● Bended indoor coil with treated aluminum fi ns and coating for improved
effi ciency.
● 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 (optional).
1.3 Indoor Unit
The indoor unit is wall mounted, and can be easily fi tted to many types of residential
and commercials applications.
It includes:
● Casing with air inlet and outlet grills.
● A large-diameter tangential fan.
SM ALPHA 1-E.3 GB
● Bended coil with treated aluminum fi ns.
● Motorized fl aps
● Multi-speed motor with internal protection
● Advanced electronic control box assembly
● Interconnecting wiring terminal block
● Mounting plate
1-1
Page 5
INTRODUCTION
CONTENT
1.4 Filtration
The Alpha / Delta series presents several types of air fi lters
● Easily accessible, and re-usable pre-fi lters (mesh)
● Pre-charged electrostatic fi lter (optional)
● Active carbon fi lter (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 / Delta outdoor units can be installed as fl oor 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 fi ns for RC units.
● Outlet air fan grill.
● Service valves” fl are” type connection.
● Interconnecting wiring terminal block.
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
1-2
Each unit is supplied with its own installation and operation manuals.
SM ALPHA 1-E.3 GB
Page 6
PRODUCT DATA SHEET
CONTENT
2. PRODUCT DATA SHEET
2.1 Alpha 7 / CON7 (Alpha)
Model Indoor UnitAlpha 7
Model Outdoor UnitCON 7 (Alpha)
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
SM ALPHA 1-E.3 GB
2-1
Page 7
PRODUCT DATA SHEET
CONTENT
2.2 Delta 7 R410A А2 DF / GCN 7 RC R410A A2
Model Indoor UnitDelta 7 R410A A2 DF
Model Outdoor UnitGCN 7 RC R410A A2
Installation Method of PipeFlared
CharacteristicsUnitsCoolingHeating
Capacity (4)
Power input (4)kW0.620.67
EER (Cooling) or COP(Heating) (4)W/W3.70 3.45
Energy effi ciency class(SII)AA
Power supply
Rated currentA2.8 3.0
Power factor
Prated (IDU)
Prated (IDU+ODU)
Starting currentA15
Circuit breaker ratingA10
Fan type & quantityCrossfl ow x 1
Fan speedsH/M/LRPM1050/-/900
Air fl ow (1)H/M/Lm3/hr450/-/380
External static pressureMin Pa0
Sound power level (2)H/M/LdB(A)50/-/44
Sound pressure level(3)H/M/LdB(A)37/-/31
Moisture removall/hr0.74
Condenstate drain tube I.Dmm16
INDOOR
DimensionsWxHxDmm680x250x180
Net Weightkg6
Package dimensionsWxHxDmm740x310x248
Packaged weightkg8.5
Units per palletunits32
Stacking heightunits8 levels
Refrigerant controlCapillary tube
Compressor type,modelRotary,Toshiba(GMCC),PA82X1C-4DZDE
Fan type & quantityPropeller(direct) x 1
Fan speedsHRPM830
Air fl ow Hm3/hr1450
Sound power levelHdB(A)60
Sound pressure level(3)HdB(A)50
DimensionsWxHxDmm830x545x245
Net Weightkg31.5
Package dimensionsWxHxDmm870x600x320
Packaged weightkg34
Units per palletUnits12
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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
SM ALPHA 1-E.3 GB
Page 8
PRODUCT DATA SHEET
CONTENT
2.3 Alpha 9 / GCN9 (Alpha)
Model Indoor UnitAlpha 9
Model Outdoor UnitGCN 9 (Alpha)
Installation Method of PipeFlared
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511
(2) Airfl ow 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.
