Mitsubishi PUMY-P48NHMU, PUMY-P36NHMU, PUMY-P36NHMU-BS, PUMY-P48NHMU1, PUMY-P48NHMU2 Technical & Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

July 2008

No. OC366

REVISED EDITION-C

HFC

utilized

R410A

[Model name]

(Standard type)
PUMY-P36NHMU
PUMY-P48NHMU

[Service Ref.]

PUMY-P36NHMU
PUMY-P48NHMU
PUMY-P48NHMU1

(Salt proof type)
PUMY-P36NHMU-BS
PUMY-P48NHMU-BS

PUMY-P48NHMU2
PUMY-P36NHMU-BS

PUMY-P48NHMU-BS
PUMY-P48NHMU1-BS
PUMY-P48NHMU2-BS

Model name
indication

OUTDOOR UNIT

NOTE :

· This service manual describes technical data of out­door unit.

As for indoor units, refer to its service manual.

RoHS compliant products have <G> mark on the spec

·

name plate.

Revision:

• 9. TROUBLESHOOING
has been modified.

• Tester check point is added

(PCB, FAN MOTOR).

• Please void OC366

REVISED EDITION-B.

CONTENTS

1. TECHNICAL CHANGES

2. SAFETY PRECAUTION

3. OVERVIEW OF UNITS

4. SPECIFICATIONS

5. DATA

6. OUTLINES AND DIMENSIONS

7. WIRING DIAGRAM

8.

9. TROUBLESHOOTING

10. ELECTRICAL WIRING

11. REFRIGERANT PIPING TASKS

12. DISASSEMBLY PROCEDURE

13. PARTS LIST

14. RoHS PARTS LIST

15. OPTIONAL PARTS

................................................................

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

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2
5

8

10

12

18

20
24

34
81
84

88

93

96

99

1

TECHNICAL CHANGES

PUMY-P48NHMU1 PUMY-P48NHMU2
PUMY-P48NHMU1-BS PUMY-P48NHMU2-BS

· Compressor (MC) and oil have been changed.
ANB33FDCMT (Ester oil: MEL56) ANB33FDHMT(Ether oil: FV50S)

· Electrical parts have been changed.
Multi controller board (MULTI. C.B.) Noise filter circuit board (N.F.)
Active filter module (ACTM) Relay (52C) , Resister (RS) (including N.F.)

PUMY-P48NHMU PUMY-P48NHMU1
PUMY-P48NHMU-BS PUMY-P48NHMU1-BS

• Primary heating ON/OFF control has been added.

1-1. PRIMARY HEATING ON/OFF CONTROL SET-UP

(1) Primary heating operation controls another heat source that depends on the main system's operations,

which means the interlock operation shown in "c)" will be possible.

a)

Service ref. PUMY-P48NHMU(-BS)

b)

Indoor unit must be R410A UL model for this function to operate.
Note: Following Indoor models DO NOT HAVE this feature available:

PMFY-P06NBMU
PMFY-P08NBMU

c) Different Indoor unit applications that can be applied:

does not have this function.

PMFY-P12NBMU PKFY-P06NAMU
PMFY-P15NBMU PKFY-P08NAMU

(2) Outdoor unit DIPSW4-4 for Primary Heating Control:

Set DIPSW4-4 when power is turned off at unit.

OFF:

Disable Primary Heating Function (Initial setting)

ON :

Enable Primary Heating Function

(3) Determine required Indoor Fans Speed during defrost mode:

a) With no Primary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles.
b) With Primary heating control the auxiliary heat will be on during defrost mode, thus cold drafts will not be present.
(Ducted units only)
c) For models PEFY and PDFY (Ducted) recommended to use "Black" (20K) connector.
d) For models PLFY, PCFY, PKFY and PFFY (Ductless) recommended "None", no connector required.
e) To set the fan airflow rate to be used during defrost operation, insert the resistance that is packed within the
optional adaptor cable kit (PAC-YU24HT-F) into the CN22 sensor input.
You can choose at what speed the indoor fan operates during defrost cycles bases on chart below.

Fan airflow rate setting

During defrost operation

CN22 input resistance ()

CN22 input (cable color)

FAN SPEED SETTING

Note: The setting will be disabled "when Heater contact signal is OFF".

OFF

0 20k 27k 39k 62K

None Black Blue White Red

Stopped

Setting on

remote

controller

ON Wiring

Very Low Low High

CN22

2

(4) Determine Fan Airflow setting during Indoor Thermo OFF conditions:

A

a) These settings are done within Indoor DIPSW1-7 and DIPSW1-8, see chart below for options.
b) Recommended SW1-7 OFF and SW1-8 ON will determine airflow based on "Setting on the remote controller".

Auxiliary Heating

Signal

Thermo Condition

SW1-7 SW1-8

OFF OFF Very low

ON OFF Low

OFF ON

ON

ON

Fan speed

setting

OFF ON

Setting on

remote

controller

Stopped

Fan speed

setting

Setting on

remote controller

(5) Setting Outdoor unit and Auxiliary heat switch over temperatures.

When the DIPSW 4-4 is set to "ON", the outdoor unit and the contact output operates as shown below.

a) Outdoor default setting and operations are shown below:

Stage 1

mb. Decreasing - Outdoor unit HP operation

Amb. Incareasing - Defrost : Heater contact ON signal

- Other than defrost : Contact OFF

Stage 2

- Outdoor unit HP operation

- Heater contact ON signal

Stage 3

- Outdoor unit OFF (Standby)

a

-12:

[10F]

When the set temperature ranges overlap, the previously set pattern (1,2 or 3) has a priority.
The stage 1 has the highest priority, 2 the second and then 3.

b) Based on above chart listed the sequence of operation on "On Ambient Decrease"

Stage 1 :(TH7 = > 10
Stage 2 :(TH7 = 10

Stage 3 :(TH7 = < -12

c) Based on above chart listed the sequence of operation on " On Ambient Increase"

Stage 3 :(TH7 = < 0
Stage 2 :(TH7 = > 0

Stage 1 :(TH7 = > 20

b
0:

[32F]

c

10:

[50F]

:

) : the Outdoor unit runs in HP mode.

:

to -12:) : the Outdoor unit runs in HP mode with Auxiliary heating.

:

) : Auxiliary heating only (Outdoor unit is OFF).

:

) : Auxiliary heating only (Outdoor unit is OFF).

:

to 20:) : Auxiliary heating with Outdoor unit in HP mode.
:

) : Outdoor unit in HP mode only.

d

20:

[68F]

TH7 = Outdoor Temperature

- Heater contact ON signal

3

(6) Locally procured wiring

A basic connection method is shown.
(i.e. interlocked operation with the electric heater with the fan speed setting on high

Remote control Board Relay circuit

Adapter

Red 1

control board

CN24

Indoor unit

control board

Dip switch
SW4-4 "ON"

Outdoor unit

YellowGreen

CN22

Electric Heater

power source

Electric
Heater

Preparations in the field

X

X

+

White 2
Red 1

Red 2

Maximum cable length
is 10 m (32ft)

For relay X use the specifications given below Operation coil

Rated voltage : 12VDC
Power consumption : 0.9W or less

*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.
The length of the electrical wiring for the PAC-YU24HT is 2 meters (6-1/2 ft)
To extend this length, use sheathed 2-core cable.

Control cable type : CVV, CVS, CPEV or equivalent.
Cable size : 0.5 mm

2

~ 1.25 mm2 (AWG22 to AWG16)

Don`t extend the cable more than 10 meters (32ft).

Recommended circuit

Wiring digram

1-phase power
supply

208V, 230V/60Hz

R
S

R
S

Control board

88H

88H

CN24

88H

FS1

FS2
FS1

FS2

26H

H1

H2

FS1, 2 ----- Thermal fuse
H1, H2----- Heater
26H--------- Overheat protection

88H--------- Electromagnetic contactor

thermostat

4

2 SAFETY PRECAUTION

2-1. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

Avoid using thin pipes.

Make sure that the inside and outside of refrige­rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.

Contamination inside refrigerant piping can cause deterio­ration of refrigerant oil etc.

Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com­pressor.

Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.

If large amount of mineral oil enters, that can cause deterio­ration of refrigerant oil etc.

Charge refrigerant from liquid phase of gas
cylinder.

If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrige­rant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check
valve.

Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for
use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Tools for R410A
Gauge manifold
Charge hose

Gas leak detector

Torque wrench

Flare tool
Size adjustment gauge

Vacuum pump adaptor
Electronic refrigerant
charging scale

Keep the tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com­pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera­nt will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

5

Unit

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Tool name Specifications
1 Gauge manifold ·Only for R410A

·Use the existing fitting

·Use high-tension side pressure of 5.3MPa·G or over.
2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
4 Gas leak detector ·Use the detector for R134a, R407C or R410A.
5 Adaptor for reverse flow check ·Attach on vacuum pump.
6 Refrigerant charge base
7 Refrigerant cylinder ·Only for R410A ·Top of cylinder (Pink)

·Cylinder with syphon
8 Refrigerant recovery equipment

specifications

.

2-2. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the
performance of the unit.

1. Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.

2. If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away
by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)

3. To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.

4. If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.

5. If the unit is damaged during installation or maintenance, be sure to repair it.

6. Be sure to check the condition of the unit regularly.

7. Be sure to install the unit in a location with good drainage.

6

2-3. Cautions for refrigerant piping work

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is

same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the
working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness

shown below. (Never use pipes of 0.7mm [7/256 inch] or below.)

Diagram below: Piping diameter and thickness

Nominal

dimensions[inch]

1/4
3/8
1/2
5/8
3/4

Outside

diameter

6.35

9.52

12.70

15.88

19.05

(mm)

Thickness

R410A R22

0.8 [1/32]

0.8 [1/32]

0.8 [1/32]

1.0 [5/128]

—

2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,

R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other
refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have
been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for
R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to
copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes.

Use torque wrench corresponding to each dimension.

(mm) [inch]

0.8 [1/32]

0.8 [1/32]

0.8 [1/32]

1.0 [5/128]

1.0 [5/128]

Dimension A

Dimension B

Flare cutting dimensions

Nominal

dimensions[inch]

Outside

diameter
1/4
3/8
1/2
5/8
3/4

12.70

15.88

19.05

6.35

9.52

Dimension A

R410A R22

9.1 [11/32-23/64]

13.2 [1/2-33/64]

16.6 [41/64-21/32]

19.7 [49/64-25/32]
—

(mm) [inch]

+0

( )

-0.4

9.0

13.0

16.2

19.4

23.3

Flare nut dimensions

Nominal

dimensions[inch]

diameter[inch]
1/4
3/8
1/2
5/8
3/4

Outside

6.35

9.52

12.70

15.88

19.05

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

Tools and materials Use R410A tools Can R22 tools be used?
Gauge manifold

Charge hose
Gas leak detector

Refrigerant recovery equipment
Refrigerant cylinder
Applied oil

Safety charger

Charge valve
Vacuum pump

Flare tool

Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis­tor vacuum gauge and
vacuum valve
Charging cylinder

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.

Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section

Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge

Flaring work of piping

Bend the pipes
Cut the pipes
Weld the pipes
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri­gerant to thermistor vacuum gauge)
Refrigerant charge

Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A

Ester oil, ether oil and
alkylbenzene oil (minimum amount)

Tool exclusive for R410A

Tool exclusive for R410A
Tools for other refrigerants can

be used if equipped with adop­ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used

Tool exclusive for R410A

(Usable if equipped
with adopter for rever­ se flow)

(Usable by adjusting
flaring dimension)

(mm) [inch]

Dimension B

R410A R22

17.0 [43/64]

22.0 [7/8]

26.0 [1-3/64]

29.0 [1-9/64]
—

Can R407C tools be used?

Ester oil, ether oil:
Alkylbenzene oil: minimum amount

(Usable if equipped
with adopter for rever­ se flow)

(Usable by adjusting
flaring dimension)

17.0

22.0

24.0

27.0

36.0

7

3 OVERVIEW OF UNITS

3-1. UNIT CONSTRUCTION

Outdoor unit

Indoor unit that
can be connected

Branching pipe
components

Model

4-way flow

Capacity

06
08

12
15
18
24
27
30
36
48
54

PLFY-P PLFY-P PMFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PEFY-P

NCMU-E NBMU-E NLMU-E NBMU-E NMLU-E NMHU-E NMSU-E NMU-E NAMU-E NGMU-E NFMU-E NGMU-E NEMU-E NRMU-E NMHU-E-F

Capacity

Number of units
Total system wide capacity

CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E

Branch header

(2 branches)

Ceiling Casette

2-way flow

1-way flow

P36

Type 06 ~ Type 36

1~ 6 unit

50% ~130% of outdoor unit capacity

Branch header

(4 branches)

Ceiling Conceald mounted Wall Mounted

Ceiling

built-in Exposed Cocealed

P48

Type 06 ~ Type 54

1~ 8 unit

Branch header

(8 branches)

Ceiling

Supended

Floor Standing

Ceiling

Concealed

(Fresh Air)*1

Decorative panel

Remote

controller

Name

Model number

Functions

• A handy remote controller for use in conjunction
with the Melans centralized management system.

M-NET remote controller

• Addresses must be set.

*1. It is possible only by 1: 1 system.
(1 indoor unit of Fresh Air type is connected with 1 outdoor unit.)
Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units.
Refer to 3-2(2).

PAR-F27MEA-US

MA remote controller

PAR-21MAA

• Address setting is not necessary.

8

3-2. UNIT SPECIFICATIONS

(1) Method for identifying MULTI-S model

■

Indoor unit < When using Model 30 >

P L F Y - P 30 N B M U - E PU M Y - P 48 N H M U -BS

PAC type

L : Ceiling cassette
K : Wall-mounted type
E : Hidden skylight type
C : Ceiling suspended type
M : Ceiling cassette type
F : Floor standing type

NEW frequency converter
one-to-many air conditioners
(flexible design type)

Indicates equivalent
to Cooling capacity

Refrigerant
R410A/R22
commonness

Frequency
conversion
controller

Sub-number

UL model
M-NET control

Unit model type

Power supply
N: Single phase
208/230V 60Hz

Outdoor unit

MULTI-S

Indicates equivalent
to Cooling capacity

■

Outdoor unit <When using model 48 >

Refrigerant
R410A

Frequency
conversion
controller

Power supply
N: Single phase

208/230V 60Hz

UL model

M-NET control

Outdoor unit
model type

Salt proof
type

(2) Operating temperature range

Cooling
Indoor-side intake air temperature
Outdoor-side intake air temperature

W.B. 15~24°C [59~75°F]

D.B. -5~46°C [23~115°F]*1

D.B. 15~27°C [59~81°F]
W.B. -18~15°C [0~60°F]

Notes D.B. : Dry Bulb Temperature
W.B. : Wet Bulb Temperature
*1. 10~46°C DB[50~115°FDB] : In case of connecting PKFY-P06/P08 type indoor unit.

Heating

■ In case of connecting fresh air type indoor unit

Indoor-side and Outdoor-side
intake air temperature

Capacity of Fresh
air type indoor

P30
P54

Cooling
D.B.21~43[70~109°F] *2

W.B.15.5~35[60~95°F]
D.B.21~43[70~109°F] *2

W.B.15.5~35[60~95°F]

*2.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is lower than 21D.B.[70°FD.B.].
*3.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is higher than 20D.B.[68°FD.B.].

(3) Guaranteed voltage

198~253V, 60Hz

Heating
D.B.-10~20[14~68°F] *3

D.B.-5~20[23~68°F] *3

9

4 SPECIFICATIONS

Item

Cooling Capacity Btu/h
Heating Capacity Btu/h
Input(Cool
Input Current (Cool
Power factor (Cool)
Input(Heat
Input Current (Heat
Power factor (Heat)
EER(Cool
COP (Heat
Connectable indoor units (Max.
Max. Connectable Capacity Btu/h 46,800(130%
Power Supply Single phase ,60Hz,208/230V
Breaker Size
Max. fuse size
Min.Circuit.Ampacity
Sound level (Cool/Heat
External finish Munsell 3Y 7.8/1.1
Refrigerant control Linear Expansion Valve
Compressor Hermetic

Crankcase heater W —
Heat exchanger Plate fin coil (Anti corrosion fin treatment

Fan Fan(drive

Dimensions(HxWxD

Weight kg[lbs
Refrigerant R410A

Protection High pressure protection HP switch
devices Compressor protection Discharge thermo,Over current detection

Total Piping length (Max.
Farthest m [ft] 80 [262]
Max Height difference m [ft] 30 [100]*1
Chargeless length m [ft] 50 [165]

Guranteed operation range

)

)

)

)

Model
Motor output kW 2.2
Starting method Inverter

Fan motor output kW 0.086 + 0.086
Airflow m

Charge kg[lbs
Oil(Model

Fan motor protection Overheating/Voltage protection

Piping diameter

*3

)

*3
*3
*3

)

*3
*3
*3
*3

)

) %

No. Propeller fan % 2

)

)

)

Liquid :mm[inch] 9.52[3/8

Gas :mm[inch] 15.88[5/8

Rating conditions
Cooling Indoor : D.B. 26.7°C / W.B. 19.4°C
[D.B. 80°F / W.B. 67°F]
Outdoor : D.B. 35°C[D.B. 95°F]
Heating Indoor : D.B. 21.1°C[D.B. 70°F]
Outdoor : D.B. 8.3°C / W.B. 6.1°C

Service Ref.

kW

A

%

kW

A

%

Btu/h/W

W/W

)

dB 49 / 51

3

/min[CFM] 100 [3,530]

Wmm[in.

