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

DESIGN MANUAL

Heat Recovery Type (2 Series)

FILE NO. A04-017

R410A

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>

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

Outdoor Unit

<Inverter Unit>

MMY-MAP0802FT8
MMY-MAP1002FT8
MMY-MAP1202FT8

FS unit

RBM-Y1122FE
RBM-Y1802FE
RBM-Y2802FE

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

FS unit

Indoor unit

Header branching

Outdoor unit

Branching

header

FS unit

Indoor unit

Line + Header branching

Outdoor unit

Branching joint

Indoor
unit

Header

Line branching after header branching

Outdoor unit

8F

7F

2F

FS
unit

1F

Branching joint

Super HRM

MMS Only

Only

Indoor unit

Header

Header branching after header branching

Outdoor unit

Header

Super HRM

Only

Header

FS unit

Indoor unit

3

FS unit

• Non-polarized control wiring
between outdoor and indoor units

8F

7F

Outdoor unit

Indoor unit

FS unit

Indoor

unit

Heating Cooling Cooling Cooling

• Simultaneous operation

U1 U2

U1 U2 U1 U2 U1 U2

main heat exchanger

Sub heat exchanger

Outdoor unit

Compressor

2F

1F

Allowable pipe length :

Outdoor
unit

Height difference between indoor

unit and indoor unit : 35m

Height difference between indoor

unit and outdoor unit : 50m

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

150m equivalent length

1st branching
section

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

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

Combined model
Cooling capacity (kW)

Heating capacity (kW)

Combined outdoor units

No. of connectable indoor units

Corresponding HP

Combined model
Cooling capacity (kW)

Heating capacity (kW)

Combined outdoor units

No. of connectable indoor units

MMY- MAP0802FT8

MMY- AP2002FT8

8HP

22.4
25

8HP

13

20HP

56
63

10HP
10HP

33

10HP

MAP1002FT8

28

31.5

10HP

16

24HP

AP2402FT8

68

76.5
8HP
8HP
8HP

40

12HP

MAP1202FT8

33.5

35.5

12HP

16

26HP

AP2602FT8

73

81.5

10HP

8HP
8HP

43

AP1602FT8

AP2802FT8

3. FS units (Flow selector units)

Model name Usage

RBM-Y1122FE

RBM-Y1802FE

RBM-Y2802FE Total capacity for indoor unit : 18.0 to 28.0 kw or less

Total capacity for indoor unit : Below 11.2 kw

Total capacity for indoor unit : 11.2 to below 18.0 kw

16HP

45

50
8HP
8HP

27

28HP

78.5

88

10HP
10HP

8HP

47

AppearanceCorresponding HP

AP1802FT8

AP3002FT8

Appearance

18HP

50.4

56.5

10HP

8HP

30

30HP

84

95
10HP
10HP
10HP

48

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

*

4. Branching joints and headers

Model name Appearance

RBM-BY53FE

Y-shape
branching
joint (*3)

4-branching

header (*4) (*5)

8-branching

header (*4) (*5)

T-shape
branching
joint (For
connection
of outdoor
units)

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.

*

RBM-BY203FE
RBM-BY303FE

RBM-BY53E
RBM-BY103E
RBM-BY203E
RBM-BY303E

RBM-HY1043FE
RBM-HY2043FE

RBM-HY1043E

RBM-HY2043E
RBM-HY1083FE
RBM-HY2083FE

RBM-HY1083E

RBM-HY2083E

RBM-BT13FE

Indoor unit capacity code (*1) : Total below 6.4
Indoor unit capacity code (*1) : Total 6.4 or more and below 14.2RBM-BY103FE
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
Indoor unit capacity code (*1) : Total 25.2 or more
Indoor unit capacity code (*1) : Total below 6.4
Indoor unit capacity code (*1) : Total 6.4 or more and below 14.2
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
Indoor unit capacity code (*1) : Total 25.2 or more
Indoor unit capacity code (*1) : Total below 14.2
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
Indoor unit capacity code (*1) : Total below 14.2
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
Indoor unit capacity code (*1) : Total below 14.2
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
Indoor unit capacity code (*1) : Total below 14.2
Indoor unit capacity code (*1) : Total 14.2 or more and below 25.2
1 set 4 types T-shape joint pipes as described below:
The required quantity is arranged and they are combined on site.

