Electra DUO 9+9 ST, DUO 9+9 RC, DUO 12+12 ST, DUO 12+12 RC, DUO 9+12 ST Service Manual

Service Manual

DUO Series

REFRIGERANT

R410A

HEAT PUMP

COOLING ONLY

FEBRUARY - 2006

DUO Outdoor Models

DUO OU7 (9+9)

DUO OU7 (9+12)

DUO OU7 (12+12)

A

LIST OF EFFECTIVE PAGES

Revision Y05-02

Service Manual - DUO Series

LIST OF EFFECTIVE PAGES

Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page

(when none indicates no changes in the relevant page). All pages in the following list represent
effected/ non effected pages divided by chapters.

Dates of issue for original and changed pages are:

Original ....... 0 ........March 2005

Total number of pages in this publication is 59 consisting of the following:

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Title ....................... 2

A ........................... 2

i ............................. 1

1-1 ........................ 2

2-1 - 2-9 ................ 2

3-1 ........................ 1

4-1 - 4-2 ................ 2

5-1 - 5-21 .............. 2

6-1 ........................ 2

7-1 ........................ 1

8-1 ........................ 1

9-1 ........................ 1

10-1 ...................... 1

11-1 ....................... 2

12-1 ...................... 2

13-1-13-2 .............. 1

14-1-14-8 .............. 2

Appendix A .............1

• Zero in this column indicates an original page.

*Due to constant improvements please note that the data on this service manual can be modified
with out notice.
**Photos are not contractual

i

TABLE OF CONTENTS

Revision Y05-02Service Manual - DUO Series

Table of Contents

1. INTRODUCTION ...................................................................................................1-1

2. PRODUCT DATA SHEET ......................................................................................2-1

3. RATING CONDITIONS ..........................................................................................3-1

4. OUTLINE DIMENSIONS .......................................................................................4-1

5. PERFORMANCE DATA AND PRESSURE CURVES ..........................................5-1

6. CHARACTERISTICS SOUND LEVEL ..................................................................6-1

7. ELECTRICAL DATA ..............................................................................................7-1

8. WIRING DIAGRAMS .............................................................................................8-1

9. ELECTRICAL CONNECTIONS .............................................................................9-1

10. REFRIGERATION DIAGRAMS .............................................................................10-1

11. TUBING CONNECTIONS ......................................................................................11-1

12. CONTROL SYSTEM .............................................................................................12-1

13. TROUBLESHOOTING ..........................................................................................13-1

14. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................14-1

15. APPENDIX A .........................................................................................................15-1

1-1

INTRODUCTION

Revision Y05-02Series Manual - DUO Series

1. INTRODUCTION

1.1 General

The DUO multi split R410A outdoor unit series, comprise the following ST (cooling only)
and RC (heat pump) models:

• Cooling Only OU7 (9+9) ST, OU7 (9+12) ST, OU7 (12+12) ST

• Heat Pump OU7 (9+9) RC, OU7 (9+12) RC, OU7 (12+12) RC

1.2 Main Features

• R410A refrigerant

• Built in Deicing Controller.

• High COP

• Outdoor coil with hydrophilic louver fins for RC units.

• Metal sheets protected by anti - corrosion paint work allowing long life

resistance.

• Compressor mounted in a soundproofed compartment

• Easy installation and service.

1.3 Tubing Connections

Flare type interconnecting tubing to be produced on site.
For further details please refer to APPENDIX A on this manual, and to the relevant
indoor service Manual,

1.4 Inbox Documentation

Each indoor unit is supplied with its own installation and operation manuals, an
additional instillation guide is provided in the DUO outdoor package.

