Intramech SWC-04-V-ECM, SWC-06-V-ECM, SWC-12-V-ECM, SWC-15-V-ECM, SWC-18-V-ECM Operation And Service Manual
...
SK2013-SON-002-TechMnl-SWC-002
HYDRONIC HIGH-WALL FAN COILS
INSTALLATION OPERATION AND
SERVICE MANUAL
SWC~EC SERIES
Page 2 of 67
SK2013-SON-002-TechMnl-SWC-002
INVESTING IN QUALITY, RELIABILITY & PERFORMANCE.
ISO 9001 QUALITY
Every product is manufactured
to meet the stringent
requirements of the
internationally recognized ISO
9001 standard for quality
assurance in design,
development and production.
CE SAFETY STANDARDS
All products conform to the
Certificate Europe directives
(Machinery Safety,
Electromagnetic Compatibility
and Low Voltage), as required
throughout the European
Community, to guarantee correct
standards of safety.
WEEE MARK
All products conform to the “WEEE”
directive to guarantee correct standards
of environmental solutions.
World Leading Design and Technology
Equipped with the latest CAD/CAM computer
aided design and manufacturing technology, our
factories in China and Thailand produce over
2,000,000 air conditioning units each year, all
conforming to the highest international standards
of quality and safety.
The Highest Standards of Manufacturing
In order to guarantee the very highest
standards and performance, we manage every
stage in the manufacturing of our products.
Throughout the production process we maintain
strict control, originating with our extensive
resources in research and development through
to the design and manufacture of almost every
individual component, from molded plastics to
the assembly of units and controllers.
Quality Controlled from Start to Finish
Our highly trained staff and strict quality
control methods enable us to produce
products with an exceptional reputation for
reliability and efficiency, maintained over
many years. As well as full CE certification
and ISO 9001, several products have
UL/CSA (NRTL) safety approval plus ARI
Certification in the USA, ROHS compliance for
Europe, giving you the confidence of knowing our
company is the right choice when selecting air
conditioning equipment.
ALWAYS MAKE SURE THIS MANUAL REMAINS WITH THE SWC-ECM WATER HIGH-WALL UNIT. READ
THIS MANUAL BEFORE PERFORMING ANY OPERATION ON THE SWC-EC WATER HIGH-WALL UNIT.
Page 3 of 67
SK2013-SON-002-TechMnl-SWC-002
Table of Content
MODEL CODE NOMENCLATURE .......................................................................................................... 5
A. GENERAL DESCRIPTION ............................................................................................................... 6
B. TECHNICAL DATA ........................................................................................................................ 7
B.1. GENERAL SPECIFICATION .................................................................................................................................. 7
B.1.1. SWC–V–EC Series 3-Speed Specifications ..........................................................................................................7
B.2. COIL DATA ..................................................................................................................................................... 9
B.2.1. 2-pipe systems ...................................................................................................................................................9
B.3. PERFORMANCE TABLES .................................................................................................................................. 10
B.3.1. Cooling Capacity Tables – 2-pipe systems .......................................................................................................10
B.3.2. Heating Capacity Table – 2-pipe systems ........................................................................................................14
B.4. DIMENSIONAL DRAWINGS .............................................................................................................................. 18
B.5. VALVE INFORMATION .................................................................................................................................... 20
B.5.1. 2-Way Valve Body ............................................................................................................................................20
C. SERVICE AND INSTALLATION ..................................................................................................... 21
C.1. INSTALLATION OF HIGH-WALL UNIT ................................................................................................................. 21
C.1.1. Selecting a Location .........................................................................................................................................21
C.1.2. Mounting Plate Dimensions.............................................................................................................................22
C.1.3. Installing the Mounting Plate ..........................................................................................................................23
C.1.4. Drilling the Condensate Drainage Hole ............................................................................................................23
C.1.5. Installing the Hydronic Unit .............................................................................................................................24
C.1.6. Drainage Piping Works .....................................................................................................................................24
C.2. UNIT MAINTENANCES AND PREPARATIONS ........................................................................................................ 25
C.2.1. Opening and Closing Of Lift-Up Grille Cover ....................................................................................................25
C.2.2. Removing Front Cover Assembly .....................................................................................................................25
C.2.3. Air Purging .......................................................................................................................................................25
C.2.4. Wiring Connections..........................................................................................................................................25
C.3. PIPE CONNECTIONS WITH VALVE ..................................................................................................................... 26
D. CONTROL SPECIFICATIONS ........................................................................................................ 27
D.1. SK-NCSWC-001 COMPLETE FUNCTION FCU CONTROLLER ................................................................................. 27
D.1.1. Abbreviations ...................................................................................................................................................27
D.1.2. Definition of Input/Output ..............................................................................................................................27
D.1.3. Wiring Diagram SK-NCSWC-001 .......................................................................................................................28
D.1.4. Configuration Settings .....................................................................................................................................29
D.1.5. Control Logics For 2-Pipe System.....................................................................................................................31
D.1.6. Control Logics For 4-Pipe System.....................................................................................................................35
D.1.7. Auto Fan Speed ................................................................................................................................................38
D.1.8. Louver ..............................................................................................................................................................39
D.1.9. Buzzer ..............................................................................................................................................................39
D.1.10. Auto Restart .....................................................................................................................................................39
D.1.11. Operation Of Control Panel On High-Wall Unit ...............................................................................................40
D.2. LED LIGHTS .................................................................................................................................................. 41
D.2.1. LED Indication and Error Description ...............................................................................................................42
D.2.2. LED indication on Master/Slave connection ....................................................................................................43
D.3. NETWORKING SYSTEM ................................................................................................................................... 44
D.3.1. Master-Slave Network .....................................................................................................................................44
D.3.2. Master – Slave Network Setup ........................................................................................................................45
D.3.3. Master-Slave Communication Method ............................................................................................................48
D.3.4. Unit Network Wiring Scheme ..........................................................................................................................49
D.4. SK-NCSWC-002 LIMITED FUNCTION FCU CONTROLLER .................................................................................... 50
D.4.1. Definition of Input/Output ..............................................................................................................................50
D.4.2. Wiring diagram SK-NCSWC-002 .......................................................................................................................51
D.4.3. Onboard configuration ....................................................................................................................................52
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SK2013-SON-002-TechMnl-SWC-002
D.4.4. Control Logics ..................................................................................................................................................52
D.4.5. LED Indication ..................................................................................................................................................53
D.4.6. Error Description ..............................................................................................................................................53
D.5. OPEN MODBUS PROTOCOL ............................................................................................................................. 54
E. USERS INTERFACE ..................................................................................................................... 58
E.1. REMOTE CONTROL HANDSET .......................................................................................................................... 58
E.2. WIRED WALL PAD ......................................................................................................................................... 59
E.2.1. Wall Pad Display ..............................................................................................................................................59
E.2.2. Wall Pad Operation Guidelines ........................................................................................................................60
E.2.3. EC unit RPM setting .........................................................................................................................................63
E.3. SENSOR RESISTANCE R-T CONVERSION TABLE.................................................................................................... 64
E.4.
T
ROUBLESHOOTING GUIDE
.............................................................................................................................. 66
Page 5 of 67
SK2013-SON-002-TechMnl-SWC-002
Model Code Nomenclature
SWC
-
06
- V S - ECM
ECM
EC motor configuration
S
Complete function onboard PCB with
integrated group control functionality.
W
Limited function onboard PCB with
drain-pump, louver and zone control
functionality.
V
2-pipe system
04
Model. See General Specification
(section B) for cooling/heating Sizes
capacities
06
12
15
18
20
24
SWC
Hydronic high-wall C Series
Page 6 of 67
SK2013-SON-002-TechMnl-SWC-002
A. General Description
This High-Wall Unit is designed to meet and exceed demanding requirements for efficiency, quiet
operation and good looks. The sleek profile and elegantly styled cabinet complements any interior
design theme, and the microprocessor assures accurate environmental control.
Cabinet ~ the cosmetically attractive cabinet is constructed of durable flame resistant acrylonitrilebutadiene-styrene (ABS) plastic. The silver white color and rounded corners provide its
contemporary appearance.
Water Coil ~ the water coil has a large heat transfer surface and utilizes the latest technology in fin
profile. It combines an advanced technology approach with the security of a traditional tube
thickness design. The water coil is also equipped with an air vent valve and a water purge valve.
Integral Hoses ~ an integral hose is a synthetic elastomer tube, with stainless steel outer
braiding and brass connectors, which enables quick, low cost connections with no brazing.
Blower and Motor ~ the High-wall unit incorporates only specially designed and tested high
power-factor, permanent split capacitor type blower motors, allowing the tangential blower wheel to
provide optimum performance in airflow-efficiency and quiet operation.
Filters ~ washable, easy-to-remove, fine mesh air filters are standard to all High-wall models. Tabs
located on the front of the unit can be unsnapped, allowing the filter to be easily slid downward
and removed. No tools are required, nor are dismantling of any equipment.
Air Grille Distribution ~ all High-wall units are equipped with both deflector blades and
independent directional vanes, enabling supply air to be automatically distributed, and air flow and
direction customized.
Microprocessor Control ~ see D. Controls Specifications (pages 27 - 54) for complete
control specifications and details. The main design features include:
~ FCEER rating class: A/B.
~ FCCOP rating class: B/C.
~ High efficiency brushless DC motor with PID algorithmic processing in auto-mode.
~ 2-pipe, 2-pipe and booster electric heat, 2-pipe and primary electric heat, 4-pipe with 4x2
device installed.
~ Cool, Heat, Auto, Dehumidifier and Fan modes.
~ Sleep, Auto-Fan, Daily Timer, Auto-Restart with memory functions.
~ User friendly remote control handset.
~ Heat and cool temperature protections and safety cut out.
~ 2-way and 3-way on/off valve control.
~ Addressable control and error diagnostics (Master-Slave) for sub-networks of up to 32
units, with IR handset as global control interface.
~ Wired wall pad controller (optional) with 7-day programmable timer, real-time clock, network
control (global and addressable) and error diagnostics.
~ Manual control panel in cabinet.
~ Auxiliary switch for cooling and heating signal.
~ Occupancy (remote on/off) contacts / economy mode contacts.
~ Open Modbus communication protocol.
~ Local PC host control solution (optional).
Page 7 of 67
SK2013-SON-002-TechMnl-SWC-002
B. Technical Data
B.1. General Specification
B.1.1. SWC–V–EC Series 3-Speed Specifications
Product range: SWC-ECM Hydronic High Wall with EC Motor
SWC-V~-ECM Hydronic High Wall 2-pipe with EC Motor
SWC-[Size]-V~-ECM
04
06
12
15
Unit Configuration
Configuration
2-pipe
Number Of Fan Blowers
Single
Power Supply
(V/Ph/H
z)
230/1/50
220/1/60
Operation Control
~S: Complete function onboard PCB with integrated group control functionality, incl. 1 pc return air sensor
and 2 pcs temperature sensors.
~W: Limited function onboard PCB with drain-pump, louver and zone control functionality, incl. 1 pc coil
temperature sensors.
Performance Data
Air
Total Air Flowe
H
m3/hr
370
500
500
645
M
290
370
370
445
L
220
290
290
370
Cooling
Cooling Capacitye
H
kW
1.31
2.17
2.59
3.16
M
1.09
1.71
2.03
2.36
L
0.88
1.43
1.68
2.03
Sensible Cooling
Capacitye
H
0.97
1.59
1.88
2.31 M 0.80
1.25
1.46
1.71
L
0.64
1.04
1.2
1.46
FCEERe
Rating
142
175
207
192
Class B B A A
Heating
Heating Capacitye
H
kW
1.60
2.64
3.12
3.83 M 1.33
2.08
2.44
2.83
L
1.06
1.71
1.98
2.44
Max. Electric Heater Capacity
0.6
1.2
FCCOPe
Rating
172
211
246
232
Class B B B B
Sound
Sound PressureLevel ( Outlet )
dB(A)
27/24/21
35/27/24
35/27/24
41/32/27
Sound Power Level ( Outlet )e
38/35/32
46/38/35
46/38/35
52/43/38
Electrical
Fan Motor Powere
H W 10
13
13
20
M 8 10
10
13
L
6 8 8
10
Fan Motor Apparent Power @ H
20
32
32
50
Fan Motor Running Current @ H
A
0.08
0.142
0.142
0.182
Hydraulic
Cooling Water Flow Rate
H
L/h
225
370
446
543
M
187
294
348
406
L
150
244
288
348
Cooling Pressure Drope
H
kPa
10.1
12
10
14.1 M 7.4
8.06
6.62
8.58
L
5.1
5.9
4.8
6.62
Heating Water Flow Rate
@H/M/L
L/h
Same as "Cooling Water Flow Rate"
Heating Pressure Drope
H
kPa
9 9 11
12 M 4.5
4.5 7 7
L
3.5
3.5 4 5
Water Content
L
0.045
0.0789
0.124
0.124
Construction
and Packing Data
Water
Connections
Type
Socket (Threaded Female)
In
mm [in]
12.70 [1/2]
Out
Condensate Drainage Connection
16 [0.63]
Dimensions
L
mm
876
W
228
H
300
Net Weight
Kg
11
12
13
13
1."e" refers to technical information listed on the Eurovent website. Eurovent testing
conditions:
a. Cooling mode (2-pipe):
b. Heating mode (2-pipe):
- Return air temperature: 27C DB/ 19C WB.
- Return air temperature: 20C.