Connection piping Corresponded dia. (mm) Q'ty
Balance pipe
Piping at liquid side
Piping at discharge gas side
Piping at suction gas side

Usage

Ø 9.5 1
Ø12.7 to Ø22.2
Ø19.1 to Ø28.6
Ø22.2 to Ø38.1

6

For 3
piping

For 2

piping (*6)

For 3
piping
For 2

piping (*6)

For 3
piping
For 2

piping (*6)

1
1
1

Super Heat Recovery Multi System Outdoor Unit

50Hz

HP (Capacity

code)

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

*

Model name

MMY-

12HP unit is for stand-alone usage only.
Outdoor unit combination with 12HP unit is not available.

No. of

combined

units

Inverter

8 HP

MMY-

Used

Q'ty

Inverter

10 HP
MMY-

Used

Q'ty

Inverter

12 HP
MMY-

Used

Q'ty

1. Allocation standard of model name

MMY– M AP T 8

F

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

FS unit

RBM-Y***1E

2 Series

RBM-Y***2E

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

*

1 Series 2 Series*

-MAP**1FT8 -MAP**2FT8

OK NG

OK OK

7

4. Indoor unit

*1) China only *2) European market only

Type Appearance Model name Capacity rank Capacity code

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
MMU-AP0181H 018 type 2 5.6 6.3
MMU-AP0241H 024 type 2.5 7.1 8.0
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
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
MMU-AP0151WH 015 type 1.7 4.5 5.0
MMU-AP0181WH 018 type 2 5.6 6.3
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*
MMU-AP0071YH 007 type 0.8 2.2 2.5
MMU-AP0091YH 009 type 1 2.8 3.2
MMU-AP0121YH 012 type 1.25 3.6 4.0
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
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
MMD-AP0181BH 018 type 2 5.6 6.3
MMD-AP0241BH 024 type 2.5 7.1 8.0
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
MMD-AP0181H 018 type 2 5.6 6.3
MMD-AP0241H 024 type 2.5 7.1 8.0
MMD-AP0271H 027 type 3 8.0 9.0
MMD-AP0361H 036 type 4 11.2 12.5
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
MMC-AP0151H 015 type 1.7 4.5 5.0
MMC-AP0181H 018 type 2 5.6 6.3
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
MMK-AP0071H 007 type 0.8 2.2 2.5
MMK-AP0091H 009 type 1 2.8 3.2
MMK-AP0121H 012 type 1.25 3.6 4.0
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
MMK-AP0072H 007 type 0.8 2.2 2.5
MMK-AP0092H 009 type 1.0 2.8 3.2
MMK-AP0122H 012 type 1.25 3.6
MML-AP0071H 007 type 0.8 2.2 2.5
MML-AP0091H 009 type 1 2.8 3.2
MML-AP0121H 012 type 1.25 3.6 4.0
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
MML-AP0071BH 007 type 0.8 2.2 2.5
MML-AP0091BH 009 type 1 2.8 3.2
MML-AP0121BH 012 type 1.25 3.6 4.0
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
MMF-AP0151H 015 type 1.7 4.5 5.0
MMF-AP0181H 018 type 2 5.6 6.3
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

1)

048 type 5 14.0 16.0

4-way Air Discharge
Cassette Type

2-way Air Discharge
Cassette Type

1-way Air Discharge
Cassette Type

Concealed Duct
Standard Type

Concealed Duct
High Static
Pressure Type

Under Ceiling Type

High Wall Type
(1 Series)

High Wall Type
(2 Series)

Floor Standing
Cabinet Type

Floor Standing
Concealed Type

Floor Standing Type

*2)

Cooling

capacity (kW)

8

Heating

capacity (kW)

18.0

8.0

18.0

31.5

16.0

8.0

4.0

8.0

8.0

18.0

5. Remote controller

Name

Wired remote controller

Model

name

RBC-AMT21E

Appearance Application

Connected to indoor unit

UNIT No.