1.5 Matching Table

OUTDOOR UNITS

INDOOR UNITS

MODEL REFRIGERANT WNG9 WNG12 ALPHA 9 ALPHA 12

DUO 9+9 ST/RC R410A

√√

DUO 9+12 ST/RC R410A

√√√√

DUO 12+12 ST/RC R410A

√√

2-1

PRODUCT DATA SHEET

Revision Y05-02Service Manual - DUO Series

2. PRODUCT DATA SHEET

Model Indoor Unit WNG 9+9
Model Outdoor Unit OU7-0909
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 19520 18315

Capacity

(1)

kW 5.72 5.37

Power Input

(1)

kW 1.78 1.67

COP

(1)

W/W 3.2 3.2
Power Supply V/Ph/Hz 230/1/50+/-10%
Rated Current A 7.7 7.3
Starting Current A 37.4
Circuit Breaker Rating A 16

Fan Type & Quantity Crossflow*1
Airflow

(2)

H/M/L m3/hr 450 380 330
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 44 46 49

Sound Pressure Level

(4)

H/M/L dB (A) 28 31 35
Moisture Removal L/hr 2*0.9
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 810*190*285
Weight kg 11
Package Dimensions W/H/D mm 945*395*655
Units per Pallet Units 32

ROODNI

Stacking Height Units 8
Refrigerant Control Capillary tube
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m

3

/hr 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 72
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 74
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge ST/ RC outdoor gr 750+750 / 730+730

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference

m 7

Operation Control Type LC D REMOTE CONTROL
Heating Elements kW NO
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1 WNG 9+9 / OU7- 0909

18.7 / 18.7

2-2

PRODUCT DATA SHEET

Revision Y05-02 Service Manual - DUO Series

Model Indoor Unit WNG 9+12
Model Outdoor Unit OU7-0912
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 20230 20910

Capacity

(1)

kW 5.93 6.13

Power Input

(1)

kW 2.07 1.97

COP

(1)

W/W 2.86 3.1
Power Supply V/Ph/Hz 230/1/50
Rated Current A 9.1 8.7
Starting Current A 43
Circuit Breaker Rating A 16

Fan Type & Quantity Crossflow*1
Airflow

(2)

H/M/L m3/hr 450+635 380+550 330+450
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 44+49 46+53 49+56

Sound Pressure Level

(4)

H/M/L dB (A) 28+35 31+39 35+43
Moisture Removal L/hr 0.9+1.3
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 810*190*285
Weight kg 11+11.5
Package Dimensions W/H/D mm 945*395*655
Units per Pallet Units 32

ROODNI

Stacking Height Units 8
Refrigerant Control Capillary
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m

3

/hr 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 74
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 76
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge ST/ RC outdoor gr 830+670 / 830+670

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference m 7
Operation Control Type LCD REMOTE CONTROL
Heating Elements kW NO
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1.1 WNG 9+12 / OU7- 0912

18.7 / 24.0

2-3

PRODUCT DATA SHEET

Revision Y05-02Service Manual - DUO Series

Model Indoor Unit Alpha 9+9
Model Outdoor Unit OU7-0909
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 17400 17460

Capacity

(1)

kW 5.1 5.12

Power Input

(1)

kW 1.73 1.74

COP

(1)

W/W 2.95 2.9
Power Supply V/Ph/Hz 230/1/50
Rated Current A 7.6 7.7
Starting Current A 37.4
Circuit Breaker Rating A 16

Fan Type & Quantity Crossflow*1
Airflow

(2)

H/M/L m3/hr 450 350
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 52 47

Sound Pressure Level

(4)

H/M/L dB (A) 40 36
Moisture Removal L/hr 2*0.9
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 680*250*180
Weight kg 7
Package Dimensions W/H/D mm 770*325*265
Units per Pallet Units 36

ROODNI

Stacking Height Units 9
Refrigerant Control Capillary tube
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m

3

/hr 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 72
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 74
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge ST/ RC outdoor gr 750+750 / 730+730

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference

m 7

Operation Control Type LC D REMOTE CONTROL
Heating Elements kW NO
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1.2 ALPHA 9+9 / OU7- 0909

360

49
3541

740*310*250

18.7 / 18.7

2-4

PRODUCT DATA SHEET

Revision Y05-02 Service Manual - DUO Series

Model Indoor Unit ALPHA 9+12
Model Outdoor Unit OU7-0912
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 19815 21020

Capacity

(1)

kW 5.81 6.16

Power Input

(1)

kW 2.06 2.09

COP

(1)

W/W 2.82 2.93
Power Supply V/Ph/Hz 230/1/50+/-10%
Rated Current A 9 9.2
Starting Current A 43
Circuit Breaker Rating A 16

Fan Type & Quantity Crossflow *1
Airflow

(2)

