Mitsubishi Heavy Industries SRR25ZM-S, SRR35ZM-S Technical Manual

TECHNICAL MANUAL

-ANUAL.Ogs324

INVERTER CEILING CONCEALED TYPE RESIDENTIAL AIR

CONDITIONERS

3PLITSYSTEMAIRTOAIRHEATPUMPTYPE

322:-3 322:-3

TECHNICAL MANUAL

updated April 10, 2017

'15 • SR-T-185

gs32+4

CONTENTS

1. SPECIFICATIONS ........................................................................................ 3

(2) Outdoor units ....................................................................................... 6

..................................................... 17

2EMOTECONTROL

..................................................................................... 7

......................................................................... 5

(1) Indoor units 

2. EXTERIOR DIMENSIONS

3. ELECTRICAL WIRING .............................................................................. 10

(1) Indoor units .......................................................................................... 10

4. NOISE LEVEL ............................................................................................ 12

5. CHARACTERISTICS OF FAN ................................................................... 16

(2) Outdoor units ....................................................................................... 11

7. RANGE OF USAGE & LIMITATIONS

................................................................................... 19

8. CAPACITY TABLES

6. PIPING SYSTEM ...................................................................................... 16

.................................................................................. 20

9. APPLICATION DATA

10. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 32

3ILENTMODE

............................... 33

/PERATIONCONTROLFUNCTIONBYWIRELESSREMOTECONTROL

4IMEROPERATION

3ELECTIONOFTHEANNUALCOOLINGFUNCTION .............................................. 34

)NSTALLINGTWOAIRCONDITIONERSINTHESAMEROOM

......................................................................... 33!UTORESTARTFUNCTION

5NIT/./&&BUTTON

........................................................................... 33

....................... 32

)NSTALLATIONOFINDOORUNIT ...................................................................... 20

)NSTALLATIONOFOUTDOORUNIT .................................................................. 24

%CONOMYOPERATION

.............................................................................. 34

(IGHPOWEROPERATION ........................................................................... 34





.IGHTSETBACK 

/UTLINEOFHEATINGOPERATION 

/UTLINEOFDRYDEHUMIDIFYINGOPRATION .............................................. 37

/UTLINEOFCOOLINGOPERATION ............................................................... 37

/UTLINEOFAUTOMATICOPERATION ........................................................... 38

0ROTECTIVECONTROLFUNCTION

................................................................... 38

)TEMSTOCHECKBEFORETROUBLESHOOTING ................................................. 44

............................................................................... 44

#AUTIONS

............................................................................................. 44

11. MAINTENANCE DATA

'15 • SR-T-185

(10) How to make sure of wireless remote control ...................................... 61

(12) Outdoor unit inspection points .............................................................. 62

(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 61

(8)

Phenomenon observed after shortcircuit, wire breakage on sensor

......... 59

(9) Checking the indoor electrical equipment

........................................... 59

■How to read the model name

Example: SRR 25 Z

Series code

Inverter type

Product capacity (Cooling capacity : 2.5kW)

Model name SRR : Ceiling concealed type

SRC : Outdoor unit

M-S

........................................................................................... 64

12. OPTION PARTS

...................................................................... 87

13. TECHNICAL INFORMATION

............................................................................ 64

..................................................................... 78

(1) Wired remote control (2) Interf

ace kit (SC-BIKN-E)

(3) Superlink E board (SC-ADNA-E) .......................................................... 82

(5) Remote sensor kit (SC-THB-E3) .......................................................... 85

(4) Bottom air inlet kit

(6) Service mode (Trouble mode access function) ................................... 47

(7) Inspection procedures corresponding to detail of trouble .................... 55

..................... 45

(4) Troubleshooting procedure (If the air-conditioner runs)

(5) Self-diagnosis table ............................................................................. 46

................................................................................ 84

(3) Troubleshooting procedure

(If the air-conditioner does not run at all)

........ 44

'15 • SR-T-185

1. SPECIFICATIONS

Model SRR25ZM-S

Model

Item

SRR25ZM-S

Indoor unit SRR25ZM-S Outdoor unit SRC25ZMX-S

Power source 1 Phase, 220 - 240V, 50Hz

Operation data

Nominal cooling capacity (range) kW 2.5 ( 1.0 (Min.) - 3.3 (Max.)) Nominal heating capacity (range) kW 3.4 ( 1.4 (Min.) - 4.8 (Max.))

Power consumption

Cooling

0.570 ( 0.21 - 0.86 )

Heating 0.750 ( 0.26 - 1.32 )

Max power consumption 1.65

Running current

Cooling

3.0 / 2.9 / 2.8 (220/ 230/ 240 V)

Heating 3.9 / 3.7 / 3.6 (220/ 230/ 240 V)

Inrush current, max current 3.9 / 3.7 / 3.6 (220/ 230/ 240 V), MAX 8

Power factor

Cooling

Heating 88 EER 4.39 COP 4.53

Sound power level

Cooling

dB(A)

56 60

Heating 59 60

Sound pressure level

①

Cooling Hi: 37 Me: 33 Lo: 30 ULo: 24 47

Heating Hi: 40 Me: 37 Lo: 34 ULo: 28 47

Sound pressure level

②

Cooling Hi: 31 Me: 28 Lo: 26 ULo: 21 47

Heating Hi: 33 Me: 30 Lo: 28 ULo: 23 47

Sound pressure level

③

Cooling Hi: 39 Me: 35 Lo: 32 ULo: 25 47

Heating Hi: 44 Me: 41 Lo: 38 ULo: 31 47 Silent mode sound pressure level — Cooling:41 / Heating:42

Exterior dimensions (Height x Width x Depth) mm 200 x 750 x 500 595 x 780(+62) x 290

Exterior appearance ( Munsell color ) —

Stucco white

( 4.2Y 7.5/1.1 ) near equivalent Net weight kg 20.5 35 Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) — 0.35 ( DIAMOND FREEZE MA68 ) Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m ) Heat exchanger Louver ﬁns & inner grooved tubing M ﬁns & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Q'ty Centrifugal fan x 2 Propeller fan x 1 Fan motor (Starting method) W 51 x1 (Direct drive) 24 x1 (Direct drive)