Dmm[in.
Hmm[in.

L [oz]

m [ft]

(

cool

(

heat

]
]
]

]

]

)
)

Note.*1. 20m[70ft] : In case of installing outdoor unit lower than indoor unit.
*2. 10~46°C[50~115°F]DB : In case of connecting PKFY-P06/P08 type indoor unit.
*3. Electrical data is for only outdoor unit.
(In case of connecting 2 indoor units of PLFY-P18BM type)
Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536
*Above specification data is subject to rounding variation.

PUMY-P36NHMU(-BS)

36,000
40,000

3.22

14.23/15.74

98.4

2.93

12.88/14.24

98.9

11.18

4.00
6

30A
40A
26A

ANB33FDHMT

950 [37-13/32]

330+30 [13+1-3/16

1,350 [53-5/32

130 [287]

8.5[18.7

2.3 [73] (FV50S

120 [394]

-5~ 46 DB [23~115

-18~ 15 WB [0~60

]

]

)

]

)

]

F DB]*2

°

F WB]

°

)

[D.B. 47°F / W.B. 43°F]

)

10

Item

Service Ref.

Cooling Capacity Btu/h
Heating Capacity Btu/h
Input(Cool
Input Current (Cool
Power factor (Cool)
Input(Heat
Input Current (Heat
Power factor (Heat)
EER(Cool
COP (Heat
Connectable indoor units (Max.

)

*3

)

*3
*3

)

*3

)

*3
*3

)

)

*3
*3

kW 4.97

A

%

kW 4.88

A 23.6/21.3

%

Btu/h/W

W/W

)

Max. Connectable Capacity Btu/h 62,400(130%

PUMY-P48NHMU/NHMU1/NHMU2(-BS)

48,000
54,000

24.0/21.7

99.5

99.5

9.66

3.24
8

)
Power Supply Single phase ,60Hz,208/230V
Breaker Size

Max. fuse size
Min.Circuit.Ampacity
Sound level (Cool/Heat

)

dB 50 / 52

30A
40A
26A

External finish Munsell 3Y 7.8/1.1
Refrigerant control Linear Expansion Valve
Compressor Hermetic

Model

ANB33FDCMT(NHMU

(1)), ANB33FDHMT(NHMU2)

Motor output kW 2.4

Starting method Inverter
Crankcase heater W —
Heat exchanger Plate fin coil (Anti corrosion fin treatment

Fan Fan(drive

) %

No. Propeller fan % 2
Fan motor output kW 0.086 + 0.086
Airflow m

Dimensions(HxWxD

)

Weight kg[lbs

3

/min[CFM] 100 [3,530]

Wmm[in.

Dmm[in.
Hmm[in.

]
]
]

]

950 [37-13/32]

330+30 [13+1-3/16

1,350 [53-5/32

]

130 [287]

)

Refrigerant R410A

Charge kg[lbs
Oil(Model

)

L [oz]

]

8.5[18.7

2.3 [73] (MEL56/NHMU

]

(1), FV50S/NHMU2)

Protection High pressure protection HP switch
devices Compressor protection Discharge thermo,Over current detection

Fan motor protection Overheating/Voltage protection

Total Piping length (Max.

)

m [ft]

120 [394]
Farthest m [ft] 80 [262]
Max Height difference m [ft] 30 [100]*1
Chargeless length m [ft] 50 [165]

Piping diameter

Guranteed operation range

Liquid :mm[inch] 9.52[3/8

Gas :mm[inch] 15.88[5/8

(

cool

(

heat

Rating conditions
Cooling Indoor : D.B. 26.7°C / W.B. 19.4°C
[D.B. 80°F / W.B. 67°F]
Outdoor : D.B. 35°C[D.B. 95°F]
Heating Indoor : D.B. 21.1°C[D.B. 70°F]
Outdoor : D.B. 8.3°C / W.B. 6.1°C

)

)

-5~ 46 DB [23~115°F DB]*2

-18~ 15 WB [0~60°F WB]

Note.*1. 20m[70ft] : In case of installing outdoor unit lower than indoor unit.
*2. 10~46°C[50~115°F]DB : In case of connecting PKFY -P06/P08 type indoor unit.
*3. Electrical data is for only outdoor unit.
(In case of connecting 2 indoor units of PLFY-P24BM type)
Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536
*Above specification data is subject to rounding variation.

]

]

[D.B. 47°F / W.B. 43°F]

)

11

5 DATA

5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS

5-1-1. Method for obtaining system cooling and heating capacity:

To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings
of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with
the help of the tables on 5-2.STANDARD CAPACITY DIAGRAM.

(1) Capacity of indoor unit

Model Number for indoor unit

Model Capacity

(2) Sample calculation

Model 06

Model 088Model1212Model 1515Model 1818Model 2424Model 2727Model 3030Model 3636Model 4848Model 54

6

54

1System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of

the outdoor unit)

• Outdoor unit PUMY-P48NHMU

• Indoor unit PKFY-P08NAMU-E o 2 , PLFY-P18NLMU-E o 2

2According to the conditions in 1, the total capacity of the indoor unit will be: 8 o 2 + 18 o 2 = 52
3The following figures are obtained from the 52 total capacity row of the standard capacity table (5-2.):

Capacity (Btu/h)

Cooling

48,900

A

Heating

54,500

B

Outdoor unit power consumption (kW)

Cooling

5.01

Heating

4.71

Outdoor unit current (A)/230V

Cooling

21.9

Heating

20.6

5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:

(1) The capacity of each indoor unit (Btu/h) = the capacity A(or B) o

(2) Sample calculation (using the system described above in 5-1-1. (2) ):

During cooling: During heating:

total model capacity of all indoor units

model capacity

• The total model capacity of the indoor unit is:
8000 o 2 + 18000 o 2=52000Btu/h
Therefore, the capacity of PKFY-P08NAMU-E and
PLFY-P18NLMU-E will be calculated as follows by
using the formula in 5-1-2. (1):

Model 08= 48,900o = 7,520 Btu/h

Model 18= 48,900o = 16,930 Btu/h

8000

52000
18000

52000

• The total model capacity of indoor unit is:
9000 o 2 + 20000 o 2=58000 Btu/h
Therefore, the capacity of PKFY-P08NAMU-E and
PLFY-P18NLMU-E will be calculated as follows by
using the formula in 5-1-2. (1):

Model 08=54,500 o = 8,460 Btu/h

Model 18= 54,500 o = 18,790 Btu/h

9000

58000

20000
58000

12

5-2. STANDARD CAPACITY DIAGRAM

* Before calculating the sum of total capacity of indoor units, please convert the value following the formula on 5-1-1.

5-2-1. PUMY-P36NHMU(-BS)

Total capacity
of Indoor units*

18 18,000 20,200 1.38 1.45 6.1 6.4 6.8 7.1
19 19,000 21,300 1.45 1.52 6.4 6.7 7.1 7.4
20 20,000 22,400 1.52 1.60 6.7 7.0 7.4 7.8
21 21,000 23,500 1.60 1.67 7.1 7.4 7.8 8.1
22 22,000 24,700 1.68 1.75 7.4 7.7 8.2 8.5
23 23,000 25,800 1.76 1.83 7.8 8.0 8.6 8.9
24 24,000 26,900 1.85 1.91 8.2 8.4 9.0 9.3
25 25,000 28,000 1.94 1.98 8.6 8.7 9.5 9.6
26 26,000 29,200 2.04 2.06 9.0 9.1 9.9 10.0
27 27,000 30,300 2.14 2.15 9.4 9.4 10.4 10.4
28 28,000 31,400 2.24 2.23 9.9 9.8 10.9 10.8
29 29,000 32,500 2.35 2.31 10.4 10.2 11.5 11.2
30 30,000 33,700 2.46 2.40 10.9 10.5 12.0 11.7
31 31,000 34,800 2.58 2.48 11.4 10.9 12.6 12.1
32 32,000 35,900 2.70 2.57 11.9 11.3 13.2 12.5
33 33,000 37,000 2.82 2.66 12.5 11.7 13.8 12.9
34 34,000 38,200 2.95 2.75 13.0 12.1 14.4 13.4
35 35,000 39,300 3.08 2.84 13.6 12.5 15.1 13.8
36 36,000 40,000 3.22 2.93 14.2 12.9 15.7 14.2
37 36,200 40,200 3.23 2.92 14.3 12.9 15.8 14.2
38 36,400 40,400 3.25 2.89 14.3 12.7 15.9 14.1
39 36,600 40,700 3.26 2.86 14.4 12.6 15.9 13.9
40 36,900 40,900 3.27 2.84 14.5 12.5 16.0 13.8
41 37,100 41,100 3.28 2.81 14.5 12.3 16.0 13.6
42 37,300 41,300 3.30 2.78 14.6 12.2 16.1 13.5
43 37,500 41,600 3.31 2.75 14.6 12.1 16.2 13.4
44 37,700 41,800 3.32 2.72 14.7 11.9 16.2 13.2
45 37,900 42,000 3.34 2.69 14.7 11.8 16.3 13.1
46 38,100 42,200 3.35 2.66 14.8 11.7 16.4 12.9

