL DRAWINGS ...............................................................	62

DESIGN MANUAL

1.OUTLINE OF TOSHIBA SUPER HRM (Super Heat Recovery Multi System)

Shortest route design by free branching

Combination of line and header branching is highly flexible.

This follows for the shortest design route possible, thereby saving on installation time and cost. Line/header branching after header branching is only available with TOSHIBA Super HRM.

Line branching

Outdoor unit

Branching joint

8F

FS unit

Indoor unit

Header branching

Outdoor unit

Branching

7F

header

FS unit

Indoor unit

Line + Header branching

Outdoor unit		Header	2F
			FS
			unit
Branching joint	Indoor
	unit
Line branching after header branching			1F
Outdoor unit
	Header	Branching joint
Super HRM
MMS Only

Only	FS unit
Indoor unit

Header branching after header branching

Outdoor unit

Header

Super HRM

Only

Header

FS unit

Indoor unit

3

8F

7F

2F

1F

• Non-polarized control wiring between outdoor and indoor units

Outdoor unit	U1 U2
Indoor unit	U1 U2	U1 U2	U1 U2

Sub heat exchanger

main heat exchanger	Outdoor unit

	FS unit
	Indoor
	unit				Compressor
	Heating	Cooling	Cooling	Cooling

• Simultaneous operation

Allowable pipe length :

150m equivalent length

Outdoor unit

differenceHeightbetween indoor outdoorandunitunit : 50m	differenceHeightbetween indoor unitindoorandunit: 35m
	1st branching
	section

From 1st branching to the farthest indoor unit : 50m

4

Energy saving

No. 1 COP in heat recovery VRF industry. Compared with the conventional chiller fan coil system, a large energy saving can be realized.

Advanced bus communication system

Wiring between indoor and outdoor unit is a simple 2 wire system.

Communication address is also automatically configured.

A default test mode operation is available.

Self diagnostics system

Comprehensive troubleshooting code allows for timely identification of problems arising.

High lift and flexible piping design

Equivalent pipe length of 150m and vertical lift of 50m is made possible with TOSHIBA Super HRM. Vertical lift between indoor units of 35m is the highest in the industry.

Also, maximum piping length from 1st branching is 50m. These allow for greater flexibility in the location of the system.

Simultaneous operation

By controling the FS unit, Super HRM enables freely simultaneous operation of cooling and heating. This operation meets the various needs of modern buildings that has highly airtight or an increasing heat load due to use of computers. Also, Super HRM improves energy efficiency by recycling exhaust heat.

Extended outdoor temperature operating range

By employing sophisticated system control with all inverter driven compressor, the operating range in cooling has been extended from -5ºC to -10ºC.

Compact FS unit design

The compact and light weight design of the FS unit (Flow selector unit) allows it to be easily installed in limited spaces.

Group control by one FS unit

Up to 8 indoor units of group control by one FS unit gives the design flexibility for various type and size of rooms.

Intelligent control

TOSHIBA Super HRM intelligent controls and modulating valves deliver the required capacity, according to the load variation from 50% to 100%.

The intelligent controls and modulating valves limit or increase the cooling capacity dynamically so humidity and temperature are kept in the comfort zone.

Conforms to building control law

IAQ (Indoor Air Quality) is also achieved by combining various accessories required by the Building Control Law.

Wide control applications

Artificial Intelligence Network system

•Central control and monitoring system available

•Weekly schedule operation through weekly timer

Integration with Building Management System (BMS) is available.

5

2. SUMMARY OF SYSTEM EQUIPMENTS

Equipments

1. Outdoor units

Inverter unit

Corresponding HP				Appearance
		8HP	10HP	12HP
Model name	MMY-	MAP0802FT8	MAP1002FT8	MAP1202FT8
Cooling capacity (kW)		22.4	28.0	33.5
Heating capacity (kW)		25.0	31.5	35.5

2. Outdoor units (Combination of outdoor units)

Corresponding HP		8HP	10HP	12HP	16HP	18HP
Combined model	MMY-	MAP0802FT8	MAP1002FT8	MAP1202FT8	AP1602FT8	AP1802FT8
Cooling capacity (kW)		22.4	28	33.5	45	50.4
Heating capacity (kW)		25	31.5	35.5	50	56.5
		8HP	10HP	12HP	8HP	10HP
Combined outdoor units					8HP	8HP
No. of connectable indoor units		13	16	16	27	30

Corresponding HP		20HP	24HP	26HP	28HP	30HP
Combined model	MMY-	AP2002FT8	AP2402FT8	AP2602FT8	AP2802FT8	AP3002FT8
Cooling capacity (kW)		56	68	73	78.5	84
Heating capacity (kW)		63	76.5	81.5	88	95
		10HP	8HP	10HP	10HP	10HP
Combined outdoor units		10HP	8HP	8HP	10HP	10HP
			8HP	8HP	8HP	10HP
No. of connectable indoor units		33	40	43	47	48

3. FS units (Flow selector units)

Model name	Usage		Appearance
RBM-Y1122FE	Total capacity for indoor unit :	Below 11.2 kw
RBM-Y1802FE	Total capacity for indoor unit :	11.2 to below 18.0 kw
RBM-Y2802FE	Total capacity for indoor unit :	18.0 to 28.0 kw or less

* Accessory part (Sold separately): Connection cable kit (RBC-CBK15FE), up to 15m.

4. Branching joints and headers

	Model name			Usage					Appearance
	RBM-BY53FE	Indoor unit capacity code (*1) : Total below 6.4
	RBM-BY103FE	Indoor unit capacity code (*1) : Total 6.4 or more and below 14.2						For 3
Y-shape	RBM-BY203FE	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2						piping
	RBM-BY303FE	Indoor unit capacity code (*1) : Total 25.2 or more
branching
	RBM-BY53E	Indoor unit capacity code (*1) : Total below 6.4
joint (*3)
	RBM-BY103E	Indoor unit capacity code (*1) : Total 6.4 or more and below 14.2						For 2
	RBM-BY203E	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2					piping (*6)
	RBM-BY303E	Indoor unit capacity code (*1) : Total 25.2 or more
4-branching	RBM-HY1043FE	Indoor unit capacity code (*1) : Total below 14.2						For 3
	RBM-HY2043FE	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2						piping
header (*4) (*5)	RBM-HY1043E	Indoor unit capacity code (*1) : Total below 14.2						For 2
	RBM-HY2043E	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2					piping (*6)
8-branching	RBM-HY1083FE	Indoor unit capacity code (*1) : Total below 14.2						For 3
	RBM-HY2083FE	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2						piping
header (*4) (*5)	RBM-HY1083E	Indoor unit capacity code (*1) : Total below 14.2						For 2
	RBM-HY2083E	Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2					piping (*6)
		1 set 4 types T-shape joint pipes as described below:
T-shape		The required quantity is arranged and they are combined on site.
branching			Connection piping	Corresponded dia. (mm)	Q'ty
joint (For
	RBM-BT13FE		Balance pipe	Ø 9.5	1
connection
			Piping at liquid side	Ø12.7 to Ø22.2	1
of outdoor
			Piping at discharge gas side	Ø19.1 to Ø28.6	1
units)
			Piping at suction gas side	Ø22.2 to Ø38.1	1

*1 “Capacity code” can be obtained from page 8. (Capacity code is not actual capacity)

*2 If total capacity code value of indoor unit exceeds that of outdoor unit, apply capacity code of outdoor unit. *3 When using Y-shape branching joint for 1st branching, select according to capacity code of outdoor unit. *4 Max. 6.0 capacity code in total can be connected.