Air ﬂow

Cooling

m3/min

Hi: 9.5 Me: 8.0 Lo: 6.5 ULo: 4.5 29.5

Heating Hi: 10.0 Me: 9.0 Lo: 8.0 ULo: 6.0 27.0 Available external static pressure Pa 35 (Initial static pressure with air ﬁlter:5Pa) 0 Outside air intake Not possible — Air ﬁlter, Quality / Quantity Polypropylene net x 1 — Shock & vibration absorber Cushion rubber (for fan motor) Rubber sleeve (for fan motor & compressor) Electric heater — —

Operation control

Remote control Wireless remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, ECONO: Green

Safety equipments

Compressor overheat protection, Overcurrent protection, Drain error protection, Frost protection, Serial signal error protection, Indoor fan motor error protection, Heating overload protection( High pressure control ), Cooling overload protection

Installation data

Refrigerant piping size (O.D) mm Liquid line: φ6.35 ( 1/4" ) Gas line: φ9.52 ( 3/8" ) Connecting method Flare connection Flare connection Attached length of piping m — — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max. 15 Vertical height diff. between O.U. and I.U.

m Max. 10 (Outdoor unit is higher) / Max. 10 (Outdoor unit is lower)

Drain hose

Hose connectable ( VP 25 ) Holes φ20 x 2 pcs Drain pump, max lift height mm Built-in, MAX600 — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 3.1 / 2.9 / 2.8 (220/ 230/ 240 V) Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw ﬁxing type) IP number IPX0 IPX4 Standard accessories Mounting kit, Joint for drain piping Option parts Wired remote control, Interface kit ( SC-BIKN-E ), Bottom air inlet kit

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature

Outdoor air temperature

Standards Note

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C

ISO5151-T1

Non-duct

(with air ﬁllter)

Heating 20˚C — 7˚C 6˚C

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these

values are somewhat higher due to ambient conditions.

(4) Select the breaker size according to the own national standard.

The pipe length is 5m.

RWA000Z2 6 3

① ②

③

External static pressure for ②, ③ ： 10Pa

(5) Mike positions of measureing sound pressure

level of indoor unit is shown below.

'15 • SR-T-185

Model SRR35ZM-S

Model

Item

SRR35ZM-S

Indoor unit SRR35ZM-S Outdoor unit SRC35ZMX-S

Power source 1 Phase, 220 - 240V, 50Hz

Operation data

Nominal cooling capacity (range) kW 3.5 ( 1.0 (Min.) - 3.9 (Max.)) Nominal heating capacity (range) kW 4.2 ( 1.5 (Min.) - 5.2 (Max.))

Power consumption

Cooling

0.980 ( 0.21 - 1.20 )

Heating 1.030 ( 0.260 - 1.47 )

Max power consumption 1.65

Running current

Cooling

4.7 / 4.5 / 4.3 (220/ 230/ 240 V)

Heating 5.0 / 4.8 / 4.6 (220/ 230/ 240 V)

Inrush current, max current 5.0 / 4.8 / 4.6 (220/ 230/ 240 V), MAX 8

Power factor

Cooling

Heating 93 EER 3.57 COP 4.08

Sound power level

Cooling

dB(A)

57 62

Heating 60 62

Sound pressure level

①

Cooling Hi: 38 Me: 34 Lo: 31 ULo: 25 50

Heating Hi: 42 Me: 38 Lo: 35 ULo: 29 50

Sound pressure level

②

Cooling Hi: 33 Me: 30 Lo: 27 ULo: 22 50

Heating Hi: 34 Me: 32 Lo: 29 ULo: 24 50

Sound pressure level

③

Cooling Hi: 40 Me: 37 Lo: 33 ULo: 27 50

Heating Hi: 45 Me: 42 Lo: 39 ULo: 33 50 Silent mode sound pressure level — Cooling:45 / Heating:43

Exterior dimensions (Height x Width x Depth) mm 200 x 750 x 500 595 x 780(+62) x 290

Exterior appearance ( Munsell color ) —

Stucco white

( 4.2Y 7.5/1.1 ) near equivalent Net weight kg 20.5 35 Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.90 ( Inverter driven ) Refrigerant oil (Amount, type) — 0.35 ( DIAMOND FREEZE MA68 ) Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m ) Heat exchanger Louver ﬁns & inner grooved tubing M ﬁns & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Q'ty Centrifugal fan x 2 Propeller fan x 1 Fan motor (Starting method) W 51 x1 (Direct drive) 24 x1 (Direct drive)

Air ﬂow

Cooling

m3/min

Hi: 10.0 Me: 8.5 Lo: 7.0 ULo: 5.0 32.5

Heating Hi: 10.5 Me: 9.5 Lo: 8.5 ULo: 6.5 29.5 Available external static pressure Pa 35 (Initial static pressure with air ﬁlter:5Pa) 0 Outside air intake Not possible — Air ﬁlter, Quality / Quantity Polypropylene net x 1 — Shock & vibration absorber Cushion rubber (for fan motor) Rubber sleeve (for fan motor & compressor) Electric heater — —

Operation control

Remote control Wireless remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, ECONO: Green

Safety equipments

Installation data

Refrigerant piping size (O.D) mm Liquid line: φ6.35 ( 1/4" ) Gas line: φ9.52 ( 3/8" ) Connecting method Flare connection Flare connection Attached length of piping m — — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max. 15 Vertical height diff. between O.U. and I.U.

m Max. 10 (Outdoor unit is higher) / Max. 10 (Outdoor unit is lower)

Drain hose

Hose connectable ( VP 25 ) Holes φ20 x 2 pcs Drain pump, max lift height mm Built-in, MAX600 — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 4.6 / 4.4 / 4.2 (220/ 230/ 240 V) Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw ﬁxing type) IP number IPX0 IPX4 Standard accessories Mounting kit, Joint for drain piping Option parts Wired remote control, Interface kit ( SC-BIKN-E ), Bottom air inlet kit

Note (1) The data are measured at the following conditions.

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values

are somewhat higher due to ambient conditions.

(4) Select the breaker size according to the own national standard.

The pipe length is 5m.

RWA000Z2 6 3

(5) Mike positions of measureing sound pressure

level of indoor unit is shown below.