Note) In some combination patterns, numerical value of the heating data may differ slightly (CAPACITY : about several hun-

dred Btu/h)

Capacity(Btu/h)

Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power Consumption(kW)

Current(A)/230V Current(A)/208V

13

5-2-2. PUMY-P48NHMU/NHMU1/NHMU2(-BS)

Total capacity
of Indoor units*

24 24,000 26,900 2.11 2.32 9.2 10.2 10.2 11.2
25 25,000 28,000 2.20 2.41 9.6 10.5 10.6 11.6
26 26,000 29,200 2.29 2.50 10.0 10.9 11.1 12.1
27 27,000 30,300 2.38 2.59 10.4 11.3 11.5 12.5
28 28,000 31,400 2.48 2.68 10.8 11.7 12.0 13.0
29 29,000 32,500 2.58 2.78 11.3 12.1 12.4 13.4
30 30,000 33,700 2.68 2.87 11.7 12.6 12.9 13.9
31 31,000 34,800 2.78 2.97 12.2 13.0 13.4 14.4
32 32,000 35,900 2.89 3.07 12.6 13.4 14.0 14.8
33 33,000 37,000 3.00 3.17 13.1 13.9 14.5 15.3
34 34,000 38,200 3.11 3.28 13.6 14.3 15.0 15.8
35 35,000 39,300 3.23 3.38 14.1 14.8 15.6 16.3
36 36,000 40,400 3.35 3.49 14.6 15.2 16.2 16.9
37 37,000 41,500 3.47 3.60 15.2 15.7 16.8 17.4
38 38,000 42,700 3.60 3.71 15.7 16.2 17.4 17.9
39 39,000 43,800 3.72 3.82 16.3 16.7 18.0 18.5
40 40,000 44,900 3.85 3.93 16.8 17.2 18.6 19.0
41 41,000 46,000 3.99 4.05 17.4 17.7 19.3 19.6
42 42,000 47,200 4.12 4.17 18.0 18.2 19.9 20.1
43 43,000 48,300 4.26 4.28 18.6 18.7 20.6 20.7
44 44,000 49,400 4.41 4.41 19.3 19.3 21.3 21.3
45 45,000 50,500 4.55 4.53 19.9 19.8 22.0 21.9
46 46,000 51,700 4.70 4.65 20.5 20.3 22.7 22.5
47 47,000 52,800 4.85 4.78 21.2 20.9 23.4 23.1
48 48,000 54,000 4.97 4.88 21.7 21.3 24.0 23.6
49 48,300 54,200 4.98 4.83 21.8 21.1 24.1 23.3
50 48,500 54,300 4.99 4.79 21.8 20.9 24.1 23.2
51 48,700 54,400 5.00 4.75 21.8 20.8 24.1 23.0
52 48,900 54,500 5.01 4.71 21.9 20.6 24.2 22.8
53 49,100 54,600 5.01 4.67 21.9 20.4 24.2 22.6
54 49,300 54,800 5.02 4.63 21.9 20.2 24.3 22.4
55 49,600 54,900 5.03 4.59 22.0 20.1 24.3 22.2
56 49,800 55,000 5.04 4.55 22.0 19.9 24.3 22.0
57 50,000 55,100 5.04 4.51 22.0 19.7 24.4 21.8
58 50,200 55,200 5.05 4.47 22.1 19.5 24.4 21.6
59 50,400 55,300 5.06 4.43 22.1 19.4 24.4 21.4
60 50,600 55,500 5.07 4.39 22.1 19.2 24.5 21.2
61 50,800 55,600 5.07 4.35 22.2 19.0 24.5 21.0
62 51,100 55,700 5.08 4.31 22.2 18.8 24.6 20.8

Note) In some combination patterns, numerical value of the heating data may differ slightly (CAPACITY : about several hun-

dred Btu/h)

Capacity(Btu/h)

Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power Consumption(kW)

Current(A)/230V Current(A)/208V

14

5-3. CORRECTING COOLING AND HEATING CAPACITY

5-3-1. Correcting Changes in Air Conditions

(1)The performance curve charts (Figure 1, 2) show the ratio by the temperature condition change when the rated capacity (total

capacity) and the rated input are presumed 1, under standard length (7.6m [25ft]) and standerd temperature condition.

• Standard conditions:

Rated cooling capacity
Rated heating capacity

• Use the rated input and rated power values given in the characteristics table for each indoor unit.

• The input is the single value of the outdoor unit; the input of each indoor unit must be added to obtain the total input.
(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the
individual capacity at the rated time and the total capacity at the rated time.

Indoor D.B. 26.7°C / W.B. 19.4°C [D.B.80°F / W.B.67°F]
Outdoor D.B. 35°C [D.B.95°F]

Indoor D.B. 21.1°C [D.B.70°F]
Outdoor D.B. 8.3°C / W.B. 6.1°C [D.B.47°F / W.B.43°F]

Individual capacity under stated conditions = total capacity under the stated conditions o

(3)Capacity correction factor curve

Figure 1. Cooling performance curve

1.4

Cooling capacity (ratio)

1.2

1.0

0.8

0.6

1.4

1.2

Cooling power consumption
(ratio)

1.0

0.8

:WB(°FWB)

22 (71.6)
20 (68)
18 (64.4)
16 (60.8)

INDOOR

:WB(°FWB)

22 (71.6)
20 (68)
18 (64.4)
16 (60.8)

INDOOR

Figure 2. Heating performance curve

1.4

Heating capacity (ratio)

1.2

1.0

0.8

0.6

0.4

1.4

Heating power consumption

1.2

(ratio)

1.0

0.8

individual capacity at the rated time

total capacity at the rated time

:DB(°FDB)

15 (59)

21.1 (70)

25 (77)

INDOOR

:DB(°FDB)

21.1 (70)

15 (59)
25 (77)

INDOOR

0.6

0.4

-5 0 10 20 30 40 46

23 32 50 68 86 104 115

Outdoor Outdoor

°C DB
°F DB

15

0.6

0.4

-18
0

-12

-1014-523032541105015

10

59

°C WB

°F WB

5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping

• During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total
in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length from Figure 3
at first, and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.

• During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length
from Figure 3, and then multiply by the heating capacity from Figure 2 to obtain the actual capacity.

(1) Capacity CORRECTION CURVE (Figure 3)

Cooling

100

Heating

95

Heating P36, 48 models

90

85

Cooling P36 model

80

Capacity ratio [%]

Cooling P48 model

75

70

5 101520253035404550556065707580[m]

[16] [33] [50] [70] [80] [100] [115] [130] [150] [165] [180] [195] [215] [230] [245] [260][ft]

Corrected pipe length

(2) Method for Obtaining the Equivalent Piping Length

Equivalent length for type P48 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
Length of piping to farthest indoor unit: 80m [262ft]

5-3-3. Correction of Heating Capacity for Frost and Defrosting

If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.