*5 If capacity code of outdoor unit is 26 or more, it is not used for 1st branching. *6 This is used for branching to “cooling only” indoor unit.

*7 Model names for outdoor and indoor units described in this guide are shortened because of the space constraint.

6

50Hz

Super Heat Recovery Multi System Outdoor Unit

	HP (Capacity	Model name	No. of	Inverter	Used	Inverter	Used	Inverter	Used
			combined	8 HP		10 HP		12 HP
	code)	MMY-			Q'ty		Q'ty		Q'ty
			units	MMY-		MMY-		MMY-
	8HP ( 8)	MAP0802HT8	1	MAP0802FT8	1
	10HP (10)	MAP1002HT8	1			MAP1002FT8	1
	12HP (12)	MAP1202HT8	1					MAP1202FT8*	1
	16HP (16)		2	MAP0802FT8	2
	18HP (18)		2	MAP0802FT8	1	MAP1002FT8	1
	20HP (20)		2			MAP1002FT8	2
	24HP (24)			MAP0802FT8	3
	26HP (26)			MAP0802FT8	2	MAP1002FT8	1
	28HP (28)			MAP0802FT8	1	MAP1002FT8	2
	30HP (30)					MAP1002FT8	3

*12HP unit is for stand-alone usage only.

Outdoor unit combination with 12HP unit is not available.

1.Allocation standard of model name

MMY– M AP

F T 8

Power supply specifications, 3Ø 380–415 V, 50Hz .......	8
T : Capacity variable unit

F : Heat recovery

Development series No.

Capacity rank HP x 10

New refrigerant R410A

M : Single module unit, No mark : Combined Model name

Modular Multi

2. Rated conditions (Rated mode : Condition)

Cooling : Indoor air temperature 27°C DB/19°C WB, Outdoor air temperature 35°C DB Heating : Indoor air temperature 20°C DB, Outdoor air temperature 7°C DB/6°C WB

3. Compatibility with 1 Series

Oudoor unit	MMY-
1 Series	2 Series*
-MAP**1FT8	-MAP**2FT8
1 Series	NG
OK
RBM-Y***1E

FS unit

2 Series

OK

OK

RBM-Y***2E

* 2 series outdoor units cannot be used with 1 series outdoor units.

7

4. Indoor unit

*1) China only

*2) European market only

Type	Appearance	Model name	Capacity rank	Capacity code	Cooling	Heating
					capacity (kW)	capacity (kW)
		MMU-AP0091H	009 type	1	2.8	3.2
		MMU-AP0121H	012 type	1.25	3.6	4.0
		MMU-AP0151H	015 type	1.7	4.5
						5.0
4-way Air Discharge		MMU-AP0181H	018 type	2	5.6	6.3
		MMU-AP0241H	024 type	2.5	7.1	8.0
Cassette Type		MMU-AP0271H	027 type	3	8.0	9.0
		MMU-AP0301H	030 type	3.2	9.0	10.0
		MMU-AP0361H	036 type	4	11.2	12.5
		MMU-AP0481H	048 type	5	14.0	16.0
		MMU-AP0561H	056 type	6	16.0	18.0
		MMU-AP0071WH	007 type	0.8	2.2	2.5
		MMU-AP0091WH	009 type	1	2.8	3.2
		MMU-AP0121WH	012 type	1.25	3.6	4.0
2-way Air Discharge		MMU-AP0151WH	015 type	1.7	4.5	5.0
		MMU-AP0181WH	018 type	2	5.6	6.3
Cassette Type
		MMU-AP0241WH	024 type	2.5	7.1	8.0
		MMU-AP0271WH	027 type	3	8.0
						9.0
		MMU-AP0301WH	030 type	3.2	9.0	10.0
		MMU-AP0481WH*1)	048 type	5	14.0	16.0
		MMU-AP0071YH	007 type	0.8	2.2	2.5
1-way Air Discharge		MMU-AP0091YH	009 type	1	2.8	3.2
		MMU-AP0121YH	012 type	1.25	3.6	4.0
Cassette Type		MMU-AP0151SH	015 type	1.7	4.5	5.0
		MMU-AP0181SH	018 type	2	5.6	6.3
		MMU-AP0241SH	024 type	2.5	7.1	8.0
		MMD-AP0071BH	007 type	0.8	2.2	2.5
		MMD-AP0091BH	009 type	1	2.8	3.2
		MMD-AP0121BH	012 type	1.25	3.6
						4.0
		MMD-AP0151BH	015 type	1.7	4.5
						5.0
Concealed Duct		MMD-AP0181BH	018 type	2	5.6	6.3
		MMD-AP0241BH	024 type	2.5	7.1	8.0
Standard Type
		MMD-AP0271BH	027 type	3	8.0	9.0
		MMD-AP0301BH	030 type	3.2	9.0	10.0
		MMD-AP0361BH	036 type	4	11.2	12.5
		MMD-AP0481BH	048 type	5	14.0
						16.0
		MMD-AP0561BH	056 type	6	16.0
						18.0
		MMD-AP0181H	018 type	2	5.6	6.3
		MMD-AP0241H	024 type	2.5	7.1	8.0
Concealed Duct		MMD-AP0271H	027 type	3	8.0	9.0
High Static		MMD-AP0361H	036 type	4	11.2	12.5
Pressure Type		MMD-AP0481H	048 type	5	14.0	16.0
		MMD-AP0721H	072 type	8	22.4
						25.0
		MMD-AP0961H	096 type	10	28.0
						31.5
		MMC-AP0151H	015 type	1.7	4.5	5.0
		MMC-AP0181H	018 type	2	5.6	6.3
Under Ceiling Type		MMC-AP0241H	024 type	2.5	7.1	8.0
		MMC-AP0271H	027 type	3	8.0	9.0
		MMC-AP0361H	036 type	4	11.2	12.5
		MMC-AP0481H	048 type	5	14.0	16.0
		MMK-AP0071H	007 type	0.8	2.2
						2.5
High Wall Type		MMK-AP0091H	009 type	1	2.8	3.2
		MMK-AP0121H	012 type	1.25	3.6	4.0
(1 Series)		MMK-AP0151H	015 type	1.7	4.5	5.0
		MMK-AP0181H	018 type	2	5.6	6.3
		MMK-AP0241H	024 type	2.5	7.1	8.0
High Wall Type		MMK-AP0072H	007 type	0.8	2.2	2.5
		MMK-AP0092H	009 type	1.0	2.8	3.2
(2 Series) *2)
		MMK-AP0122H	012 type	1.25	3.6	4.0
		MML-AP0071H	007 type	0.8	2.2
						2.5
Floor Standing		MML-AP0091H	009 type	1	2.8	3.2
		MML-AP0121H	012 type	1.25	3.6	4.0
Cabinet Type		MML-AP0151H	015 type	1.7	4.5
						5.0
		MML-AP0181H	018 type	2	5.6
						6.3
		MML-AP0241H	024 type	2.5	7.1	8.0
		MML-AP0071BH	007 type	0.8	2.2	2.5
		MML-AP0091BH	009 type	1	2.8
Floor Standing						3.2
		MML-AP0121BH	012 type	1.25	3.6	4.0
Concealed Type		MML-AP0151BH	015 type	1.7	4.5	5.0
		MML-AP0181BH	018 type	2	5.6	6.3
		MML-AP0241BH	024 type	2.5	7.1	8.0
		MMF-AP0151H	015 type	1.7	4.5	5.0
		MMF-AP0181H	018 type	2	5.6	6.3
Floor Standing Type		MMF-AP0241H	024 type	2.5	7.1	8.0
		MMF-AP0271H	027 type	3	8.0	9.0
		MMF-AP0361H	036 type	4	11.2	12.5
		MMF-AP0481H	048 type	5	14.0
						16.0
		MMF-AP0561H	056 type	6	16.0	18.0

