Electra Alpha 7, Alpha 12, CON 7, GCN 9, Alpha 9 Service Manual

Service Manual

Alpha Series

REFRIGERANT

R410A

COOLING ONLY
HEAT PUMP

JANUARY 2005

Indoor Units Outdoor Units

Alpha 7 CON 7 (Alpha)
Alpha 9 GCN 9 (Alpha)

Alpha 12 GCN 12 (Alpha)

A

LIST OF EFFECTIVE PAGES

Revision Y05-01

Service Manual - ALPHA

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 ........ 15 December 2004

Total number of pages in this publication is 93 consisting of the following:

Page
No.

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No. #

Page
No.

Revision
No. #

Page
No.

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No. #

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4-1 - 4-3 ................ 0

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13-1-13-2 .............. 0

14-1-14-23 ............ 0

Appendix -A ...........0

• 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 Y05-01Service Manual - ALPHA

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 & PRESSURE CURVES ................................................5-1

6. SOUND LEVEL CHARACTERISTICS ..................................................................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 Y05-01Service Manual - ALPHA

1. INTRODUCTION

1.1 General

The new Alpha split wall mounted is based on the compact range. It comprise the ST
(cooling only) and RC (heat pump) models, as follows:

• Cooling Only Alpha 7 ST/CON 7 ST; Alpha 9 ST/GCN 9 ST;

Alpha 12 ST/GCN 12 ST;

• Heat Pump Alpha 7 RC/CON 7 RC; Alpha 9 RC/GCN 9 RC;

Alpha 12 RC/GCN 12 RC;

The indoor Alpha units are available as LED display types, featuring esthetic design,

compact dimensions, and low noise operation.

1.2 Main Features

The Alpha series benefits from the most advanced technological innovations, namely:

• R410A models

• Microprocessor control.

• Infrared remote control with liquid crystal display.

• Indoor large diameter cross flow fan, allowing low noise level operation.

• Bended indoor coil with treated aluminum fins and coating for improved

efficiency.

• High COP.

• Easy access to the interconnecting tubing and wiring connections, so that

removing the front grill or casing is not necessary.

• Refrigerant pipes can be connected to the indoor unit from 5 different optional

directions.

• Automatic treated air sweep.

• Easy installation and service.

• 4M length tubing connection kit is provided in the outdoor unit.

1-2

INTRODUCTION

Revision Y05-01 Service Manual - ALPHA

1.3 Indoor Unit

The indoor unit is wall mounted, and can be easily fitted to many types of residential
and commercials applications.

It includes:

• Casing with air inlet and outlet grills.

• A large-diameter tangential fan.

• Bended coil with treated aluminum fins.

• Motorized flaps

• Multi-speed motor with internal protection

• Advanced electronic control box assembly

• Interconnecting wiring terminal block

• Mounting plate

1.4 Filtration

The Alpha series presents several types of air filters:

• Easily accessible, and re-usable pre-filters (mesh)

• Pre-charged electrostatic filter (optional)

• Active carbon filter (optional)

1.5 Control

The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.

1.6 Outdoor Unit

The Alpha outdoor units can be installed as floor or wall mounted units by using a
wall supporting bracket. The metal sheets are protected by anti- corrosion paint work
allowing long life resistance. All outdoor units are pre-charged. For further information
please refer to the Product Data Sheet, Chapter 2.

It includes :

• A Rotary compressor mounted in a soundproofed compartment :

• Axial fan.

• Outdoor coil with hydrophilic louver fins for RC units.

• Outlet air fan grill.

• Service valves” flare” type connection.

• Interconnecting wiring terminal block.

1-3

INTRODUCTION

Revision Y05-01Service Manual - ALPHA

1.7 Tubing Connections

Flare type interconnecting tubing can be produced on site.
A connection pipe kit is provided in outdoor package.
For further details please refer to the Installation Manual, Appendix A.

