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)

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

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

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

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

24 / 24

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