8

5. Remote controller

Model Name name

Wired remote controller

RBC-AMT21E

Simple remote controller	RBC-AS21E
Wireless remote controller kit	TCB-AX21U (W)-E
	RBC-AX22CE
	AX21E
	TCB-

Appearance		Application		Function
		Connected to indoor unit	•	Start / Stop
			•	Changing mode
			•	Temperature setting
			•	Air flow changing
			•	Timer function
				Either “ON” time or “OFF” time or “CY-
				CLIC” can be set how many 30 min. later
	CODE No.			ON or OFF is operated.
				Combined with the weekly timer, weekly
SET DATA	UNIT No.
SETTINGTEST	R.C. No.			schedule operation can be operated.
			•	Filter sign
				Displays automatically maintenance time of
				indoor filter.
	UNIT	Wired remote Wired remote controller		Filter sign flashes.
			•	Self-diagnosis function
SET CL		controller (In case of control by
		2 remote controllers)		Pressing “CHECK” button displays cause of
				trouble on the check code.
			•	Control by 2 remote controllers is available.
				Two remote controllers can be connected to
				one indoor unit. The indoor unit can be
				separately operated from the isolated places.
		Connected to indoor unit	•	Start / Stop
			•	Temperature setting
			•	Air flow changing
			•	Check code display
TEST	˚C
SETTING	˚F

Simple remote controller

• Start / Stop

• Changing mode

• Temperature setting

• Air flow changing

• Timer function

Either “ON” time or “OFF” time or “CYCLIC” Connected to indoor unit can be set how many 30 min. later ON or OFF

is operated.

• Control by 2 remote controllers is available.

Two wireless remote controllers can operate one indoor unit. The indoor unit can be separately operated from the isolated places.

• Check code display

TCB-AX21U (W)-E

(For 4-way air discharge cassette)

RBC-AX22CE

(For under ceiling)

TCB-AX21E

(For others except concealed duct high static pressure)

9

Model Name name

Weekly timer

RBC-EXW21E

Central remote controller

TCB-SC642TLE

	Appearance		Application				Performance
					•	Weekly schedule operation
			Connected to central				Setting different start / stop time for
			remote controller,
							each day of the week
			wired remote controller
							ON / OFF can be easily set 3 times
							a day.
						ON	OFF ON		OFF ON		OFF
						8:00	12:00	13:00	18:00	19:00	21:00
			Wired		Weekly		“CHECK” “PROGRAM” “DAY”
							button make setting copy easy.
			remote controller		timer
		SuMoTuWeTh Fr Sa
							Two patterns of schedule for a
PROGRAM1
PROGRAM2		ERROR					week can be specified.
PROGRAM3
							(Summer schedule and winter
WEEKLY TIMER							schedule, etc.)
				Outdoor unit			“CANCEL” “DAY” button make
							holiday setting easy.
							If power supply fails, the setting
							contents are stored in memory, for
							100 hours.
			Central		Weekly
			remote controller		timer
					•	Individual control up to 64 indoor units.
			Connected to outdoor unit,
			indoor unit		•	Individual control for max. 64 indoor
						units divided 1 to 4 zone.
			Outdoor			Up to 16 indoor units for each
			unit			zone
					•	Up to 16 outdoor header units are
						connectable.
					•	4 type central control setting to inhibit
						individual operation by remote
ALL ZONE						controller can be selected.
ZONE
GROUP		No.			•	Setting for one of 1 to 4 zone is
		CODE
1234	UNIT No.	TEST				available.
SET DATA
SETTING R.C.	No.
					•	Usable with other central control
						devices (Up to 10 central control
		GROUP				devices in one control circuit)
SELECT	ZONE		Central
					•	Two control mode selectivity
			remote controller
	CL SET					Central controller mode
						Remote controller mode
					•	Setting of simultaneous ON/OFF 3
						times for each day of the week
						combined with weekly timer.
			Central
			remote
			controller	Indoor
			remote controller

10

3. BASIC SYSTEM CONFIGURATION

	8HP system			Capacity code
	• Max. indoor unit : 13 units
				Total 10.4
	• Capacity code of indoor unit :		Min. : 5.6
				No. of total units
			Max. : 10.8
				13

Outdoor unit

8HP

Capacity code over the branch (0.8 + 0.8 = 1.6)

Indoor unit designation

10.4	4.8		4.0		3.2		2.4		1.6

007

007

007

007

007

(0.8)		(0.8)		(0.8)		(0.8)		(0.8)

Capacity

code

007

(0.8)

	5.6	4.8	4.0
FS unit
Indoor unit	007	007	007

Remote	(0.8)		(0.8)		(0.8)
controller

3.22.4

007

007

(0.8) (0.8)

1.60.8

007

007

(0.8) (0.8)

11

	10 HP system			Capacity code
	• Max. indoor unit : 16 units			Total 12.8
	• Capacity code of indoor unit :		Min. : 7
			Max. : 13.5	No. of total units
				16

Outdoor unit

10HP

12.8	6.4		5.6		4.8		4.0		3.2		2.4		1.6

007	007
(0.8)	(0.8)

007	007
(0.8)	(0.8)

007	007
(0.8)	(0.8)

007	007
(0.8)	(0.8)