1.8 Accessories

ASK (All Season Kit):

For low ambient working conditions in cooling, an ASK can be installed inside the
outdoor unit. This kit allows cooling operation down to outdoor temp of -10 ºC by
gradually controlling the outdoor fan speed motor.

1.9 Inbox Documentation

Each unit is supplied with its own installation and operation manuals,one simply remote
control manual

1.10 Matching Table

1.10.1 R410A

OUTDOOR UNITS

INDOOR UNITS

MODEL REFRIGER. Alpha 7 Alpha 9 Alpha 12

CON 7 (Alpha) R410A √

GCN 9 (Alpha) R410A √

GCN 12 (Alpha) R410A √

2-1

PRODUCT DATA SHEET

Revision Y05-01Service Manual - ALPHA

2. PRODUCT DATA SHEET

2.1 R410A

Model Indoor Unit Alpha 7
Model Outdoor Unit CON 7 (Alpha)
Installation Method of Pipe Flared

Characteristics Units Cooling Only Cooling Heating

Capacity

(1)

Btu/hr 7000 7000 7300

kW 2.05 2.05 2.15

Power input

(1)

kW 0.68 0.68 0.63

EER (Cooling) or COP(Heating)

(1)

W/W 3.01 3.01 3.41

Energy efficiency class

B

BB
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 3.0 3.0 2.8
Starting current A 15
Circuit breaker rating A 10

INDOOR

Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1150/950
Air flow

(2)

H/M/L m3/hr 390/320
External static pressure Min-Max Pa 0
Sound power level

(3)

H/M/L dB(A) 50/44
Sound pressure level

(4)

H/M/L dB(A) 37/32
Moisture removal l/hr 0.8
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 680*250*180
Weight kg 7
Package dimensions WxHxD mm 740*250*310
Packaged weight kg 9.5
Units per pallet units 36
Stacking height units 9 levels

OUTDOOR

Refrigerant control Capillary tube
Compressor type, model Rotary,TOSHIBA,PA82X1C-4DZDE
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 850
Air flow H/L m3/hr 1200
Sound power level H/L dB(A) 61 62
Sound pressure level

(4)

H/L dB(A) 52 53
Dimensions WxHxD mm 610*235*490
Weight kg 27 27.5
Package dimensions WxHxD mm 720*550*360
Packaged weight kg 30/33.5(with kit) 30.5/34(with kit)
Units per pallet Units 12
Stacking height units 4 levels
Refrigerant type R410A
Refrigerant chargless distance Kg/m 0.72kg/7.5m
Additional charge kg 4m≤length≤10m,0.72kg; 10m<length≤15m,0.8kg

Connections between

units

Liquid line In.(mm) Ф 1/4”(6.35)
Suction line In.(mm) Ф 3/8”(9.53)
Max.tubing length m. Max.15

Max.height
difference

m. Max.7

Operation control type Remote control
Heating elements kW
Others

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

2-2

PRODUCT DATA SHEET

Revision Y05-01 Service Manual - ALPHA

Model Indoor Unit Alpha 9
Model Outdoor Unit GCN 9 (Alpha)
Installation Method of Pipe Flared

Characteristics Units Cooling Only Cooling Heating

Capacity

(1)

Btu/hr

9000 9000 9650

kW

2.64 2.64 2.83

Power input

(1)

kW

0.87 0.87 0.93

EER (Cooling) or COP(Heating)

(1)

W/W

3.03 3.03 3.04

Energy efficiency class

B

BD

Power supply V/Ph/Hz 230V/Single/50Hz

Rated current A 3.9 3.9 4.1

Starting current A 21.7

Circuit breaker rating A 10

INDOOR

Fan type & quantity Crossflow x 1

Fan speeds H/M/L RPM 1310/1100

Air flow

(2)

H/M/L m3/hr 450/360

External static pressure Min-Max Pa 0

Sound power level

(3)

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

Sound pressure level

(4)