① ②

③

External static pressure for ②, ③ ： 10Pa

Item

Operation

Indoor air temperature

Outdoor air temperature

Standards Note

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C

ISO5151-T1

Non-duct

(with air ﬁllter)

Heating 20˚C — 7˚C 6˚C

'15 • SR-T-185

2. EXTERIOR DIMENSIONS

(1) Indoor units

Models SRR25ZM-S, 35ZM-S

RJJ000Z001

750

790（Suspension bolts pitch）

45722 21

500

380

168

105

200

326

413

660（Outlet dimension）

165

120

99 35

65 65

2020

370

（Suspension bolts pitch）

（Outlet dimension）

600 or less

（Max. drain lift）

235〜265

□120 19

660（Inlet dimension）

160 21

65 65

（Inlet dimension）

Air Inlet

167

29.57.5

68.7

101

Control box

suspension bolt

Hanger plate for

Air outlet

Connector

（Accessory）

（Installed on site）

Inspection hole

（450X450）,（320X770）

Gas piping

Liquid piping

Drain piping

Hole for wiring

Suspension bolts

（M10）

Symbol

Content

φ6.35（1／4"）（Flare）

φ9.52（3／8"）（Flare）

Drain piping

（Gravity drainage）

VP25（I.D.25 , O.D.32）

（Used with attached connector）

VP25（I.D.25 , O.D.32）

（Used with attached connector）

φ25 x 2

Unit:mm

Wired-remote control

（Option）

Wireless remote control

Remote control signal receiver

（Cord length 1.8m）

Notes（1）The model name label is attached

on the lid of the control box. （2）It takes the interface kit （SC-BIKN-E）

to connect the wired remote control.

100

450

750

200100

750

150 or more

770

or more

100 or more

1000

150 or more

320

Obstacle

View from top side of the unit

Obstacle

Rear-intake Ceiling-return type

Space for installation and service

'15 • SR-T-185

(2) Outdoor units

Models SRC25ZMX-S, 35ZMX-S

( )

9.52（3／8"）（Flare）

Content

Pipe／cable draw-out hole

Anchor bolt hole

Drain discharge hole

Symbol

Service valve connection（gas side）

M10×4places

20×2places

Service valve connection（liquid side）

6.35（1／4"）（Flare）

390.6

63.4

290

69.4

50.6

24.3

312.5

351.6

14.8

17.9

61.9

158.4

510

780

390.6

111.6

390.6

595

15.8

97.7

42.5

138.4

33.5

40°

Terminal block

L2 L3 L4

100 100

250

Open

ＩＩＩ

Open

250

280

ＩＩＩ

280

Open

Examples of

Dimensions

installation

ＩＶ

180

Open

Notes

（1） It must not be surrounded by walls on the four sides.

　（2） The unit must be fixed with anchor bolts. An anchor bolt must not

protrude more than 15mm.

　（3） Where the unit is subject to strong winds, lay it in such

a direction that the blower outlet faces perpendicularly to the dominant wind direction.

　（4） Leave 1m or more space above the unit. 　（5） A wall in front of the blower outlet must not exceed the units height. 　（6） The model name label is attached on the lower right corner of the front panel.

Minimum installation space

Unit:mm

Intake

Outlet

Intake

Service

space

RCV000Z020

'15 • SR-T-185

(3) Remote control

Unit : mm

167

(a) Wireless remote control

'15 • SR-T-185

(b) Wired remote control (option parts)

Interface kit (SC-BIKN-E) is required to use the wired remote control.

(i) Model RC-E5

PJZ000Z2 9 5

TEMP ON/OFF

□120

L C D

Wall surface

Wiring

Electrical box

（Not included）

Wiring specifications

Exposed mounting

11.5 11

Remote control outline

120

83.5

120

Remote control installation dimensions

Wiring oulet

Installation hole

12×7 Slot hole

9.5×5 Slot hole （4places）

（1） Installation screw for remote control

M4 Screw (2 pieces)

(1) If the prolongation is over 100m, change to the size below. But, wiring in the remote control case should be under 0.5mm2. Change the wire size outside of the case according to wire connecting. Waterproof treatment is necessary at the wire connecting section. Be careful about contact failure.

Length Wiring thickness

100 to 200m

0.5mm2×2 cores

0.75mm2×2 cores

1.25mm2×2 cores

2.0mm2×2 cores

Under 300m Under 400m Under 600m

Upper part

Lower part

Lower case

Sheath

Upper cace

Board

Wiring

Upper

Lower

X Y

Sheath

Upper cace

Board

Wiring

Upper

Lower

Tighten the screws after cutting off the thin part of screw mounting part.

Embedded mounting

Pearl WhiteExterior appearance

(Munsell color) (N8.5) near equivalent

The peeling-off length of sheath

The peeling-off length

of sheath

In case of pulling out from

upper left

In case of pulling out from upper left

X wiring : 170mm Y wiring : 190mm

Pulling out from center

X wiring : 215mm Y wiring : 195mm

Pulling out from upper left

In case of pulling out from center

Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife, and grind burrs with a file etc.

0.3mm2×2 cores.

X, Y Terminal block Attach M3 screw

with washer

Unit:mm

'15 • SR-T-185

Installation sp

R/C

abl

e：0

.3mm

× 2-co

dapted to R

oHS

directive

Exterior appearance (Munsell color)

Pearl White (N8.5) near equivalent

PJZ000 Z297

(ii) Model RC-EX1A

'15 • SR-T-185

3. ELECTRICAL WIRING

(1) Indoor units

Models SRK25ZM-S, 35ZM-S

RJJ000Z0 0 3

TO OUTDOOR UNIT

RECEIVER

BKRDWH

CNG

DISPLAY

WIRELESS

CNE

PRINTED CIRCUIT

BOARD

CNU

1 3 54 6

Y／G

2／N

WHBKY／G

S／N

2 2

CNW

F 0.16A L 250V

F 3.15A L 250V

CNS

゜t゜t゜

1〜

CNY

Color Marks

Blue

BlackBK

Red

BL RD

WhiteWH YellowY

ColorMark

Heat exchanger sensor

Fan motor Room temp. sensorTh1

Th2

1,2

Diode stackDS FuseF

1,2

ConnectorCNE

Terminal blockTB

Description

Item

Drain motorDM

CNG CNS CNU CNW CNY

Th1

Th2

Th22

Yellow／GreenY／G

Float switchFS VaristorVa

INTERFACE KIT

SC-BIKN

Power source 1 Phase 220／230／240V 50Hz

'15 • SR-T-185

(2) Outdoor units

Models SRC25ZMX-S, 35ZMX-S

RWC000Z272

Description

Item

Connector

Electric expansion valve（coil）

EEV

Fan motorFMo ReactorL Terminal blockTB1

Compressor motorCM

Solenoid valve for 4 way valve20S

Heat exchanger sensor（outdoor unit）

TH2

Outdoor air temp.sensorTH3

TH4 Discharge pipe temp.sensor

CN20S CNTH CNEEV CNFAN

Color

Mark

OrangeOR

Yellow／Green

Y／G

Black

YellowY

WhiteWH

Red

Power cable, indoor-outdoor connecting wires

・The specifications shown in the above table are for units without heaters. For units with heaters, refer

to the installation instructions or the construction instructions of the indoor unit.

・Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen

along the regulations in each country.

・The cable specifications are based on the assumption that a metal or plastic conduit is used with no

more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.

Model

MAX running current

Power cable size

（mm ）

（A）

Power cable length

（m）

indoor-outdoor

wire size x number

Earth wire size

2.0

1.5mm x 3

1.5

（mm ）

TO INDOOR UNIT

POWER WIRES SIGNAL WIRE

Power source

TB1

TERMINAL BLOCK

（BK）

R.IN

250V 15A

（BK）

（WH）

（Y／G）

（RD）

C-2 G1

S.IN

FILTER

NOISE

250V 3.15A

（OR）

（Y）

20S

2 2 2

CN20S CNTH CNEEV

TH2 TH3 TH4

EEV

CIRCUIT

POWER

SWITCHING

250V 10A

CIRCUIT

PAM

250V 20A

PCB ASSY PCB1

TRANSISTOR

POWER

（BK）

（WH）

（RD）

3～

F3 250V 1A

CNFAN

FMo

1Phase AC 220ｰ240V 50Hz

'15 • SR-T-185

(Indoor Unit) Model SRR25ZM-S

Noise

Level

Cooling 37 dB(A) Heating 40 dB(A)

......

Cooling Heating

(Outdoor Unit) Model SRC25ZMX-S

Noise

Level

Cooling 47 dB(A) Heating 47 dB(A)

......

Cooling Heating

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

Mike position

0.8m

Unit

Mike position (Center & Low points)

4. NOISE LEVEL

Model SRR25ZM-S ◦Sound pressure level

①

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

●Mike position

1.5m

Unit

Air

Condition

ISO5151 T1,JIS C 9612

MODE Rated capacity value

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

'15 • SR-T-185

(Indoor Unit) Model SRR25ZM-S

Noise

Level

Cooling 31 dB(A) Heating 33 dB(A)

......

Cooling Heating

(Indoor Unit) Model SRR25ZM-S

Noise

Level

Cooling 39 dB(A) Heating 44 dB(A)

......

Cooling Heating

◦Sound pressure level

②

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

Condition

ISO5151 T1,JIS C 9612

MODE Rated capacity value

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

1.5m

Unit

Supply duct

Return duct

External staic pressure : 10Pa

●Mike position

Air

◦Sound pressure level

③

Unit

Supply duct

Return duct

Air

External staic pressure : 10Pa

●Mike position

'15 • SR-T-185

(Indoor Unit) Model SRR35ZM-S

Noise

Level

Cooling 38 dB(A) Heating 42 dB(A)

......

Cooling Heating

(Outdoor Unit) Model SRC35ZMX-S

Noise

Level

Cooling 50 dB(A) Heating 50 dB(A)

......

Cooling Heating

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

Mike position

0.8m

Unit

Mike position (Center & Low points)

Model SRR35ZM-S ◦Sound pressure level

①

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

●Mike position

1.5m

Unit

Air

Condition

ISO5151 T1,JIS C 9612

MODE Rated capacity value

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

'15 • SR-T-185

(Indoor Unit) Model SRR35ZM-S

Noise

Level

Cooling 33 dB(A) Heating 34 dB(A)

......

Cooling Heating

(Indoor Unit) Model SRR35ZM-S

Noise

Level

Cooling 40 dB(A) Heating 45 dB(A)

......

Cooling Heating

◦Sound pressure level

②

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

Condition

ISO5151 T1,JIS C 9612

MODE Rated capacity value

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(Standard 2×10

-5

P a )

N50

N30

N40

N60

N70

N20

1.5m

Unit

Supply duct

Return duct

External staic pressure : 10Pa

●Mike position

Air

◦Sound pressure level

③

Unit

Supply duct

Return duct

Air

External staic pressure : 10Pa

●Mike position

'15 • SR-T-185

Models SRK20ZJX-S, 25ZJX-S, 35ZJX-S

Indoor unit

Outdoor unit

Flare connection

Liquid pipe

(φ6.35)

Gas pipe

(φ9.52)

Service valve

Heat exchanger

Heat exchanger sensor

Electronic expansion valve

(Liquid)

Strainer Muffler

Capillary tube

Outdoor air temp. sensor

Muffler

Compressor

Accumulator

Discharge pipe temp. sensor

Cooling cycle

Heating cycle

Check joint

4way valve

Service valve

Heat exchanger sensor

(Th2

(TH3)

Room temp. sensor

(Th1)

(Th2

(

Gas

)

(TH2)

Heat exchanger sensor

(TH1)

(EEV)

Capillary tube

Heat exchanger

Model SRK50ZJ-S

Indoor unit

Outdoor unit

Flare connection

Liquid pipe

(φ6.35)

Gas pipie

(φ12.7)

Service valve

Heat exchanger

Heat exchanger sensor

Electronic expansion valve

(Liquid)

Strainer

Receiver

Muffler

Capillary tube

Outdoor air temp. sensor

Muffler

Compressor

Discharge pipe temp. sensor

Cooling cycle

Heating cycle

Check joint

4way valve

Service valve

Heat exchanger sensor

(Th3)

(TH3)

Room temp. sensor

(Th1)

(Th2)

(

Gas

)

(TH2)

Heat exchanger sensor

(TH1)

(EEV)

Capillary tube

Heat exchanger

Models SRR25ZM-S, 35ZM-S

6. PIPING SYSTEM

Air flow (m3/min)

External static pressure (Pa)

4 6 8

Air flow (m3/min)

External static pressure (Pa)

4 6 8

Air flow (m3/min)

External static pressure (Pa)

4 6 8

Air flow (m3/min)

External static pressure (Pa)

4 6

ULo

8 10

Model SRR25ZM-S

Cooling Heating

Model SRR35ZM-S

Cooling Heating

5. CHARACTERISTICS OF FAN

'15 • SR-T-185

RANGE OF USAGE & LIMITATIONS

Indoor return air temperature (Upper, lower limits)