R.C. No.

UNIT

CODE No.

Wired remote

controller

Wired remote controller
(In case of control by
2 remote controllers)

SET DATA

SETTING

TEST

CL

SET

Connected to indoor unit

TEST

SETTING

˚C
˚F

Function

• 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
ON or OFF is operated.

Combined with the weekly timer, weekly



schedule operation can be operated.

• Filter sign

Displays automatically maintenance time of
indoor filter.

Filter sign flashes.

• Self-diagnosis function

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.

• Start / Stop

• Temperature setting

• Air flow changing

• Check code display

Simple remote controller

Wireless remote controller kit

RBC-AS21E

Simple remote controller

Connected to indoor unit

• Start / Stop

• Changing mode

• Temperature setting

• Air flow changing

• Timer function

Either “ON” time or “OFF” time or “CYCLIC”
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)

TCB-AX21E RBC-AX22CE TCB-AX21U (W)-E

9

Name

Model

name

Appearance Application

Performance

Weekly timer

RBC-EXW21E

PROGRAM1

PROGRAM2

PROGRAM3

WEEKLY TIMER

SuMoTuWeTh Fr Sa

ERROR

Connected to central

remote controller,

wired remote controller

Wired

remote controller

Outdoor unit

Central

remote controller

Weekly

timer

Weekly

timer

• Weekly schedule operation

Setting different start / stop time for



each day of the week

ON / OFF can be easily set 3 times



a day.

ON

8:00 12:00 13:00 18:00 19:00 21:00

“CHECK” “PROGRAM” “DAY”



OFF ON OFF ON OFF

button make setting copy easy.

Two patterns of schedule for a



week can be specified.
(Summer schedule and winter
schedule, etc.)

“CANCEL” “DAY” button make



holiday setting easy.

If power supply fails, the setting



contents are stored in memory, for
100 hours.

TCB-SC642TLE

Central remote controller

ZONE

ALL
ZONE
GROUP

1234

UNIT No.

SET DATA

SETTING

R.C.

No.

SELECT ZONE

CL

SET

Connected to outdoor unit,

indoor unit

Outdoor

unit

• Individual control for max. 64 indoor
units divided 1 to 4 zone.

Up to 16 indoor units for each




zone




• Up to 16 outdoor header units are
connectable.

• 4 type central control setting to inhibit
individual operation by remote
controller can be selected.

• Individual control up to 64 indoor units.

CODE

TEST

No.

• Setting for one of 1 to 4 zone is
available.

• Usable with other central control
devices (Up to 10 central control

GROUP

Central

remote controller

devices in one control circuit)

• Two control mode selectivity

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

• Max. indoor unit : 13 units

• Capacity code of indoor unit : Min. : 5.6

Outdoor unit

8HP

10.4

4.8

007

(0.8)





Max. : 10.8



4.0 3.2 2.4 1.6

007

(0.8)

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

007

(0.8)

007

(0.8)

007

(0.8)

Capacity code

Total 10.4

No. of total units

13

Indoor unit
designation

Capacity
code

007

(0.8)

FS unit

Indoor unit

Remote
controller

5.6 4.8 4.0 3.2 2.4 1.6 0.8

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

11

10 HP system

• Max. indoor unit : 16 units

• Capacity code of indoor unit : Min. : 7

Outdoor unit

10HP





Max. : 13.5



Capacity code

Total 12.8

No. of total units

16

12.8

FS unit

Indoor unit

Remote
controller

6.4

007

5.6 4.8 4.0 3.2 2.4 1.6

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

6.4 5.6 4.8 4.0 3.2 2.4 1.6

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

(0.8)