H/M/L dB(A) 41/35

Moisture removal l/hr 1.2

Condenstate drain tube I.D mm 16

Dimensions WxHxD mm 680*250*180

Weight kg 7

Package dimensions WxHxD mm 740*250*310

Packaged weight kg 9.5

Units per pallet units 36

Stacking height units 9 levels

OUTDOOR

Refrigerant control Capillary tube

Compressor type,model

Rotary,TOSHIBA,PA108X1C-4FZDE

Fan type & quantity Propeller(direct) x 1

Fan speeds H/L RPM 750

Air flow H/L m3/hr 1370

Sound power level H/L dB(A) 59 61

Sound pressure level

(4)

H/L dB(A) 49 51

Dimensions WxHxD mm

830x245x545

Weight kg 32.5 33.5

Package dimensions WxHxD mm 880x320x610

Packaged weight kg 35/38.5(with kit) 36/39.5(with kit)

Units per pallet Units 9

Stacking height units 3levels

Refrigerant type R410A

Refrigerant chargless distance kg/m 0.85kg/7.5m 0.9kg/7.5m

Additional charge kg

4m≤length≤10m,0.85kg

10m<length≤15m,0.93kg

4m≤length≤10m,0.9kg

10m<length≤15m,0.98kg

Connections between

units

Liquid line In.(mm) Ф 1/4”(6.35)

Suction line In.(mm) Ф 3/8”(9.53)

Max.tubing length m. Max.15
Max.height
difference

m. Max.7

Operation control type Remote control

Heating elements kW

Others

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

2-3

PRODUCT DATA SHEET

Revision Y05-01Service Manual - ALPHA

Model Indoor Unit Alpha 12
Model Outdoor Unit GCN 12 (Alpha)

Installation Method of Pipe Flared

Characteristics Units Cooling Only Cooling Heating

Capacity

(1)

Btu/hr

12000 12000 12900

kW

3.50 3.50 3.78

Power input

(1)

kW

1.16 1.16 1.17

EER (Cooling) or COP(Heating)

(1)

W/W

3.02 3.02 3.23

Energy efficiency class

B

BC

Power supply V/Ph/Hz 230V/Single/50Hz

Rated current A 5.2 5.2 5.2

Starting current A 31.5

Circuit breaker rating A 10

INDOOR

Fan type & quantity Crossflow x 1

Fan speeds H/M/L RPM 1210/950

Air flow

(2)

H/M/L m3/hr 620/460

External static pressure Min-Max Pa 0

Sound power level

(3)

H/M/L dB(A) 53/47

Sound pressure level

(4)

H/M/L dB(A) 40/33

Moisture removal l/hr 1.5

Condenstate drain tube I.D mm 16

Dimensions WxHxD mm 840*250*180

Weight kg 8

Package dimensions WxHxD mm 900*250*310

Packaged weight kg 11

Units per pallet units 36

Stacking height units 9 levels

OUTDOOR

Refrigerant control Capillary tube

Compressor type,model Rotary,TOSHIBA,PA145X2C-4FT

Fan type & quantity Propeller(direct) x 1

Fan speeds H/L RPM 830

Air flow H/L m3/hr 1450

Sound power level H/L dB(A) 65 65

Sound pressure level

(4)

H/L dB(A) 54 54

Dimensions WxHxD mm 830x245x545

Weight kg 37 38

Package dimensions WxHxD mm 880x320x610

Packaged weight kg 39.5/43(with kit) 40.5/44(with kit)

Units per pallet Units 9

Stacking height units 3 levels

Refrigerant type R410A

Refrigerant chargless distance kg/m 0.89kg/7.5m

Additional charge per 1 meter g/m

4m≤length≤10m,0.89kg

10m<length≤15m,0.97kg

Connections between

units

Liquid line In.(mm) Ф1/4”(6.35)

Suction line In.(mm) ø3/8”(9.53)