- Inlet/ outlet water temperature: 7C/ 12C.
- Inlet water temperature: 50C.
- Water flow-rate: variable.
- Water flow-rate: same as 2-pipe
cooling.
Page 8 of 67
SK2013-SON-002-TechMnl-SWC-002
Product range: SWC-ECM Hydronic High Wall with EC Motor
SWC-V~-ECM Hydronic High Wall 2-pipe with EC Motor
SWC-[Size]-V~-ECM
18
20
24
Unit Configuration
Configuration
2-pipe
Number Of Fan Blowers
Single
Power Supply
(V/Ph/Hz)
230/1/50
220/1/60
Operation Control
~S: Complete function onboard PCB with integrated group control functionality, incl. 1 pc
return air sensor and 2 pcs temperature sensors.
~W: Limited function onboard PCB with drain-pump, louver and zone control functionality,
incl. 1 pc coil temperature sensors.
Performance Data
Air
Total Air Flowe
H
m3/hr
876
980
1240
M
740
760
1080
L
570
600
760
Cooling
Cooling Capacitye
H
kW
4.38
5.19
6.25
M
3.84
4.23
5.61 L 3.12
3.50
4.23
Sensible Cooling Capacitye
H
3.18
3.73
4.52
M
2.78
3.03
4.04
L
2.24
2.49
3.03
FCEERe
Rating
213
180
126
Class A B
B
Heating
Heating Capacitye
H
kW
5.25
6.14
7.44
M
4.58
4.97
6.65 L 3.68
4.09
4.97
Max. Electric Heater Capacity
1.6
FCCOPe
Rating
255
212
153
Class B B
C
Soun
d
Sound PressureLevel ( Outlet )
dB(A)
46/40/34
41/35/30
48/45/35
Sound Power Level ( Outlet )e
57/51/45
52/46/41
59/56/46
Electrical
Fan Motor Powere
H
W
30
45
83
M
20
24
60
L
13
18
24
Fan Motor Apparent Power @ H
83
90
200
Fan Motor Running Current @ H
A
0.272
0.4
0.75
Hydraulic
Cooling Water Flow Rate
H
L/h
752
889
1072
M
658
727
961
L
536
601
727
Cooling Pressure Drope
H
kPa
19.4
19.8
27.2 M 15.5
14
22.6
L
10.8
10.1
14
Heating Water Flow Rate
@H/M/L
L/h
Same as "Cooling Water Flow Rate"
Heating Pressure Drope
H
kPa
16
16
25 M 13
12
19 L 8 8 13
Water Content
L
0.192
0.252
0.252
Construction
and Packing Data
Water
Connections
Type
Socket (Threaded Female)
In
mm [in]
12.70 [1/2]
Out
Condensate Drainage Connection
16 [0.63]
Dimensions
L
mm
876
1063
W
228
240
H
300
310
Net Weight
Kg
14
16
16
1."e" refers to technical information listed on the Eurovent website. Eurovent testing conditions:
a. Cooling mode (2-pipe):
b. Heating mode (2-pipe):
- Return air temperature: 27C DB/ 19C WB.
- Return air temperature: 20C.
- Inlet/ outlet water temperature: 7C/ 12C.
- Inlet water temperature: 50C.
- Water flow-rate: variable.
- Water flow-rate: same as 2-pipe cooling.
Page 9 of 67
SK2013-SON-002-TechMnl-SWC-002
B.2. Coil Data
B.2.1. 2-pipe systems
Model
Fin Height
(mm.)
Fin Length
(mm.)
Fins per Inch
No. of Rows
No. of
Copper
No. of
Circuits
Tube
Diameter
(mm)
SWC-04
230
680
19.5
2 8 2
7
SWC-06
357
680 2 20 4 7
SWC-12
357
680 2 26 5 7
SWC-15
357
680 2 26 5 7
SWC-18
357
680 2 34 5 7
SWC-20
378
845 2 36 6 7
SWC-24
378
845 2 36 6 7
Page 10 of 67
SK2013-SON-002-TechMnl-SWC-002
B.3. Performance Tables
B.3.1. Cooling Capacity Tables – 2-pipe systems
SWC-04-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 370
1.3
0.913
16.1
13.3
10.1
0.0618
1.58
1.09
17.5
14.2
14.1
0.0754
1.68
1.09
17.5
14.5
15.6
0.08
1.97
1.15
18
15.4
20.7
0.094
290
1.08
0.757
15.7
13
7.36
0.0514
1.31
0.902
17
13.9
10.3
0.0626
1.39
0.902
17
14.1
11.4
0.0664
1.64
0.95
17.4
15
15
0.078
220
0.867
0.605
15.1
12.7
5.07
0.0413
1.05
0.72
16.3
13.4
7.06
0.056
1.12
0.721
16.3
13.7
7.8
0.0532
1.31
0.759
16.7
14.5
10.2
0.0624
7
370
1.02
0.793
17.2
14.2
6.6
0.0487
1.31
0.971
18.6
15.1
10.1
0.0625
1.41
0.0971
18.6
15.4
11.4
0.0671
1.7
1.03
19
16.2
15.8
0.0813
290
0.853
0.658
16.8
14
4.86
0.0407
1.09
0.804
18.1
14.8
7.4
0.052
1.17
0.804
18.1
15.1
8.33
0.0559
1.42
0.853
18.5
15.9
11.5
0.0675
220
0.687
0.526
16.2
13.7
2.04
0.0328
0.877
0.642
17.4
14.5
5.1
0.0418
0.94
0.642
17.4
14.7
5.73
0.0448
1.13
0.681
17.8
15.5
7.89
0.0541
9
370
0.721
0.67
18.2
15.2
3.6
0.0344
1.02
0.85
19.6
16
6.44
0.0485
1.11
0.851
19.6
16.3
7.54
0.0532
1.41
0.91
20.1
17.1
11.3
0.0675
290
0.604
0.556
17.9
15
1.7
0.0288
0.849
0.705
19.2
15.8
4.75
0.0405
0.93
0.705
19.2
16
5.54
0.0444
1.18
0.754
19.6
16.8
8.28
0.0562
220
0.49
0.445
17.4
14.8
1.37
0.0234
0.684
0.563
18.6
15.5
3.3
0.0327
0.749
0.563
18.6
15.7
3.84
0.0357
0.945
0.603
19
16.5
5.7
0.0451
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
Page 11 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-06-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 500
2.14
1.5
14.4
12.3
12
0.102
2.61
1.79
15.4
13
16.8
0.124
2.77
1.79
15.4
13.2
18.6
0.132
3.25
1.88
15.8
13.9
24.5
0.155
370
1.71
1.19
13.7
11.9
8.14
0.0814
2.07
1.42
14.7
12.5
11.3
0.0989
2.2
1.42
14.7
12.7
12.5
0.105
2.58
1.49
15
13.4
16.4
0.123
290
1.41
0.978
13.2
11.5
5.87
0.0672
1.71
1.16
14.1
12.1
8.14
0.0814
1.81
1.16
14.1
12.3
8.98
0.0862
2.12
1.22
14.4
12.9
11.7
0.101 7 500
1.69
1.3
15.6
13.4
7.9
0.0808
2.17
1.59
16.7
14.1
12
0.103
2.33
1.59
16.7
14.3
13.6
0.111
2.81
1.69
17.1
15
18.8
0.134
370
1.36
1.03
15.1
13.1
5.41
0.0646
1.71
1.25
16
13.7
8.06
0.0817
1.85
1.26
16
13.9
9.2
0.0884
2.23
1.34
16.4
14.5
12.7
0.107
290
1.12
0.85
14.6
12.8
3.93
0.0535
1.43
1.04
15.5
13.4
5.9
0.068
1.53
1.04
15.5
13.6
6.63
0.0729
1.84
1.1
15.8
14.1
9.09
0.0877 9 500
1.2
1.1
16.9
14.6
4.33
0.0573
1.69
1.4
18
15.2
7.72
0.0805
1.85
1.4
18
15.5
9.02
0.0882
2.34
1.5
18.3
16.1
13.5
0.112
370
0.967
0.874
16.5
14.4
1.82
0.0461
1.35
1.11
17.4
14.9
5.29
0.0644
1.48
1.11
17.4
15.1
6.16
0.0705
1.86
1.19
17.7
15.7
9.16
0.0889
290
0.805
0.719
16.1
14.2
1.52
0.0384
1.12
0.908
16.9
14.7
3.85
0.0534
1.22
0.91
16.9
14.8
4.47
0.0583
1.54
0.973
17.2
15.4
6.6
0.0734
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
SWC-12-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 500
2.56
1.78
12.6
11.2
9.98
0.122
3.1
2.11
13.3
11.7
13.9
0.148
3.29
2.11
13.3
11.8
15.3
0.157
3.85
2.22
13.6
12.4
20.1
0.183
370
2.02
1.4
12
10.7
6.69
0.0964
2.45
1.66
12.6
11.2
9.24
0.117
2.59
1.66
12.6
11.3
10.2
0.123
3.03
1.75
12.8
11.8
13.3
0.144
290
1.66
1.14
11.4
10.4
4.77
0.079 2 1.35
12
10.7
6.56
0.0953
2.12
1.35
12
10.9
7.22
0.101
2.47
1.42
12.2
11.3
9.39
0.118
7
500
2.04
1.54
14.1
12.6
6.65
0.0971
2.59
1.88
14.8
13
10
0.124
2.78
1.88
14.8
13.2
11.3
0.132
3.34 2 15.1
13.7
15.5
0.159
370
1.62
1.21
13.5
12.2
4.5
0.771
2.03
1.46
14.1
12.6
6.62
0.0968
2.19
1.48
14.2
12.7
7.54
0.105
2.63
1.57
14.4
13.2
10.3
0.126
290
1.33
0.991
13.1
11.9 2 0.0634
1.68
1.2
13.6
12.2
4.8
0.0801
1.8
1.21
13.6
12.4
5.38
0.0857
2.15
1.28
13.8
12.8
7.32
0.103
9
500
1.46
1.3
15.6
14
3.71
0.0695
2.03
1.65
16.3
14.4
6.51
0.0968
2.22
1.65
16.3
14.6
7.58
0.106
2.79
1.77
16.6
15
11.2
0.133
370
1.16
1.03
15.2
13.7
1.66
0.0555
1.61
1.3
15.7
14.1
4.4
0.0769
1.76
1.3
15.7
14.2
5.11
0.84
2.21
1.39
15.9
14.6
7.52
0.105
290
0.963
0.837
14.8
13.5
1.37
0.0459
1.33
1.06
15.3
13.8
1.9
0.0633
1.45
1.06
15.2
13.9
3.67
0.069
1.81
1.13
15.4
14.2
5.36
0.083
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
Page 12 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-15-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 645
3.12
2.18
13.2
11.5
14
0.149
3.79
2.59
14
12.1
19.6
0.181
4.02
2.59
14
12.3
21.6
0.192
4.71
2.73
14.3
12.9
28.5
0.225
445
2.34
1.62
12.4
11
8.54
0.111
2.83
1.92
13.1
11.5
11.8
0.135 3 1.92
13.1
11.6
13.1
0.143
3.51
2.02
13.3
12.1
17.1
0.167
370
2.02
1.4
12
10.7
6.69
0.0964
2.45
1.66
12.6
11.2
9.24
0.117
2.59
1.66
12.6
11.3
10.2
0.123
3.03
1.75
12.8
11.8
13.3
0.144
7
645
2.47
1.89
14.6
12.9
9.26
0.118
3.16
2.31
15.4
13.4
14.1
0.151
3.39
2.31
15.4
13.6
15.9
0.161
4.08
2.45
15.7
14.1
21.9
0.195
445
1.86
1.41
13.9
12.4
5.71
0.0888
2.36
1.71
14.6
12.9
8.58
0.113
2.53
1.72
14.6
13
9.65
0.121
3.05
1.82
14.8
13.5
13.2
0.145
370
1.62
1.21
13.5
12.2
4.5
0.0771
2.03
1.46
14.1
12.6
6.62
0.0968
2.19
1.48
14.2
12.7
7.54
0.105
2.63
1.57
14.4
13.2
10.3
0.126
9
645
1.76
1.6
16.1
14.2
5.1
0.0839
2.46
2.02
16.8
14.7
9.06
0.118
2.7
2.02
16.8
14.9
10.6
0.129
3.41
2.17
17.1
15.4
15.8
0.162
445
1.34
1.19
15.5
13.9
1.9
0.0637
1.86
1.5
16.1
14.3
5.6
0.0886
2.03
1.5
16.1
14.4
6.5
0.0968
2.55
1.61
16.3
14.9
9.62
0.122
370
1.16
1.03
15.2
13.7
1.66
0.0555
1.61
1.3
15.7
14.1
4.4
0.0769
1.76
1.3
15.7
14.2
5.11
0.084
2.21
1.39
15.9
14.6
7.52
0.105
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
SWC-18-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 876
4.33 3 13
11.4
19.3
0.206
5.25
3.57
13.8
12
26.9
0.25
5.56
3.57
13.8
12.2
29.7
0.265
6.51
3.76
14.1
12.7
39
0.31
740
3.79
2.62
12.6
11.2
15.4
0.181
4.59
3.11
13.4
11.7
21.3
0.219
4.86
3.12
13.4
11.9
23.5
0.232
5.68
3.28
13.7
12.4
30.8
0.271
570
3.08
2.12
12.1
10.8
10.8
0.147
3.72
2.51
12.7
11.2
14.9
0.177
3.94
2.51
12.7
11.4
16.4
0.188
4.6
2.65
13
11.9
21.4
0.219
7
876
3.45
2.61
14.4
12.7
12.9
0.164
4.38
3.18
15.2
13.2
19.4
0.209
4.7
3.18
15.2
13.4
21.9
0.224
5.65
3.38
15.5
14
30.1
0.27
740
3.03
2.28
14
12.5
10.3
0.144
3.84
2.78
14.9
13
15.5
0.183
4.11
2.78
14.9
13.2
17.4
0.196
4.94
2.95
15.1
13.7
23.9
0.236
570
2.47
1.84
13.6
12.2
7.26
0.118
3.12
2.24
143
12.6
10.8
0.149
3.34
2.24
14.3
12.8
12.2
0.159 4 2.38
14.5
13.2
16.6
0.191
9
876
2.47
2.21
15.9
14.1
7.18
0.118
3.44
2.79
16.7
14.6
12.6
0.164
3.76
2.79
16.7
14.7
14.7
0.179
4.73
2.99
17
15.2
21.8
0.226
740
2.18
1.93
15.7
14
5.79
0.104
3.02
2.44
16.4
14.4
10.1
0.144
3.3
2.44
16.4
14.5
11.7
0.157
4.14
2.61
16.6
15
17.3
0.198
570
1.78
1.56
15.2
13.7
4.13
0.0852
2.46
1.97
15.8
14.1
7.12
0.117
2.68
1.97
15.8
14.2
8.26
0.128
3.36
2.11
16
14.6
12.1
0.16
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