Refrigerant line (one way) length

Power source voltage Rating ±10%

Voltage at starting Min. 85% of rating

Frequency of ON-OFF cycle

Max. 4 times/h

(Inching prevention 10 minutes)

ON and OFF interval Min. 3 minutes

Outdoor air temperature (Upper, lower limits)

Vertical height difference between outdoor unit and indoor unit

Max. 15m

Max. 10m

(Outdoor unit is higher)

Max. 10m

(Outdoor unit is lower)

Item

Model

SRR25ZM-S, 35ZM-S

Cooling operation : Approximately 18 to 32℃ D.B. Heating operation : Approximately 10 to 30℃ D.B. (Refer to the selection chart)

Cooling operation : Approximately -15 to 46℃ D.B. Heating operation : Approximately -15 to 24℃ D.B. (Refer to the selection chart)

Selection chart

Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be obtained in the following way.

Net capacity = Capacity shown on specification ×Correction factors as follows.

(1) Coefficient of cooling and heating capacity in relation to temperatures

0.6

0.7

0.8

0.9

1.0

1.2

1.1

1.3

-5

-10

-15

Outdoor air W.B. temperature °C W.B.

-15 -10 -5 0 5 10 15

Cooling operation

Outdoor air D.B.

temperature

°C D. B.

Coefficient of cooling

heating capacity in

relation to temperature

Heating operation

Indoor air D.B.

temperature

°C D. B.

ISO-T1 Standard Condition

Depends on installed situation

ISO-T1 Standard Condition

2220181614

Indoor air W.B. temperature °C W.B

Applicable range

Cooling

Heating

7. RANGE OF USAGE & LIMITATIONS

'15 • SR-T-185

'09•SRK-DB-087D

(2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

(3) Correction relative to frosting on outdoor heat exchanger during heating

How to obtain the cooling and heating capacity

Piping length [m]

Cooling

Heating

1.0

0.99

1.0

0.975

1.0

0.965

1.0

0.95

1.0

0.935

1.0

Air inlet temperature of

outdoor unit in °C WB

Adjustment coefficient

-15

0.95 0.95 0.94 0.93 0.91 0.88 0.86 0.87 0.92 1.00

-10 -9 -7 -5 -3 -1 1 3

5 or more

ZM-S

'15 • SR-T-185

8. CAPACITY TABLES

2.58 2.53 2.47 2.42 2.36

3.48 3.44 3.40 3.36 3.32

4.30 4.25 4.20 4.15 4.10

35 2.91 2.49 3.10 2.47 3.37 2.66 3.50 2.65 3.58 2.63 3.80 2.76 3.96 2.71

35 2.08 1.97 2.21 1.99 2.41 2.15 2.50 2.15 2.56 2.13 2.71 2.26 2.83 2.22

Hi 22 2.49 2.20 2.63 2.18 2.78 2.30 2.84 2.29 2.90 2.26 3.02 2.37 3.13 2.32

Air flow

Hi 22 3.49 2.78 3.68 2.74 3.89 2.88 3.98 2.85 4.06 2.82 4.23 2.93 4.38 2.85

edoMtingtaeH(kW)

(kW)

Cooling Mode

℃DB

Outdoor air temp.

℃WB

22 ℃WB 24 ℃WB

CHSCTCHSCTCHSCTCHSCTCHSCTCHSCTCHSCT

℃ DB 18℃ DB 20℃ DB 22℃ DB 24℃ DB

10 2.82 2.35 2.95 2.32 3.06 2.42 3.11 2.39 3.16 2.36 3.26 2.45 3.34 2.39

2.09 2.05 2.00 1.96 1.91

12 2.77 2.33 2.90 2.29 3.01 2.40 3.07 2.38 3.12 2.35 3.22 2.44 3.31 2.37

2.37 2.33 2.29 2.24 2.19

14 2.71 2.30 2.85 2.27 2.97 2.39 3.03 2.36 3.08 2.33 3.18 2.43 3.28 2.36

2.56 2.53 2.48 2.45 2.41

16 2.66 2.28 2.80 2.24 2.92 2.36 2.98 2.34 3.04 2.32 3.15 2.42 3.24 2.35

2.69 2.65 2.60 2.57 2.53

18 2.60 2.25 2.74 2.22 2.88 2.35 2.94 2.33 2.99 2.30 3.11 2.40 3.20 2.34

3.42 3.38 3.37 3.3

0 3.25

20 2.55 2.23 2.68 2.20 2.83 2.32 2.89 2.30 2.95 2.28 3.07 2.39 3.17 2.33

(

min

)

3.70 3.66 3.64 3.59 3.55

9.5 24 2.43 2.17 2.57 2.15 2.72 2.28 2.80 2.26 2.85 2.24 2.98 2.36 3.08 2.30

4.02 3.99 3.96 3.92 3.88

(

m3/min

)

26 2.37 2.14 2.51 2.12 2.67 2.26 2.74 2.25 2.80 2.23 2.93 2.34 3.04 2.29

4.32 4.29 4.27 4.22 4.19

28 2.31 2.11 2.44 2.09 2.61 2.24 2.69 2.23 2.75 2.21 2.89 2.33 3.00 2.27 30 2.24 2.08 2.38 2.06 2.56 2.21 2.64 2.20 2.70 2.18 2.84 2.31 2.95 2.26 32 2.18 2.05 2.31 2.04 2.50 2.18 2.58 2.18 2.64 2.16 2.79 2.29 2.90 2.25 34 2.11 2.00 2.25 2.01 2.44 2.16 2.53 2.16 2.59 2.14 2.74 2.27 2.85 2.23

36 2.04 1.94 2.18 1.98 2.38 2.14 2.47 2.14 2.53 2.12 2.69 2.25 2.80 2.22 38 1.97 1.87 2.11 1.95 2.32 2.12 2.41 2.12 2.47 2.10 2.63 2.24 2.75 2.20 39 1.94 1.84 2.07 1.93 2.28 2.11 2.38 2.11 2.44 2.09 2.61 2.23 2.72 2.19

Outdoor

℃DB 23

℃DB

27 ℃DB 28

℃DB

℃DB 33 ℃DB

Outdoor air temp.

air temp.