007

(0.8)

007

(0.8)

12

12 HP system

• Max. indoor unit : 16 units

• Capacity code of indoor unit : Min. : 8.4

Outdoor unit

12HP





Max. : 14.4



Capacity code

Total 14.0

No. of total units

16

14.0

FS unit

Indoor unit

Remote
controller

6.4

007

5.6 4.8 4.0 3.2 2.4 1.6

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

7.6 6.8 6.0 5.0 4.0 3.0 2.0

007

(0.8)

007

(0.8)

009

(1.0)

009

(1.0)

009

(1.0)

009

(1.0)

009

(0.8)

(1.0)

007

(0.8)

009

(1.0)

13

20 HP system

• Max. indoor unit : 33 units

10





10HP10HP

Max. : 27

• Capacity code of indoor unit : Min. : 14

Outdoor unit

Capacity code

Total 26.75

No. of total units

19

26.75

16.5

FS unit

Indoor unit

Remote
controller

10.25 8.25

018

(2.0)

6.25 5.0 3.75 2.5

018

(2.0)

012

(1.25)

012

(1.25)

8.25 6.25 5.0 3.75 2.5

018

(2.0)

012

(1.25)

012

(1.25)

012

(1.25)

8.25 6.25 5.0 3.75 2.5

018

(2.0)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

012

(1.25)

14

30 HP system

• Max. indoor unit : 48 units

10HP 10HP10HP




Max. : 40.5



1020

• Capacity code of indoor unit : Min. : 21

Outdoor unit

Capacity code

Total 40

No. of total units

28

40

30

20

FS unit

10 9.2 8.4 7.6 6.8 6

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

018

10 9.2 8.4 7.6 6.8 6

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

018

10 9.2 8.4 7.6 6.8 6

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

007

(0.8)

018

10 9.2 8.4 7.6 6.8 6

(2)

(2)

(2)

036

(4)

036

(4)

036

(4)

Indoor unit

Remote
controller

007

(0.8)

007

(0.8)

007

(0.8)

15

007

(0.8)

007

(0.8)

018

(2)

036

(4)

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

6. Validate preliminary selection of indoor units

7. Confirmation of selection for indoor unit and outdoor units

NO

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

Capacity code

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

(Heat recovery)

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

007

0091012

0.8

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

1.25

Capacity code of

015

1.7

outdoor unit

0182024

2.5

027

3

Max. No. of

indoor units

030

0364048

3.2

Total capacity code

of indoor units

056

5

6

0728096

10

16

3. Cooling/heating capacity characteristics

1. Cooling capacity calculation method :
Required cooling capacity = Cooling capacity x Factor (

Indoor air wet bulb temperature vs. capacity correction value



1.2

1.1

1.0

0.9







,

,







,













1

,

*

) kW







0.8

Capacity correction value

15

20 24

Indoor air wet bulb temp. (˚C)

Outdoor air dry bulb temperature vs.capacity correction value



1.2

1.1

1.0

0.9

–5 0 5 10 15 20 25 30 35 40 43

Capacity correction value

Outdoor air dry bulb temp. (˚C)

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



1.1

1.0

0.9
80 90 100 110 120

Capacity correction value

1 : Coefficient to use for correction of outdoor unit capacity when total capacity of the indoor

*

Air flow variation ratio (%)

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



Outdoor unit (8 to 30HP)

50
40
30
20

%100

10

0
–10
–20
–30

Height of outdoor unit H (m)

98

20 30 40 50 60 70 80 90

100

Pipe length (Equivalent length) L (m)

96

92

94

ho l’o

908488

86

Outdoor unit

L’ is the longest one of
(l’o + l’a, l’o + l’b, l’o + l’c)

H = ho +
(Largest one of ha, hb, and hc)

82

80

100 110 120

78

130 140 150

76

Correction of outdoor unit diversity



hb

hc

120

100

80

60

40

Correction (%)