Page 13 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-20-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 980
5.13
3.53
12.5
11
19.7
0.244
6.19
4.18
13.2
11.5
27.2
0.295
6.55
4.19
13.2
11.7
30
0.312
7.65
4.41
13.5
12.2
39.3
0.365
760
4.18
2.86
11.9
10.7
13.9
0.199
5.04
3.39
12.6
11.1
19.1
0.24
5.33
3.39
12.6
11.3
21
0.254
6.21
3.57
12.8
11.7
27.4
0.296
600
3.46
2.36
11.4
10.3
10
0.165
4.16
2.79
12
10.7
13.8
0.198
4.39
2.79
12
10.8
15.1
0.209
5.12
2.94
12.2
11.3
19.7
0.244
7
980
4.1
3.07
14
12.4
13.2
0.196
5.19
3.73
14.7
12.9
19.8
0.247
5.55
3.74
14.7
13
22.3
0.265
6.66
3.96
14.9
13.5
30.5
0.318
760
3.36
2.49
13.5
12.1
9.4
0.16
4.23
3.03
14.1
12.5
14
0.202
4.53
3.03
14.1
12.7
15.7
0.216
5.42
3.21
14.3
13.1
21.4
0.258
600
2.78
2.06
13
11.8
6.84
0.133
3.5
2.49
13.6
12.2
10.1
0.167
3.74
2.5
13.6
12.3
11.3
0.178
4.47
2.64
13.8
12.7
15.4
0.213
9
980
2.97
2.6
15.5
13.9
7.53
0.142
4.1
3.28
16.2
14.3
13
0.195
4.47
3.28
16.2
14.4
15.1
0.213
5.59
3.51
16.4
14.9
22.2
0.267
760
2.44
2.11
15.1
13.6
5.4
0.117
3.35
2.66
15.7
14
9.24
0.16
3.65
2.66
15.7
14.1
10.7
0.174
4.56
2.85
15.9
14.5
15.7
0.218
600
2.04
1.74
14.7
13.4
3.97
0.0972
2.78
2.19
15.2
13.7
6.7
0.133
3.03
2.19
15.2
13.8
7.77
0.144
3.77
2.35
15.4
14.2
11.3
0.18
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
SWC-24-V-ECM
TAI DB24°C-WB17.4°C
TAI DB27°C-WB19°C
TAI DB27°C-WB19.5°C
TAI DB28°C-WB21°C
Twi
qa
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
Pf
Pfs
Tad
Taw
dPw
Qw
°C
m3/h
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s
kW
kW
°C
°C
kPa
l/s 5 1240
6.17
4.27
13
11.4
27.1
0.294
7.47
5.06
13.8
11.9
37.7
0.356
7.91
5.07
13.8
12.1
41.6
0.377
9.24
5.33
14.1
12.7
54.6
0.44
1080
5.54
3.82
12.7
11.2
22.5
0.264
6.69
4.53
13.4
11.7
31.2
0.319
7.09
4.53
13.5
11.9
34.4
0.338
8.28
4.77
13.7
12.4
45.1
0.395
760
4.18
2.86
11.9
10.7
13.9
0.199
5.04
3.39
12.6
11.1
19.1
0.24
5.33
3.39
12.6
11.3
21
0.254
6.21
3.57
12.8
11.7
27.4
0.296
7
1240
4.93
3.71
14.4
12.7
18.1
0.235
6.25
4.52
15.2
13.2
27.2
0.298
6.69
4.52
15.2
13.4
30.7
0.319
8.04
4.79
15.5
13.9
42.2
0.383
1080
4.43
3.32
14.2
12.5
15.1
0.211
5.61
4.04
14.9
13
22.6
0.267 6 4.05
14.9
13.2
25.5
0.286
7.21
4.29
15.2
13.7
34.9
0.344
760
3.36
2.49
13.5
12.1
9.4
0.16
4.23
3.03
14.1
12.5
14
0.202
4.53
3.03
14.1
12.7
15.7
0.216
5.42
3.21
14.3
13.1
21.4
0.258
9
1240
3.55
3.14
15.9
14.1
10.2
0.169
4.91
3.96
16.7
14.5
17.8
0.234
5.36
3.97
16.7
14.7
20.7
0.256
6.73
4.24
16.9
15.2
30.7
0.321
1080
3.2
2.81
15.7
14
8.54
0.153
4.42
3.55
16.4
14.4
14.8
0.211
4.82
3.55
16.4
14.5
17.2
0.23
6.04
3.8
16.6
15
25.4
0.288
760
2.44
2.11
15.1
13.6
5.4
0.117
3.35
2.66
15.7
14
9.24
0.16
3.65
2.66
15.7
14.1
10.7
0.174
4.56
2.85
15.9
14.5
15.7
0.218
Pf: total cooling capacity Tal: in flow air temperature dpw: pressure drop standard coil Twi: entering water temperature, water temperature arise 5°C.
Qw: fluid flow rate in heat exchanger Qa: air flow Pfs: sensible cooling capacity Tad: discharge air dry temperature Taw: discharge air wet temperature
Page 14 of 67
SK2013-SON-002-TechMnl-SWC-002
B.3.2. Heating Capacity Table – 2-pipe systems
SWC-04-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
370
1.47
30.4
0.0701
10.02
1.34
31.4
0.064
8.64
1.21
32.4
0.0579
7.26
1.08
33.4
0.0518
5.88
290
1.22
31.2
0.0579
7.2
1.11
32.1
0.0529
6.21 1 33
0.0479
5.22
0.89
33.9
0.0429
4.23
220
0.966
32.1
0.0462
4.87
0.882
32.9
0.0422
4.2
0.798
33.7
0.0382
3.53
0.714
34.5
0.0342
2.86
60
40
370
1.58
31.5
0.0378
3.48
1.45
32.4
0.0347 3 1.32
33.3
0.0316
2.52
1.19
34.2
0.0285
2.04
290
1.3
32.2
0.0314
2.47
1.2
33.1
0.0288
2.15
1.1
34
0.0262
1.83 1 34.9
0.0236
1.51
220
1.8344
33.1
0.025
1.69
0.961
34
0.023
1.47
0.876
34.9
0.021
1.25
0.791
35.8
0.019
1.03
70
60
370
2.83
42
0.0676
8.74
2.7
43
0.0644
8.05
2.57
44
0.0612
7.36
2.44
45
0.058
6.67
290
2.34
43.3
0.056
6.26
2.23
44.3
0.0533
5.77
2.12
45.3
0.0506
5.28
2.01
46.3
0.0479
4.79
220
1.87
45.1
0.0445
4.21
1.78
46
0.0424
3.88
1.69
46.9
0.0403
3.55
1.6
47.8
0.0382
3.22
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
Page 15 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-06-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
500
2.41
33.1
0.1148
11.81
2.2
33.9
0.105
10.2
1.99
34.7
0.0952
8.59
1.78
35.5
0.0854
6.98
370
1.91
34.1
0.091
7.87
1.74
34.8
0.0831
6.79
1.57
35.5
0.0752
5.71
1.4
36.2
0.0673
4.63
290
1.55
34.8
0.0746
5.57
1.42
35.5
0.0681
4.81
1.29
36.2
0.0616
4.05
1.16
36.9
0.0551
3.29
60
40
500
2.62
34.4
0.0624
4.05
2.4
35.2
0.0573
3.53
2.18
36
0.0522
3.01
1.96
36.8
0.0471
2.49
370
2.07
35.5
0.0495
2.71
1.9
36.2
0.0455
2.37
1.73
36.9
0.0415
2.03
1.56
37.6
0.0375
1.69
290
1.69
36.3
0.0407
1.95
1.56
37
0.0374
1.7
1.43
37.7
0.0341
1.45
1.3
38.4
0.0308
1.2
70
60
500
4.66
47.3
0.111
10.35
4.44
48.1
0.106
9.53
4.22
48.9
0.101
8.71 4 49.7
0.096
7.89
370
3.67
49
0.0877
6.84
3.5
49.8
0.0836
6.3
3.33
50.6
0.0795
5.76
3.16
51.4
0.0754
5.22
290
3.01
50.6
0.0719
4.83
2.87
51.3
0.0685
4.45
2.73
52
0.0651
4.07
2.59
52.7
0.0617
3.69
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
SWC-12-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
500
2.83
35.8
0.136
9.61
2.59
36.4
0.124
8.29
2.35
37
0.112
6.97
2.11
37.6
0.1
5.65
370
2.22
36.8
0.1063
5.37
2.03
37.3
0.0971
5.42
1.84
37.8
0.0879
5.47
1.65
38.3
0.0787
5.52
290
1.81
37.6
0.0863
4.38
1.65
38
0.0789
3.79
1.49
38.4
0.0715
3.2
1.33
38.8
0.0641
2.61
60
40
500
3.1
37.6
0.0742
3.33
2.85
38.1
0.0682
2.91
2.6
38.6
0.0622
2.49
2.35
39.1
0.0562
2.07
370
2.43
38.6
0.0585
2.21
2.24
39.1
0.0537
1.93
2.05
39.6
0.0489
1.65
1.86
40.1
0.0441
1.37
290
1.99
39.4
0.0474
1.57
1.83
39.9
0.0437
1.37
1.67
40.4
0.04
1.17
1.51
40.9
0.0363
0.97
70
60
500
5.49
52.5
0.131
8.37
5.23
53.1
0.125
7.71
4.97
53.7
0.119
7.05
4.71
54.3
0.113
6.39
370
4.29
54.2
0.1024
5.45
4.09
54.8
0.0976
5.02
3.89
55.4
0.0928
4.59
3.69
56
0.088
4.16
290
3.48
55.7
0.0832
3.8
3.32
56.2
0.0793
3.5
3.16
56.7
0.0754
3.2
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
Page 16 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-15-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
645
3.5
35.1
0.166
13.82
3.19
35.7
0.152
11.9
2.88
36.3
0.138
9.98
2.57
36.9
0.124
8.06
445
2.59
36.3
0.124
8.14
2.36
36.8
0.113
7.03
2.13
37.3
0.102
5.92
1.9
37.8
0.091
4.81
370
2.22
36.8
0.1063
6.27
2.03
37.3
0.0971
5.42
1.84
37.8
0.0879
4.57
1.65
38.3
0.0787
3.72
60
40
645
3.8
36.6
0.0907
4.74
3.49
37.2
0.0834
4.13
3.18
37.8
0.0761
3.52
2.87
38.4
0.0688
2.91
445
2.83
38
0.0675
2.84
2.6
38.5
0.0621
2.48
2.37
39
0.0567
2.12
2.14
39.5
0.0513
1.76
370
2.43
38.6
0.0583
2.21
2.24
39.1
0.0536
1.93
2.05
39.6
0.0489
1.65
1.86
40.1
0.0442
1.37
70
60
645
6.75
51.1
0.16
12.1
6.43
51.7
0.153
11.1
6.11
52.3
0.146
10.1
5.79
52.9
0.139
9.1
445
4.98
53.2
0.118
7.09
4.75
53.8
0.113
6.53
4.52
54.4
0.108
5.97
4.29
55
0.103
5.41
370
4.29
54.2
0.1024
5.45
4.09
54.8
0.0976
5.02
3.89
55.4
0.0928
4.59
3.69
56
0.088
4.16
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
SWC-18-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
876
4.78
35.2
0.229
18.7
4.37
35.8
0.209
16.1
3.96
36.4
0.189
13.5
3.55
37
0.169
10.9
740
4.17
35.7
0.199
14.7
3.81
36.3
0.182
12.7
3.45
36.9
0.165
10.7
3.09
37.5
0.148
8.7
570
3.36
36.6
0.161
10.06
3.07
37.1
0.147
8.69
2.78
37.6
0.133
7.32
2.49
38.1
0.119
5.95
60
40
876
5.22
36.8
0.125
6.44
4.8
37.4
0.115
5.62
4.38
38
0.105
4.8
3.96
38.6
0.095
3.98
740
4.57
37.5
0.1084
5.1
4.2
38
0.1
4.45
3.83
38.5
0.0916
3.8
3.46
39
0.0832
3.15
570
3.68
38.5
0.0883
3.54
3.39
38.9
0.0812
3.09
3.1
39.3
0.0741
2.64
2.81
39.7
0.067
2.19
70
60
876
9.24
51.2
0.22
16.3
8.81
51.9
0.21
15
8.38
52.6
0.2
13.7
7.95
53.3
0.19
12.4
740
8.06
52.3
0.192
12.8
7.68
52.9
0.183
11.8
7.3
53.5
0.174
10.8
6.92
54.1
0.165
9.8
570
6.49
53.9
0.156
8.75
6.18
54.4
0.148
8.06
5.87
54.9
0.14
7.37
5.56
55.4
0.132
6.68
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
Page 17 of 67
SK2013-SON-002-TechMnl-SWC-002
SWC-20-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
980
5.58
35.9
0.267
18.5
5.1
36.5
0.244
16
4.62
37.1
0.221
13.5
4.14
37.7
0.198
11
760
4.52
36.7
0.217
12.86
4.13
37.2
0.198
11.1
3.74
37.7
0.179
9.34
3.35
38.2
0.16
7.58
600
3.71
37.4
0.177
9.1
3.39
37.9
0.162
7.87
3.07
38.4
0.147
6.64
2.75
38.9
0.132
5.41
60
40
980
6.13
37.6
0.147
6.47
5.64
38.2
0.135
5.65
5.15
38.8
0.123
4.83
4.66
39.4
0.111
4.01
760
4.98
38.6
0.12
4.52
4.58
39.1
0.11
3.95
4.18
39.6
0.1
3.38
3.78
40.1
0.09
2.81
600
4.09
39.4
0.0981
3.23
3.77
39.9
0.0903
2.83
3.45
40.4
0.0825
2.43
3.13
40.9
0.0747
2.03
70
60
980
10.83
52.6
0.257
22.1
10.3
53.2
0.245
17.9
9.77
53.8
0.233
13.7
9.24
54.4
0.221
9.5
760
8.72
54.2
0.207
11.19
8.31
54.7
0.198
10.3
7.9
55.2
0.189
9.41
7.49
55.7
0.18
8.52
600
7.17
55.5
0.171
7.89
6.83
56
0.163
7.28
6.49
56.5
0.155
6.67
6.15
57
0.147
6.06
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
SWC-24-V-ECM
TAI 18°C
TAI 20°C
TAI 22°C
TAI 24°C
Twi
Two
qa
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
Pf
Tad
Qw
dPw
°C
°C
m3/h
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
kW
°C
l/s
kPa
45
40
1240
6.78
35.2
0.324
26.1
6.19
35.8
0.296
22.5
5.6
36.4
0.268
18.9
5.01
37
0.24
15.3
1080
6.05
35.6
0.29
21.5
5.53
36.2
0.265
18.5
5.01
36.8
0.24
15.5
4.49
37.4
0.215
12.5
760
4.52
36.7
0.217
12.86
4.13
37.2
0.198
11.1
3.74
37.7
0.179
9.34
3.35
38.2
0.16
7.58
60
40
1240
7.4
36.8
0.177
8.99
6.81
37.4
0.163
7.84
6.22
38
0.149
6.69
5.63
38.6
0.135
5.54
1080
6.63
37.3
0.159
7.42
6.1
37.9
0.146
6.48
5.57
38.5
0.133
5.54