Power input (4)
EER (Cooling) or COP(Heating) (4)3.34
Power supply220-240V/Single/50Hz
Running Current (Rated)3.5
Starting current
Circuit breaker rating
Model
Fan type & quantity
Fan speedsRPM
Air flow (1)
Coil
External static pressureNomPa
Airflow direction control
INDOOR
Air Filter
Running Current (Rated)
Sound
Cooling Temperature Operating Range (Min/Max)
Heating Temperature Operating Range (Min/Max)
Condenstate drain tube I.D
Dimensions/(packaged)
Weight
Model
Compressor
Fan
Coil
Sound
OUTDOOR
Cooling Temperature Operating Range (Min/Max)
Heating Temperature Operating Range (Min/Max)
Dimensions/(packaged)
Weight(packaged)
Refrigerant
Connections between
units
Operation control type
Heating elements (Option)Others-
Indoor unit
Outdoor unit
Total
Sensible capacit
Moisture removall/hr0.98
H/M/L
H
M
L
Rows
Fin Spacing1.5
Power level (H/M/L)
Pressure level(3) (H/M/L
WxDxHmm
Type
Model
Motor kW
Running Current (Rated
Motor Speed
Type
Blades
Diameter
Air flow
Motor Type
Speed (H/L)
Motor output
Area
Rows
Fin Spacing
Power level (H/L)
Pressure level(3) (H/L)
WxDxHmm
Type
Control
Chargless distance
Add charge per mtr
Liquid line
Suction line
Type
Max.tubing length
Max.height difference
UnitsCooling Onl
Btu/hr8870
kW2.6
kW1940
kW0.78
W/W3.34
V/Ph/Hz
L/S-
2
M
Qt
mm
amp
dB
mm
k
watt
amp
RPM
Qt
mm
m3/hr
RPM
watt
2
M
Qt
mm
dB
dB(A
k
k
/m
In.
In.(mm
m.
m.
kW-
Delta 9RC/ST fixed rpm R410A
ONG3-9 R410A B1
8870
2.6
1940
0.98
0.78
3.5
Delta 9RC/ST fixed rpm R410A
21°C DB (15 °C WB) / 32°C DB (23°C WB)
-
680*250*180 / 740*310*248
795*610*290 / 970*650*394
32 / 34.5
4m<L≤10m: +0g; 10m<L≤15m: +80g
-
21.7
10
Centifugal x1
1310/-/1100
125
100
0.126Area
2
0
-
supplied by others
0.13
53/-/49
41/-/35
10°C /27°C
16
9.5
ONG3-9 R410A B1
Single Rotary
PA103X1C-4DZDE
840/870
3.90/3.80
3000
Propeller(direct) x 1
3
400
1750
fixed RPM
730
20
0.45
2
1.5
60 / 49 / -
21°C/ 46°C
-9°C / 24°C
33 / 35.5
R410A
Capillary tube
0.91kg/7.5m
1/4"(6.35)
3/8"(9.53)
Flared
Max15
Max.8
RC7 Remote control
Heating
9720
2.85
-
-
0.850
3.35
3.8
(1) Airfl ow in ducted units;at nominal external static pressure.
(2)
Sound power in ducted units is measured at air discharge.
(3)
Sound pressure level measured at 1-meter distance from unit.
(4)
Rating conditions in accordance to AS 3823, ISO 5151 and ISO 13253 (for ducted units).
2-4
SM ALPHA 1-E.3 GB
Page 10
PRODUCT DATA SHEET
CONTENT
2.5 Delta 9 R410A B2 DF / ONG3-9 RC R410A B2 ISR
Model Indoor UnitDelta 9 R410A B2 DF ISR
Model Outdoor UnitONG3-9 RC R410A B2 ISR
Installation Method of PipeFlared
CharacteristicsUnitsCoolingHeating
Capacity (4)
Power input (4)kW0.750.83
EER (Cooling) or COP(Heating) (4)W/W3.60 3.50
Energy effi ciency class(SII)CC
Power supply
Rated currentA3.4 3.8
Power factor
Prated (IDU)
Prated (IDU+ODU)
Starting currentA16.6
Circuit breaker ratingA10
Fan type & quantityCrossfl ow x 1
Fan speedsH/M/LRPM1320/-/1100
Air fl ow (1)H/M/Lm3/hr450/-/360
External static pressureMin Pa0
Sound power level (2)H/M/LdB(A)53/-/49
Sound pressure level(3)H/M/LdB(A)41/-/35
Moisture removall/hr1.02
Condenstate drain tube I.Dmm16
INDOOR
DimensionsWxHxDmm680x250x180
Net Weightkg6
Package dimensionsWxHxDmm740x310x248
Packaged weightkg8.5
Units per palletunits32
Stacking heightunits8 levels
Refrigerant controlCapillary tube
Compressor type,modelRotary,Toshiba(GMCC),PA103X1C-4FZDE1
Fan type & quantityPropeller(direct) x 1
Fan speedsHRPM780
Air fl ow Hm3/hr1800
Sound power levelHdB(A)59
Sound pressure level(3)HdB(A)49
DimensionsWxHxDmm795x610x290
Net Weightkg33
Package dimensionsWxHxDmm970x650x394
Packaged weightkg35.5
Units per palletUnits9
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
SM ALPHA 1-E.3 GB
2-5
Page 11
PRODUCT DATA SHEET
CONTENT
2.6 Alpha 12 / GCN12 (Alpha)