	6.4	5.6	4.8
FS unit
Indoor unit	007	007	007

Remote	(0.8)		(0.8)		(0.8)
controller

4.0 3.2 2.4

007

007

007

(0.8) (0.8) (0.8)

1.6
007	007
(0.8)	(0.8)

12

	12 HP system			Capacity code
	• Max. indoor unit : 16 units			Total 14.0
	• Capacity code of indoor unit :		Min. : 8.4
			Max. : 14.4	No. of total units
				16

Outdoor unit

12HP

14.0	6.4		5.6		4.8		4.0		3.2		2.4		1.6

007

007

(0.8) (0.8)

007

007

(0.8) (0.8)

007

007

(0.8) (0.8)

007	007
(0.8)	(0.8)

7.6		6.8		6.0		5.0

FS unit
Indoor unit	007	007	009	009

Remote	(0.8)		(0.8)		(1.0)		(1.0)
controller

4.0	3.0	2.0
009	009	009	009
(1.0)	(1.0)	(1.0)	(1.0)

13

20 HP system

•Max. indoor unit : 33 units

•Capacity code of indoor unit : Min. : 14

Max. : 27

Outdoor unit

10HP 10HP

10

Capacity code

Total 26.75

No. of total units

19

26.75	10.25		8.25		6.25		5.0		3.75		2.5

018	018
(2.0)	(2.0)

012	012	012	012	012
(1.25)	(1.25)	(1.25)	(1.25)	(1.25)

16.5

8.25

6.25

5.0

3.75

2.5

018	012
(2.0)	(1.25)

012	012
(1.25)	(1.25)

012	012
(1.25)	(1.25)

8.25 6.25 5.0 3.75 2.5 FS unit

Indoor unit	018
Remote	(2.0)
controller

012	012
(1.25)	(1.25)

012	012	012
(1.25)	(1.25)	(1.25)

14

	30 HP system			Capacity code
	• Max. indoor unit : 48 units			Total 40
	• Capacity code of indoor unit :		Min. : 21
				No. of total units
			Max. : 40.5
				28

Outdoor unit

10HP 10HP 10HP

20 10

40

10

9.2

8.4

7.6

6.8

6

007

007

007

(0.8) (0.8) (0.8)

007

007

(0.8) (0.8)

018	036
(2)	(4)

30

10

9.2

8.4

7.6

6.8

6

007

007

007

(0.8) (0.8) (0.8)

007

007

(0.8) (0.8)

018	036
(2)	(4)

20

10

9.2

8.4

7.6

6.8

6

007

007

007

(0.8) (0.8) (0.8)

007

007

(0.8) (0.8)

018	036
(2)	(4)

	10	9.2
FS unit
Indoor unit	007	007

Remote (0.8) (0.8) controller

8.4 7.6 6.8

007

007

007

(0.8) (0.8) (0.8)

6
018	036
(2)	(4)

15

4. EQUIPMENT SELECTION PROCEDURE

1.Selection flow chart

1.Determination of indoor air conditioning load

2. Preliminary selection of indoor units

3.Preliminary selection of outdoor unit with indoor units

4.Capacity correction for piping length/height between indoor and outdoor units

5.Capacity correction based on indoor and outdoor temperature

NO

6.Validate preliminary selection of indoor units

7.Confirmation of selection for indoor unit and outdoor units

End

2. Combination conditions for indoor unit and outdoor unit

1. For indoor unit, the capacity code is decided for each capacity rank.

Capacity rank type	007	009	012	015	018	024	027	030	036	048	056	072	096
Capacity code	0.8	1	1.25	1.7	2	2.5	3	3.2	4	5	6	8	10

NOTE :

Capacity rank : Correspondence to Btu/h. Capacity code : Correspondence to Horsepower.

2. For outdoor unit, maximum No. of connectable indoor units and total capacity code of indoor units are decided.

Outdoor unit	Capacity code of	Max. No. of	Total capacity code
(Heat recovery)	outdoor unit	indoor units	of indoor units
MMY-MAP0802FT8	8	13	5.6	to	10.8
MMY-MAP1002FT8	10	16	7.0	to	13.5
MMY-MAP1202FT8	12	16	8.4	to	14.4
MMY-AP1602FT8	16	27	11.2	to	21.6
MMY-AP1802FT8	18	30	12.6	to	24.3
MMY-AP2002FT8	20	33	14.0	to	27.0
MMY-AP2402FT8	24	40	16.8	to	32.4
MMY-AP2602FT8	26	43	18.2	to	35.1
MMY-AP2802FT8	28	47	19.6	to	37.8
MMY-AP3002FT8	30	48	21.0	to	40.5

70 to 135% of outdoor unit capacity for all systems except 12HP 70 to 120% of outdoor unit capacity for 12HP

16

3. Cooling/heating capacity characteristics

1. Cooling capacity calculation method :

Required cooling capacity = Cooling capacity x Factor ( , , , , *1) kW

Indoor air wet bulb temperature vs. capacity correction value

Capacity correction value

1.2

1.1

1.0

0.9

0.8

15

20

24

Indoor air wet bulb temp. (˚C)

Outdoor air dry bulb temperature vs.capacity correction value

Capacity correction value

1.2

1.1

1.0

0.9

–5

0

5

10

15

20

25

30

35

40 43

Outdoor air dry bulb temp. (˚C)

Air flow variation ratio of indoor unit vs. capacity correction (For concealed duct type only)

Capacity correction value

1.1

1.0

0.9

80

90

100

110

120

Air flow variation ratio (%)

*1 : Coefficient to use for correction of outdoor unit capacity when total capacity of the indoor units are not equal to the outdoor unit capacity.

17

Connecting pipe length and lift difference between indoor and outdoor units vs. capacity correction value

Height of outdoor unit H (m)

50 Outdoor unit (8 to 30HP)

40

30
	%100
20
10

0	98	96	94	92	90	88	86	84	82	80	78	76

–10

–20

–30 0

10

20

30

40

50

60

70

80

90 100 110 120 130 140 150

Pipe length (Equivalent length) L (m)

Outdoor unit

L’ is the longest one of

(l’o + l’a, l’o + l’b, l’o + l’c)

ho l’o

H = ho +

(Largest one of ha, hb, and hc)

					ha
	hc		hb			l’a A
						l’b	B Indoor unit
						l’c
							C

Correction of outdoor unit diversity

Correction (%)

120

100

80

60

40

20

0

20

40

60

80

100

120

135

Standard capacity ratio

Indoor units total capacity ratio (%)

*1 : Coefficient to use for correction of outdoor unit capacity when total capacity of the indoor units are not equal to the outdoor unit capacity.