Max.tubing length m. Max.15
Max.height
difference

m. Max.7

Operation control type Remote control

Heating elements kW

Others

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

3-1

RATING CONDITIONS

Revision Y05-01Service Manual - ALPHA

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

3.1.1 R410A

Indoor Outdoor

Cooling

Upper limit 32

o

C DB 23oC WB 46oC DB

Lower limit 21oC DB 15oC WB 10oC DB

Heating

Upper limit 27

o

C DB 24oC DB 18oC WB

Lower limit 10

o

C DB -9oC DB -10oC WB

Voltage 198 – 264 V

4-1

OUTLINE DIMENSIONS

Revision Y05-01Service Manual - ALPHA

4. OUTLINE DIMENSIONS

4.1 Indoor Unit Apha 7, 9

4.2

Indoor Unit Alpha 12

4-2

OUTLINE DIMENSIONS

Revision Y05-01 Service Manual - ALPHA

4.3 Indoor Unit Alpha 17

4.4 Outdoor Unit CON 7 (Alpha)

4-3

OUTLINE DIMENSIONS

Revision Y05-01Service Manual - ALPHA

4.5 Outdoor Unit GCN 12 (Alpha)

AI R OUTL ET

AI R I NTAKE

5-1

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5. PERFORMANCE DATA & PRESSURE CURVES

5.1 Alpha7/CON7

5.1.1 Cooling Capacity (kW)

ENTERING AIR
DB OD Coil(

o

C)

Data

ENTERING AIR WB/DB ID Coil(

o

C)

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

15

(1)

TC

2.09 2.21 2.32 2.42 2.50

SC 1.47 1.56 1.64 1.60 1.63

PI

0.48 0.48 0.48 0.49 0.49

20

(1)

TC

2.07 2.19 2.30 2.40 2.48

SC 1.48 1.57 1.66 1.61 1.64

PI

0.52 0.52 0.53 0.53 0.53

25

TC

1.99 2.13 2.26 2.36 2.44

SC 1.43 1.53 1.62 1.59 1.63

PI

0.56 0.57 0.57 0.58 0.58

30

TC

1.87 2.01 2.17 2.26 2.34

SC 1.36 1.47 1.58 1.55 1.61

PI

0.61 0.62

0.62

0.63 0.63

35

TC

1.72 1.87

2.05

2.15 2.23

SC 1.28 1.39 1.52 1.50 1.56

PI

0.66 0.67

0.68

0.69 0.69

40

TC

1.56 1.70

1.89

1.99 2.07

SC 1.19 1.31 1.44 1.42 1.48

PI

0.71 0.72 0.73 0.74 0.75

46

TC

1.35 1.50 1.68 1.78 1.87

SC 1.08 1.20 1.35 1.32 1.39

PI

0.78 0.79 0.81 0.82 0.82

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, an A.S.K Kit is required.

5-2

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.1.2 Heating

ENTERING AIR DB ID COIL(Oc)

15 20 25

ENTERING

WB OD

COIL(

o

C)

TH Pl TH Pl TH Pl

-10 1.13 0.50 1.09 0.54 1.04 0.56

-7 1.21 0.52 1.17 0.54 1.13 0.57

-2 1.29 0.52 1.25 0.55 1.20 0.59

2 1.57 0.55

1.51 0.58

1.44 0.62

6 2.21 0.59 2.15 0.63 2.07 0.67

10 2.41 0.62

2.34 0.66

2.28 0.71

15 2.60 0.65 2.54 0.70 2.47 0.74

20 2.74 0.67 2.68 0.72 2.60 0.78

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

5-3

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5.2 Model: Alpha7/CON7

5.2.1 Cooling

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

38

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

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

Suction Pressure VS.Outdoor Temp

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

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

5-4

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.2.2 Heating

Discharge Pressure VS.Outdoor Temp

18

20

22

24

26

28

30

32

34

36

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

Suction Pressure VS.Outdoor Temp

4.0

5.0

6.0

7.0

8.0

9.0

10.0

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)

20 DB (ºC)

25 DB (ºC)

5-5

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5.3 Alpha9/GCN9

5.3.1 Cooling Capacity (kW)

ENTERING AIR
DB OD Coil(

o

C)