Correction factor diagram

Outdoor Intake temperature (W.B.°F)

Outdoor Intake temperature (W.B.°C)

Correction factor

43

6

1.0

39

4

0.98

36

2

0.89

32

0

0.88

28

-2

0.89

25

-4

0.9

21

-6

0.95

18

-8

0.95

14

-10

0.95

16

5-4. NOISE CRITERION CURVES

PUMY-P36NHMU(-BS)

MODE
COOLING
HEATING

SPL(dB)

49
51

LINE

PUMY-P48NHMU(-BS)
PUMY-P48NHMU
PUMY-P48NHMU

1(-BS)
2(-BS)

MODE
COOLING
HEATING

SPL(dB)

50
52

LINE

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF
HEARING FOR
CONTINUOUS

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

NOISE

10

63 125 250 500 1000 2000 4000 8000

MICROPHONE

BAND CENTER FREQUENCIES, Hz

1m [3.3ft]

UNIT

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

1.5m

[4.9ft]

GROUND

17

6

OUTLINES AND DIMENSIONS

PUMY-P48NHMU
PUMY-P48NHMU-BS
PUMY-P48NHMU

1

PUMY-P48NHMU1-BS

19<3/4>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

175

<6-7/8>

Rear Air Intake

600<23-5/8>

175

<6-7/8>

Side Air Intake

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

417<16-13/32>

56<2-7/32>
37<1-15/32>

330<13>

70<2-3/4>

2-12%36 Oval hole

28<1-3/32> 370<14-9/16>

53<2-3/32>

Left …… For the power supply

Center … For the transmission line

Right…… For concentration control

Terminal block

42<1-21/32>

56<2-7/32>

Air Discharge

(Foundation Bolt M10<W3/8>)

30<1-3/16>

( )

Ground for the power supply

("GR"marking position)

950<37-13/32>

322<12-11/16>

Handle

Side Air Intake

Rear Air Intake

Ground for the transmission line

Ground for concentration control

Service panel

Handle

1088<42-27/32>

+1 507<19-31/32>

Handle

635<25>371<14-19/32>

1350<53-5/32>

Handle

+1 423<16-21/32>

2

1

23<29/32>

Front piping cover

Rear piping cover

71<2-13/16>

When installing the conduit.

Set the attachment to the

inner side of each panel.

Unit : mm <inch>

Bottom piping hole

(Knockout)

71<2-13/16>

219<8-5/8>

1/2 Conduit attachment

2-W22<7/8>

40<1-9/16>

Conduit hole

(2-W27<1-1/16>Knockout)

Rear trunking hole

(Knockout)

W92

74<2-19/32>

<3-5/8>

W33<1-5/16>

Drain hole

5-

145

<5-23/32>

145

<5-23/32>

145

<5-23/32>

220

<8-21/32>

81<3-3/16>

30<1-3/16>

31<1-7/32>

mm<inch>

Rear piping hole

(Knockout)

FOUNDATION

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

2 SERVICE SPACE 3 FOUNDATION BOLTS

Dimensions of space needed

for service access are

1 FREE SPACE (Around the unit)

The diagram below shows a

basic example.

<Foundation bolt height>

bolts.(Bolts and washers must

be purchased locally.)

<5-29/32>
Min.150mm

shown in the below diagram.

FREE

Explantion of particular details is

given in the installation manuals etc.

<19-11/16>
Min.500mm

Min.500mm

Service space

Min.10mm<3/8>

Min.10mm<3/8>

Min.10mm<3/8>

30mm<1-3/16>
Max.

<19-11/16>

Min.150mm<5-29/32>

Min.1000mm<39-3/8>

Handle

Example of Notes

……Refrigerant GAS pipe connction (FLARE):15.88 (5/8 inch)

……Refrigerant LIQUID pipe connection (FLARE): 9.52 (3/8 inch)

+1…..Indication of STOP VALVE connection location.

18

Air intake

55<2-3/16>

63<2-1/2>

73<2-7/8>

W92

63<2-1/2>

92<3-5/8>

73<2-7/8>

<2-1/2>
63

55<2-3/16>

W92

<3-5/8>

27<1-1/16>

<3-5/8>

92<3-5/8>

65<2-9/16>

27<1-1/16>

92<3-5/8>

55<2-3/16>

19<3/4>

73<2-7/8>

27<1-1/16>

65<2-9/16>

92<3-5/8>

23<29/32>

23<29/32>
23<29/32>

40<1-9/16>

Right trunking hole

(Knockout)

45<1-25/32>

Conduit hole

(2-W27<1-1/16>Knockout)

75

Right piping hole

(Knockout)

Conduit hole

(2-W27<1-1/16>Knockout)

40<1-9/16>

<2-31/32>

45<1-25/32>

40<1-9/16>

Piping Knockout Hole Details

Front piping hole

Front trunking hole

(Knockout)

(Knockout)

PUMY-P36NHMU

Min.500mm

<19-11/16>

Min.500mm

<19-11/16>

Min.150mm

<5-29/32>

Min.10mm<3/8>

Handle

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle

Service panel

Handle

31<1-7/32>

74<2-19/32>

40<1-9/16>

Max.

30mm<1-3/16>

The diagram below shows a

basic example.

Explantion of particular details is

given in the installation manuals etc.

Dimensions of space needed

for service access are

shown in the below diagram.

<Foundation bolt height>

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

bolts.(Bolts and washers must

be purchased locally.)

Air Discharge

Rear Air Intake

Side Air Intake

……Refrigerant GAS pipe connction (FLARE):15.88 (5/8 inch)

……Refrigerant LIQUID pipe connection (FLARE):9.52 (3/8 inch)

+1…..Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

1 FREE SPACE (Around the unit)

2 SERVICE SPACE 3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

front,right,rear and below.

1/2 Conduit attachment

2-W22<7/8>

When installing the conduit.

Set the attachment to the

inner side of each panel.

mm<inch>

FOUNDATION

Service space

Min.1000mm<39-3/8>

Min.10mm<3/8>

Min.10mm<3/8>

FREE

Min.150mm<5-29/32>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

Conduit hole

(2-W27<1-1/16>Knockout)

45<1-25/32>

Right trunking hole

(Knockout)

45<1-25/32> 40<1-9/16>

65<2-9/16>

92<3-5/8>

27<1-1/16>

55<2-3/16>

23<29/32>

73<2-7/8>

63<2-1/2>

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Conduit hole

(2-W27<1-1/16>Knockout)

W92

<3-5/8>

W92

<3-5/8>

19<3/4> 55<2-3/16>

92<3-5/8>

40<1-9/16>

73<2-7/8> 63<2-1/2>

23<29/32>

27<1-1/16>

92<3-5/8>

Conduit hole

(2-W27<1-1/16>Knockout)

75

<2-31/32>

Right piping hole

(Knockout)

40<1-9/16>

55<2-3/16>

73<2-7/8>

27<1-1/16>

23<29/32>

65<2-9/16>

92<3-5/8>

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

63

<2-1/2>

W92

<3-5/8>

30<1-3/16>

81<3-3/16>

219<8-5/8>

71<2-13/16>

71<2-13/16>

Bottom piping hole

(Knockout)

Drain hole

5-

W33<1-5/16>

220

<8-21/32>

145

<5-23/32>

145

<5-23/32>

145

<5-23/32>

Handle

600<23-5/8>

28<1-3/32>

370<14-9/16>

70<2-3/4>

56<2-7/32>

42<1-21/32>

56<2-7/32>
37<1-15/32>

19<3/4>

53<2-3/32>

417<16-13/32>

330<13>

175

<6-7/8>

175

<6-7/8>

2-12%36 Oval hole

(Foundation Bolt M10<W3/8>)

30<1-3/16>

1088<42-27/32>

322<12-11/16>

635<25>371<14-19/32>

950<37-13/32>

23<29/32>

1350<53-5/32>

+1 423<16-21/32>

+1 507<19-31/32>

Handle

1

2

( )

Left …… For the power supply

Center … For the transmission line

Right…… For concentration control

Terminal block

Ground for the transmission line

Ground for concentration control

Ground for the power supply

("GR"marking position)

PUMY-P36NHMU-BS
PUMY-P48NHMU

2

PUMY-P48NHMU2-BS

Unit : mm <inch>

19

7

WIRING DIAGRAM

PUMY-P48NHMU PUMY-P48NHMU-BS PUMY-P48NHMU1 PUMY-P48NHMU1-BS

SYMBOL NAME SYMBOL NAMESYMBOL NAME

TB1 Terminal Block <Power Supply>
TB3 Terminal Block <Transmission>
TB7 Terminal Block <Contralized Control>
MC Motor for Compressor
MF1,MF2 Fan Motor
21S4 Solenoid Valve<Four way valve>
SV1 Solenoid Valve<Bypass valve>
TH3
TH4 Thermistor<Discharge Temperature>
TH6
TH7 Thermistor<Outdoor Temperature>
TH8 Thermistor<Heatsink>
63HS
63H High Pressure Switch
63L Low Pressure Switch
CB Main Smoothing Capacitor
ACTM
RS Rush Current Protect Resistor
DCL
P.B. Power Circuit Board

U/V/W
TAB-S/T
TAB-P/P1/P2
TAB-N/N1/N2
CN2~5
CNDC
CNAF
IPM
LED1

Thermistor<Outdoor Pipe Temperature>

Thermistor<Low Pressure Saturated Temperature>

High Pressure Sensor<Discharge Pressure>

Active filter Module

Reactor

Connection Terminal<U/V/W-Phase>
Terminal<L/N-Phase>
Terminal<DCVoltage>
Terminal<DCVoltage>
Connector
Connector
Connector
Inverter
Light Emitting Diodes <Inverter Control Status>

MULTI.B.