Model Indoor UnitAlpha 12
Model Outdoor UnitGCN 12 (Alpha)
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
Power input (4)
EER (Cooling) or COP(Heating) (4)3.263.47
Power supply220-240V/Single/50Hz
Running Current (Rated)4.64.7
Starting current24
Circuit breaker rating10
ModelDelta 12RC/ST fixed rpm R410A
Fan type & quantityCentifugal x1
Fan speedsRPM
Air flow (1)
Coil
External static pressureNomPa
Airflow direction control-
INDOOR
Air Filtersupplied by others
Running Current (Rated)0.13
Sound
Cooling Temperature Operating Range (Min/Max)21 °C DB (15°C WB) / 32°C DB (23°C WB)
Heating Temperature Operating Range (Min/Max)10 °C ~27 °C
Condenstate drain tube I.D16
Dimensions/(packaged)840*250*180 / 900*310*248
Weight10.5
ModelONG3-12 R410A B1
Compressor
Fan
Coil
Sound
OUTDOOR
Cooling Temperature Operating Range (Min/Max)21 °C / 46 °C
Heating Temperature Operating Range (Min/Max)-9 °C / 24 °C
Dimensions/(packaged)795*610*290 / 970*650*394
Weight(packaged)34.5 / 37
Refrigerant
Connections between
units
Operation control type RC7 Remote control
Heating elements (Option)Others-
Indoor unit Delta 12RC/ST fixed rpm R410A
Outdoor unit ONG3-12 R410A B1
Total
Sensible capacitykW2.585
Moisture removall/hr1.05
H/M/L1210/-/950
H
ML127
Area0.167
Rows2
Fin Spacing1.5
Power level (H/M/L)53/-/47
Pressure level(3) (H/M/40/-/33
WxDxHmm
TypeSingle Rotary
ModelPANSONIC, 5PS132EAA22
Motor kW1085/1115
Running Current (Rate
Motor Speed3000
TypePropeller(direct) x 1
Blades3
Diameter400
Air flow 1850
Motor TypeFixed RPM
Speed (H/L)810
Motor output25
Area0.45
Rows2
Fin Spacing1.5
Power level (H/L)
Pressure level(3) (H/L)
Fan type & quantityCrossfl ow x 1
Fan speedsH/M/LRPM1250/-/880
Air fl ow (1)H/M/Lm3/hr620/-/390
External static pressureMin Pa0
Sound power level (2)H/M/LdB(A)53/-/47
Sound pressure level(3)H/M/LdB(A)40/-/33
Moisture removall/hr1.26
Condenstate drain tube I.Dmm16
INDOOR
DimensionsWxHxDmm840x250x180
Net Weightkg8
Package dimensionsWxHxDmm900x310x248
Packaged weightkg10.5
Units per palletunits32
Stacking heightunits8 levels
Refrigerant controlCapillary tube
Compressor type,modelRotary,Panasonic,5PS132EAC22
Fan type & quantityPropeller(direct) x 1
Fan speedsHRPM810
Air fl ow Hm3/hr1850
Sound power levelHdB(A)62
Sound pressure level(3)HdB(A)52
DimensionsWxHxDmm795x610x290
Net Weightkg34.5
Package dimensionsWxHxDmm970x650x394
Packaged weightkg37
Units per palletUnits9
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
Model Indoor UnitDELTA 17 R410A B1 DF ISR
Model Outdoor UnitONG3-14 RC R410A B1 ISR
Installation Method of PipeFlared
CharacteristicsUnitsCoolingHeating
Capacity (4)
Power input (4)kW1.40 1.40
EER (Cooling) or COP(Heating) (4)W/W3.38 3.50
Energy effi ciency class(SII)CC
Power supply
Rated currentA6.4 6.4
Power factor
Prated (IDU)
Prated (IDU+ODU)
Starting currentA28.4
Circuit breaker ratingA15
Fan type & quantityCrossfl ow x 1
Fan speedsH/M/LRPM1200/ - /1000
Air fl ow (1)H/M/Lm3/hr720/ - /590
External static pressureMin Pa0
Sound power level (2)H/M/LdB(A)55/-/50
Sound pressure level(3)H/M/LdB(A)43/ - /37
Moisture removall/hr1.75
Condenstate drain tube I.Dmm16
INDOOR
DimensionsWxHxDmm900x295x200
Net Weightkg11
Package dimensionsWxHxDmm955x360x270
Packaged weightkg14
Units per palletunits24
Stacking heightunits8 levels
Refrigerant controlCapillary tube
Compressor type,modelRotary,Panasonic,5KS170EAB21
Fan type & quantityPropeller(direct) x 1
Fan speedsHRPM910
Air fl ow Hm3/hr2160
Sound power levelHdB(A)64
Sound pressure level(3)HdB(A)53
DimensionsWxHxDmm795x610x290
Net Weightkg40.5
Package dimensionsWxHxDmm970x650x394
Packaged weightkg43
Units per palletUnits9
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airfl ow 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.