20

0

20 40 60 80 100 120 135

ha

l’a

l’b

l’c

A

B

Standard capacity ratio

Indoor units total capacity ratio (%)

Indoor unit

C

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 (

Indoor air dry bulb temperature vs. capacity correction value



1.2

1.1

1.0

0.9

0.8
15 20 24

Capacity correction value

Indoor air dry bulb temp. (˚C)

Outdoor air wet bulb temperature vs. capacity correction value









,

,

,

,

*1,

























*2) kW







1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5
–15 –10 –5 0 5 10 15

Capacity correction value

Outdoor air wet bulb temp. (˚C)

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



1.1

1.0

0.9
80 90 100 110 120

Capacity correction value

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.

*

Air flow variation ratio (%)

19

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



Outdoor unit (8 to 30HP)

50
40
30
20
10

100%

0
–10
–20
–30

Height of outdoor unit H (m)



100 2030405060708090

Pipe length (Equivalent length) L (m)

Correction of outdoor unit diversity

99

98

97

96

120

100

93

94

95

100 110 120 130 140 150

80

92

91

ho l’o

hb

hc

Outdoor unit

L’ is the longest one of
(l’o + l’a, l’o + l’b, l’o + l’c)

H = ho +
(Largest one of ha, hb, and hc)

ha

l’a

A

l’b

B

Indoor unit

l’c

C

60

40

Correction (%)

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

1.0

0.9

0.8

Capacity correction value

–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

= Capacity after correction of outdoor unit ×

5. Operating temperature range

Required standard capacity of indoor unit
Total value of standard indoor unit capacity

45

40

35

30

25

20

15

10

Outdoor air dry bulb temp. (˚C)

–5

–10

In cooling time

Continuously

operable

range

5

0

Indoor air wet bulb temp. (˚C)

Usable range

(in pull down)

Outdoor air wet bulb temp. (˚C)

3025 28201510

In heating time

20

15

10

5

Usable range

(in warming-up)

Continuously

operable

range

0

–5

–10

–15

–20

5 1015202530

Indoor air dry bulb temp. (˚C)

* The unit can be operated even if outdoor temperature gets down to -20°C, however note that the war-

ranty 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 control-

ler 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

2 – 12 – 22 – 3

1

–

1

1

–

3

1

–

2

1

–

4

2

–

42 – 5

Office rooms
(2–1, 2–2 : Computer room)

Stores
(1-4 : Kitchen)

1F

2F

Non-air conditioning zone

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>

8m

2F

1F

7.2m

14.4m

• 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 unit Outdoor unit

Capacity (kW) Capacity (kW)

Cooling Heating

Model

MMY-

Cooling Heating

Floor Room No.

2-1 6.0 3.4 MMU-AP0241H 7.1 8.0

2-2 5.0 2.2 MMU-AP0181H 5.6 6.3

Indoor air conditioning load

(kW)

Cooling Heating

Model

2F

1F

Floor Room No.

2F

1F

2-3 5.0 4.2 MMU-AP0181H 5.6 6.3

2-4 3.2 2.7 MMU-AP0121H 3.6 4.0

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

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

2-1 6.6

2-2 5.2 5.5

2-3 5.2

2-4 3.3 3.5

2-5 6.6

1-1 6.6

1-2 6.6

1-3 8.4 8.8

Equivalent

length (m)

34 5

Height

difference

(m)

MAP2002FT8 56.0 63.0

Pipe correction x temp.

correction

Cooling Heating Cooling Heating

1.0

1.0
×

1.0
×

0.936
=

0.936

×

0.95
×

0.98
×

0.95
=

0.884

Capacity

Capacity (kW)