5.04
39.1
0.12
4.6
760
4.98
38.6
0.12
4.52
4.58
39.1
0.11
3.95
4.18
39.6
0.1
3.38
3.78
40.1
0.09
2.81
70
60
1240
13.2
51.3
0.313
22.8
12.5
51.9
0.298
21
11.8
52.5
0.283
19.2
11.1
53.1
0.268
17.4
1080
11.6
52.1
0.279
18.7
11.1
52.7
0.266
17.2
10.6
53.3
0.253
15.7
10.1
53.9
0.24
14.2
760
8.72
54.2
0.207
11.19
8.31
54.7
0.198
10.3
7.9
55.2
0.189
9.41
7.49
55.7
0.18
8.52
Pf: total heating capacity dpw: pressure drop standard coil Qw: fluid flow rate in heat exchanger Tad: discharge air dry temperature
Tai: in flow air temperature Twi: in flow fluid temperature Two: out flow fluid temperature Qa: air flow
Page 18 of 67
SK2013-SON-002-TechMnl-SWC-002
B.4. Dimensional Drawings
Dimensional drawing for SWC-04/06/12/15/18-ECM
Model
Unit Dimensions (mm)
A B C D E F G
H
SWC-04/06/12/15/18
40
105
875
55
105
R20
60
74
Model
Unit Dimensions (mm)
a b c d e f g
h
SWC-04/06/12/15/18
200
55
30
30
220
229
10
300
Model
Unit Dimensions (mm)
1 2 3
4
SWC-04/06/12/15/18
665
170
710
125
(All dimensions shown in mm)
Page 19 of 67
SK2013-SON-002-TechMnl-SWC-002
Dimensional drawing for SWC-20/24-ECM
Model
Unit Dimensions (mm)
A B C D E F G
SWC-20/24
90
1050
51
90
15
73
74
Model
Unit Dimensions (mm)
a b c d e f g
h
SWC-20/24
215
52
30
32
235
310
58
13
Model
Unit Dimensions (mm)
1 2 3
4
SWC-20/24
855
155
820
175
(All dimensions shown in mm)
Page 20 of 67
SK2013-SON-002-TechMnl-SWC-002
B.5. Valve Information
B.5.1. 2-Way Valve Body
Valve Dimensions (mm)
DN A B C D
D15
(G1/2”)
52
47
19.5
63
Page 21 of 67
SK2013-SON-002-TechMnl-SWC-002
C. Service and Installation
C.1. Installation of High-Wall Unit
C.1.1. Selecting a Location
Select the location for the High-wall unit with the following considerations:
1. The front of the air inlet and outlet should be free from any obstructions. The air
should flow freely.
2. The wall where the unit is to be mounted should be stiff enough not to resonate
and produce noise.
3. The location should allow easy access to install the connecting water pipes, and
be where drainage can be easily obtained.
4. Ensure the clearance on every side of the fan coil unit conforms to the following
drawing.
5. From the floor the height should be more than eye level.
6. Avoid installing the unit in direct sunlight.
* Required clearance for maintenance and servicing is as shown above.
** All dimensions shown in mm.
7. The signal receiver on the unit must be kept away from any high frequency
emission source.
8. Keep the unit away from fluorescent lamps, which may affect the control system.
9. To avoid electromagnetic control system interference, ensure control wires
are installed separately from 220-240 VAC power wires.
10. Where electromagnetic waves exist use shielded sensor cables.
11. Install a noise filter if any harmful noise exists in the power supply.
Higher than eye level
Page 22 of 67
SK2013-SON-002-TechMnl-SWC-002
C.1.2. Mounting Plate Dimensions
SWC-04/06/12/15/18 –ECM
SWC-20/24 –ECM
(All dimensions shown in mm)
Page 23 of 67
SK2013-SON-002-TechMnl-SWC-002
C.1.3. Installing the Mounting Plate
1. Select the structural position (e.g. a pillar or lintel) on the wall.
2. Then temporarily fasten the mounting plate on the wall with a steel nail.
3. Mount the mounting plate horizontally as shown in the
above figure or by means of gradiometer. Fail to
follow this may cause indoor water dripping and
abnormal noise.
4. Fix the mounting plate by means of expansion screws
or tapping screws.
C.1.4. Drilling the Condensate Drainage Hole
1. Ensure that the hole for condensate drainage is correctly positioned. The height should be lower
than the below edge of the indoor unit.
2. Drill a 65mm diameter hole with a descending slope.
3. Seal it off with putty after installation.
Page 24 of 67
SK2013-SON-002-TechMnl-SWC-002
C.1.5. Installing the Hydronic Unit
1. Pass the piping through the hole in the wall and hook the indoor unit on the mounting plate at the
upper hooks.
2. Move the body from side to verify if it is securely fixed.
3. While pushing the unit onto the wall from the underside, hook it up on the mounting plate at the
lower part.
4. Make sure the units are firmly hooked up on the mounting plate.
C.1.6. Drainage Piping Works
1. Install the drain hose so that it slopes downward slightly for free drainage. Avoid installing it as
shown in the below illustration marked with “X”.
2. Put water in the drain pan and make sure that the water is drained outdoors.
3. If the flexible drain hose provided in the indoor unit is not long enough, please extend
it by joining it to an extension hose (not provided). Be sure to insulate the connecting
part of the extension drain hose with a shield pipe as shown.
4. In case that the attached (if it is attached) drain hose passes through an indoor area,
insulate it with heat insulation material.
Page 25 of 67
SK2013-SON-002-TechMnl-SWC-002
Open the lift-up grilled cover by lifting
from the bottom position indicated by the
arrow
C.2. Unit Maintenances and Preparations
C.2.1. Opening and Closing Of Lift-Up Grille Cover
C.2.2. Removing Front Cover Assembly
1. Set the horizontal louver to horizontal position.
2. Remove the screw caps below the louver, and then remove the mounting screws.
3. Open the lift-up grille cover by grasping the panel at both sides as shown above.
4. Remove the remaining screws located at the centers.
5. Grasp the lower part of the front cover and pull the entire assembly out and up towards you.
C.2.3. Air Purging
1. After connecting the water inlet and outlet pipes to the main supply lines turn on the main breaker
and operate the unit in COOLING mode.
2. Open the water inlet valve and flood the coil.
3. Check all connections for water leakage, if no leak is found open the purging valve by using hand
and support the unit with an open end wrench. Then purge the air trapped inside the coil. When
performing this activity, take care not to touch the electrical parts.
4. Close the purging valve when no bubbles appear.
5. Open the water outlet valve.
C.2.4. Wiring Connections
1. Unit components are wired to the terminal block of indoor unit. Wirings can be accessed from
the terminal block inside the control box.
Close the lift-up grilled cover by pressing
the two sides down at the position of the
arrow.
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C.3. Pipe Connections with Valve
Pre-assembly
Complete Assembly
Flexible copper
Valve body
with actuator
½” gasket
Coil connector
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D. Control Specifications
D.1. SK-NCSWC-001 Complete function FCU Controller
Used in all High-wall [V/P] ~S unit configurations.
D.1.1. Abbreviations
Ts = Setting temperature
Tr = Room air temperature
Ti1 = Chilled water coil temperature
Ti2 = Hot water coil temperature
AUX1 = Hot water free contact
AUX2 = Chilled water free contact
MTV1 = Chilled Motorized valve
MTV2 = Hot Motorized valve
D.1.2. Definition of Input/Output
I/O
Code
2-Pipe
4-Pipe
Analogue Input
Return air sensor
AI1
Return air temperature (Tr)
2-pipe coil circuit sensor
AI2
Chilled / hot water coil
circuit (Ti1)
Chilled water coil
circuit (Ti1)
Hot water sensor
AI3
N/A
Hot water coil circuit
(Ti2)
Input
LED display / IR receiver
X-DIS1
Digital communication port to LED display / IR
receiver board.
Wired wall pad
TTL1
Digital communication port to wired wall pad board.
Digital input
Occupancy contact
On/Off
Window contacts: for remote ON/OFF (when DIPB
SW1 = 1).
Economy contacts: for remote activation of
economy mode (when DIPB SW1 = 0).
Electrical heater safety switch
EH
Voltage-free (NC). The contact is closed before the
EH is turned on.
Power input
Phase
L1
Power supply to the PCB and all the loads
connected to the voltage outputs. Max length: 5 m.
Neutral
N1
Power supply to the PCB and all the loads
connected to the voltage outputs. Max length: 5 m.
Earth
PE1
Power supply to the PCB and all the loads
connected to the voltage outputs. Max length: 5 m.
Voltage output
Fan
CN4
Fan driver
Valve 1
MTV1
2-pipe coil circuit valve
output – chilled / hot
water valve.
Voltage output (L)
2-pipe coil circuit valve
output – chilled water
valve.
Voltage output (L)
Valve 2
MTV2
Reserved
4-pipe coil circuit valve
output – hot water
valve.
Voltage output (L)
Voltage of electrical heater
(Live)
HEAT
Voltage output (L), maximum 25 A
Output
Stepping motor
CN1 / CN2
Louver stepping motor relay
Auxiliary contact 2
AUX2
Cooling mode signal relay (NO). Voltage free
contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m, 5 A
Auxiliary contact 1
AUX1
Heating mode signal switch (NO). Voltage free
contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m. 5 A
Serial BUS port
CN3
Master-slave network serial connection OR
MODBUS / local PC host network serial
connection.
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D.1.3. Wiring Diagram SK-NCSWC-001
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D.1.4. Configuration Settings
There are 2 DIP switches set on the PCB:
1. DIPA-S1 (8 positions)
SW1 – SW6: used for master-slave / BMS network address.
SW7 – SW8: used for operating mode configuration.
2. DIPB-S2 (6 positions)
SW1: Occupancy / economy mode selection.
SW2: 2-pipe / 4-pipe configuration selection.
SW3: Thermoelectric valve configuration selection (2-pipe system only).
SW4: Pre-heat protection temperature selection.