SM ALPHA 1-E.3 GB
2-11
Page 17
PRODUCT DATA SHEET
CONTENT
2.12 Delta 17 R410A DF / ONG3-17 RC R410A
Model Indoor UnitDelta 17 R410A DF
Model Outdoor UnitONG3-17 RC R410A
Installation Method of PipeFlared
CharacteristicsUnitsCoolingHeating
Capacity
Power input
EER (Cooling) or COP(Heating) (4)W/W3.20 3.30
Energy effi ciency class(SII)FE
Net Weightkg11
Package dimensionsWxHxDmm955x360x270
Packaged weightkg14
Units per palletunits24
Stacking heightunits8 levels
Refrigerant controlCapillary tube
Compressor type,modelRotary,TOSHIBA PA200X2CS-4KT1
Fan type & quantityPropeller(direct) x 1
Fan speedsHRPM910
Air fl ow Hm3/hr2160
Sound power levelHdB(A)65
Sound pressure level
DimensionsWxHxDmm795x610x290
Net Weightkg43
Package dimensionsWxHxDmm970x650x394
Packaged weightkg46
Units per palletUnits9
2. Refrigerant Valve Port (use Allen wrench to open/close)
3. Valve Protection Cap
4. Refrigerant Valve
5. Service Port Cap
6. Flare Nut
7. Unit Back Side
8. Copper Tube
When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along
the suction line at the lowest point of the riser. Incase the indoor unit is installed above the
outdoor, no trap is required.
Revision Y05-2SM ALPHA 1-E.3 GB
11-1
Page 86
12. CONTROL SYSTEM
CONTENT
12.1 Electronic Control
12.1.1 Introduction
The electronic control information is designed for service applications, and is common
to the following groups of air-conditioners:
● ST/ RC group -Cooling only / cooling and heating by heat pump.
● SH group -Cooling and heating by heat pump and supplementary
heater.
● RH group -Cooling, heating by heaters only.
12.1.2 Jumpers Settings
GROUPJ6 SettingJ2 Setting
ST / RCOpenOpen
SHClosedOpen
CONTROL SYSTEM
RHClosedClosed
SM ALPHA 1-E.3 GB
12-1
Page 87
CONTROL SYSTEM
CONTENT
12.2 Legend
AC - Alternate Current
A/C - Air-Conditioner
ANY - ON or OFF status
CLOCK - ON/OFF Operation Input, (dry contact)
COMP - Compressor
CPU - Central Processing Unit
ELUM - Extended Louver Upward Movement (Software Jumper)
E²PROM, EEP - Erase Enable Programmable Read Only Memory
HE - Heating Element
HPC - High Pressure Control
H/W - Hardware
ICP - Indoor Condensation Pump
ICT - Indoor Coil Temperature (RT2) sensor
IF, IFAN - Indoor Fan
IR - Infra Red
LEVEL1 - Normal Water Level
LEVEL2/3 - Medium/High Water Level
LEVEL4 - Overfl ow Level
Max - Maximum
Min - Minimum
min - Minute (time)
NA - Not Applicable
OCP - Outdoor Condensation Pump
OCT - Outdoor Coil Temperature (RT3) sensor
OF, OFAN - Outdoor Fan
OPER - Operate
Para. - Paragraph
RAT - Return Air Temperature (RT1) sensor
RC - Reverse Cycle (Heat Pump)
R/C - Remote Control
RCT - Remote Control Temperature
RH - Resistance Heater
RT - Room Temperature (i.e. RCT in IFEEL mode, RAT otherwise)
RV - Reversing Valve
SB, STBY - Stand-By
sec - Second (time)
Sect - Section
SH - Supplementary Heater
SPT - Set Point Temperature
ST - Standard (a Model with Cooling Only)
S/W - Software
TEMP - Temperature
W/O - Without
WVL - Water Valve
ΔT - The difference between SPT and RT.
