Electra DUO 9+9 ST User 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 m3/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 m3/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 m3/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 m3/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 7.5m0 0 90 90
ADDITIONAL CHARGE (gr)
7.5m-15m100 190
* For two units operatingsimultaneously.
REFRIGERANT
R410A
Cat.No.4
33
/01
943
100 190
WAF 9 WAF 9
FL
O
9
FLO 9
CAPACITYAND 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
WAF 9
WAF 9
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 7.5m0 0 9080
ADDITIONAL
CHARGE (gr)
7.5m-15m100
* For two units operatingsimultaneously.
REFRIGERANT
R410A
Cat.No.4
33
/01
944
190
180
100
WAF
12
WAF 9 FLO 12
FL
O
9
CAPACITYAND 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 7.5m0 0 9080
ADDITIONAL CHARGE (gr)
7.5m-15m100
* For two units operatingsimultaneously.
REFRIGERANT
R410A
Cat.No.4
33
/01
944
190
180
100
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$/3+$ $/3+$
$0( $0(
:1* :1*
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%WXK:
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D78D;97D3@FD3
CAPACITY AND ADDITIONAL CHARGE
FOR VARIOUS APPLICATIONS
UNIT 1 UNIT 2 UNIT 1 UNIT 2
ALPHA 12 ALPHA 9 WNG 12 WNG 9
AME 30 AME 20 NXE 30 NXE 20
INDOOR
COOLING
CAPACITY*19815 Btu/h, 5810W 20230 Btu/h, 5930W
Up to 7.5m0 0 90 80
ADDITIONAL CHARGE (gr)
7.5m-15m100
* For two units operatingsimultaneously.
REFRIGERANT R410A Cat.No.433946/01
190
100 180
:$) :$) )/2 )/2
$/3+$ $/3+$
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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 32oC DB 23oC WB 46oC DB
Lower limit 21oC DB 15oC WB 21oC DB
Heating Upper limit 27oC 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., (oC)
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
23.74 1.51 3.58 1.61 3.43 1.71
65.27 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
o
C )
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
o
C )
Discharge 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)

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)