18

2. Heating capacity calculation method :

Required heating capacity = Heating capacity x Factor ( , , , , *1, *2) kW

Indoor air dry bulb temperature vs. capacity correction value

Capacity correction value

1.2

1.1

1.0

0.9

0.8

15 20 24

Indoor air dry bulb temp. (˚C)

Outdoor air wet bulb temperature vs. capacity correction value

Capacity correction value

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5 –15 –10 –5 0 5 10 15

Outdoor air wet bulb temp. (˚C)

Air flow variation ratio of indoor unit vs. capacity correction (For concealed duct type only)

Capacity correction value

1.1

1.0

0.9	90	100	110	120
80

Air flow variation ratio (%)

*1 : Coefficient to use for correction of outdoor unit capacity when total capacity of the indoor units are not equal to the outdoor unit capacity.

*2 : Refer to item 3 in page 20.

19

Connecting pipe length and lift difference between indoor and outdoor units vs. capacity correction value

Height of outdoor unit H (m)

50 Outdoor unit (8 to 30HP)

40

30
		100%
10
20
0
					99			98			97			96			95				94	93		92	91
–10
–20
–30 0		10					30		40				60			70
				20						50							80			90 100 110 120 130 140 150

Pipe length (Equivalent length) L (m)

Correction of outdoor unit diversity

Outdoor unit

L’ is the longest one of

(l’o + l’a, l’o + l’b, l’o + l’c)

ho l’o

H = ho +

(Largest one of ha, hb, and hc)

							ha
	hc				hb				l’a A
									l’b	B Indoor unit
									l’c
										C

Correction (%)

120

100

80

60

40

20

0

20

40

60

80

100

120

135

Standard capacity ratio

Indoor units total capacity ratio (%)

*1 : Coefficient to use for correction of outdoor unit capacity when total capacity of the indoor units are not equal to the outdoor unit capacity.

3. Capacity correction in case of frost on the outdoor heat exchanger in heating

Correct the heating capacity when frost was found on the outdoor heat exchanger.

Heating capacity = Capacity after correction of outdoor unit × Correction value of capacity resulted from frost (Capacity after correction of outdoor unit : Heating capacity calculated in the above item 2.)

6 Capacity correction in case of frost on the outdoor heat exchanger

Capacity correction value

1.0

0.9

0.8

–15

–10

–5

0

5

10

Outdoor air wet bulb temp. (˚C)

20

4. Capacity calculation for each indoor unit

	Capacity for each indoor unit	Required standard capacity of indoor unit
	= Capacity after correction of outdoor unit ×
		Total value of standard indoor unit capacity

5. Operating temperature range

		In cooling time
	45
(˚C)	40
	35
temp.
	30
dryairbulb	25			Usablerange	pull(indown)
	10		Continuously
	20
			operable
Outdoor	15		range
	5
	0
	–5
	–10	15	20	25	28	30
	10

Indoor air wet bulb temp. (˚C)

In heating time

	20
(˚C)	15
temp.	10
	5
Outdoor air wet bulb			(in warming-up)
	0	Usable range		Continuously
				operable
				range
	–5
	–10
	–15
	–20	10	15	20	25	30
	5

Indoor air dry bulb temp. (˚C)

*The unit can be operated even if outdoor temperature gets down to -20°C, however note that the warranty covers only up to -15°C because operation beyond that temperature is out of specification.

*When outdoor air temperature falls to under -15°C, it may cause shortening the product lifetime.

*When outdoor temperature goes out of specified range “ or ” mark is indicated on the remote controller display and required operation will stop.

“ & ”: When heating operation “”: When cooling operation

[Notice]

•This indication is not failure.

•When outdoor temperature goes back to specified range, “ or ” disappear and start normal operation.

•Operation stops because concurrent operation can not be kept in the condition of out of specification for Super HRM.

(Outdoor temp.(DB)	<-10°C: Cooling,
	>21°C: Heating)

*Do not use “Super HRM” for other than personal usage where the ambient temperature may go down below -10°C. (For example, OA equipment/Electric device/Food/Animals and plants/Art object)

6.Rated conditions

Cooling :

Indoor air temperature 27°C DB/19.0°C WB, Outdoor air temperature 35°C DB

Heating :

Indoor air temperature 20°C DB, Outdoor air temperature 7°C DB/6°C WB

21

4. Example of equipment selection

The following shows an example of equipment selection based upon a building model

Fig. 1 Overview of building model

<Outside view>

<Stories configuration>

2F

1F

14.4m

8m

7.2m

2F				Office rooms
	2 – 1 2 – 2 2 – 3	2 – 4	2 – 5	(2–1, 2–2 : Computer room)

		1 – 1	1 – 4	Stores
	1F
			1 – 3	(1-4 : Kitchen)
		1 – 2
			Non-air conditioning zone

•Steel frame, reinforced concrete building, four stories above ground. Total floor area : 207m²

Outdoor unit is installed on the roof.

•Design indoor conditions

Cooling : 27.0/19.0°C DB/WB, Heating : 20°C DB

•Design outdoor conditions

Cooling : 35°C DB (Standard condition), Heating : 3°C WB (Standard condition : 6°C WB)

Selection Criteria for Each Floor

2F : Outdoor capacity exactly matches the total indoor capacity.

Total indoor HP = Outdoor unit HP Indoor : 2.5 HP x 2 units + 1.25 HP + 2 HP x 2 = 10.25 HP Outdoor : 10 HP Same capacity

Heat load of room 2-1 and 2-2 is higher than other rooms.

1F : Consider the increasing heat load in the specific room.

•Total indoor units HP > Outdoor unit HP

•Select each indoor unit based on individual peak room load. Indoor : 2.5HP + 2.5HP + 3.2HP + 2.0HP =

10.2HP < > Outdoor : 10HP (Same capacity)

•The room “1-4” is designed for “cooling only” because of its high heat load.

•The outdoor module should have sufficient capacity to cover the peak demand of the indoor unit connected.

22

Procedure and result of equipment selection

1.Procedure of equipment selection

a.Calculate cooling for every rooms.

b.Select an indoor unit to match the cooling load for every room from the table in pages 8.

c.Choose a tentative outdoor module that will match with the indoor units. Perform capacity correction based on the pipe length, system lift, indoor set temperature, outdoor temperature.

Then, make sure the corrected system cooling capacity satisfies the cooling load.