℃WB

℃WB 20 ℃WB 22 ℃WB 24 ℃WB

Air flow

CHSCTCHSCTCHSCTCHSCTCHSCTCHSCTCHSCT

℃ DB 18℃ DB 20℃ DB 22℃ DB 24℃ DB

10 3.94 3.01 4.13 2.96 4.28 3.06 4.35 3.02 4.43 2.98 4.56 3.05 4.68 2.94 12 3.87 2.97 4.06 2.93 4.22 3.03 4.29 2.99 4.37 2.95 4.51

3.02 4.63 2.93

2.92 2.87 2.83 2.76 2.70

14 3.80 2.94 3.99 2.89 4.16 3.00 4.24 2.97 4.31 2.93 4.46 3.00 4.59 2.92

3.17 3.12 3.06 3.02 2.97

16 3.72 2.90 3.91 2.85 4.09 2.97 4.18 2.94 4.25 2.90 4.40 2.98 4.54 2.90

3.32 3.27 3.21 3.18 3.13

18 3.65 2.86 3.84 2.82 4.03 2.94 4.11 2.91 4.19 2.87 4.35 2.97 4.49 2.89

4.23 4.18 4.16 4.07 4.02

20 3.57 2.82 3.76 2.78 3.96 2.91 4.05 2.88 4.13 2.85 4.29 2.95 4.43 2.87

4.57 4.52 4.49 4.43 4.39

10.0 24 3.40 2.73 3.59 2.70 3.81 2.85 3.91 2.83 3.99 2.80 4.17 2.90 4.32 2.83

4.97 4.93 4.89 4.84 4.79

(

/min

)

26 3.32 2.69 3.51 2.66 3.74 2.81 3.84 2.79 3.92 2.76 4.11 2.88 4.26 2.81

5.34 5.30 5.27 5.21 5.17

28 3.23 2.65 3.42 2.62 3.66 2.77 3.77 2.76 3.85 2.73 4.04 2.85 4.20 2.79 30 3.14 2.60 3.33 2.58 3.58 2.74 3.70 2.73 3.78 2.70 3.98 2.83 4.13 2.76 32 3.05 2.55 3.24 2.53 3.50 2.71 3.62 2.70 3.70 2.68 3.91 2.80 4.06 2.74 34 2.95 2.51 3.14 2.49 3.41 2.67 3.54 2.67 3.62 2.64 3.84 2.78 4.00 2.72

36 2.86 2.47 3.05 2.45 3.33 2.64 3.46 2.64 3.54 2.61 3.76 2.75 3.92 2.70 38 2.76 2.42 2.95 2.40 3.24 2.60 3.38 2.60 3.46 2.58 3.69 2.73 3.85 2.67 39 2.71 2.39 2.90 2.38 3.20 2.58 3.33 2.59 3.42 2.57 3.65 2.71 3.81 2.66

Indoor air temp.

-15

-10

-5

10.0

10 15 20

-15

-10

-5

10.0

10 15 20

Model SRR25ZM-S

Model SRR35ZM-S

Indoor air temp.

(

min

)

edoMtingtaeH

(℃WB)

(℃DB)

Air flow

Outdoor air temp.

(℃DB)

Air flow

Note(1) These data show average statuses.

Depending on the system control, there may be ranges where the operation is not conducted continuously. These data show the case where the operation frequency of a compressor is ﬁxed.

(2) Capacities are based on the following conditions.

Corresponding refrigerant piping length :7m Level difference of Zero.

(3) Symbols are as follows.

TC : Total cooling capacity (kW) SHC : Sensible heat capacity (kW) HC : Heating capacity (kW)

'15 • SR-T-185

R410A REFRIGERANT USED

FOR MODEL SRR SERIES

INSTALLATION MANUAL FOR INDOOR UNIT

RJJ012A002

WARNING

• Installation must be carried out by the qualified installer.

If you install the system by yourself, it may cause serious trouble such as

water leaks, electric shocks, fire and personal injury, as a result of a system malfunction. Do not carry out the installation and maintenance work except the by qualified installer.

• Install the system in full accordance with the installation manual.

Incorrect installation may cause bursts, personal injury, water leaks,

electric shocks and fire.

• Be sure to use only for household and residence.

If this appliance is installed in inferior environment such as machine shop

and etc., it can cause malfunction.

• Use the original accessories and the specified components for installation.

If parts other than those prescribed by us are used, It may cause water

leaks, electric shocks, fire and personal injury.

• Install the unit in a location with good support.

Unsuitable installation locations can cause the unit to fall resulting in

material damage and personal injury.

• Ventilate the working area well in the event of refrigerant leakage during installation.

If the refrigerant comes into contact with naked flames, poisonous gas is

produced.

• When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149).

If the density of refrigerant exceeds the limit, consult the dealer and

install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accident.

• After completing installation, check that no refrigerant leaks from the system.

If refrigerant leaks into the room and comes into contact with an oven or

other hot surface, poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A.

Using existing parts (for R22 or R407C) can cause the unit failure and

serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method.

If the flare nuts were tightened with excess torque, this may cause burst

and refrigerant leakage after a long period.

• The electrical installation must be carried out by the qualified electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.

Power source with insufficient capacity and incorrect function done by

improper work can cause electric shocks and fire.

• Be sure to shut off the power before starting electrical work.

Failure to shut off the power can cause electric shocks, unit failure or

incorrect function of equipment.

• Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work.

Unconformable cables can cause electric leak, anomalous heat

production or fire.

• This appliance must be connected to main power source by means

of a circuit breaker or switch (fuse:16A) with a contact separation of

at least 3mm.

• When plugging this appliance, a plug conforming to the norm IEC60884-1 must be used.

• Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.

Loose connections or cable mountings can cause anomalous heat

production or fire.

• Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.

Incorrect installation may result in overheating and fire.

• Be sure to switch off the power source in the event of installation, inspection or servicing.

If the power source is not shut off, there is a risk of electric shocks, unit

failure or personal injury due to the unexpected start of fan.

• Be sure to wear protective goggles and gloves while at work.

• Earth leakage breaker must be installed.

If the earth leakage breaker is not installed, it can cause electric shocks.

CAUTION

• Use the circuit breaker of correct capacity. Circuit breaker should

be able to disconnect all poles under over current.

Using the incorrect one could cause the system failure and fire.

• Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.

The isolator should be locked in OFF state in accordance with

EN60204-1.

• Be sure to install indoor unit properly according to instruction manual so that drainage can run off smoothly.