SW5 – SW6: brushless DC fan motor configuration.
1. Default DIP Switch Settings:
DIPA –S1 DIPB –S2
2. Thermoelectric Valve Configuration:
An on board dip switch SW3 of DIPB is used for this configuration.
3. Unit Configuration:
On board DIP Switch on DIPB are used for below configuration.
SW1
PR-O contact setting
0
Economy contact
1
Window contact
SW3
Thermoelectric valve (MTV)
1
With valve
0
No valve
Figure 2
Figure 1
Unit Configuration
WITHOUT Valve
Unit Configuration
WITH Valve
0=OFF
1=ON
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SW2
System setting
0
2-pipes system
1
4-pipes system
SW4
Preheat setting
1
28°C
0
36°C
4. Motorized Fan Speed Settings for Different Models:
Unit Model
Speed (RPM)
S3
SW5
SW6
Low
Medium
High
SWC-04
500
600
700 0 0 0 SWC-06
600
700
900 0 1
0
SWC-12
600
700
900 0 0
1
SWC-15
700
800
1100
0 1 1
SWC-18
900
1100
1300
1 0 0
SWC-20
800
900
1100
1 1 0
SWC-24
900
1200
1350
1 0 1
Default RPM
700
800
1100
1 1 1
5. Mode configuration:
DIPA-S1
Model
SW7
SW8
Model setting
0
0
Cool-Heat
0 1 Cool-Heat + booster heater
1
0
Cooling only
1
1
Cool + primary heater
6. Air Conditioner ON/OFF
There are 3 ways to turn the system on or off:
a) By the ON/OFF button on the handset or wired wall pad.
b) By the programmable timer on the handset or wired wall pad.
c) By the manual control button on the air conditioner.
7. Power On Setting
a) When the power on signal is received by the air conditioner, the Mode, Fan Speed, Setting temperature and
Swing setting will be the same as the handset setting before the last power off.
b) When the power on signal is received by the air conditioner, the Mode, Fan Speed, Setting temperature,
Swing setting and Timer ON/OFF weekly program will be the same as wall pad setting before the last
power off.
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D.1.5. Control Logics For 2-Pipe System
D.1.5.1. With Thermoelectric Valve Configuration
COOL MODE
a) MTV2, AUX1 and heater are always off.
b) If Tr ≥ Ts + 1ºC (or + 4ºC if economy contact is activated), cool operation is activated, MTV1 and AUX2 are
turned on. Indoor fan runs at set speed.
c) If Tr < Ts, cool operation is terminated, MTV1 and AUX2 are turned off. Indoor fan runs at set speed.
d) The range of Ts is 16 - 30ºC
e) Indoor fan speed can be adjusted for low, medium, high and auto.
f) When turned on, MTV1 requires 30 seconds before it is fully open.
g) When turned off, MTV1 requires 120 seconds before it is fully closed.
h) When the unit is turned off, indoor fan will delay for 5 seconds before it is turned off.
LOW TEMPERATURE PROTECTION OF INDOOR COIL
a) If Ti1 ≤ 2ºC for 2 minutes, MTV1 and AUX2 are turned off. If indoor fan is set for low speed, it will run at
medium speed. If it is set at medium or high speed, it will keep running at the same speed.
b) If Ti1 ≥ 5ºC for 2 minutes, MTV1 and AUX2 are turned on. Indoor fun runs at set speed.
FAN MODE
a) Indoor fan runs at the set speed while heater, MTV1, MTV2, AUX1 and AUX2 are turned off.
b) Indoor fan speed can be adjusted for low, medium and high.
HEAT MODE
Heat Mode without Electrical Heater
a) MTV2, AUX2 and heater are always off.
b) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated, MTV1 and
AUX1 are turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, MTV1 and AUX1 are turned off. Indoor fan runs at
200RPM.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
f) MTV1 will delay for 30 seconds before it is turned on.
g) MTV1 will delay for 120 seconds before it is turned off.
Heat Mode with Electrical Heater as Booster
a) MTV2 and AUX2 are always off.
b) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated, MTV1
and AUX1 are turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, MTV1 and AUX1 are turned off. Indoor fan runs at
200RPM.
d) If Ti1 < 40ºC, the electrical heater is turned on. If 40 ≤ Ti1 < 45ºC, the electrical heater is kept
original state. If Ti1 ≥ 45ºC, the electrical heater is turned off.
e) The range of Ts is 16 - 30ºC.
f) Indoor fan speed can be adjusted for low, medium, high and auto.
g) MTV1 will delay for 30 seconds before it is turned on.
h) MTV1 will delay for 120 seconds before it is turned off.
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Heat Mode with Electrical Heater as Primary Heat Source
a) MTV1, MTV2 , and AUX2 are always off.
b) If Ti2 ≤ 30ºC (or Ti2 is damaged or not connected),
1) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated,
electrical heater and AUX1 are turned on. Indoor fan runs at set speed.
2) If Tr > Ts, heat operation is terminated, Electrical heater and AUX1 are turned off. Indoor
fan runs at 200RPM.
c) If Ti2 > 30ºC, MTV2 and AUX2 is off.
1) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated,
Electrical heater are turned off. MTV1 and AUX1 are turned on. fan runs at set speed.
2) If Tr > Ts, heat operation is terminated, MTV1 and AUX1 are turned off. Indoor fan runs
at 200RPM.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
PRE-HEAT
Pre-Heat without Electrical Heater
a) If Ti1 < 36ºC (or 28ºC depends on DIP setting), when MTV1 and AUX1 are on, indoor fan runs
at 200RPM.
b) If Ti1 ≥ 38ºC (or 30ºC depends on DIP setting), when MTV1 and AUX1 are on, indoor fan runs
at set speed.
c) If indoor coil temperature sensor is damaged, pre-heat time is set for 2 minutes and indoor fan
runs at set speed.
Pre-Heat with Electrical Heater
a) If Indoor fan speed ≥ 300RPM, electrical heater will turned on.
POST-HEAT
Post-Heat without Electrical Heater
a) If Ti1 ≥ 38ºC, MTV1 and AUX1 are off, indoor fan continues to run at set speed.
b) If 36C ≤ Ti1 ≤ 38C, when MTV1 and AUX1 are off. Indoor fan keeps original state.
c) If Ti1 < 36ºC, MTV1 and AUX1 are off. Indoor fan runs at 200RPM.
d) If indoor coil temperature coil is damaged, post-heat time is set for 3 minutes with indoor fan
running at set speed.
Post-Heat with Electrical Heater
a) Indoor fan will runs at 200RPM before the unit off for 20 seconds.
Over-heat Protection of Indoor Coil
a) If Ti1 ≥ 75ºC, MTV1 and AUX1 are off, indoor fan remains on and runs at high speed.
b) If Ti1 < 70ºC, MTV1 and AUX1 are on, indoor fan remains on and runs at set speed.
c) If indoor coil temperature sensor is damaged, the protection mode will become obsolete and
the unit will work according to the Pre-heat and Post-heat program.
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DEHUMIDIFICATION MODE
a) MTV2, AUX1 and heater are always off.
b) If Tr ≥ 25ºC, MTV1 and AUX2 will be on for 3 minutes, and off for 4 minutes.
c) If 16ºC ≤ Tr < 25ºC, MTV1 and AUX2 will be on for 3 minutes, and off for 6 minutes.
d) If Tr < 16ºC, MTV1 and AUX2 will be turned off for 4 minutes.
e) At the end of the above dehumidification cycle, system will decide the next dehumidification control
option. Indoor fan will run at low speed throughout the dehumidification process.
AUTO-MODE
Without Electrical and with Electric Heater as Booster
a) Every time the unit is turned on, MTV1 is on AUX1, AUX2 and fan is off. MTV2 and
heater are always off. After 120 seconds, decide the subsequent operation mode as
follow:
1) If the coil temperature sensor (Ti1) ≥ 36°C, MTV1, AUX1 and fan turn on or off
according to HEAT mode.
2) If Ti1 < 36°C, MTV1, AUX2 and fan turn on or off according to COOL mode.
b) Unit remains in AUTO COOL or AUTO HEAT mode throughout the operating cycle until
the user changes the mode manually or restarts the unit.
c) Should there be failure of Ti1 sensor, auto mode is not allowed.
With Electric Heater as Primary Heat Source
a) If current running mode is AUTO COOL mode, it will change over to AUTO HEAT mode
upon satisfy all the conditions below:
1) Ts - Tr ≥ 1.0°C (or - 4ºC if economy contact is activated).
2) MTV1 has stop ≥ 10 minutes.
b) If current running mode is AUTO HEAT mode, it will change over to AUTO COOL mode
upon satisfy all the conditions below:
1) Tr - Ts ≥ 1.0°C (or + 4ºC if economy contact is activated).
2) MTV1 has stop ≥ 10 minutes.
Note: AUTO COOL or AUTO HEAT operations are the same as COOL or HEAT mode
respectively.
D.1.5.2. Without Thermoelectric Valve Configuration
COOL MODE
a) Heater, AUX1, MTV1 and MTV2 are always off.
b) If Tr ≥ Ts + 1ºC (or + 4ºC if economy contact is activated), cool operation is activated, AUX2 is on.
Indoor fan runs at set speed.
c) If Tr < Ts, cool operation is terminated, AUX2 is off. Indoor fan is turned off.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
f) When the unit is turned off, indoor fan will delay for 5 seconds before it is turned off.
LOW TEMPERATURE PROTECTION OF INDOOR COIL
a) If Ti1 ≤ 2ºC for 2 minutes, AUX2 is off. If low speed is selected via user interface, indoor fan runs at medium
speed. If medium or high speed is selected via user interface, indoor fan runs at set speed.
b) If Ti1 ≥ 5ºC for 2 minutes, AUX2 is on. Indoor fan runs at set speed.
FAN MODE
a) Indoor fan runs at the set speed while heater, AUX1, AUX2, MTV1 and MTV2 are turned off.
b) Indoor fan speed can be adjusted for low, medium and high.
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HEAT MODE
Heat Mode without Electrical Heater
a) MTV1, MTV2, AUX2 and heater are always off.
b) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated, AUX1
is turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, AUX1 is turned off. Indoor fan runs at 200RPM.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
Heat Mode with Electrical Heater as Booster
a) MTV1, MTV2 and AUX2 are always off.
b) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated, AUX1
is turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, AUX1 is turned off. Indoor fan runs at 200RPM.
d) If Ti1 < 40ºC, the electrical heater is turned on. If 40 ≤ Ti1 < 45ºC, the electrical heater is kept
original state. If Ti1 ≥ 45ºC, the electrical heater is turned off.
e) The range of Ts is 16 - 30ºC.
f) Indoor fan speed can be adjusted for low, medium, high and auto.
PRE-HEAT
Pre-Heat without Electrical Heater
a) MTV1, MTV2 and AUX2 are off.
b) If Ti1 < 36ºC (or > 28ºC is selected by DIPB-S2 position SW4), AUX1 is on while indoor fan
remains off.
c) If Ti1 ≥ 38ºC (or < 30ºC is selected by DIPB-S2 position SW4), AUX1 is on while indoor fan
runs at set speed.
d) If indoor coil temperature sensor is damaged, pre-heat time is set for 2 minutes and indoor
fan runs at set speed.
Pre-Heat with Electrical Heater
a) If Indoor fan speed ≥ 300RPM, electrical heater will turned on.
POST-HEAT
Post-Heat with and without Electrical Heater
a) AUX1 is off. Electrical heater is turned off.
b) Indoor fan will turn off after the unit is turned off 20 seconds AUX1 is off.
LOW TEMPERATURE PROTECTION OF INDOOR COIL
a) If Ti1 ≤ 2ºC for 2 minutes, AUX2 is off. If indoor fan runs at low speed, it will run at medium speed. If indoor
fan runs at medium or high speed, it will run at set speed.
b) If Ti1 ≥ 5ºC for 2 minutes, AUX2 is on. Indoor fan runs at set speed.
OVER-HEAT PROTECTION OF INDOOR COIL
a) If Ti1 ≥ 75ºC, AUX1 is turned off, indoor fan remains on and runs at high speed.
b) If Ti1 < 70ºC, AUX1 is turned on, indoor fan remains and runs at set speed.
c) If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the
unit will work as the Pre-heat and Post-heat program.
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DEHUMIDIFICATION MODE
a) MTV1, MTV2, AUX1 and heater are always off.
b) If Tr ≥ 25ºC, indoor fan and AUX2 will be on for 3 minutes, and off for 4 minutes.
c) If 16ºC ≤ Tr < 25ºC, indoor fan and AUX2 will be on for 3 minutes, and off for 6 minutes.
d) If Tr < 16ºC, indoor fan and AUX2 will be turned off for 4 minutes.
e) At the end of the above dehumidification cycle, system will decide the next dehumidification
control option. Indoor fan will run at low speed throughout the dehumidification process.
AUTO-MODE
Not allowed.
D.1.6. Control Logics For 4-Pipe System
Note: unit equipped with 4x2 switching device.
COOL MODE
a) MTV2, AUX1 and heater are always off.
b) If Tr ≥ Ts + 1ºC (or + 4ºC if economy contact is activated), cool operation is activated, MTV1 and AUX2
are turned on. Indoor fan runs at set speed.
c) If Tr < Ts, cool operation is terminated, MTV1 and AUX2 are turned off. Indoor fan runs at set speed.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
f) When turned on, MTV1 requires 30 seconds before it is fully open.
g) When turned off, MTV1 requires 120 seconds before it is fully closed.
h) When the unit is turned off, indoor fan will delay for 5 seconds before it is turned off.