H/M/L m3/hr 600+450 450+350
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 54+52 47+47

Sound Pressure Level

(4)

H/M/L dB (A) 42+40 36+36
Moisture Removal L/hr 0.9+1.3
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 680*250*180/840*250*180
Weight kg 7+8
Package Dimensions W/H/D mm 930*325*265/770*325*265
Units per Pallet Units 36

ROODNI

Stacking Height Units 9
Refrigerant Control Capillary
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m

3

/hr 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 74
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 76
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge ST/ RC outdoor gr 830+670 / 830+670

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference m 7
Operation Control Type LCD REMOTE CONTROL
Heating Elements kW NO
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1.3 ALPHA 9+12 / OU7- 0912

900*310*250/740*310*250

460+360620+450

620+450

53+53
40+41 33+35

47+49

18.7 / 24.0

2-5

PRODUCT DATA SHEET

Revision Y05-02Service Manual - DUO Series

Model Indoor Unit WNG 12*12
Model Outdoor Unit OU7-1212
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 23884 25000

Capacity

(1)

kW 7 7.35

Power Input

(1)

kW 2.5 2.3

COP

(1)

W/W 2.8 3.2
Energy Efficiency Class
Power Supply V/Ph/Hz 230/1/50+/-10%
Rated Current A
Starting Current A 48
Circuit Breaker Rating A

Fan Type & Quantity Crossflow*1
Fan Speed H/M/L RPM
Airflow

(2)

H/M/L m3/hr 635+635 550+550 450+450
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 56+56 53+53 49+49

Sound Pressure Level

(4)

H/M/L dB (A) 43+43 39+39 35+35
Moisture Removal L/hr 1.3+1.3
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 810*190*285
Weight kg 11.5+11.5
Package Dimensions W/H/D mm 945*395*655
Packaged Weight kg N/A
Units per Pallet Units 32

ROODNI

Stacking Height Units 8
Refrigerant Control Capillary
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m3/hr 3100 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 74
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 76
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge GR 880+880

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference m 7
Operation Control Type LCD REMOTE CONTROL
Heating Elements kW
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1.4 WNG 12+12 / OU7-1212

3

16

24 / 24

2-6

PRODUCT DATA SHEET

Revision Y05-02 Service Manual - DUO Series

Model Indoor Unit ALPHA 12*12
Model Outdoor Unit OU7-1212
Installation Method Wall Mounted

Characteristics Units Cooling Heating

Btu/hr 23884 25000

Capacity

(1)

kW 7 7.35

Power Input

(1)

kW 2.5 2.50

COP

(1)

W/W 2.8 2.94
Energy Efficiency Class
Power Supply V/Ph/Hz 230/1/50+/-10%
Rated Current A
Starting Current A 48
Circuit Breaker Rating A

Fan Type & Quantity Crossflow*1
Fan Speed H/M/L RPM
Airflow

(2)

H/M/L m3/hr 600+600 450+450
External Static Pressure Min-Max Pa N/A
Sound Power Level

(3)

H/M/L dB (A) 54+54 47+47

Sound Pressure Level

(4)

H/M/L dB (A) 42+42 36+36
Moisture Removal L/hr 1.3+1.3
Condensate Drain Tube I.D. mm 16
Dimensions W/H/D mm 840*250*180
Weight kg 8+8
Package Dimensions W/H/D mm 930*325*265
Packaged Weight kg N/A
Units per Pallet Units 36

ROODNI

Stacking Height Units 9
Refrigerant Control Capillary
Compressor Type, Model Rotary
Fan Type & Quantity Axial*1
Fan Speeds H/L RPM 850
Airflow H/L m3/hr 3100 3100
Sound Power Level H/L dB (A) 66.8
Sound Pressure Level

(4)

H/L dB (A) 59
Dimensions W/H/D mm 900*680*340
Weight kg 74
Package Dimensions W/H/D mm 985*730*406
Packaged Weight kg 76
Units per Pallet Units 6
Stacking Height Units 2
Refrigerant Type R410A
Refrigerant Charge GR 880+880

Liquid Line In 2*6.35(1/4")
Suction Line In 2*9.53(3/8")
Max. Tubing Length m 15

ROODTUO

Connections
Between Units

Max. Height Difference m 7
Operation Control Type LCD REMOTE CONTROL
Heating Elements kW
Others

1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.