2.Equipment selection and capacity check

	Air conditioning load						Equipment selection
		Indoor air conditioning load			Indoor unit				Outdoor unit
Floor	Room No.	(kW)			Model	Capacity (kW)			Model	Capacity (kW)
									MMY-
		Cooling		Heating		Cooling		Heating		Cooling	Heating
	2-1	6.0		3.4	MMU-AP0241H	7.1		8.0
	2-2	5.0		2.2	MMU-AP0181H	5.6		6.3
2F
	2-3	5.0		4.2	MMU-AP0181H	5.6		6.3
	2-4	3.2		2.7	MMU-AP0121H	3.6		4.0
									MAP2002FT8	56.0	63.0
	2-5	6.4		5.4	MMU-AP0241H	7.1		8.0
	1-1	6.1		6.0	MMU-AP0241H	7.1		8.0
	1-2	6.3		6.3	MMU-AP0241H	7.1		8.0
1F
	1-3	7.2		7.0	MMU-AP0301H	9.0		10.0
	1-4	5.1		—	MMD-AP0181H	5.6		6.3

		Piping distance			Capacity correction		Capacity check after correction
				Height	Pipe correction x temp.			Capacity
			Equivalent
					correction
	Floor	Room No.		difference			Capacity (kW)		Judgment
			length (m)
				(m)
					Cooling	Heating	Cooling	Heating
		2-1					6.6	7.0
		2-2					5.2	5.5
	2F
		2-3				1.0	5.2	5.5
		2-4			1.0	×	3.3	3.5
					×	0.95

1.0×

2-5		34	5	×	0.98	6.6	7.0	good
				0.936	×
1-1				=	0.95	6.6	7.0
				0.936	=
					0.884
1-2						6.6	7.0
1F
1-3						8.4	8.8
1-4						5.2	5.5

23

Schematic diagram

MMY-MAP2002FT8

10 10

Outdoor unit

1st branching joint

4th branching

5th branching

3rd branching

2nd branching joint

joint

joint

joint

FS unit		FS unit	FS unit	FS unit	FS unit
RBM-Y1122FE		RBM-Y1122FE	RBM-Y1122FE	RBM-Y1122FE	RBM-Y1122FE
Indoor unit		Indoor unit	Indoor unit	Indoor unit	Indoor unit
MMU-AP0241H		MMU-AP0181H	MMU-AP0181H	MMU-AP0121H	MMU-AP0241H
R	R		R	R	R
Computer	Computer		Office	Office	Office
Room		Room
2 – 1		2 – 2	2 – 3	2 – 4	2 – 5
				Branching header
FS unit			FS unit	FS unit
RBM-Y1122FE
			RBM-Y1122FE	RBM-Y1122FE
Indoor unit		Indoor unit		Indoor unit	Indoor unit
MMU-AP0241H		MMU-AP0241H		MMU-AP0301H	MMD-AP0181H
R		R		R	R
					<Cooling only>
Store		Store		Restaurant	Kitchen
1 – 1			1 – 2	1 – 3	1 – 4

24

5. REFRIGERANT PIPING DESIGN

1. Warnings on refrigerant leakage Important

Check of Concentration Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit.

The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its concentration should rise excessively. Suffocation from leakage of R410A is almost non-existent. With the recent increase in the number of high concentration buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power etc.

Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air conditioners. If a single unit of the multi conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device.

The concentration is as given below.

Total amount of refrigerant (kg)

Min. volume of the indoor unit installed room (m³)

≤ Concentration limit (kg/m³)

The concentration limit of R410A which is used in multi air conditioners is 0.3kg/m³.

(For details, refer and comply with local regulations.)

NOTE 1 :

If there are 2 or more refrigerating systems in a single refrigerating device, the amounts of refrigerant should be as charged in each independent device.

Outdoor unit

e.g., charged

amount (10kg) e.g.,

charged amount (15kg)

Room A Room B Room C Room D Room E Room F

Indoor unit

For the amount of charge in this example:

The possible amount of leaked refrigerant gas in rooms A, B and C is 10kg.

The possible amount of leaked refrigerant gas in rooms D, E and F is 15kg.

NOTE 2 :

The standards for minimum room volume are as follows.

(1) No partition (shaded portion)

(2)When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).

Outdoor unit

Refrigerant piping

Indoor unit

(3)If an indoor unit is installed in each partitioned room and the refrigerant tubing is interconnected, the smallest room of course becomes the object. But when a mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

			Refrigerant piping
			Outdoor unit
	Very
	small		Indoor unit
	room
	Small	Medium	Large room
	room	room

Mechanical ventilation device - Gas leak detector

NOTE 3 :

The minimum indoor floor area compared with the amount of refrigerant is roughly as follows: (When the ceiling is 2.7m high)

	40
m² 35		Range below the
		density limit
	30	of 0.3 kg/m³
		(countermeasures
	25	not needed)
area
	20
floor	15		Range above
			the density limit
indoor	10		of 0.3 kg/m³
			(countermeasures
			needed)
Min.	5
	0
		10	20	30
		Total amount of refrigerant			kg

25

2. Free branching system

Line branching system

Header branching system

Header branching system after line branching

Line branching system after header branching

Header branching system after header branching

The above five branching systems are available to dramatically increase the flexibility of refrigerant piping design.

		Outdoor unit
		Branching joint
Line
branching
system		FS unit
		Indoor unit
		Remote
		controller
		Outdoor unit
Header		Branching header
branching
system		FS unit
		Indoor unit
		Remote controller
		Outdoor unit
Header		Branching joint
		Branching header
branching
system
after line		FS unit
branching		Indoor unit
		Remote
		controller
Line
branching		Outdoor unit
system after
header
branching		Branching header
		Branching
Header	FS unit	joint
branching	Indoor
system after	unit
header		Remote
branching		controller
		26

3. Allowable length/height difference of refrigerant piping

Height difference between outdoor units

H35m

Height difference between outdoor and indoor units

H1 50m

Follower Unit

C

Header Unit Follower Unit

A

B

Outdoor Unit

T-shape

La

Lb

Lc

branching

Main piping

LA

Note:

In case of connecting method <Ex.2>, a large amount of refrigerant and refrigerant oil may return to the head unit. Therefore, set the T-shape joint so that oil does not enter directly.

<Ex.1> Header Unit Follower Unit Follower Unit

A B C

Main connecting piping between outdoor units

<Ex.2> Header Unit Follower Unit Follower Unit

Length corresponded to farthest piping

A

B

C

between outdoor units LO 25m

L1

Branching

Branching piping L2 header

1st branching section

L3

Connecting piping of

indoor unit

L9

a

b

c

FS unit

g

h

i

j

k

Indoor unit

< Cooling only > < Cooling only >

Equivalent length corresponded to farthest piping L 150m

Equivalent length corresponded to farthest piping after 1st branching Li

50m

Lj

Height difference

between

L4

L5

L6

L7

L8

indoor

units

FS

unit

H2 35m

d

e

f

Lh

o

FS unit

(Upper outdoor unit)

l

m

n

Indoor unit

(Header)

p

q

(q)