7.0

5.5

7.0

7.0

7.0

Judgment

good

1-4

5.2 5.5

23

Schematic diagram

MMY-MAP2002FT8

10 10

Outdoor unit

1st branching joint

2nd branching
joint

3rd branching
joint

4th branching
joint

5th branching
joint

FS unit
RBM-Y1122FE

Indoor unit

MMU-AP0241H

MMU-AP0181H

RR R R R

1

FS unit
RBM-Y1122FE

Computer

Room

Computer

Room

2

–

Indoor unit

MMU-AP0241H

R

Store Store

1 – 11

FS unit
RBM-Y1122FE

Indoor unit

2 – 22

Indoor unit

MMU-AP0241H

FS unit
RBM-Y1122FE

Indoor unit

MMU-AP0181H

Office Office Office

–

32

FS unit
RBM-Y1122FE

R

–

21

FS unit
RBM-Y1122FE

Indoor unit

MMU-AP0121H

–

Branching header

FS unit
RBM-Y1122FE

Indoor unit

MMU-AP0301H

R

Restaurant

FS unit
RBM-Y1122FE

Indoor unit

MMU-AP0241H

42

–

5

Indoor unit

MMD-AP0181H

R

<Cooling only>

Kitchen

–

31

–

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.

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

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.

e.g., charged
amount (10kg)

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

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.

Outdoor unit

e.g.,
charged amount (15kg)

Indoor unit

Outdoor unit

Ver y
small
room

Small
room

Mechanical ventilation device - Gas leak detector

Medium
room

Large room

Indoor unit

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

Range below the

35

m²

density limit
of 0.3 kg/m³

30

(countermeasures
not needed)

25

20

15

10

5

Min. indoor floor area

0

10 20 30

Total amount of refrigerant

Range above
the density limit
of 0.3 kg/m³
(countermeasures
needed)

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
system

Header
branching
system
after line
branching

Line
branching
system after
header
branching

Indoor unit

Outdoor unit

FS unit

Indoor unit

Outdoor unit

FS unit

Branching joint

Remote

controller

Branching header

Remote controller

Branching header

Branching header

Header
branching
system after
header
branching

FS unit

Indoor
unit

Remote

controller

Branching
joint

26

g

3. Allowable length/height difference of refrigerant piping

Height
difference
between
outdoor
units

H3 5m

Height
difference
between
outdoor
and indoor
units

H1 50m

Outdoor Unit

T-shape
branching

Main piping

L1

1st branching
section

Follower Unit

C

Header Unit

Branching piping

Connecting piping of
indoor unit

L3

Equivalent length corresponded to farthest piping after 1st branching Li 50m

FS unit

Follower Unit

A

a

ghi j

Indoor unit

Equivalent length corresponded to farthest piping L 150m

L4 L5 L6 L7LhL8

def

lmn

Indoor unit

B

La Lb Lc

LA

Main connecting piping between outdoor units

Length corresponded to farthest piping
between outdoor units LO 25m

Branching

header

L2

L9

bc

FS unit

< Cooling only >

FS unit

k

o

(Header)

< Cooling only >

Lj

pq

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 UnitAFollower UnitBFollower Unit

<Ex.2>

Header UnitAFollower UnitBFollower Unit

Height difference
between
indoor
units

H2 35m

(Upper outdoor unit)

(q)

C

C

Height difference
between indoor units
in group control by
one FS unit
H4 0.5 m

* Allowable length and height difference of refrigerant piping

Allowable value Piping section

Total extension of pipe (Liquid pipe, real length) 300 m

Farthest piping length L (*1)

Real length 125 m

Equivalent length 150 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

LA+Lc+L1+L3+L4+L5+L6+L7+L8+q

Max. equivalent length of main piping 85 m L1

Equivalent length of farthest piping from 1st branching Li (*1) 50 m L3+L4+L5+L6+L7+L8+q

Pipe

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

30 m

15 m

50 m

L7+L8+q, L7+L8+p

L7+o

——

Height

Difference

Max. equivalent length between FS unit and indoor unit Lj

Max. real length between FS unit and header indoor unit Lh (

Height between indoor
and outdoor units H1

Upper outdoor unit

Lower outdoor unit 30 m ——

Upper outdoor unit 35 m ——

Height between indoor units H2

Lower outdoor unit 15 m ——

2)