Improper installation of indoor unit can cause dropping water into the

room and damaging personal property.

• Install the drainage pipe to run off drainage securely according to the installation manual.

Incorrect installation of the drainage pipe can cause dropping water into

the room and damaging personal property.

• Be sure to install the drainage pipe with descending slope of 1/100 or more, and not to make traps and air-bleedings.

Check if the drainage runs off securely during commissioning and ensure

the space for inspection and maintenance.

• After maintenance, all wiring, wiring ties and the like, should be returned to their original state and wiring route, and the necessary clearance from all metal parts should be secured.

• Secure a space for installation, inspection and maintenance specified in the manual.

Insufficient space can result in accident such as personal injury due to

falling from the installation place.

• Take care when carrying the unit by hand.

If the unit weights more than 20kg, it must be carried by two or more persons. Do not carry by the plastic straps, always use the carry handle

when carrying the unit by hand. Use gloves to minimize the risk of cuts by the aluminum fins.

• Dispose of any packing materials correctly.

Any remaining packing materials can cause personal injury as it contains

nails and wood. And to avoid danger of suffocation, be sure to keep the plastic wrapper away from children and to dispose after tear it up.

• For installation work, be careful not to get injured with the heat exchanger, piping flare portion or screws etc.

• Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.

Insufficient insulation can cause condensation, which can lead to

moisture damage on the ceiling, floor, furniture and any other valuables.

• When perform the air-conditioner operation (cooling or drying operation) in which ventilator is installed in the room. In this case, using the air-conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status. Therefore, set up the opening port such as incorporate the air into the room that may appropriate to ventilation (For example; Open the door a little). In addition, just as above, so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc.

• Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.

If the density of refrigerant exceeds the limit in the event of refrigerant

leakage in the small room, lack of oxygen can occur, which can cause serious accidents.

• Do not install the unit in the locations listed below.

• Locations where carbon fiber, metal powder or any powder is floating.

• Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkaline can occur.

• Vehicles and ships.

• Locations where cosmetic or special sprays are often used.

• Locations with direct exposure of oil mist and steam such as kitchen and

machine plant.

• Locations where any machines which generate high frequency harmonics

are used.

• Locations with salty atmospheres such as coastlines.

• Locations with heavy snow (If installed, be sure to provide base flame and

snow hood mentioned in the manual).

• Locations where the unit is exposed to chimney smoke.

• Locations at high altitude (more than 1000m high).

• Locations with ammonic atmospheres (e.g. organic fertilizer).

• Locations with calcium chloride (e.g. snow melting agent).

• Locations where heat radiation from other heat source can affect the unit.

• Locations without good air circulation.

• Locations with any obstacles which can prevent inlet and outlet air of the unit.

• Locations where short circuit of air can occur (in case of multiple units

installation).

• Locations where strong air blows against the air outlet of outdoor unit.

• Locations where something located above the unit could fall.

It can cause remarkable decrease in performance, corrosion and damage of

components, malfunction and fire.

• Do not install the indoor unit in the locations listed below (Be sure to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).

• Locations with any obstacles which can prevent inlet and outlet air of the

unit.

• Locations where vibration can be amplified due to insufficient strength of

structure.

• Locations where the infrared receiver is exposed to the direct sunlight or

the strong light beam (in case of the infrared specification unit).

• Locations where an equipment affected by high harmonics is placed (TV

set or radio receiver is placed within 1m).

• Locations where drainage cannot run off safely.

It can affect performance or function and etc.

• Do not install the unit near the location where leakage of combustible

gases can occur.

If leaked gases accumulate around the unit, it can cause fire.

• Do not install the unit where corrosive gas (such as sulfurous acid gas etc.) or combustible gas (such as thinner and petroleum gases) can accumulate or collect, or where volatile combustible substances are handled.

Corrosive gas can cause corrosion of heat exchanger, breakage of plastic

parts and etc. And combustible gas can cause fire.

• Do not use the indoor unit at the place where water splashes may occur such as in laundries.

Since the indoor unit is not waterproof, it can cause electric shocks and fire.

• Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics.

Equipment such as inverters, standby generators, medical high frequency

equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any variables which will be damaged by getting wet under the indoor unit.

When the relative humidity is higher than 80% or drainage pipe is clogged,

condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote control at the direct sunlight.

It can cause malfunction or deformation of the remote control.

• Do not use the unit for special purposes such as storing foods, cooling precision instruments and preservation of animals, plants or art.

It can cause the damage of the items.

• Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.

Connecting the circuit with copper wire or other metal thread can cause unit

failure and fire.

• Do not touch any buttons with wet hands.

It can cause electric shocks.

• Do not touch any refrigerant pipes with your hands when the system is in operation.

During operation the refrigerant pipes become extremely hot or extremely

cold depending the operating condition, and it can cause burn injury or frost injury.

• Do not wash the inside of the air-conditioner.

Water leakage and permanent damage may result. Electrical hazard exists.

• Carry out the electrical work for ground lead with care.

Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit

faults such as electric shocks due to short-circuiting.

• Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.

Poisonous gases will flow into the room through drainage pipe and

seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.

• Ensure that no air enters in the refrigerant circuit when the unit is installed and removed.

If air enters in the refrigerant circuit, the pressure in the refrigerant circuit

becomes too high, which can cause burst and personal injury.

• Do not process or splice the power cord, or share the socket with other power plugs.

This may cause fire or electric shock due to defecting contact, defecting

insulation and over-current etc.

• Do not bundle or wind or process the power cord. Do not deform the power cord by treading it.

This may cause fire or heating.

• Do not vent R410A into the atmosphere : R410A is a fluorinated greenhouse gas, covered by the Kyoto Protocol with Groval Warming Potential (GWP)=1975.

• Do not run the unit with removed panels or protections.

Touching rotating equipments, hot surfaces or high voltage parts can

cause personal injury due to entrapment, burn or electric shocks.

• Do not perform any change of protective device itself or its setup condition.

The forced operation by short-circuiting protective device of pressure

switch and temperature controller or the use of non specified component can cause fire or burst.

SAFETY PRECAUTIONS

• Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly follow it during the installation work in order to protect yourself.

• The precautionary items mentioned below are distinguished into two levels,

and . : Wrong installation would cause serious consequences such

as injuries or death.

: Wrong installation might cause serious consequences

depending on circumstances.