FAN MODE
a) Indoor fan runs at the set speed while heater, MTV1, MTV2, AUX1 and AUX2 are turned off.
b) Indoor fan speed can be adjusted for low, medium and high.
HEAT MODE
Heat Mode without Electrical Heater
a) MTV1, AUX2 and heater always off.
b) If Tr ≤ Ts﹣1ºC (or -4ºC if economy contact is activated), heat operation is activated, MTV2
and AUX1 are turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, MTV2 and AUX1 are turned off. Indoor fan runs at
200RPM.
d) The range of Ts is 16 - 30ºC.
e) Indoor fan speed can be adjusted for low, medium, high and auto.
f) MTV2 will delay for 30 seconds before it is turned on.
g) MTV2 will delay for 120 seconds before it is turned off.
Heat Mode with Electrical Heater as Booster
a) MTV1 and AUX2 are always off.
b) If Tr ≤ Ts﹣1ºC (or - 4ºC if economy contact is activated), heat operation is activated, MTV2
and AUX1 are turned on. Indoor fan runs at the set speed.
c) If Tr > Ts, heat operation is terminated, MTV2 and AUX1 are turned off. Indoor fan runs at
200RPM.
d) If Ti1 < 40ºC, the electrical heater is turned on. If 40 ≤ Ti1 < 45ºC, the electrical heater is kept
original state. If Ti1 ≥ 45ºC, the electrical heater is turned off.
e) The range of Ts is 16 - 30ºC.
f) Indoor fan speed can be adjusted for low, medium, high and auto.
g) MTV2 will delay for 30 seconds before it is turned on.
h) MTV2 will delay for 120 seconds before it is turned off.
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PRE-HEAT
Pre-heat without Electrical Heater
a) If Ti1 < 36ºC [or 28ºC depends on DIP setting], when MTV2 and AUX1 are on, Indoor fan runs
at 200RPM.
b) If Ti1 ≥ 38ºC [or 30ºC depends on DIP setting], when MTV2 and AUX1 are on, indoor fan runs
at set speed.
c) If indoor coil temperature sensor is damaged, pre-heat time is set for 2 minutes and indoor fan
runs at set speed.
Pre-heat with Electrical Heater
a) MTV2 and AUX2 turn on.
b) If Indoor fan speed ≥ 300RPM, electrical heater will turned on.
POST-HEAT
Post-heat without Electrical Heater
a) If Ti2 ≥ 38ºC, when MTV2 and AUX 1 are off, indoor fan continues to run at set speed.
b) If 36C ≤ Ti2 ≤ 38C, when MTV2 and AUX1 are off. Indoor fan keeps original state.
c) If Ti2 < 36ºC, when MTV2 and AUX1 are off. Indoor fan runs 30 seconds and stop 3 minutes
repeatedly.
d) If indoor coil temperature coil is damaged, post-heat time is set for 3 minutes with indoor fan
running at set speed.
Post-heat with Electrical Heater
a) Indoor fan runs at 200RPM after the unit off for 20 seconds.
LOW TEMPERATURE PROTECTION OF INDOOR COIL
a) If Ti1 ≤ 2ºC for 2 minutes, MTV1 and AUX2 are turned off. If indoor fan is set for low speed, it will
run at medium speed. If it is set at medium or high speed, it will keep running at the same speed.
b) If Ti1 ≥ 5ºC for 2 minutes, MTV1 and AUX2 are turned on. Indoor fun runs at set speed.
OVER HEAT PROTECTION OF INDOOR COIL
a) If Ti2 ≥ 75ºC, MTV2 and AUX1 are turned off, indoor fan remains on and runs at high speed.
b) If Ti2 < 70ºC, MTV2 and AUX1 are turned on, indoor fan remains on and runs at set speed.
c) If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the unit
will work as the Pre-heat and Post-heat set times.
DEHUMIDIFICATION MODE
a) MTV2, AUX1 and heater are always off.
b) If Tr ≥ 25ºC, MTV1 and AUX2 will be on for 3 minutes, and off for 4 minutes.
c) If 16ºC ≤ Tr < 25ºC, MTV1 and AUX2 will be on for 3 minutes, and off for 6 minutes.
d) If Tr <16ºC, MTV1 and AUX2 will be turned off for 4 minutes.
At the end of the above dehumidification cycle, system will decide the next dehumidification control option. Indoor
fan will run at low speed throughout the dehumidification process.
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AUTO-MODE
a) If current running mode is AUTO COOL mode, it will change over to AUTO HEAT mode upon satisfy all the
conditions below:
1) Ts – Tr ≥ 1.0°C (or - 4ºC if economy contact is activated).
2) MTV1 has stop ≥ 10 minutes.
b) If current running mode is AUTO HEAT mode, it will change over to AUTO COOL mode upon satisfy all the
conditions below:
1) Tr - Ts ≥ 1.0°C (or + 4ºC if economy contact is activated).
2) MTV2 has stop ≥ 10 minutes.
Note: AUTO COOL or AUTO HEAT operations are the same as COOL or HEAT mode respectively.
SLEEP MODE
a) SLEEP mode can only be set in COOL or HEAT modes.
b) In COOL mode, after SLEEP mode is set, the indoor fan will run at low speed and Ts will increase 2ºC
during 2 hours.
c) In HEAT mode, after SLEEP mode is set, the indoor fan will run at set speed and Ts will decrease
2ºC during 2 hours.
d) Changing of operation mode will cancel SLEEP mode.
The COOL mode SLEEP profile is:
Set
temperature
Ts+2.0
Ts+1.0
Ts+0.5
Ts
Sleep
on
0.5
1.0
2.0
Sleep
off
Hour
The HEAT mode sleep profile is:
Set temperature
Ts
Ts-0.5
Ts-1.0
Ts-2.0
Sleep on
0.5
1.0
2.0
Sleep
off
Hour
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D.1.7. Auto Fan Speed
a) In COOL mode, the fan speed cannot change until it has run at this speed for more than 30
seconds. Fan speed is regulated according to the profile below.
b) In HEAT mode, the fan speed cannot change until it has run at this speed for more than 30
seconds.
Tr
Ts
Ts-1C
Ts-2C
Ts-3C
Low
Low
Medium
High
Low
Medium
High
High
Tr
Medium
Low
Low
Ts+3C
Ts+2C
Ts+1C
Ts
High
Medium
Low
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D.1.8. Louver
For remote handset
Whenever indoor fan is running, louver can swing or stop at the desired position.
Louver angle: 0~100º, opens clockwise with largest angle at 100º.
Swing angle: 35~100º, opens clockwise to 68º. Below are the 4 fixed positions which can be set from
wireless LCD handset.
Position
Angle
1
35º 2 57º 3 83º 4 100º
For wired wall pad
Louver angle: 0~100º, opens clockwise, and with biggest angle at 100º.
Swing angle: 35~100º, opens clockwise to 68º. User may stop louver at any desired poison between
35~100º.
D.1.9. Buzzer
If a command is received by the air conditioner, the master unit will respond with 2 beeps for each setting,
and the slave unit will respond with 1 beep.
D.1.10. Auto Restart
The system uses non-volatile memory to save the present operation parameters when system is turned off
or in case of system failure or cessation of power supply. Operation parameters when using handset are
mode, set temperature, swing, and fan speed. When using wall pad parameters are Mode, Set Temperature,
Swing, and Fan Speed, including the 7-days Timer program are retained. When power supply resumes or
the system is switched on again, the same operations as previously set will function.
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D.1.11. Operation Of Control Panel On High-Wall Unit
D.1.11.1. On/Off Switch
a) This is a tactile switch to select COOL → HEAT → OFF operation mode.
b) In COOL mode, the set temperature of the system is 24ºC with auto fan speed and swing. There are
no timer and SLEEP modes.
c) In HEAT mode, the set temperature of the system is 24ºC with auto fan speed and swing. There are
no timer and SLEEP modes.
d) Master unit that does not use LCD wall pad will globally broadcast.
Note: When button pressing is effective, master unit buzzer will beep twice and slave unit beeps once.
D.1.11.2. Electric Heater Safety Switch (on control PCB)
Before the electrical heater is turned on, the EH safety switch must be closed. If this contact is opened
continuously ≥ 1 second, heater must be cut off immediately and report error. Once the contact is returned
to close position ≥ 60 seconds, reset the error and heater is allowed to cut in again.
Should EH safety switch be opened ≥ 3 times within 60 minutes, heater is not allowed to cut in anymore.
Turn off the unit to reset the fault provided that the switch has returned to close position.
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D.2. LED lights
For all units
Power / Operation LED light (both green)
Unit on
Operation LED On, Power LED Off
Unit in standby
Power LED On, Operation LED Off
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D.2.1. LED Indication and Error Description
For all units - Operation LED light (Green)
Error Description
Blink
Reason
Remedy
Electrical heater failure
Green LED blink 1
times, stop 3 sec
Only for unit with EH.
EH protection
switches is opened.
1. Change fan speed to high.
2. Replace the damaged protection
switch of EH.
Indoor coil sensor 2
failure
Green LED blink 2
times, stop 3 sec
Ti2 sensor unplugged
or damaged.
1. Check Ti2 plug is connected or
not.
2. Check sensor’s resistance is
correct or not.
Return air sensor failure
Green LED blink 3
times, stop 3 sec
Room sensor
unplugged or
damaged.
1. Check Tr plug is connected or not.
2. Check sensor’s resistance is
correct or not.
Indoor coil sensor 1
failure
Green LED blink 4
times, stop 3 sec
Ti1 sensor unplugged
or damaged.
1. Check Ti1 plug is connected or
not.
2. Check sensor’s resistance is
correct or not.
Indoor coil low
temperature protection
Green LED blink 5
times, stop 3 sec
Water temperature is
lower than 3 ºC.
Check the water temperature.
Indoor coil over heat
protection
Green LED blink 6
times, stop 3 sec
Water temperature is
higher than 70 ºC.
Check the water temperature
EC motor failure
Green LED blink 9
times, stop 3 sec
No EC motor
feedback
1. Check DIPB-SW5 and SW6
setting.
2. Check the EC motor.
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D.2.2. LED indication on Master/Slave connection
For master unit indicating defect status of all slave units. Error message can be found in LED lights on
master unit.
Master unit Protection LED light (Red)
Unit No.
Blink
Remedy
Unit 2 failure
RED LED blink 2 times, stop 3 sec
Check unit 2 communication plug and fix it
Unit 3 failure
RED LED blink 3 times, stop 3 sec
Check unit 3 communication plug and fix it
Unit 4 failure
RED LED blink 4 times, stop 3 sec
Check unit 4 communication plug and fix it
Unit 5 failure
RED LED blink 5 times, stop 3 sec
Check unit 5 communication plug and fix it
Unit 6 failure
RED LED blink 6 times, stop 3 sec
Check unit 6 communication plug and fix it
Unit 7 failure
RED LED blink 7 times, stop 3 sec
Check unit 7 communication plug and fix it
Unit 8 failure
RED LED blink 8 times, stop 3 sec
Check unit 8 communication plug and fix it
Unit 9 failure
RED LED blink 9 times, stop 3 sec
Check unit 9 communication plug and fix it
Unit 10 failure
RED LED blink 10 times, stop 3 sec
Check unit 10 communication plug and fix it
Unit 11 failure
RED LED blink 11 times, stop 3 sec
Check unit 11 communication plug and fix it
Unit 12 failure
RED LED blink 12 times, stop 3 sec
Check unit 12 communication plug and fix it
Unit 13 failure
RED LED blink 13 times, stop 3 sec
Check unit 13 communication plug and fix it
Unit 14 failure
RED LED blink 14 times, stop 3 sec
Check unit 14 communication plug and fix it
Unit 15 failure
RED LED blink 15 times, stop 3 sec
Check unit 15 communication plug and fix it
Unit 16 failure
RED LED blink 16 times, stop 3 sec
Check unit 16 communication plug and fix it
Unit 17 failure
RED LED blink 17 times, stop 3 sec
Check unit 17 communication plug and fix it
Unit 18 failure
RED LED blink 18 times, stop 3 sec
Check unit 18 communication plug and fix it
Unit 19 failure
RED LED blink 19 times, stop 3 sec
Check unit 19 communication plug and fix it
Unit 20 failure
RED LED blink 20 times, stop 3 sec
Check unit 20 communication plug and fix it
Unit 21 failure
RED LED blink 21 times, stop 3 sec
Check unit 21 communication plug and fix it
Unit 22 failure
RED LED blink 22 times, stop 3 sec
Check unit 22 communication plug and fix it
Unit 23 failure
RED LED blink 23 times, stop 3 sec
Check unit 23 communication plug and fix it
Unit 24 failure
RED LED blink 24 times, stop 3 sec
Check unit 24 communication plug and fix it
Unit 25 failure
RED LED blink 25 times, stop 3 sec
Check unit 25 communication plug and fix it
Unit 26 failure
RED LED blink 26 times, stop 3 sec
Check unit 26 communication plug and fix it
Unit 27 failure
RED LED blink 27 times, stop 3 sec
Check unit 27 communication plug and fix it
Unit 28 failure
RED LED blink 28 times, stop 3 sec
Check unit 28 communication plug and fix it
Unit 29 failure
RED LED blink 29 times, stop 3 sec
Check unit 29 communication plug and fix it
Unit 30 failure
RED LED blink 30 times, stop 3 sec
Check unit 30 communication plug and fix it
Unit 31 failure
RED LED blink 31 times, stop 3 sec
Check unit 31 communication plug and fix it
Unit 32 failure
RED LED blink 32 times, stop 3 sec
Check unit 32 communication plug and fix it
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D.3. Networking System
D.3.1. Master-Slave Network
The control PCB can be set either as a master unit or slave unit.