*

Height between outdoor units H3 5 m ——

Hei

ht difference between indoor units in group control by one FS

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
Max. capacity of combined outdoor units
Max. No. of connected indoor units

Max. capacity of combined indoor units

1 : MMY-MAP1201HT8 : UP to 120 %

*

84.0 kW
48 units

H2 15m
H2

>

15m

3 units

135% (*1)
105%

Note 1) Combination of outdoor units : Header unit (1 unit) +

Note 2) Install the outdoor units in order of capacity.

Note 3) Refer to outdoor unit combination table in page.6.
Note 4) Piping to indoor units shall be perpendicular to piping to

0.5 m ——

Follower unit (0 to 2 units). Header unit is outdoor unit
nearest to the connected indoor units

(Header unit Follower unit 1 Follower unit 2)

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

Y

yp

yp

yp

g

g

4. Selection of refrigerant piping

Follower UnitCFollower UnitBHeader Unit

A

Outdoor unit

Balance pipe

2

9

T-shape
branching joint

1

Main piping

3

Outdoor unit

1

connecting piping

1

Main connecting piping
between outdoor units

* Selection of refrigerant piping

No. Item

Pipe size of outdoor



No. Item



No. Item

Size of main pipe



No. Item





No. Item

Piping of i ndoor unit





unit

Connecting pipe size

between outdoor units

Pipe size between

branching sections

*1 *2 *3

Pipe size between the

end of branch and FS

unit

Piping of cooling only

indoor unit (Between
branching and indoor

unit) *2

Suction

gas side

Suction

gas side

Suction

gas side

Suction

gas side

Suction

gas side

Discharge

Ø 9.5

Ø 9.5

gas side

Discharge

gas side

Discharge

gas side

Discharge

gas side

Discharge

gas side

Ø 22.2 Ø 19.1 Ø 12.7 MMY-MAP0802FT8
Ø 22.2 Ø 19.1 Ø 12.7 MMY-MAP1002FT8
Ø 28.6 Ø 19.1 Ø 12.7

Ø 28.6 Ø 22.2 Ø 15.9 Ø 9.5 Below 61.5 Below 22

Ø 22.2 Ø 19.1 Ø 12.7 Below 33.5 Below 12
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

Ø 15.9 Ø 12.7 Ø 9.5 Below 18.0 Below 6.4
Ø 22.2 Ø 19.1 Ø 12.7 18.0 to below 34.0 6.4 to below 12.2
Ø 28.6 Ø 22.2 Ø 15.9 34.0 to below 56.5 12.2 to below 20.2
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
Ø 15.9 Ø 12.7 Ø 9.5 Below 18.0 Below 6.4

Ø 22.2 Ø 19.1 Ø 12.7

Ø 12.7
Ø 15.9
Ø 22.2

Ø 12.7
Ø 12.7
Ø 15.9
Ø 15.9
Ø 22.2

Liquid side Outdoor unit model name

Liquid side

Liquid side

Liquid side

Liquid side Capacity rank of indoor unit

—
—
—
—
—

—

—
—

Ø 6.4 007 to 012 Type
Ø 6.4 015 to 018 Type
Ø 9.5 024 to 056 Type

Ø 12.7

Ø 6.4 15m or less
Ø 9.5 15m above
Ø 6.4 15m or less
Ø 9.5 15m above
Ø 9.5

Ø 12.7

* Selection for branching section

No.

Y-Shape branching joint

*4 *5



Branching

Header

*4, *5, *6

T-Shape branching joint

(For connecting outdoor



unit)

For

4 Branchin

For

8 Branchin

40.0 to below 70.5 14.2 to below 25.2 RBM-HY2043FE RBM-HY2043E

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

quantity is arranged and combined at the site.