Both mention the important items to protect your health and safety so strictly

follow them by any means.

•

Be sure to confirm no anomaly on the equipment by commissioning after completed installation and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owner’s manual.

• Keep the installation manual together with owner ’s manual at a place where

any user can read at any time. Moreover if necessary, ask to hand them to a new user.

• Before starting the installation work, proper precautions (using suitable

protective clothing, groves etc.) should be taken by qualified installer.

• Pay attention not to fall down the tools, etc. when installing the unit at the

high position.

• If unusual noise can be heard during operation, consult the dealer.

• The meanings of “Marks” used here are shown as follows:

Never do it under any circumstances.

Always do it according to the instruction.

CAUTION

WARNING

CAUTION

WARNING

• This installation manual illustrates the method of installing an indoor unit.

• For electrical wiring work, see instructions set out on the backside.

• For outdoor unit installation and refrigerant piping, refer to page24.

• A wired remote control unit is supplied separately as an optional part.

• While installing the unit, be sure to check the selection of installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage etc.) and installation spaces.

9. APPLICATION DATA

(1) Installation of indoor unit

'15 • SR-T-185

Check before installation work

Q’ty

Standard accessories (installation kit)

Accessories for indoor unit

Wireless remote control

Remote control holder

Battery [R03 (AAA, Micro) 1.5V]

Joint (for drain hose)

Washer (for suspension bolt M10)

Flat head machine screw (for remote control signal receiver M3.5x10)

Plate (display)

Clamp (for drain hose) (big:1, small:1)

Wood screws (for remote control holder ø3.5 X 16mm)

• Model name and power source

• Refrigerant piping length

• Piping, wiring and miscellaneous small parts

Band

Pipe cover (big:1, small:1)

1Remote control signal receiver

Installation frame (for remote control signal receiver)

Necessary tools for the installation work

Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench [14.0~62.0N·m (1.4~6.2kgf·m)]

Hole core drill (65mm in diameter)

Wrench key (Hexagon) [4m/m]

10 Flaring tool set (Designed specifically for R410A)

11 Gas leak detector (Designed specifically for R410A)

Gauge for projection adjustment (Used when flare is made by using conventional flare tool)

13 Pipe bender

Q’ty

Option parts (Separately sold parts)

Bottom air inlet kit 25, 35 models : UT-BAT1EF 50, 60 models : UT-BAT2EF

Q’ty

Locally procured parts

Drain hose (VP25)

Suspension bolts (M10)

Nuts (M10)

Spring lock washers (M10)

Sealing plate

Sleeve

Inclination plate

Putty

When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.

Drilling of hole and fixture of sleeve (Locally procured parts)

Top

Sleeve

Thickness of the wall + 1.5cm

Indoor side Outdoor side

ø65

Indoor side Outdoor side

Installed state

Turn to tighten

* Sleeve is for use in refrigerant piping work. Please install another pipe separately for drain piping work.

In case of rear piping draw out, cut off the lower

and the right side portions of the sleeve collar.

Drill a hole with whole core drill.

※Dimensions of the opening on the ceiling after removing inspection opening (1)

Model 25, 35 50, 60

A 750 950

B 770 970

100(80) or more

150(50) or more

270

or more

150(0)

or more

Dedicated inspection opening must be provided.

Inspection opening (1)

Inspection opening (2)

Indoor Unit

Ceiling plate

Air intake direction

E F

unit : mm

1000 or more

unit : mm

Obstacle

1000 or more

Obstacle

Pipe locations

All models

Suspension Bolt Location

Model 25, 35 50, 60

A 790 990

B 457 457

○ Adhere to the measurements given

below for the length of the suspension bolts.

Unit

Suspension bolt (M10)

Under 60 mm

Remove bracket in this direction.

Inspection opening (1)Service Inspection opening (2)

Clamping of the flare of required and gas refrigerant pipe

UseNot Use

Drain pipe connection

UseNot Use

Installation and removal of blower

Not UseUse

Control box

Connecting wire (between indoor and outdoor)

UseNot Use

Unit display section (Remote control signal receiver)

UseNot Use

Replace drain pump

UseNot Use

Replace heat exch sensor

UseNot Use

Replace air filter

Not UseUse

Refrigerant gas pipe

Refrigerant liquid pipe

Drain Pipe connection VP25 (I.D. 25, O.D. 32)

500

413

370

326

380

200

168

105

3030

Gravity drainage

The minimum dimensions when used Bottom air inlet kit (Option parts) are shown in parentheses.

① Wireless remote control

② Remote control holder

⑤ Wood screws

Sleeve

(Locally procured

parts)

③ Remote control

signal receiver

450

○ Remove bracket from the unit after

unpacking according to process as shown below.

(1) Loosen 2 screws. (2) Remove bracket. (3) Tighten the screws.

Sleeve

Inclination plate

Sealing plate

Drain pipe, refrigerant gas pipe and refrigerant liquid pipe

200C

200

Air blowout direction

Air outlet

100

450

Screw

CAUTION

Completely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

putty

Indoor side Outdoor side

Grill (Prepare on site)

SELECTION OF INSTALLATION LOCATION

INSTALLATION OF INDOOR UNIT

Indoor unit

(Install at location that meets the following conditions, after getting approval from the customer)

○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed. ○ A firm location that may sustain the weight of the unit, and do not cause the unit or the ceiling to vibrate. ○ A place where there will be enough space for servicing. (Where space mentioned below can be secured) ○ Where wiring and the piping work will be easy to conduct. ○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting. ○ A place where it can be easily drained. ○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.) ○ Places where this unit is not affected by the high frequency equipment or electric equipment. ○ Avoid installing this unit in place where there is much oil mist. ○ Places where there is no electric equipment or household under the installing unit.

Wireless remote control

Space for installation and service

○ A place where the air-conditioner can be received the signal surely during operating the wireless remote control. ○ Places where there is no affected by the TV and radio etc. ○ Do not place where exposed to direct sunlight or near heat devices such as a stove.

○ Where the suction inlet of the unit is located far from the air inlet on the ceiling, the entire inside of ceiling acts as an

air suction duct so that the capacity is reduced at the startup.

○ Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.

This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humidity condition and confirmed there is no problem. However, there is some risk of condensation drop if the air-conditioner is operated under the severer condition than mentioned above. If there is a possibility to use it under such a condition, attach additional insulation of 10 to 20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe.

Inspection opening for services

install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).