F1,F2
F500
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SWU1
SWU2
TRANS
LED1,2
LED3
CNS1
CNS2
CNAC
CNDC
CN2
CN4
CN40
CN41
TH3
TH4
TH7/6
63HS
63H
63L
CNF1,CNF2
21S4
SV1
SS
CN3D
CN3S
CN3N
CN51
X501~505

Multi Controller Board
Fuse<6.3A>
Fuse<3A>
Switch<Display Selection>
Switch<Function Selection>
Switch<Test Run>
Switch<Model Selection>
Switch<Function Selection>
Switch<Function Selection>
Switch<Function Selection>
Switch<Function Selection>
Switch<Unit Address Selection, 1s digit>
Switch<Unit Address Selection, 10ths digit>
Transfomer
Digital Indicator<Operation Inspection Display>
LED<Power Supply to Main Microcomputer>
Connector<Multi System>
Connector<Centralized Cotrol>
Connector<To Noise Filter Circuit Board>
Connector<Power circuit board>
Connector<To Power Circuit Board>
Connector<To Power Circuit Board>
Connector<Centralized Cotrol Power Supply>
Connector<For storing Jumper Connector>
Connector<Thermistor>
Connector<Thermistor>
Connector<Thermistor>
Connector<High Pressure Sensor>
Connector<High Pressure Switch>
Connector<Low Pressure Switch>
Connector<Fan Motor>
Connector<Four-way Valve>
Connector<Bypass Valve>
Connector<For Option>
Connector<For Option>
Connector<For Option>
Connector<For Option>
Connector<For Option>
Relay

N.F. Noise Filter Circuit Board

LI/LO
NI/NO
EI
CNAC1/2
CN5

M-P.B.

CN1
CN2

Connection Lead<L-Phase>
Connection Lead<N-Phase>
Connection Terminal<Ground>
Connector
Connector
Transmission Power Board
Connector<To Noise Filter Circuit Board>
Connector<To Multi Controller Board>

Caution for electrical work

Use copper supply wires.

Cautions when Servicing

!

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2

minutes (input voltage: 240 V). When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then

wait for at least 1 minute.
Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.

NOTES:

1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch
(SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.

During normal operation
The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

When fault requiring inspection has occurred
The LED alternately indicates the inspection code and the location of the unit in which
the fault has occurred.

1

Compressor
operated

52C

2

3

21S44SV15(SV2)

[Example]
When the compressor and
SV1 are turned during cooling

6
–

7

–

8

Always lit

operation.

12345678

20

MF1

MF2

TB3

M1
M2

S

TO INDOOR UNIT

CONNECTING WIRES

DC 30V(Non-polar)

TB7

(ORN)

M1
M2

(ORN)

S

FOR CENTRALIZED

CONTROL

DC 30V(Non-polar)

POWER SUPPLY
~/N

NO FUSE

BREAKER

AC208V/230V
60Hz

L1
L2

GR

(BRN)

(BRN)

MULTI. B.

1

4567

1

4 567

F500

X505

52C

(BLK)

3

1

CNDC
(PNK)

X504

21S4

(GRN)

31

21S4

CB

CNF1

(WHT)

CNF2
(WHT)

31

(BLU)

3 1

+

SV2

TH8

X503

TH7TH6 TH3 TH463HS 63H63L

12 12 123 4

123

TH7/6

63HS

(RED)

(WHT)

63H

(YLW)

TRANS

X502

SS

SV1

(WHT)

(WHT)

3

21

SV1

52C

RS

P. B.

123

CNAF

4
5 6

(WHT)

12 12 12 123 4 567

CN2

(WHT)

CN3

(WHT)

CN5

(RED)

CN4

(WHT)

TABN
TABP

31

X501

1

TABP2

RED

TH3

(WHT)

F1
F2

+

V

U

WHT

MC

(WHT)

31

-

W

BLK

TH4

63L

(RED)

2

1

CNDC

+

CNAC

(RED)

DCL

ACTM

(PIN)

13

TABN1

LED3

+

-

TABN2

CNS1

(RED)

2

L1

CN3D
(WHT)

123

CN2

(WHT)

765

CNS2
(YLW)

121

L2

­+

­+

CN3S
(RED)

1 23

4 321

123456

TABT

~
~

TABS

~
~

TABP1

CN3N

P

N1
N2

I

(BLU)

123

(WHT)

CN4

21

CN51

(WHT)

SWU2 SWU1

4321

5

+1

CN41

(WHT)

31 3

CNAC2

(RED)

1

CNAC1

(WHT)

SW1

SW4

LED1

CN40

(WHT)
43214321

E I

SW5

SW3

88

LO
NO

CN5

(RED)

SW8

SW7

LED2

CN102
(WHT)
4 321

M-P.B.

N. F.

12

NILI

SW6

SW2

88

TP1

1 234

CN2

(WHT)

CN1

(WHT)

3 1

<+1 MODEL SELECT>

OFF

ON

SW4

123456

MODELS

PUMY-P48NHMU

(Note : Only PUMY-P48NHMU1 and PUMY-P48NHMU1-BS)

DIP SW4-4 for primary heating control : Set DIP SW4-4 when power is turned off at unit.
DIP SW4-4 OFF : Disable primary heating function (Initial setting)
DIP SW4-4 ON : Enable primary heating function

21

PUMY-P36NHMU PUMY-P36NHMU-BS PUMY-P48NHMU2 PUMY-P48NHMU2-BS

SYMBOL NAME SYMBOL NAME SYMBOL NAME

TB1 Terminal Block <Power Supply>
TB3 Terminal Block <Comunication Line>
TB7 Terminal Block <
MC Motor For Compressor
MF1,MF2 Fan Motor
21S4 Solenoid Valve<Four-Way Valve>
63H High Pressure Switch
63L Low Pressure Switch
63HS High Pressure Sensor
SV1 Solenoid Valve<Bypass valve>
TH3
TH4 Thermistor<Discharge>
TH6 Thermistor<Low Pressure Saturated>
TH7
TH8
DCL
ACTM
CE Main Smoothing Capacitor

Thermistor<Outdoor Pipe>

Thermistor<Outdoor>
Thermistor<Heatsink>
Reactor
Active Filter Module

Centralized Control Line>

Caution for electrical work

Use copper supply wires.

Cautions when Servicing

!

• WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2
minutes (input voltage: 240 V). When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then
wait for at least 1 minute.

• Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.

Do not replace the outdoor board without checking.

NOTES:

1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch
(SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.

• During normal operation

• The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

• When fault requiring inspection has occurred
The LED alternately indicates the inspection code and the location of the unit in which
the fault has occurred.

1

Compressor
operated

52C

2

21S4

P.B. Power Circuit Board

TABU/V/W
TABS/T
TABP1/P2/P
TABN1/N2/N
DS2,DS3
IPM

N.F. Noise Filter Circuit Board

LI/LO
NI/NO
EI,E2
52C

C.B.

SW1
SW2
SW3
SW4
SW5

3

SV1

Connection Terminal<U/V/W-Phase>
Connection Terminal<L/N-Phase>
Connection Terminal<DC Voltage>
Connection Terminal<DC Voltage>
Diode Bridge
Power Module

Connection Terminal<L-Phase>
Connection Terminal<N-Phase>
Connection Terminal<Ground>
52C Relay
Controller Circuit Board
Switch<Display Selection>
Switch<Function Selection>
Switch<Test Run>
Switch<Model Selection>
Switch<Function Selection>

4

5

(SV2)

SW6
SW7
SW8
SWU1
SWU2

CNLVB

SS
CN3D
CN3S
CN3N
CN51

LED1,LED2
LED3
F1,F2

X501~505

M-NET P.B.

TP1

6

-

7

-

8

Always lit

Switch<Function Selection>
Switch<Function Selection>
Switch<Function Selection>
Switch<Unit Address Selection, 1s digit>
Switch<Unit Address Selection, 10ths digit>
Connector<To N.F. Board CN52C>

(Symbol of Board is CNLVB)
Connector<Connection For Option>
Connector<Connection For Option>
Connector<Connection For Option>
Connector<Connection For Option>
Connector<Connection For Option>
LED<Operation Inspection Display>
LED<Power Supply to Main Microcomputer>
Fuse<T6,3AL250V>
Relay
M-NET Power Circuit Board
ConnectionTerminal<Ground>

[Example]
When the compressor and
SV1 are turned during cooling
operation.