MASTER UNIT FUNCTION
a) The master unit sends data on its setting to the slave unit.
b) The master unit settings are Unit ON/OFF, Mode, Fan Speed, Timer, Clock, Set Temperature, Swing
Function, and Sleep Function for handset operation.
c) The master unit settings are Unit ON/OFF, Mode, Fan Speed, Timer, Clock, Set Temperature, Swing
Function, and Sleep Function for wall pad operation.
SLAVE UNIT FUNCTION
a) The slave unit receives data on its settings from the master unit.
b) The slave unit is allowed to change to a locally desired setting by local controller as long as there are
no subsequent changes to the settings of the master unit.
c) The slave units can be set individually for timer on and off function by handset or wall pad. The
handset cannot override wall pad timer and clock setting.
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D.3.2. Master – Slave Network Setup
1) Disconnect the communication plug from the SK-NCSWC-001
2) Communication plug
A, B, A, B is printed on the main PCB. When you connect the wires, please ensure
connection of A to A and B to B.
3) Connection wire
3.1) If the total length of wire is more than 1000m, please use shielded wire in order to protect
the signal transmission.
3.2) Complete wire connection
First unit
Middle unit
Last unit
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3.3) Wire connection check
3.3.1) After wire connection complete, please check the wire colour is correspondence.
3.3.2) Check the wire contact by using a multimeter.
3.3.3) Check 1 and 2, 3 and 4, 5 and 6 to be sure connections correct.
3.3.4) If the resistance between two wire contacts is too high, please check and reconnect the
wire contacts.
1st
contact
2nd
contact
3rd
contact
4th
contact
5th
contact
6th
contact
First unit
Middle unit
Last unit
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4) Reconnect the communication plug to control box
Using Remote Control Handset to Set Master Control Unit:
a) Connect all the units PCBs according to the wire color and type of connector.
b) Select the master unit by setting DIPA-S1 SW6 to ON (=1) in the PCB.
c) Ensure the DIPA-S1 SW6 is set to OFF (=0) in the PCB on each slave unit.
d) Switch on the units by connecting the main power supply.
e) Using handset set the operation parameters for the Master unit which will automatically send the
settings to the slave unit when pressing the “Network” button for 3 seconds.
f) Master unit will beep twice confirming receipt of commands while Slave unit will beep once.
Using Wall pad to Set Master Control Unit:
a) Connect all the units PCBs according to the wire color and type of connector.
b) Select the master unit by setting DIPA-S1 SW6 to ON (=1) in the PCB.
c) Ensure the DIPA-S1 SW6 is set to OFF (=0) in the PCB on each slave unit.
d) Provide each slave unit an addressable code by configuring SW1 – SW5 of DIPA-S1 according to
the DIP switch setting table.
e) Switch on the units by connecting the main power supply.
f) Using the wall pad set the operation parameters for the Master unit which will send the setting to the
slave units based on Global-control communication or Addressable communication methods.
g) Master unit will beep twice confirming receipt of commands while Slave unit will beep once.
MASTER-SLAVE CONTROL
The control PCB can receive data from both wireless LCD handset and wired wall pad.
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D.3.3. Master-Slave Communication Method
There are two modes for Master-slave structure.
Global Control communication
Master will broadcast the settings to all slave units. During normal operation, slave units can receive
commands from its wireless handset and wall pad control panel. Upon reception of master global
commands, all slave unit settings will be replaced by the master settings.
Addressable communication
Master controller must be LCD wall pad. Slave unit parameters are set as usual. Upon receiving the
control commands from a master, the addressed slave unit settings will be replaced by the master
settings.
DIPA-S1 address setting: ON=1, OFF=0.
DIPA-S1
SW6
DIPA-S1
SW5
DIPA-S1
SW4
DIPA-S1
SW3
DIPA-S1
SW2
DIPA-S1
SW1
Unit No.
Remark
1 0 0 0 0 0 01
Master
0 0 0 0 0 1 02
Slave
0 0 0 0 1 0 03
Slave 0 0 0 0 1 1
04
Slave 0 0 0 1 0 0
05
Slave 0 0 0 1 0 1
06
Slave 0 0 0 1 1 0
07
Slave 0 0 0 1 1 1
08
Slave 0 0 1 0 0 0
09
Slave 0 0 1 0 0 1
10
Slave 0 0 1 0 1 0
11
Slave 0 0 1 0 1 1
12
Slave 0 0 1 1 0 0
13
Slave 0 0 1 1 0 1
14
Slave 0 0 1 1 1 0
15
Slave 0 0 1 1 1 1
16
Slave 0 1 0 0 0 0
17
Slave 0 1 0 0 0 1
18
Slave 0 1 0 0 1 0
19
Slave 0 1 0 0 1 1
20
Slave 0 1 0 1 0 0
21
Slave 0 1 0 1 0 1
22
Slave 0 1 0 1 1 0
23
Slave 0 1 0 1 1 1
24
Slave 0 1 1 0 0 0
25
Slave 0 1 1 0 0 1
26
Slave 0 1 1 0 1 0
27
Slave 0 1 1 0 1 1
28
Slave 0 1 1 1 0 0
29
Slave 0 1 1 1 0 1
30
Slave 0 1 1 1 1 0
31
Slave 0 1 1 1 1 1
32
Slave
If master unit is equipped with wireless handset only, it can only use Global-Control communication
method. If it is equipped with wall pad, it can use both communication methods.
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D.3.4. Unit Network Wiring Scheme
Wiring diagram for a master-slave network connection
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D.4. SK-NCSWC-002 Limited function FCU Controller
Used in all High-wall [V/P] ~W unit configurations.
Ti1 = Chilled water coil temperature (10K)
D.4.1. Definition of Input/Output
I/O
Code
2-Pipe
Analogue Input
Chilled water Sensor
AI1
Coil sensor
Power input
R1
Lo
230 Voltage input (NO). If any speed is powered, the
unit is turned on. If no speed receives power, the unit
is turned off.
R 2
Med
R 3
Hi
Power input
Phase
L
Power supply to the PCB and all the loads connected
to the voltage outputs. Max length: 5 m.
Neutral
N
Power supply to the PCB and all the loads connected
to the voltage outputs. Max length: 5 m.
Earth
GND
Power supply to the PCB and all the loads connected
to the voltage outputs. Max length: 5 m.
Digital input
Wired wall pad
TTL
Change EC motor rpm
Signal input
AUTO SIGNAL
Auto
230V 50HZ, auto signal on, unit is turned on
0 to+5VDC
(0~10VDC)
Signal
0 to +5VDC，SW1=0
(0~10VDC, SW1=1)
Motor output
EC motor
CN3
Output
Stepping motor
CN1-2
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D.4.2. Wiring diagram SK-NCSWC-002
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D.4.3. Onboard configuration
There is 1 DIP switch set on the PCB:
DIPB (4 positions)
SW1: configured for different modulating signal
SW2 – SW4: brushless DC fan motor configuration.
Code
State
Description
SW1
0
PCB configured for 0~5VDC modulating signal input.
1
PCB configured for 0~10VDC modulating signal input.
MODEL
SW2
SW3
SW4
hi
Med
Low
SWC-04
0 0 0
700
600
500
SWC-06
0 0 1
900
700
600
SWC-12
0 1 0
900
700
600
SWC-15
0 1 1
1100
800
700
SWC-18
1 0 0
1300
1100
900
SWC-20
1 0 1
1100
900
800
SWC-24
1 1 0
1350
1200
900
Default RPM
1 1 1
Set by customer requirement
D.4.4. Control Logics
1. Power On Setting
Any speed is powered, the unit is turned on. When all of relays are off, the unit is turned off.
2. Swing / Louver
When the unit is turned on, the louver will restore to the largest angle at 100º, then open to the
operating angle at 87 º. When the unit is turned off, the louver will close.
3. Signal Input
When Auto speed is turned ON, the unit is turned on and the motor runs at 200 RPM. EC motor
RPM will be changed by the signal voltage.
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D.4.5. LED Indication
For all units
Power / Operation LED light (both green)
Unit on
Operation LED On, Power LED Off
Unit in standby
Power LED On, Operation LED Off
D.4.6. Error Description
For all units - Operation LED light (Green)
Item
Blink
Reason
Remedy
Indoor coil sensor 1
failure
Green LED blink 4
times, stop 3 sec
Ti1 sensor connection is not
good or damaged.
1. Check Ti1 plug is good or not.
2.Check sensor’s resistor is good or not.
EC motor failure
Green LED blink 9
times, stop 3 sec
No EC motor feedback
1.Check EC motor’s wires connector.
2.Check the EC motor
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D.5. Open Modbus protocol
Transfer Mode: RTU, BAUD Rate: 9600bps, 8 data bit, 1 stop bit, None parity bit
The communications require a delay between reading an answer and sending the next command
of 80ms. All temperature is equal to reading data*10 accuracy: 0.1 degree C.
Supported Functions:
Function Code
Function Description
01(01H)
Read Coils
02(02H)
Read Discrete Inputs
03(03H)
Read Holding Registers
04(04H)
Read Input Registers
05(05H)
Write Single Coil
06(06H)
Write Single Register
15(0FH)
Write Multiple Coils
16(10H)
Write Multiple Registers
255(FFH)
Extended Commands which is used to test
Valid Error code table:
Error code
Description
Definition
01 (01H)
Invalid commands
Received commands beyond valid
commands
02 (02H)
Invalid data address
Data addresses beyond valid data address
03 (03H)
Invalid data
Data beyond definition range
04 (04H)
Write data not succeed
Write data not succeed
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Coils table:
Description
Address
Type*
Remark
Unit ON/OFF
100000
R/W
Sleep mode
100001
R/W
Louver swing
100002
R/W
Reserved
100003
Reserved
100004
Reserved
100005
Reserved
100006
Reserved
100007
Reserved
100008
Reserved
100009
Reserved
100010
Reserved
100011
Reserved
100012
Reserved
100013
Reserved
100014
Reserved
100015
* R = read only, W = write only, R/W = read and write.
Discrete table:
Description
Address
Type*
Remark
MTV1
200000
R MTV2
200001
R AUX1
200002
R AUX2
200003
R Condensate pump
200004
R Electrical heater
200005
R Wired wall pad
200006
R PRO
200007
R Float switch
200008
R Reserved
200009
R EH protection switch
200010
R
Internal actually
running and unit
Unit ON/OFF
200011
R
Testing purpose only.
* R = read only, W = write only, R/W = read and write.
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Holding Register table:
Description
Address
Type*
Remark
Mode setting
300000
R/W
Cooling mode = 01(H)
Humidify mode = 02(H)
Fan mode = 04(H)
Heating mode = 08(H)
Auto mode = 10(H)
Fan speed setting
300001
R/W
Low speed = 04(H)
Medium speed = 02(H)
High speed = 01(H)
Auto fan speed = 07(H)
Louver swing setting
300002
R/W
Position 1 = 01(H)
Position 2 = 02(H)
Position 3 = 03(H)
Position 4 = 04(H)
Auto = 0F(H)
Stop = 00(H)
Setting temperature
300003
R/W
16~30 degree C (actual*10
format)
Address setting
300004
R
Set by dip-switch, reading only
Reset
300005
W
=0x33 reset error
Week
300006
W
Calibration wired wall pad and
set timer function
Hour
300007
W
Calibration wired wall pad and
set timer function
Minute
300008
W
Calibration wired wall pad and
set timer function
Second
300009
W
Calibration wired wall pad and
set timer function
Hours in Timer on
300010
R/W
Timer ON
Minute in Timer on
300011
R/W
Timer ON
Hours in Timer off
300012
R/W
Timer OFF
Minute in Timer off
300013
R/W
Timer OFF
Icon of Timer ON or
OFF
300014
R/W
BIT0 = Icon of Timer ON
BIT1 = Icon of Timer OFF
1 = enable
0 = disable
Super low speed rpm
310000
R/W
200~1500
Low speed rpm
310001
R/W
200~1500
Medium speed rpm
310002
R/W
200~1500
High speed rpm
310003
R/W
200~1500
RPM setting
310004
R/W
0~2000 (used to test，0 =
disable)
Temperature sampling
time
310005
R/W
2~100, default:5S
Factor of auto fan speed
310006
R/W
2~150, default:20
Factor of modulating
valve
310007
R/W
2~250, default:150
* R = read only, W = write only, R/W = read and write.
