Electra Alpha 7 User 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.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title ....................... 0
A ........................... 0
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1-1 - 1-3 ................ 0
2-1 - 2-3 ................ 0
3-1 ........................ 0
4-1 - 4-3 ................ 0
5-1 - 5-12 .............. 0
6-1 - 6-3 ................ 0
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11-1....................... 0
12-1-12-32 ............ 0
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 BBB
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 BBD
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 BBC
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 32oC DB 23oC WB 46oC DB
Lower limit 21oC DB 15oC WB 10oC DB
Heating Upper limit 27oC DB 24oC DB 18oC WB
Lower limit 10oC 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 OUT L 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(oC) Data ENTERING AIR WB/DB ID Coil(oC)
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., (oC)
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.

5-2
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(oC)
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., (oC)
DB – Dry Bulb Temp., (oC)
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(oC) Data ENTERING AIR WB/DB ID Coil(oC)
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., (oC)
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(oC)
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., (oC)
DB – Dry Bulb Temp., (oC)
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
o
C )
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
o
C )
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)