12345678

22

C. B.

MF1

1

MS

3~

MF2

1

MS

3~

2

X505

52C

13

(BLK)

TB3

2

RED

M1

M2

RED

S

TO INDOOR UNIT
CONNECTING WIRES
DC 30V(Non-polar)

TB7

2

YLW

M1

M2

YLW

S

FOR CENTRALIZED
CONTROL
DC 30V(Non-polar)

POWER SUPPLY
~/N 208/230V 60Hz

TB1

RED

L1

BLU

L2

GRN

GR

CNF1

(WHT)

7

CNF2

(WHT)

7

3

1

3

21S4

CNDC
(PNK)

X504

21S4

1

(GRN)

TH8

TH7 TH6 TH3 TH4

63HS

3

63HS

(WHT)

TRANS

X503

3

1

4

7

2
2

WHT

CE

+

RED

141
TH7/6
(RED)

SV2

(BLU)

P. B.

1

CNAF

(WHT)
6
1

(WHT)

7

1
2

1
2

1

(WHT)

2

TH3

(WHT)

SV1

CN2

CN3

(WHT)

CN5

(RED)

CN4

TABN
TABP

63H

63L

t t t t t

2112

TH4

(WHT)

113

63L

(RED)

3

63H

(YLW)

F1

F2

X501

X502

SV1

1

3

12 12

(WHT)

IPM

TABP2

RED

RED

BLK

+

TABU

RED

V

U

MS

3~

DCL

+

-

ACTM

SS

(WHT)

TABV

BLK

WHT

W

L1 L2

-

MC

CN3D

CN3S

(WHT)

(RED)

131313

LED3

CNS1

(RED)

1

CNAC
(RED)

2

CNDC

(PIN)

2

1
3

TABN1

BLK

+

TABW

4

16

N1
N2

2

U

P

Io

CN3N
(BLU)

(WHT)

1

CNS2
(YLW)

1

22

TABN2

WHT

RED

WHT

CN2

DS3

­+

DS2

­+

1

2

CNLVB

SWU2SWU1

(RED)

16

CN51

(WHT)

7

7

TABT

TABS

TABP1

5

CN4

(WHT)

1

2

2

2

4

BLU

WHT

RED

CN41

(WHT)

SW6

SW5

SW2SW8SW1

CN40

LED1

1

3
1

CNAC2

3

1

CNAC1

CN102

(WHT)

4

(RED)

(WHT)

SW7SW3SW4

LED2

4

LO

L I

RED

1

WHT

52C

U

+1

(WHT)

1

4

2

2

NO

N I

BLU

BLU

U

5

N. F.

1

2

4

1

CN2

(WHT)

CN1

(WHT)

1
2

(BLK)

CN52C

E2

CN5

(RED)

E I

M-NET P.B.

4

TP1

1

2

2

BLK

2

BLK

BLK

+1 MODEL SELECT 1:ON 0:OFF

MODELS

PUMY-P36NHMU
PUMY-P48NHMU

SW4

123456
011010

011001

23

8

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

8-1. TRANSMISSION SYSTEM SETUP

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

005

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

004

003

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

105

Remote

controller

Remote

controller

Remote

controller

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

Indoor unitIndoor unitIndoor unitIndoor unitIndoor unit

006

007

Address SWAddress SWAddress SWAddress SWAddress SW

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

157

Remote

controller

107

Remote

controller

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

Address SWAddress SW

11

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

008

Piping

For remote

051

Outdoor unit

Transmission wire

controller

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit



3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

002

001

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

Address SW Address SW Address SW Address SW Address SW



connected to each refrigerant

system (outdoor and indoor).

 A transmission wire must be

 Set addresses:

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

102 104 154

Remote

controller

101

1111

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

Address SW Address SW Address SW Address SW Address SW

1

Remote

controller

Outdoor unit ..............051-100

Indoor unit .................001-050

Remote controller .....101-200

The address automatically become

"100" if it is set as "01~50".

 PUMY has no 100ths digit switch.

For remote

056

Outdoor unit

controller

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

009

8

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

010

3

2

4

1

5

0

6

9

7

8

3

2

4

1

5

0

6

9

7

8

For centralized

management

24

For centralized

management

8-2. REFRIGERANT SYSTEM DIAGRAM
PUMY-P48NHMU PUMY-P48NHMU1 PUMY-P48NHMU2

PUMY-P48NHMU-BS PUMY-P48NHMU1-BS PUMY-P48NHMU2-BS
PUMY-P36NHMU PUMY-P36NHMU-BS

Refrigerant flow in cooling
Refrigerant flow in heating

Service
port

Refrigerant Gas pipe

<5/8 inch>

Thermistor<Saturation temperature
of suction pressure>(TH6)

Check valve<Low pressure>

Refrigerant Liquid pipe

<3/8 inch>

Service port

Stop valve

Strainer

Accumulator

Stop valve

Strainer

4-way valve

Capillary tube

Strainer

Low pressure
switch(63L)

Pressure sensor
(63HS)

Solenoid
valve(SV1)

High pressure
switch(63H)

Check valve
<High pressure>

Oil separator

Strainer

Discharge
thermistor(TH4)

Compressor

Heatsink
thermistor(TH8)

Capillary tube (for oil separator) : :2.5 % :0.8 % L1000(mm) [:(3/32) % :(1/32) % L(39-1/2)] inch
Refrigerant pipng specifications <dimensions of flared connector>

Capacity

Item

Liquid piping Gas pipng

Thermistor(TH7)
(Outdoor temperature)

Distributor

Thermistor(TH3)
(Pipe temperature)

Unit:mm<inch>

Indoor unit

Outdoor unit

P06, P08, P12, P15, P18
P24, P30, P36, P48, P54
P36, P48

:6.35<1/4>
:9.52<3/8>
:9.52<3/8>

:12.7<1/2>
:15.88<5/8>
:15.88<5/8>

25

8-3. SYSTEM CONTROL

8-3-1. Example for the System

• Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed
in the standard system with detailed explanation.
The explanation for the system in this section : Use one single outdoor unit and multiple outdoor units for M-NET remote
control system.
Use one single outdoor unit and multiple indoor units in the multiple outdoor
units for the M-NET remote control system.
A. Example of a M-NET remote controller system (address setting is necessary.)

Example of wiring control cables Wiring Method and Address Setting

1. Standard operation

L

TB7

1

IC

01

TB5

TB15

M1M2

S

L3

l1

S12

AB

101

RC

OC

51

TB3

M1M2

SAB

• 1 remote controller for each
indoor unit.

• There is no need for setting the 100
position on the remote controller.

2. Operation using 2 remote controllers

OC

51

TB3

TB7

M1M2

SAB

•

Using 2 remote controllers

for each indoor unit.

S

AB AB AB AB

101

RC

(Main)

TB5

M1M2

IC

01

TB15

S12

151

RC

(Sub)

3. Group operation

OC

51

TB3

TB7

M1M2

SAB

S

• Multiple indoor units operated

TB5

M1M2

AB

101

RC

IC(Main)

01

S12

TB15

together by 1 remote
controller

Combinations of 1through 3 above are possible.

L2

IC

02

TB5

TB15

M1M2

S12

l2

AB

102

RC

IC

02

TB5

TB15

M1M2

S12

102

RC

(Main)

TB5

M1M2

152

RC

(Sub)

IC(Sub)

S122

02

a. Use feed wiring to connect terminals M1 and M2 on
transmission cable block (TB3) for the outdoor unit
(OC) to terminals M1 and M2 on the transmission
cable block (TB5) of each indoor unit (IC). Use
non-polarized 2 wire.
b. Connect terminals M1 and M2 on transmission
cable terminal block (TB5) for each indoor unit with
the terminal block (TB6) for the remote controller
(RC).
c. Set the address setting switch (on outdoor unit
P.C.B) as shown below.

Unit

Indoor unit (IC)

Outdoor unit

(OC)

Range

001 to 050
051 to 100

Setting Method

Use the smallest
address of all the indoor
unit plus 50.

Remote

controller (RC)

101 to 150

Indoor unit address plus

100.

a. Same as above.
b. Same as above.
c. Set address switch (on outdoor unit P.C.B) as
shown below.

Unit

Indoor Unit (IC)

Outdoor unit

(OC)

Main Remote

Controller (RC)

Sub Remote

Controller (RC)

Range

001 to 050
051 to 100
101 to 150

151 to 200

Setting Method

Use the smallest
address of all the indoor
units plus 50.
Indoor unit address plus

100.
Indoor unit address plus

150.

a. Same as above.
b. Connect terminals M1 and M2 on transmission cable
terminal block (TB5) of the IC main unit with the most
recent address within the same indoor unit (IC)
group to terminal block (TB6) on the remote controller.
c. Set the address setting switch (on outdoor unit P.C.B)
as shown below.