Height difference between indoor units in group control by one FS unit

H40.5 m

* Allowable length and height difference of refrigerant piping

					Allowable value	Piping section
		Total extension of pipe (Liquid pipe, real length)			300 m	LA+La+Lb+Lc+L1+L2+L3+L4+L5+L6+L7+L8+9
						+a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q
		Farthest piping length L (*1)		Real length	125 m	LA+Lc+L1+L3+L4+L5+L6+L7+L8+q
				Equivalent length	150 m
		Max. equivalent length of main piping			85 m	L1
	Pipe	Equivalent length of farthest piping from 1st branching Li (*1)			50 m	L3+L4+L5+L6+L7+L8+q
	Length	Max. real length of indoor unit connecting piping			30 m	a+g, b+h, c+i, d+l, e+m, f+n, j, k
		Max. real length between FS unit and indoor unit (*2)			15 m	g, h, i, l, m, n, L7+o, L7+L8+p, L7+L8+q
		Max. Equivalent length of outdoor unit connecting piping LO (*1)			25 m	LA+Lc (LA+Lb)
		Max. real length of outdoor unit connecting piping			10 m	La, Lb, Lc
		Max. equivalent length between FS unit and indoor unit Lj			30 m	L7+L8+q, L7+L8+p
		Max. real length between FS unit		and header indoor unit Lh (*2)	15 m	L7+o
		Height between indoor		Upper outdoor unit	50 m	——
		and outdoor units H1		Lower outdoor unit	30 m	——
	Height	Height between indoor units H2		Upper outdoor unit	35 m	——
				Lower outdoor unit	15 m	——
	Difference
		Height between outdoor units H3			5 m	——
		Height difference between indoor units in group control by one FS			0.5 m	——
		unit H4

*1 : The farthest outdoor unit from 1st branch to be named C, and farthest indoor unit from 1st branch to be named (q).

*2 : Attached connection cable can be used up to 5 m in pipe length between indoor and FS unit. When the pipe length between indoor and FS unit exceeds 5 m, be sure to use the connection cable kit (RBC-CBK15FE).

* System restrictions

	Max. No. of combined outdoor units			3 units
	Max. capacity of combined outdoor units			84.0 kW
	Max. No. of connected indoor units			48 units
	Max. capacity of combined indoor units	H2		15m	135% (*1)
		H2	> 15m		105%

*1 : MMY-MAP1201HT8 : UP to 120 %

Note 1) Combination of outdoor units : Header unit (1 unit) + Follower unit (0 to 2 units). Header unit is outdoor unit nearest to the connected indoor units

Note 2) Install the outdoor units in order of capacity. (Header unit Follower unit 1 Follower unit 2)

Note 3) Refer to outdoor unit combination table in page.6.

Note 4) Piping to indoor units shall be perpendicular to piping to the head outdoor unit as <Ex.1>.

Do not connect piping to indoor units in the same direction of head outdoor unit as <Ex.2>.

27

4. Selection of refrigerant piping

Follower Unit Follower Unit Header Unit

Outdoor unit

1Outdoor unit connecting piping

C	B	A
		Balance pipe	1st branching section
			4	Liquid pipe
	1	1			8	Y-Shape branching joint
				Discharge gas pipe
				Suction gas pipe
	2	3 Main piping				4

9	T-shape	8
Main connecting piping	branching joint								8 Y-Shape branching joint
between outdoor units
			10		5	5		5
				FS unit
		4			6	6		6		7	7
									< Cooling only >		< Cooling only >
		Liquid pipe	8	4	8	4	8	4	4	4
		Discharge gas pipe
		Suction gas pipe
			10		5	5		5
				FS unit
					6	6		6		6	6	6

Indoor unit

Group control

* Selection of refrigerant piping

	No.	Item	Suction	Discharge	Liquid side		Outdoor unit model name
			gas side	gas side
		Pipe size of outdoor	Ø 22.2	Ø 19.1	Ø 12.7	—	MMY-MAP0802FT8
			Ø 22.2	Ø 19.1	Ø 12.7		MMY-MAP1002FT8
		unit
			Ø 28.6	Ø 19.1	Ø 12.7		MMY-MAP1202FT8
							Total capacity code of indoor units at
	No.	Item	Suction	Discharge	Liquid side	Balance	downstream side
			gas side	gas side		pipe	Equivalent to	Equivalent to HP
							capacity
		Connecting pipe size	Ø 28.6	Ø 22.2	Ø 15.9	Ø 9.5	Below 61.5	Below 22
		between outdoor units
			Suction	Discharge			Total capacity code of all outdoor units
	No.	Item			Liquid side		Equivalent to
			gas side	gas side				Equivalent to HP
							capacity
			Ø 22.2	Ø 19.1	Ø 12.7		Below 33.5	Below 12
		Size of main pipe	Ø 28.6	Ø 19.1	Ø 12.7	—	33.5	12
			Ø 28.6	Ø 22.2	Ø 19.1		45.0 to below 61.5	16 to below 22
			Ø 34.9	Ø 28.6	Ø 19.1		61.5 to below 73.0	22 to below 26
			Ø 34.9	Ø 28.6	Ø 22.2		73.0 or more	26 or more
			Suction	Discharge			Total capacity code of all indoor units
	No.	Item			Liquid side		Equivalent to
			gas side	gas side				Equivalent to HP
							capacity
			Ø 15.9	Ø 12.7	Ø 9.5		Below 18.0	Below 6.4
		Pipe size between	Ø 22.2	Ø 19.1	Ø 12.7	—	18.0 to below 34.0	6.4 to below 12.2
		branching sections	Ø 28.6	Ø 22.2	Ø 15.9		34.0 to below 56.5	12.2 to below 20.2
		*1 *2 *3	Ø 34.9	Ø 28.6	Ø 15.9		56.5 to below 70.5	20.2 to below 25.2
			Ø 34.9	Ø 28.6	Ø 19.1		70.5 or more	25.2 or more
		Pipe size between the	Ø 15.9	Ø 12.7	Ø 9.5	—	Below 18.0	Below 6.4
		end of branch and FS
			Ø 22.2	Ø 19.1	Ø 12.7		18.0 or more	6.4 or more
		unit
	No.	Item	Suction	Discharge	Liquid side		Capacity rank of indoor unit
			gas side	gas side
			Ø 9.5	—	Ø 6.4		007 to 012 Type
		Piping of indoor unit	Ø 12.7	—	Ø 6.4	—	015 to 018 Type
			Ø 15.9	—	Ø 9.5		024 to 056 Type
			Ø 22.2	—	Ø 12.7		072 to 096 Type
			Ø 9.5	—	Ø 6.4		15m or less	007 to 012 Type
		Piping of cooling only	Ø 12.7		Ø 9.5	—	15m above
		indoor unit (Between	Ø 12.7	—	Ø 6.4		15m or less	015 to 018 Type
		branching and indoor	Ø 15.9		Ø 9.5		15m above
		unit) *2	Ø 15.9	—	Ø 9.5	—	024 to 056 Type
			Ø 22.2	—	Ø 12.7		072 to 096 Type

* Selection for branching section

Selection of FS unit

		Total capacity code of			Max.No. of
	Model Name	indoor unit			connected
		Equivalent to	Equivalent		indoor
		capacity (kW)	to HP		units
	RBM-Y1122FE	Below 11.2	Below 4.0		5
	RBM-Y1802FE	11.2 to below	4.0 to below		8
		18.0	6.4
	RBM-Y2802FE	18.0 to 28.0	6.4 to 10.0		8
		or less	or less

* Minimum wall thickness for R410A

application

		Half	Outer	Outer	Minimum
	Soft	Hard			Wall
			dia.	dia.
		or	(Inch)	(mm)	Thickness
		Hard			(mm)
	OK	OK	1/4”	6.35	0.80
	OK	OK	3/8”	9.52	0.80
	OK	OK	1/2”	12.70	0.80
	OK	OK	5/8”	15.88	1.00
	NG	OK	3/4”	19.05	1.00
	NG	OK	7/8”	22.20	1.00
	NG	OK	1.1/8”	28.58	1.00
	NG	OK	1.3/8”	34.92	1.10

*1 In case the pipe exceeds main pipe size, it should be the same as main pipe size.