2.1.5 ALPHA 12+12 / OU7-1212

3

3

16

24 / 24

2-7

PRODUCT DATA SHEET

Revision Y05-02Service Manual - DUO Series

2.2 Capacity & Additional Charge Table

2.2.1 DUO 9+9 RC Additional Refrigerant Charge Lable (as show on unit).

2.2.2 DUO 9+9 ST Additional Refrigerant Charge Lable (as show on unit).

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 9 ALPHA 9 WNG 9 WNG 9

AME 20 AME 20 NXE 20 NXE 20

INDOOR

COOLING
CAPACITY*

17400 Btu/h, 5100W 19520 Btu/h, 5720W

HEATING
CAPACITY*

17460 Btu/h, 5120W 18315 Btu/h, 5370W

Up to 7.5m

0 0 90 90

ADDITIONAL

CHARGE (gr)

7.5m-15m

100 190

* For two units operating simultaneously.

100

190

WAF 9

WAF 9

FLO

9

FLO 9

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 9 ALPHA 9 WNG 9 WNG 9

AME 20 AME 20 NXE 20 NXE 20

INDOOR

COOLING
CAPACITY*

17400 Btu/h, 5100W 19520 Btu/h, 5720W

ADDITIONAL

CHARGE (gr)

7.5m-15m

* For two units operating simultaneously.

REFRIGERANT R410A Cat.No.433945/01

100100

100

100

FLO 9

FLO 9

2-8

PRODUCT DATA SHEET

Revision Y05-02 Service Manual - DUO Series

2.2.3 DUO 9+12 RC Additional Refrigerant Charge Lable (as show on unit).

2.2.4 DUO 9+12 ST Additional Refrigerant Charge Lable (as show on unit).

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 12 ALPHA 9 WNG 12 WNG 9

AME 30 AME 20 NXE 30 NXE 20

INDOOR

COOLING
CAPACITY*

19815 Btu/h, 5810W 20230 Btu/h, 5930W

HEATING
CAPACITY*

21020 Btu/h, 6160W 20910 Btu/h, 6130W

Up to 7.5m

0 0 90 80

ADDITIONAL

CHARGE (gr)

7.5m-15m

100

* For two units operating simultaneously.

190

180

100

WAF

12

WAF 9 FLO 12

FLO

9

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 12 ALPHA 9 WNG 12 WNG 9

AME 30 AME 20 NXE 30 NXE 20

INDOOR

COOLING
CAPACITY*

19815 Btu/h, 5810W 20230 Btu/h, 5930W

Up to 7.5m

0 0 90 80

ADDITIONAL

CHARGE (gr)

7.5m-15m

100

* For two units operating simultaneously.

REFRIGERANT R410A Cat.No.433946/01

190

100

180

WAF

12

WAF 9

FLO 12

FLO 9

2-9

PRODUCT DATA SHEET

Revision Y05-02Service Manual - DUO Series

2.2.5 DUO 12+12 RC Additional Refrigerant Charge Lable (as show on unit).

2.2.6 DUO 12+12 ST Additional Refrigerant Charge Lable (as show on unit).

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 12 ALPHA 9 WNG 12 WNG 9

AME 30 AME 20 NXE 30 NXE 20

INDOOR

COOLING
CAPACITY*

19815 Btu/h, 5810W 20230 Btu/h, 5930W

HEATING
CAPACITY*

21020 Btu/h, 6160W 20910 Btu/h, 6130W

Up to 7.5m

0 0 90 80

ADDITIONAL

CHARGE (gr)

7.5m-15m

100

* For two units operating simultaneously.

190

180

100

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D78D;97D3@FD3

CAPACITY AND ADDITIONAL CHARGE

FOR VARIOUS APPLICATIONS

UNIT 1 UNIT 2 UNIT 1 UNIT 2

ALPHA 12 ALPHA 9 WNG 12 WNG 9

AME 30 AME 20 NXE 30 NXE 20

INDOOR

COOLING
CAPACITY*

19815 Btu/h, 5810W 20230 Btu/h, 5930W

Up to 7.5m

0 0 90 80

ADDITIONAL

CHARGE (gr)

7.5m-15m

100

* For two units operating simultaneously.