TB15

Unit

IC (Main)

IC (Sub)

Outdoor Unit

Main Remote

Controller

Sub Remote

Controller

Range

001 to 050

001 to 050

051 to 100
101 to 150
151 to 200

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

Use the smallest address of all the
indoor units plus 50.
Set at an IC (Main) address within
the same group plus 100.
Set at an IC (Main) address within
the same group plus 150.

Setting Method

d. Use the indoor unit (IC) within the group with the

most functions as the IC (Main) unit.

—

—

26

• Name, Symbol and the Maximum Remote controller Units for Connection
Name

Outdoor unit

Indoor unit

M-NET remote

controller

Symbol

OC

IC

RC

Maximum units for connection

—
One OC unit can be connected to 1-6(P36)/1-8(P48) IC units
Maximum 2 RC for 1 indoor unit, Maximum 16 RC for 1 OC

Permissible Lengths Prohibited items

Longest transmission cable length

2

(1.25 mm

1 + L2, L2 + L3, L3 + L1 [ 200m

L

[AWG16])

[656ft]
Remote controller cable length

1. If 0.5 to 1.25 mm

2

[AWG20 to AWG16]

1, R2 [10m [33ft]

R

2. If the length exceeds 10 meters
[33ft], the exceeding section

2

should be 1.25 mm

[AWG16]
and that section should be a
value within the total extension
length of the transmission cable
and maximum transmission
cable length. (L

3)

Same as above

• M-NET remote controller(RC) and MA remote controller(MA) cannot be used together.

• Do not connect anything with TB15 of indoor unit(IC).

TB3

M1M2

M1M2

OC

51

TB7

SAB

TB3

S

OC

51

TB7

SAB

S

IC

01

TB5

TB15

M1M2

S12

TB5

M1M2

AB

101

RC

IC

01

TB15

S12

TB5

M1M2

IC

02

TB15

S12

TB5

M1M2

IC

02

TB15

S12

AB

TB15

MA

• Use the indoor unit(IC)
address plus 150 as
the sub remote controller
address. In this case, it
should be 152.

• Three or more remote

AB AB AB AB AB

101

RC

(Main)

151

RC

(Sub)

102

RC

(Main)

103

RC

(Sub)

104

controller (RC) cannot
be connected to 1
indoor unit.

RC

Same as above

TB3

M1M2

OC

51

TB7

SAB

IC(Main)

01

TB5

TB15

S12

S

M1M2

TB5

M1M2

IC(Sub)

02

S122

TB15

• The remote controller
address is the indoor
unit main address plus

AB

100. In this case, it
should be 101.

102

RC

27

B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller.
(Shielding wires and address settings are necessary.)

L1

L2

Examples of Transmission Cable Wiring

L6L7

OC

(51)

TB3

M1M2S

M1 M2 S

TB7



OC

(53)

TB3

M1M2 S

M1 M2 S

TB7

Power Supply

Unit

M1M2S

G-50A

M1M2S

DV 12V



IC

(01)

TB5

M1 M2 S

1

N

AB AB AB

(101)

RC

L3

IC

(03)

TB5

M1 M2 S

IC

(02)

TB5

M1 M2 S

L4

IC

(04)

TB5

M1 M2 S

L5

4

N

AB

(104)

RC

TB5

M1 M2 S

2

N

(105)

RC

TB5

M1 M2 S

IC

(05)

N

IC

(07)

3

(155)

RC





IC

(06)

TB5

M1 M2 S



 : Group 1
 : Group 3
 : Group 5
 : Shielded Wire
 : Sub Remote Controller

( ): Address

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well
for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block
(TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the
indoor unit (IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most
recent address within the same group to the terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on MULTI controller board.
f. The earth processing of S terminal for the centralized control terminal block(TB7) is unnecessary.
Connect the terminal S on the power supply unit with the earth.
g. Set the address setting switch as follows.

IC (Main)

IC (Sub)

Wiring Method Address Settings

Outdoor Unit

Main Remote Controller

Sub Remote Controller

Unit

Range
01 to 00
01 to 50

51 to 100

101 to 150
151 to 200

MA Remote Controller

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

—

Setting Method

Use the smallest address within the same group of indoor units.
Use an address, other than that of the IC (Main) in the same group of indoor

units. This must be in sequence with the IC (Main).
Use the smallest address of all the indoor units plus 50.
*The address automatically becomes “100” if it is set as “01 - 50”.

Set at an IC (Main) address within the same group plus 100.
Set at an IC (Main) address within the same group plus 150.

Unnecessary address setting (Necessary main/ sub setting)

28

• Name, Symbol, and the Maximum Units for Connection

OC

• Longest length via outdoor units : L1+L2+L3+L4, L1+L2+L3+L5, L1+L2+L6+L7 [ 500 meters [1640ft] (1.25mm2 [AWG16])

• Longest transmission cable length : L

• Remote controller cable length : R

1, L3+L4, L3+L5, L6, L2+L6, L7 [ 200 meters (1.25mm

1,R2, R2+R3, R4 [ 10 meters [33ft] (0.5 to 1.25mm

If the length exceeds 10 meters [33ft], use a 1.25 mm

Permissible Length

length of this section (L
and overall length.

8) should be included in the calculation of the maximum length

2

[AWG16])

2

[AWG20 to AWG16])

2

[AWG16] shielded wire. The

Prohibited items

(51)

TB3

M1M2S

M1 M2 S

TB7



OC

(53)

TB3

M1M2 S

M1 M2 S

TB7

Power Supply

Unit

M1M2S

DV 12V

G-50A

M1M2S

 : Group 1
 : Group 3
 : Group 5
 : Shielded Wire
 : Sub Remote Controller

( ): Address

TB5

M1 M2 S

TB5

M1 M2 S

AB

(104)

RC

(02)

(04)

IC

IC

TB5

M1 M2 S

(105)

RC

TB5

M1 M2 S

IC

(05)

IC

(07)

IC

(01)

TB5

M1 M2 S

AB AB AB

(101)

RC

IC

(03)

TB5

M1 M2 S



(155)

RC



TB5

M1 M2 S

IC

(06)

• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to
different outdoor units (OC).

• Set all addresses to ensure that they are not overlapped.

• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring
together.

29

C. Example of a MA remote controller system (address setting is not necessary.)
NOTE : In the case of same group operation, need to set the address that is only main indoor unit.

Example of wiring control cables Wiring Method and Address Setting

1. Standard operation

a. Use feed wiring to connect terminals M1 and M2 on
transmission cable block (TB3) for the outdoor unit

L

TB3

M1M2

1 L2

OC

TB5

M1M2

IC

00

TB15

S12

TB5

M1M2

IC

00

TB15

S12

00

TB7

S

M1M2

S

(OC) to terminals M1 and M2 on the transmission
cable block (TB5) of each indoor unit (IC). Use
non-polarized 2 wire.
b. Connect terminals 1 and 2 on transmission cable
terminal block (TB15) for each indoor unit with the
terminal block for the MA remote controller (MA).

• 1 remote controller for each
indoor unit.

2. Operation using 2 remote controllers

OC

00

IC

00

TB3

TB7

M1M2

SM1M2

S

• Using 2 remote controllers

TB5

TB15

M1M2

S12

N3

AB

MA

for each indoor unit.

3. Group operation

OC

00

TB3

M1M2

S

TB7

M1M2

S

TB5

M1M2

N7

AB

N4

AB AB

MA

IC

00

TB15

S12

TB5

M1M2

N1

IC

00

S12

N5

TB15

AB

MAMA

AB

MA MA

IC

00

TB5

TB15

M1M2

S12

N2

a. The same as above.
b. The same as above.
c. In the case of using 2 remote controllers, connect

terminals 1 and 2 on transmission cable terminal
block (TB15) for each indoor unit with the terminal
block for 2 remote controllers.

N6

· Set the sub remote controller position for one of
MA remote controller’s main switch.

Refer to the installation manual of MA remote con-

troller

a. The same as above.
b. The same as above.
c. Connect terminals 1 and 2 on transmission cable ter-

minal block (TB15) of each indoor unit, which is doing
group operation with the terminal block the MA remote
controller. Use non-polarized tow wire.

d. In the case of same group operation, need to set the

address that is only main indoor unit. Please set the
address of the indoor unit with the most functions in
the same group in the number that 01-50 is young.

AB

• Multiple indoor units operated

MA

together by 1 remote
controller

Combinations of 1through 3 above are possible.

N8

30