in Heat Mode: ΔT = SPT-RT
in Cool/Dry/Fan Mode: ΔT = RT-SPT
12-2
SM ALPHA 1-E.3 GB
Page 88
CONTROL SYSTEM
CONTENT
12.3 General functions
12.3.1 COMP operation
For each Mode including POWER OFF & SB, a Min time delay of 3 min
before COMP restarting, excluding DEICING Mode
The Min operation time of COMP under different operating conditions is
Operation Mode
Heat, Cool or Auto Modes3 min.
Fan, Dry, Overfl ow, Protection modes, or mode changeignored
Min operation time of
COMP
12.3.2 IFAN operation
• Min time interval between IFAN speed change in AUTOFAN Mode, is 30 sec.
• Min time interval between IFAN speed change in H/M/L Mode is 1 sec.
• IFAN speed in Heat/Cool Autofan Mode is determined according to the following table:
ΔTIFAN Speed
ΔT ≥ 2HIGH
2 ≥ΔT ≥ 1MED
1 ≥ΔTLOW
where in Heat Mode: ΔT = SPT-RTin Cool Mode: ΔT = RT-SPT
Note:
• In Heat Mode, the rules in section 4.0.3 have the higher priority.
• The table above can be represent by a hysteresis curve which
will minimize the switching of the IFAN relay and will minimize the
change in IFAN speed:
IFAN speed
H
M
L
12.3.3 OFAN operation
• Min time interval between OFAN ON/OFF state change is 30 sec.
• In general, OFAN starts together with COMP.
12.3.4 HE operation
• Minimum Heaters ON or OFF time is 30 sec.
• Heaters can be activated only if IFAN is on.
SM ALPHA 1-E.3 GB
321
T [oc]
12-3
Page 89
CONTROL SYSTEM
CONTENT
12.3.5 Protections
• High pressure protection is applicable to all operating modes.
• Deicing control is valid in Heat and Auto Heat Mode only.
• Defrosting control is valid in Dry, Cool, Heat and Auto Modes.
• No reset after protection modes.
12.3.6 Thermistors operation
• Return air Temp. is detected by RAT (RT1) in normal Mode, or by RCT (R/C sensor)
in I-FEEL Mode.
• Indoor Coil Temp. is detected by ICT (RT2).
12.3.6.1 Defi nition of thermistor faults:
a. Thermistor is disconnected The thermistor reading is below -30
b. Thermistor is shorted The thermistor reading is over 75
o
c.
o
c.
c. Thermistor Temp reading doesn’t change (irrelevant for RT1) -
(i) This test is performed only once after a unit is switched from
OFF/STBY to operation. At the fi rst occurrence of 10 min
continuous COMP operation, the current ICT & OCT are
compared with those when the COMP was switched from OFF
to ON 10 min before. If the ΔT is less than 3
o
c, the thermistor is
regarded as defective.
(ii) The ICT and OCT no-change error can be disabled together by
connecting a4.7 kohm resistor (5%) to the OCT connector. These
o
resistors are equivalent to a thermistor at 43+/-1
c and 48+/-1oc
respectively.
(iii) Connecting a 4.7k resistor to the ICT connector will disable the
ICT no-change error only.
12-4
SM ALPHA 1-E.3 GB
Page 90
12.3.6.2 Handling the thermistor faults in a COMP unit
CONTENT
i. ICT/OCT thermistor is disconnected or shorted -
The invalid thermistor temperature is replaced by 43oc, so that the unit
can continue the normal operation. All protections related to that faulty
thermistor will be disabled. For example, in case of any ICT fault, the ICT
high pressure protection in Heat Mode and ICT defrost protection in Cool
Mode will not operate anymore. The same is also applied to the OCT fault.
ii. RAT thermistor is disconnected or shorted –
The RAT will be derived from the ICT by using the equations :
Heat Mode: RAT=ICT/2.3
Cool Mode RAT=ICT*4
Notes:
• In case of any thermistor failure, the STBY LED will be blinking until the
fault condition is corrected.