Data

ENTERING AIR WB/DB ID Coil(

o

C)

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

15

(1)

TC

2.69 2.85 2.98 3.12 3.22

SC 1.76 1.87 1.97 1.92 1.95

PI

0.62 0.62 0.62 0.62 0.62

20

(1)

TC

2.67 2.82 2.96 3.09 3.19

SC 1.90 2.02 2.13 2.07 2.12

PI

0.67 0.67 0.67 0.68 0.68

25

TC

2.56 2.75 2.90 3.04 3.14

SC 1.71 1.83 1.94 1.90 1.95

PI

0.72 0.73 0.73 0.74 0.74

30

TC

2.40 2.59 2.80 2.90 3.01

SC 1.63 1.76 1.90 1.86 1.93

PI

0.78 0.79

0.80

0.81 0.81

35

TC

2.22 2.40

2.64

2.77 2.88

SC 1.53 1.67 1.82 1.80 1.87

PI

0.84 0.86

0.87

0.88 0.88

40

TC

2.01 2.19

2.43

2.56 2.67

SC 1.42 1.57 1.72 1.69 1.78

PI

0.91 0.92 0.94 0.95 0.96

46

TC

1.74 1.93 2.16 2.30 2.40

SC 1.29 1.43 1.61 1.58 1.66

PI

1.00 1.01 1.03 1.04 1.05

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
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, an A.S.K Kit is required.

5-6

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.3.2 Heating

ENTERING AIR DB ID COIL(Oc)

15 20 25

ENTERING

WB OD

COIL(

o

C)

TH Pl TH Pl TH Pl

-10 1.49 0.74 1.43 0.79 1.37 0.83

-7 1.60 0.76 1.54 0.80 1.49 0.85

-2 1.70 0.77 1.64 0.82 1.58 0.86

2 2.07 0.81

1.98 0.86

1.90 0.91

6 2.91 0.87 2.83 0.93 2.73 0.99

10 3.17 0.92

3.08 0.98

3.00 1.05

15 3.42 0.96 3.34 1.03 3.25 1.10

20 3.61 0.99 3.52 1.07 3.42 1.15

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)
DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

5-7

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5.4 Model: Alpha9/GCN9

5.4.1 Cooling

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

38

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

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

Suction Pressure VS.Outdoor Temp

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

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

5-8

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.4.2 Heating

Discharge Pressure VS.Outdoor Temp

20

22

24

26

28

30

32

34

36

38

40

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

Suction Pressure VS.Outdoor Temp

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)

5-9

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5.5 Alpha12/GCN12

5.5.1 Cooling Capacity (kW)

ENTERING AIR
DB OD Coil(

o

C)

Data

ENTERING AIR WB/DB ID Coil(

o

C)

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

15

(1)

TC

3.57 3.78 3.96 4.13 4.27

SC 2.39 2.53 2.67 2.61 2.65

PI

0.82 0.82 0.83 0.83 0.83

20

(1)

TC

3.54 3.75 3.92 4.10 4.24

SC 2.52 2.68 2.83 2.75 2.81

PI

0.89 0.89 0.90 0.90 0.91

25

TC

3.40 3.64 3.85 4.03 4.17

SC 2.32 2.49 2.63 2.58 2.65

PI

0.96 0.97 0.98 0.98 0.99

30

TC

3.19 3.43 3.71 3.85 3.99

SC 2.21 2.38 2.57 2.52 2.62

PI

1.04 1.05

1.07

1.07 1.08

35

TC

2.94 3.19

3.50

3.68 3.82

SC 2.08 2.26 2.47 2.44 2.54

PI

1.12 1.14

1.16

1.17 1.17

40

TC

2.66 2.91

3.22

3.40 3.54

SC 1.93 2.12 2.34 2.30 2.41

PI

1.21 1.23 1.25 1.26 1.27

46

TC

2.31 2.56 2.87 3.05 3.19

SC 1.75 1.95 2.19 2.15 2.25

PI

1.33 1.35 1.37 1.39 1.41

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, an A.S.K Kit is required

5-10

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.5.2 Heating

ENTERING AIR DB ID COIL(Oc)