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Input Register table:
Description
Address
Type*
Remark
Dip switch 1 status
400000
R Dip switch 2 status
400001
R
Room temperature
sensor
400002
R
Ti1 temperature
sensor
400003
R
Ti2 temperature
sensor
400004
R
Error code
400005
R
Bit0 = Room temperature sensor error
Bit1 = Ti1 temperature sensor error
Bit2 = Ti2 temperature sensor error
Bit3 = Float switch error
Bit4 = Indoor coil low temperature
protection
Bit5 = Indoor coil over heat protection
Bit6 = Reserved
Bit7 = Electrical heater failure
Bit8 = Motor1 Error
Bit9 = Motor2 Error
Bit10 = System parameters error
Bit11 = Reserved
Bit12 = Reserved
Bit13 = Reserved
Bit14 = Reserved
Bit15 = Reserved
Fan speed status
400006
R
Low = 04(H)
Medium = 02(H)
High = 01(H)
Mode status
400007
R
Cooling mode = 01(H)
Dehumidify mode = 02(H)
Fan mode = 04(H)
Heating = 08(H)
Setting temperature
status
400008
R
Testing only
Room temperature in
wall pad status
400009
R
Room temperature in
main PCB status
400010
R
Unit type
400011
R
4-pipe = 03, 2-pipe = 02
This setting is configured by dip switch
EC motor 1# RPM
400012
R EC motor 2# RPM
400013
R
* R = read only, W = write only, R/W = read and write.
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E. Users Interface
E.1. Remote Control Handset
Attention
When unit with handset is master, settings are
automatically sent to slaves;
Auto Cool-Heat operation will be applicable in 4pipe system only.
Use “Swing" is not applicable
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E.2. Wired Wall Pad
E.2.1. Wall Pad Display
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E.2.2. Wall Pad Operation Guidelines
a) Clock display and setting
System has an accurate internal real time clock used for time indication and timer ON/OFF function. Real time
clock display area indicates internal time clock which can be set by
TIME
or
TIME
button.
b) Day display and setting
The wall pad has day display function which is used for day indication and timer ON/OFF function. Day display
icon indicates current day. Press
DAY
button to set day.
c) Timer ON/OFF setting
If master unit is in global control mode and ON/OFF timer setting is reached, master unit will command the whole
network to be on or off. Otherwise timer ON/OFF is effective to the local unit only. The system supports 7 days
ON/OFF timer setting.
Press
TIMER
button once, and ON symbol blinking indicates ON timer programming mode, day
display area indicates the day for setting timer on. If on timer for this day is null, timer display area shows
, otherwise the ON timer setting will be shown. Press
TIME
or
TIME
button to change the ON timer
setting. Press
CANCEL
key to cancel the current ON timer selected and the timer display area will show
. Press
DAY
button to change the day the ON timer is to be programmed.
Press
TIMER
button again, and
OFF
symbol blinking indicates OFF timer programming mode. The
setting method is the same as ON timer setting above.
Press
TIMER
button again, to exit timer ON/OFF setting function.
Should there be any on or off timer being programmed, will light up. Should there be any unexecuted
ON or OFF timer for the current day, its corresponding ON or
OFF
icon will light up.
Hold down
CANCEL
button for 3 seconds to cancel all timer settings.
d) Timer set by master unit is as follows:
Press
NET
button to enter into networking control mode. Unit area blinking indicates the slave unit under
control. Press
TIME
or
TIME
to select the desired slave unit. Units that are off will be skipped automatically.
Press
TIMER
button once to enter into ON timer programming mode. Press
DAY
button to select the
required day of the week. Master unit will then retrieve the setting from the selected slave unit and timer
display area will show “rEAd”. The ON timer setting will be shown upon reading the data successfully. Press
TIME
or
TIME
button to change the ON timer setting.
Press
TIMER
button again to enter into OFF timer programming mode. Press
DAY
button to select the
required day of the week. Master unit will then retrieve the setting from the selected slave unit and timer
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display area will show “rEAd”. The OFF timer setting will be shown upon reading the data successfully.
Press
TIME
or
TIME
button to change the OFF timer setting.
Upon completion of changing timer settings for the selected day, press
TIMER
button again to exit timer
programming mode. The settings will then upload to the selected slave unit. The next day of the week
settings can be done only upon completion of sending data to the slave units. (Repeat steps 1~4 if setting is
required for the next day of the week).
In Global control mode:
Pressing Master
CANCEL
button for 3 seconds will cancel all timer settings in all slave units.
Timer settings will be broadcast to all slave units.
e) Clock synchronization by master unit is as follows:
Press
TIME
and
TIME
buttons for 3 seconds to activate clock synchronization to all slave units. Master wall pad
will respond with a beeping sound.
f) Key lock
In order to prevent unauthorized access to the system setting, a key lock function is provided to prevent mischief.
Hold down and for 3 seconds to activate key lock, symbol lights up. Repeat the same to exit key
lock. Only button is applicable in key lock mode.
g) Swing
No applicable
h) Sleep
Press
SLEEP
button to activate or deactivate sleep setting. Sleep is valid in cool or heat mode only.
i) Temperature setting
Press or to enter into temperature setting mode, temperature display area blinks indicating the current
set temperature. Press the above buttons to adjust the set temperature.
j) Mode setting
Press button to change the operation mode.
k) Fan speed setting
Press
FAN
button to change the fan speed. Only low speed is available for dehumidification mode.
l) ON/OFF control
Press to start or stop the air conditioner.
m) Networking Master - Slave Control (only master unit wall pad can control other units on the network)
MODE
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Press
NET
button to enter into networking control mode. Unit area blinking indicates the slave unit under
control. Press
TIME
or
TIME
to select the desired slave unit; Units that are off will be bypassed automatically.
Parameters that can be controlled are ON/OFF, Timer Weekly Program, Set Temperature, Mode, Fan Speed,
Swing and Sleep. Parameter operation methods are the same as above. Press
NET
button again to exit
networking control mode.
Hold down
SWING
and
FRESH
buttons for 3 seconds to enter into global control mode, lights up. Repeat
the same to exit global control mode. In global control mode, the settings of the master unit will be broadcast
to all the slave units.
n) Unit operation parameters browsing
Hold down
CANCEL
and
FAN
buttons for 3 seconds to enter into operation parameters browsing mode. Unit
display area shows the slave unit under browsing. Slave unit selection method is the same as in networking
control above. Press
HUMIDIFY
or
HUMIDIFY
to browse various parameters as follow:
Wall pad display temperature area
Wall pad display time area
C0
Return air temperature displayed
C1
Indoor coil temperature displayed
C2
DIP switch setting displayed
C3
Indoor coil 2 temperature
Press
CANCEL
button to exit.
o) Error indication
When faulty slave unit is detected, Master unit display area shows the faulty unit address, time area shows the
error code and wall pad backlight changes to red color. Should there be multiple units having problems,
addresses and error codes will be shown one after another.
Error code definition:
Error
Error code
Electrical heater faulty
E1
Indoor coil sensor 2 faulty
E2
Return air sensor faulty
E3
Indoor coil sensor 1 faulty
E4
Indoor coil low temperature protection
E5
Indoor coil over heat protection
E6
Float switch alarm
E7
Local communication error
E8
For system without master-slave settings, wall pad will indicate unit error codes as above.
Page 63 of 67
SK2013-SON-002-TechMnl-SWC-002
E.2.3. EC unit RPM setting
1) Turn Off the unit.
2) Open wall pad’s back cover, two DIP switches are appeared.
3) Turn the DIP switch 1 to “ON” position.
4) Wired wall pad LED will be shown as following;
5) After finish the RPM setting, turn the DIP switch 1 to “OFF” position. The Wired wall pad display will resume normal.
This is the motor RPM setting.
Press TEMP. + / - button to increase the
RPM setting by 10RPM step.
This is the speed level setting.
d0 means low speed
d1 means medium speed
d2 means high speed
Press PARAMETER + / - button to select.
Page 64 of 67
SK2013-SON-002-TechMnl-SWC-002
E.3. Sensor Resistance R-T Conversion Table
Resistance: R (25°C) = 10KΩ±1%
Beta Constant: B (25/ 85) = 528K±1%
T
Rmin
Rnom
Rmax
T
Rmin
Rnom
Rmax
(KΩ)
(KΩ)
(KΩ)
(KΩ)
(KΩ)
(KΩ)
-30
174
182.7
191.8
4
26.11
26.9
27.71
-29
163.4
171.5
179.9
5
24.85
25.59
26.34
-28
153.6
161.1
168.9
6
23.65
24.35
25.05
-27
144.4
151.3
158.5
7
22.52
23.17
23.83
-26
135.8
142.2
148.9
8
21.45
22.06
22.68
-25
127.8
133.8
140
9
20.44
21.01
21.59
-24
120.3
125.8
131.6
10
19.48
20.02
20.55
-23
113.3
118.4
123.8
11
18.58
19.7
19.58
-22
106.7
111.5
116.5
12
17.71
18.18
18.65
-21
100.6
105.1
109.7
13
16.9
17.33
17.77
-20
94.9
99.03
103.3
14
16.12
16.53
16.94
-19
89.51
93.39
97.41
15
15.39
15.77
16.16
-18
84.5
88.11
91.85
16
14.69
15.05
15.41
-17
79.8
83.17
86.64
17
14.03
14.37
14.7
-16
75.39
78.53
81.76
18
13.41
13.72
14.03
-15
71.26
74.18
77.19
19
12.81
13.1
13.4
-14
67.37
70.1
72.9
20
12.24
12.52
12.79
-13
63.73
66.26
68.88
21
11.7
11.96
12.22
-12
60.3
62.67
65.1
22
11.19
11.43
11.67
-11
57.08
59.28
61.55
23
10.71
10.93
11.15
-10
54.05
56.1
58.22
24
10.24
10.45
10.66
-9
51.19
53.12
55.08
25
9.8
10
10.2
-8
48.51
50.3
52.14
26
9.374
9.57
9.765
-7
45.98
47.66
49.37
27
8.969
9.16
9.351
-6
43.61
45.17
46.77
28
8.584
8.77
8.957
-5
41.36
42.82
44.31
29
8.218
8.4
8.582
-4
39.25
40.61
42
30
7.869
8.047
8.225
-3
37.26
38.53
39.83
31
7.537
7.71
7.885
-2
35.38
36.56
37.78
32
7.221
7.39
7.56
-1
33.6
34.71
35.85
33
6.92
7.085
7.251
0
31.93
32.97
3402
34
6.633
6.794
6.956
1
30.35
31.32
32.3
35
6.36
6.517
6.675
2
28.85
29.76
30.68
36
6.099
6.252
6.407
3
27.44
28.29
29.15
37
5.85
6
6.151
Page 65 of 67
SK2013-SON-002-TechMnl-SWC-002
T
Rmin
Rnom
Rmax
T
Rmin
Rnom
Rmax
(KΩ)
(KΩ)
(KΩ)
(KΩ)
(KΩ)
(KΩ)
38
5.614
5.759
5.907
75
1.417
1.474
1.532
39
5.387
5.53
5.673
76
1.37
1.426
1.482
40
5.172
5.31
5.451
77
1.326
1.379
1.434
41
4.966
5.101
5.238
78
1.282
1.335
1.389
42
4.769
4.901
5.034
79
1.241
1.292
1.344
43
4.582
4.71
4.84
80
1.201
1.25
1.302
44
4.402
4.527
4.654
81
1.162
1.211
1.261
45
4.231
4.353
4.477
82
1.125
1.172
1.221
46
4.067
4.186
4.307
83
1.089
1.135
1.183
47
3.911
4.027
4.144
84
1.055
1.1
1.146
48
3.761
3.874
3.989
85
1.021
1.065
1.111
49
3.618
3.728
3.84
86
0.9891
1.032
1.077
50
3.481
3.588
3.697
87
0.9582
1
1.044
51
3.35
3.454
3.561
88
0.9284
0.9697
1.012
52
3.225
3.326
3.43
89
0.8998
0.9401
0.9818
53
3.105
3.204
3.305
90
0.8721
0.9115
0.9522
54
2.99
3.086
3.185
91
0.8455
0.8839
0.9237
55
2.88
2.974
3.07
92
0.8198
0.8573
0.8961
56
2.774
2.866
2.959
93
0.795
0.8316
0.8696
57
2.673
2.762
2.854
94
0.7711
0.8069
0.8439
58
2.576
2.663
2.752
95
0.748
0.783
0.8192
59
2.483
2.568
2.655
96
0.7258
0.7599
0.7953
60
2.394
2.477
2.562
97
0.7043
0.7376
0.7722
61
2.309
2.39
2.472
98
0.6836
0.7161
0.7499
62
2.227
2.306
2.386
99
0.6635
0.6953
0.7283
63
2.149
2.225
2.304
100
0.6442
0.6752
0.7075
64
2.073
2.148
2.224
101
0.6255
0.6558
0.6874
65
2.001
2.074
2.148
102
0.6075
0.6371
0.6679
66
1.931
2.002
2.075
103
0.59
0.619
0.6491
67
1.865
1.934
2.005
104
0.5732
0.6015
0.631
68
1.801
1.868
1.937
105
0.5569
0.5846
0.6134
69
1.739
1.805
1.872
70
1.68
1.744
1.81
71
1.623
1.686
1.75
72
1.569
1.63
1.692
73
1.516
1.576
1.637
74
1.466
1.524
1.583
Page 66 of 67
SK2013-SON-002-TechMnl-SWC-002
E.4.
Troubleshooting Guide
The fan coil does not
start up
No voltage
- Check for presence of voltage
- Check fuse on board
Mains switch in the “OFF position
- Place in the “ON” position
Faulty room control
- Check the room control
Faulty fan
- Check fan motor
Insufficient output
Filter clogged
- Clean the filter
Air flow obstructed
- Remove obstacles
Room control regulation
- Check the room air sensor
Incorrect water temperature
- Check the water source
Noise and vibrations
Contact between metal parts
- Check for loosening parts
Loose screws - Tighten screws
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