- Balance pipe (Ø 9.52) X 1

- Piping at liquid side (Ø 12.7 to Ø 22.2) X 1

- 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

Total capacity code of indoor unit Model Name

Equivalent to capacity Equivalent to HP For 3 piping For 2 piping

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

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
Below 40.0 Below 14.2 RBM-HY1043FE RBM-HY1043E

Below 40.0 Below 14.2 RBM-HY1083FE RBM-HY1083E

1st branching section

Liquid pipe

4

Discharge gas pipe

Suction gas pipe

8

4

Liquid pipe

Discharge gas pipe

Suction gas pipe

—

Balance

pipe

Total capacity code of all outdoor units

MM

Total capacity code of indoor units at

Equivalent to

capacity

Equivalent to

capacity

-MAP1202FT8

downstream side

—

73.0 or more 26 or more

Total capacity code of all indoor units

Equivalent to

capacity

—

70.5 or more 25.2 or more

—

18.0 or more 6.4 or more

—

072 to 096 T

—

— 072 to 096 T

024 to 056 T

5 5 5

10

FS unit
6

8

8

4

5

10

FS unit
6

Indoor unit

Equival ent to HP

Equival ent to HP

Equival ent to HP

e

007 to 012 Type

015 to 018 Type

e
e

Y-Shape branching joint

8

4

Y-Shape branching joint

8

6 6

8

4

5 5

6 6 6 6 6

7 7

< Cooling only >

4

4 4

Group control

< Cooling only >

 Selection of FS unit

Total capacity code of

Model Name

RBM-Y1122FE Below 11.2 Below 4.0 5

RBM-Y1802FE

RBM-Y2802FE

* Minimum wall
thickness for R410A
application

Half

Outer

Hard

Soft

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

*2 2 pipes for cooling only indoor unit shall be

*3 2 pipes from FS unit to branching section shall

*4 Branching pipe on the 1st branch should be

*5 In case total capacity code for indoor units shall

*6 For 1 line after header branching, indoor units

RBM-BT13FE

dia.

or

(Inch)

Hard

should be the same as main pipe size.

used with liquid pipe and suction gas pipe.

be used with liquid pipe and suction gas pipe.

selected according to the capacity code for
outdoor unit.

be exceeded to capacity code for outdoor unit,
the pipe size should be selected with capacity
code for outdoor unit.

with a maximum of 6.0 capacity code in total
can be connected.

indoor unit

Equivalent to
capacity (kW)

11.2 to below

18.0

18.0 to 28.0
or less

Outer

dia.

(mm)

Minimum

Thickness

Equivalent

to HP

4.0 to below

6.4

6.4 to 10.0
or less

Wall

(mm)

Max.No. of
connected

indoor

units

8

8

28

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

11.5kg 11.5kg 11.5kgHeat recovery model

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
per liquid pipe 1m (Table 1) system HP (Table 2)

× 1.3

+Compensation by

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

Additional refrigerant amount/1m

Table 2

Combined

horse power

(HP)

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

Outdoor

combination (HP)

Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.1 Ø22.2

0.025kg 0.055kg 0.105kg 0.160kg 0.250kg 0.350kg

Compensation

by system HP

(kg)

29

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

3-phase
50Hz 380-415V
Earth leakage breaker

hand switch

Outdoor
power source

Indoor
power source

Earth

Single phase
50Hz 220-240V
Earth leakage breaker

power switch

FS unit

Indoor unit

FS unit

L1

L2

L3

N

L1

L2

FS unit

Indoor unit

FS unit

L3

N

Pull box

FS unit

Indoor unit

FS unit

FS unit

Indoor unit

FS unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

• Unit capacities and power supply wire sizes (Reference)

Model

MMY-

MAP0802FT8

MAP1002FT8

MAP1202FT8

Wire size

3.5 mm² (AWG #10) Max. 20 m

5.5 mm² (AWG #10) Max. 28 m

5.5 mm² (AWG #10) Max. 27 m

Power supply wiring

Field fuse

30 A

30 A

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.

30