*2 2 pipes for cooling only indoor unit shall be used with liquid pipe and suction gas pipe.

*3 2 pipes from FS unit to branching section shall be used with liquid pipe and suction gas pipe.

*4 Branching pipe on the 1st branch should be selected according to the capacity code for outdoor unit.

*5 In case total capacity code for indoor units shall be exceeded to capacity code for outdoor unit, the pipe size should be selected with capacity code for outdoor unit.

*6 For 1 line after header branching, indoor units with a maximum of 6.0 capacity code in total can be connected.

No.			Total capacity code of indoor unit			Model Name
			Equivalent to capacity		Equivalent to HP	For 3 piping	For 2 piping
	Y-Shape branching joint		Below 18.0		Below 6.4	RBM-BY53FE	RBM-BY53E
			18.0 to below 40.0		6.4 to below 14.2	RBM-BY103FE	RBM-BY103E
	*4 *5		40.0 to below 70.5		14.2 to below 25.2	RBM-BY203FE	RBM-BY203E
			70.5 or more		25.2 or more	RBM-BY303FE	RBM-BY303E
	Branching	For	Below 40.0		Below 14.2	RBM-HY1043FE	RBM-HY1043E
		4 Branching	40.0 to below 70.5		14.2 to below 25.2	RBM-HY2043FE	RBM-HY2043E
	Header	For	Below 40.0		Below 14.2	RBM-HY1083FE	RBM-HY1083E
	*4, *5, *6
		8 Branching	40.0 to below 70.5		14.2 to below 25.2	RBM-HY2083FE	RBM-HY2083E
			1 set of 4 types of T-shape joint pipes as described below : The rewired
	T-Shape branching joint		quantity is arranged and combined at the site.
			- Balance pipe (Ø 9.52) X 1
	(For connecting outdoor		- Piping at liquid side (Ø 12.7 to Ø 22.2) X 1			RBM-BT13FE
	unit)		- Piping at discharge gas side (Ø 19.1 to Ø 28.6) X 1
			- Piping at suction gas side (Ø 22.2 to Ø 38.1) X 1

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5. Charging requirement with additional refrigerant

After the system has been vacuumed, replace the vacuum pump with a refrigerant cylinder and charge the system with additional refrigerant.

Calculating the amount of additional refrigerant required

Refrigerant in the system when shipped from the factory				R410A
		8HP	10HP	12HP
Refrigerant amount charged in factory	Heat recovery model	11.5kg	11.5kg	11.5kg

When the system is charged with refrigerant at the factory, the amount of refrigerant needed for the pipes at the site is not included. Calculate the additional amount needed, and add that amount to the system.

(Calculation)

Additional refrigerant charge amount is calculated from size of liquid pipe at site and its real length.

[Additional refrigerant charge amount at site] =
[Real length of liquid pipe] ×		Additional refrigerant charge amount		× 1.3 +	Compensation by
	per liquid pipe 1m (Table 1)				system HP (Table 2)

Example : Additional charge amount R (kg) = {(L1 x 0.025kg/m) + (L2 x 0.055kg/m) + (L3 x 0.105kg/m) + (L4 x 0.160kg/m) + (L5 x 0.250kg/m)} x 1.3

							L1		: Real total length of liquid pipe Ø6.4 (m)
							L2		: Real total length of liquid pipe Ø9.5 (m)
							L3		: Real total length of liquid pipe Ø12.7 (m)
							L4		: Real total length of liquid pipe Ø15.9 (m)
							L5		: Real total length of liquid pipe Ø19.1 (m)
							System : 24HP
Table 1
Pipe dia. at liquid side						Ø6.4			Ø9.5			Ø12.7	Ø15.9	Ø19.1	Ø22.2
Additional refrigerant amount/1m						0.025kg			0.055kg			0.105kg	0.160kg	0.250kg	0.350kg
Table 2
Combined		Outdoor					Compensation
horse power	combination (HP)						by system HP
(HP)							(kg)
8	8						2.0
10	10						2.5
12	12						3.0
16	8	8					-1.5
18	10	8					0.0
20	10	10					2.0
24	8	8		8			-4.5
26	10	8		8			-3.0
28	10	10		8			-1.5
30	10	10		10			0.0

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6. WIRING DESIGN

1.General

(1)Perform wiring of the power supply in conformance with the regulations of the local electric company.

(2)For the control wires connecting indoor units, and between indoor and outdoor units, use of double-core shield wires is recommended to prevent noise trouble.

(3)Be sure to set the earth leakage breaker and the switches to the power supply section of the indoor unit.

(4)Supply power to each outdoor unit and provide an earth leakage breaker or hand switch for each outdoor unit.

(5)Never connect the 220–240V power to the terminal block (U1, U2, U3, U4, U5, U6) for control cables. (Trouble is caused.)

(6)Store wiring system for control and refrigerant piping system in the same line.

(7)Arrange the cables so that the electric wires do not come to contact with high-temperature part of the pipe ; otherwise coating melts and an accident may be caused.

(8)Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe will finish.

2.For outdoor unit power supply

•Select the power supply cabling and fuse of each outdoor unit from the following specifications: Cable 5-core, in conformance with Design 60245 IEC 66

•Do not connect them via the incorporated terminal block (L1, L2, L3, N).

L1

L2 L3

N

Outdoor power supply 3-phase 380-415V, 50Hz

3. Electrical wiring design

L1 L2 L3

N

L1 L2 L3

N

3-phase

50Hz 380-415V

Earth leakage breaker hand switch

Outdoor power source

Earth

			Pull box
Indoor		FS unit	FS unit	FS unit	FS unit
power source
	Single phase
	50Hz 220-240V	Indoor unit	Indoor unit	Indoor unit	Indoor unit
	Earth leakage breaker
	power switch
		FS unit	FS unit	FS unit	FS unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

• Unit capacities and power supply wire sizes (Reference)

Model	Power supply wiring
MMY-	Wire size		Field fuse
MAP0802FT8	3.5 mm² (AWG #10) Max. 20 m		30 A
MAP1002FT8	5.5 mm² (AWG #10) Max. 28 m		30 A
MAP1202FT8	5.5 mm² (AWG #10) Max. 27 m		30 A

•Determine the wire size for indoor unit according to the number of connected indoor units downstream.

•Observe local regulation regarding wire size selection and installation.

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