REFRIGERANT R410A Cat.No.433946/01

190

100

180

:$)

:$)

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D78D;97D3@FD3

3-1

RATING CONDITIONS

Revision Y05-02Service Manual - DUO Series

3. RATING CONDITIONS

Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.

Cooling:
Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB

Heating:
Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB

3.1 Operating Limits

Indoor Outdoor

Cooling

Upper limit 32

o

C DB 23oC WB 46oC DB

Lower limit 21

o

C DB 15oC WB 21oC DB

Heating

Upper limit 27

o

C DB 24oC DB 18oC WB

Lower limit 20oC DB -9oC DB -10oC WB

Voltage

1PH 198 – 264 V
3PH 360 – 440 V

4-1

OUTLINE DIMENSIONS

Revision Y05-02Service Manual - DUO Series

4. OUTLINE DIMENSIONS

4.1 Indoor Unit: Alpha 9

4.2

Indoor Unit: Alpha 12

4-2

OUTLINE DIMENSIONS

Revision Y05-02 Service Manual - DUO Series

4.3 Indoor Unit: WNG 9, 12

4.2

Outdoor Unit: DUO OU7- (09+09), (09+12), (12+12)

143

83

5-1

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-02Service Manual - DUO Series

5. PERFORMANCE DATA

5.1 DUO ALPHA (9+9):Room A + Room B

5.1.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

15/21 17/24 19/27 21/29 23/32

15

(1)

TC

5.38 5.57 5.70 5.83 5.92

SC

3.65 3.81 3.96 4.06 4.13

PI

1.23 1.23 1.23 1.23 1.24

20

(1)

TC

5.20 5.48 5.65 5.79 5.91

SC

3.58 3.77 3.93 4.05 4.12

PI

1.33 1.34 1.34 1.35 1.35

25

TC

4.92 5.31 5.59 5.75 5.90

SC

3.49 3.70 3.90 4.02 4.09

PI

1.44 1.45 1.46 1.47 1.48

30

TC

4.60 5.01 5.41 5.61 5.77

SC

3.38 3.59 3.82 3.93 4.00

PI

1.55 1.58

1.59

1.60 1.62

35

TC

4.26 4.62

5.10

5.36 5.61

SC

3.21 3.44 3.73 3.84 3.91

PI

1.67 1.70

1.73

1.74 1.75

40

TC

3.87 4.22

4.60

5.03 5.29

SC

3.03 3.26 3.53 3.64 3.72

PI

1.81 1.83 1.87 1.89 1.91

46

TC

3.36 3.68 4.04 4.47 4.81

SC

2.79 2.99 3.22 3.33 3.40

PI

1.97 2.00 2.05 2.08 2.10

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor

5-2

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-02 Service Manual - DUO Series

5.1.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10 2.69 1.39 2.59 1.48 2.48 1.56

-7 2.89 1.43 2.79 1.51 2.69 1.59

-2 3.07 1.44 2.97 1.53 2.87 1.62
2 3.74 1.51

3.58 1.61

3.43 1.71

6 5.27 1.63 5.12 1.74 4.94 1.85

10 5.73 1.72

5.58 1.84

5.43 1.96

15 6.20 1.79 6.04 1.93 5.89 2.05
20 6.53 1.84 6.37 2.00 6.20 2.16

* the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor

5-3

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-02Service Manual - DUO Series

5.2 Pressure Curves.

5.2.1 ALPHA 9

5.2.2 Cooling.

Suction Pressure VS.Outdoor Temp

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

21/15(DB/WB ºC)
24/17(DB/WB ºC)
27/19(DB/WB ºC)
29/21(DB/WB ºC)
32/23(DB/WB ºC)

Discharge Pressure VS.Outdoor Temp

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

21/15(DB/W B ºC)
24/17(DB/WB ºC)
27/19(DB/WB ºC)
29/21(DB/WB ºC)
32/23(DB/WB ºC)

5-4

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-02 Service Manual - DUO Series

5.2.3 Heating.

Suction Pressure VS.Outdoor Temp

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)
20 DB (ºC)
25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)
20 DB (ºC)
15 DB (ºC)