• User can use the system diagnostics function to fi nd out the nature of
the thermistor faults.
CONTROL SYSTEM
i. RAT thermistor is disconnected or shorted –
System will operate continuously in the last IFAN & WVL status when
turned ON.
Notes:
• As in the COMP unit, the STBY LED will be blinking to indicate a
thermistor fault. And, the user can use the system diagnostics function
to fi nd out the nature of the fault.
SM ALPHA 1-E.3 GB
12-5
Page 91
CONTROL SYSTEM
CONTENT
12.4 Cooling Mode - General
1) Room Temperature, RT, is detected by
• RAT in normal operation, or
• RCT (R/C sensor) in I-FEEL mode.
2) The resolution of RT is 1oc.
• RT is activating COMP/WVL if (RT > SPT), and
• RT is stopping COMP/WVL if (RT =< SPT).
3) Indoor Coil Temp is detected by ICT (RT2).
4) Outdoor Coil Temp is detected by OCT (RT3).
5) OFAN OPERATIONS
• OFAN starts together with COMP in general.
12-6
SM ALPHA 1-E.3 GB
Page 92
12.4.1 Cooling
CONTENT
Mode: Cool, Auto (at Cooling)
Temp: Selected desired temperature.
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by comparing RT and SPT.
(RT - SPT) [oc]
+3
+2
CONTROL SYSTEM
+1
0
-1
-2
COMP
(WVL)
OFAN
IFAN
ON
OFF
ON
OFF
USER FAN SPEED
Note:
SM ALPHA 1-E.3 GB
ON
RV
OFF
1) IFAN is always running at High, Medium or Low speed selected by user.
2) In IFEEL mode, the Room Temperature (RT) is the RCT from a R/C. Otherwise, the
RT is the RAT from the Room Thermistor.
12-7
Page 93
CONTROL SYSTEM
CONTENT
12.4.2 Cooling with Autofan
Mode: Cool, Auto (at cooling)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level and controls the IFAN speed for optimal comfort.
(RT - SPT) [oc]
+3
+2
+1
0
-1
-2
COMP
(WVL)
OFAN
ON
OFF
ON
OFF
12-8
IFAN
RV
H
M
L
ON
OFF
SM ALPHA 1-E.3 GB
Page 94
12.5 Heating Mode
[
]
CONTENT
12.5.1 Heating Mode - General
• In heating Mode, temp. compensation schedule will be activated for wall mounted
units.
CONTROL SYSTEM
SPT [oc]
18 ≤ SPT ≤ 270
27 < SPT ≤ 300
Notes :
• No compensation will be activated in Forced operation modes
12.5.2 IF operating rules
• As a general rule for RC and SH groups, when COMP is ON, excluding
protection modes, IFAN will be switched ON if
• ICT > 35oc or
at the IFTC 30 sec after the COMP is switched ON. In
this case, the IFAN will be started at low speed.
IFAN Speed
Any
Low
Stop
Add to SPT
I-FEEL ONI-FEEL OFF
o
c+2 oc
o
c+3 oc
EMD/ELD
EMD/ELD
General :
For WAX :
303540
152025
ICT [oc]
Notes :
1) In SH or RC group, if HE is set to OFF due to low ICT, IFAN will be
switched to LOW and will be turned OFF after 30 sec.
2) An exception to this rule (4.0.3.a) is the Back-up mode for SH.
• In RC and SH groups, whenever COMP & HE are both
OFF, excluding protection modes, IFAN operation will be according
to the following:
In other models IFAN will operate in low speed for 30 sec and then stop. If
COMP is OFF for more than 3 minutes and IFEEL Mode is inactive, IFAN will
operate in low speed according to the following graph:
IFAN (Low Speed)
ON
OFF
SM ALPHA 1-E.3 GB
SPT+4SPT+6ICT
o
c
12-9
Page 95
CONTROL SYSTEM
CONTENT
12.5.3 HE operation
• For all Groups, HE can be ON only when IFAN is ON.