15 20 25

ENTERING

WB OD

COIL(

o

C)

TH Pl TH Pl TH Pl

-10 1.98 0.94 1.91 1.00 1.83 1.05

-7 2.14 0.96 2.06 1.01 1.98 1.07

-2 2.27 0.97 2.19 1.03 2.12 1.09

2 2.76 1.02

2.65 1.08

2.53 1.15

6 3.89 1.09 3.78 1.17 3.65 1.24

10 4.23 1.15

4.12 1.23

4.01 1.32

15 4.57 1.21 4.46 1.30 4.35 1.38

20 4.82 1.24 4.71 1.35 4.57 1.45

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

5.6 Capacity Correction Factor Due to Tubing Length

5.6.1 Cooling

TOTAL TUBING LENGTH (One Way)

Model

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

Alpha7,9,12

1.02

1

0.97 0.95 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5.6.2 Heating

TOTAL TUBING LENGTH(One Way)

Model

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

Alpha7,9,12

1.03

1

0.98 0.96 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5-11

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01Service Manual - ALPHA

5.7 Model: Alpha12/GCN12

5.7.1 Cooling

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

38

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

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

Suction Pressure VS.Outdoor Temp

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

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

5-12

PERFORMANCE DATA & PRESSURE CURVES

Revision Y05-01 Service Manual - ALPHA

5.7.2 Heating

Discharge Pressure VS.Outdoor Temp

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)

Suction Pressure VS.Outdoor Temp

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)

6-1

SOUND LEVEL CHARACTERISTICS

Revision Y05-01Service Manual - ALPHA

6. SOUND LEVEL CHARACTERISTICS

6.1 Sound Pressure Level

Figure 1. Wall Mounted Figure 2. Floor Mounted

Figure 3. Ducted Figure 4. Cassette

6.2 Soud Pressure Level Spectrum (Measured as Figure 1)

Alpha 7 Alpha 9

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

FAN SPEED LINE

HI

LO

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

6-2

SOUND LEVEL CHARACTERISTICS

Revision Y05-01 Service Manual - ALPHA

Microphone Distance from Unit

Alpha 12

6.3 Outdoor units

6.4 Sound Pressure Level Spectrum (Measured as Figure 5)

Alpha 7 Cooling Alpha 7 Heating

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

6-3

SOUND LEVEL CHARACTERISTICS

Revision Y05-01Service Manual - ALPHA

Alpha 9 Cooling Alpha 9 Heating

Alpha 12 Cooling Alpha 12 Heating

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

7-1

ELECTRICAL DATA

Revision Y05-01Service Manual - ALPHA

7. ELECTRICAL DATA

7.1 Single Phase Units

MODEL Alpha 7 Alpha 9 Alpha 12

Power Supply

To indoor To indoor To indoor

1PH-230V-50Hz 1PH-230V-50Hz 1PH-230V-50Hz

Max Current, A 4.1 6.5 7.7

Circuit Breaker,A 10 10 10

Power Supply Wiring No. X
Cross Section mm

2

3x1.0 mm

2

3x1.0 mm

2

3x1.0 mm

2

Interconnecting Cable RC
Model No. X Cross Section mm

2

5x1.0 mm2 +2x0.5 mm

2

(OCT senser)

5x1.0 mm2 +2x0.5 mm

2

(OCT senser)

5x1.0 mm2 +2x0.5 mm

2

(OCT senser)

Interconnecting Cable ST
Model No. X Cross Section mm

2

4x1.0 mm

2

4x1.0 mm

2

4x1.0 mm

2

NOTE

Power wiring cord should comply with local lows and electrical
regulations requirements.

8-1

WIRING DIAGRAMS

Revision Y05-01Service Manual - ALPHA

8. WIRING DIAGRAMS

8.1 Indoor Unit Alpha 7,9,12