• For all Groups, HE switches to OFF when ICT > 50
again when ICT ≤ 45oc.
• In SH or RC group, HE operation is limited by the following graph:
HE
ON
OFF
o
c, and is activated
General :
For WAX :
30
15
35
20
40
4550
ICT [oc]
• Back-up mode for SH group
After COMP has been working for 5 minutes, HE & IFAN are activated even
if the ICT is still below 35
o
c. This situation is called Back-up Mode. Both
HE & IFAN will work in Back-up Mode until the ICT reaches 35oc. Then, the
operation goes on in the usual mode .
12-10
SM ALPHA 1-E.3 GB
Page 96
CONTROL SYSTEM
CONTENT
12.5.4 Heating, RC or SH Group
Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off
Control function
Maintains room temp. at desired level by comparing RAT or RCT to SPT.
(RT - SPT) [oc]
+2
+1
0
-1
-2
-3
COMP
(WVL)
HE1
HE2
IFAN
ON
OFF
ON
OFF
ON
OFF
H/M/L
L
OFF
RV
SM ALPHA 1-E.3 GB
ON
OFF
Note 1Note 2
12-11
Page 97
CONTROL SYSTEM
CONTENT
12.5.5 Heating, RC or SH Group with Autofan
Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by controlling COMP, IFAN and OFAN.
(RT - SPT) [oc]
+2
+1
0
-1
-2
-3
COMP
(WVL)
HE1
HE2
IFAN
ON
OFF
ON
OFF
ON
OFF
H
M
L
OFF
12-12
RV
ON
OFF
Note 1Note 2
SM ALPHA 1-E.3 GB
Page 98
12.5.6 OFAN operation is controlled by the graph below when
CONTENT
CONTROL SYSTEM
OCT [oc]
+3
+2
1. (RAT ≥ SPT – 2oc), AND
o
2. (ICT ≥ 45
c), AND
3. (COMP is ON)
Otherwise, OFAN runs together with COMP.
+1
-1
OFAN
0
ON
OFF
SM ALPHA 1-E.3 GB
12-13
Page 99
CONTROL SYSTEM
CONTENT
12.6 Automatic Cooling or Heating
12.6.1 Automatic Cooling or Heating - General
• Switching-temperature between Cooling and Heating is SPT ± 3oc.
• Autofan in Automatic Cooling and Heating Mode will activate “Cooling
with Autofan Mode” and “Heating with Autofan Mode” respectively.
• When the Auto Mode is started with SPT +/-0
Auto Heat or Auto Cool mode immediately. Instead, the unit will be in
a temporary Fan Mode with IFAN operating at low speed.
The proper Auto Heat mode or Auto Cool will be started whenever the RT
reaches SPT-1oc or SPT+1oc respectively.
• For RC & SH units, Mode change between Auto Heat & Auto Cool
Modes is possible only after the COMP has been OFF during the
last T minutes.
Mode Changetime, T
Auto Cool to Auto Heat3 min
Auto Heat to Auto Cool4 min
o
c, the unit will not select
• When unit is changed form Cool/Dry mode to Auto Mode, the unit
will continue to operate at (Auto) Cool Mode until the conditions for
switching from Auto Cool to Auto Heat are satisfi ed.
Similarly, when unit is changed from Heat Mode to Auto Mode, the
unit will continue to operate at (Auto) Heat Mode until the conditions
for switching from Auto Heat to Auto Cool are satisfi ed.
12-14
SM ALPHA 1-E.3 GB
Page 100
CONTROL SYSTEM
CONTENT
12.6.2 Auto Cooling or Heating, RC or SH Groups
Mode: Auto
Temp: Selected desired temperature
Fan: Any
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by selecting between cooling and heating modes.
(RT - SPT) [oc]
+3
+2
+1
0
COMP
& OFAN
HE1
HE2
IFAN
-1
-2
-3
ON
OFF
ON
OFF
ON
OFF
H/M/L/OFF
Auto Heat Mode
H/M/L/OFF
L/OFF
Auto Cool ModeAuto Heat Mode
> 4 min> 3 min
(3)(3)
USER FAN SPEEDH/M/L/OFF
L/OFF
(5)
L/OFF
SM ALPHA 1-E.3 GB
RV
ON
OFF
> 3 min> 2 min
(4)
(4)
12-15
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