Product Overview
The modular chiller adopts a modular design. Multiple independent refrigeration units can be freely combined for flexible capacity adjustment and later expansion. Featuring redundant operation, the failure or maintenance of a single module will not interrupt the cooling supply of the whole system for high reliability. It delivers excellent efficiency under part-load conditions. The intelligent control system automatically starts and stops modules according to actual load to save energy. Compact single modules enable easy transportation and on-site installation. Equipped with standard communication interfaces, the unit can connect to the building management system with simple maintenance, widely used in commercial complexes, hospitals, factories and other building air conditioning projects.
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| AKQWRF65M/SN11-H - 65 kW Base Module | AKQWRF130M/SN11-H - 130 kW Base Module |
Applications and System Benefits
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| Transportation Hubs and Large Public Buildings | Commercial Complexes and High-End Interiors |
The chiller is suitable for new-build and retrofit projects where installation convenience, low noise, dependable winter heating and flexible capacity expansion are important. Because the system rejects or absorbs heat directly through outdoor air, no cooling tower is required.
· Hotels, restaurants and serviced apartments
· Office buildings and commercial complexes
· Shopping centers, supermarkets and theaters
· Hospitals, schools and laboratories
· Factories, workshops and industrial facilities
· Airports, railway stations and transportation hubs
Hydronic Comfort: Water-based air conditioning provides gentle airflow, large air volume and more uniform indoor temperature. Compared with many direct-expansion systems, it can reduce excessive dehumidification and improve comfort in occupied spaces.
Overall Design and Operating Range
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Practical Cabinet and Service Design The cabinet integrates a central partition and independent heat-exchanger arrangement for smoother capacity regulation and improved system reliability.
Ergonomic access panels, high-strength structural columns, reserved forklift pockets and lifting holes simplify transport, installation and maintenance.
· Fully enclosed cabinet and optimized airflow for lower sound levels
· 900 mm large-diameter fan wheel
· Taller cabinet design to reduce floor-space demand
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High-Efficiency Core Components
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Hermetic Scroll Compressor The hermetic scroll compressor uses a floating scroll seal to reduce friction, resistance and wear. A low-pressure chamber improves motor cooling, while a high suction inlet helps reduce liquid-slugging risk.
A discharge check valve helps prevent refrigerant backflow. Integrated motor protection supports overheat, overload, phase-loss and reverse-phase protection.
· High reliability under changing temperature and pressure conditions
· Low vibration and low operating sound
· Long service life and stable performance
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Energy-Efficient Operation The 65 kW and 130 kW modules achieve nominal cooling COP values of 3.33 and 3.32 respectively. The brochure compares these figures with conventional modular units rated at 3.19.
The stated IPLV(C) is 3.90 for the 65 kW model and 3.95 for the 130 kW model.
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High-Efficiency Heat Exchange System
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| U-Shaped Air-Side Heat Exchanger | Shell-and-Tube Water-Side Heat Exchanger |
Air-Side Heat Exchanger:
Through CFD simulation and optimized engineering design, Airko improves copper tube arrangement, fin structure, and airflow distribution to achieve higher heat exchange efficiency. The application of internally grooved copper tubes and hydrophilic aluminum fins enhances thermal performance, improves cooling efficiency, and enables smoother, cleaner defrosting operation during low-temperature winter conditions.
Water-Side Heat Exchanger:
Featuring a high-efficiency helical baffle shell-and-tube design, the water-side heat exchanger creates a more uniform flow path and maximizes heat transfer performance. Compared with traditional shell-and-tube structures, this optimized design delivers over 15% higher heat transfer efficiency. The curved water flow pattern helps reduce stagnant areas, improve circulation, and minimize the risk of scale buildup for long-term stable operation.
Enhanced System Performance:
By integrating optimized air-side and water-side heat exchanger technologies, the complete heat exchange system achieves approximately 12% higher heat transfer efficiency compared with the previous generation. This advanced design ensures improved energy efficiency, reliable operation, and superior performance for commercial and industrial HVAC applications.
Large Fan and Precision Refrigerant Control
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| 900 mm Large-Diameter Axial Fan | CFD-Optimized Fan Blade |
The 900 mm fan wheel increases circulating air volume. CFD optimization improves airflow organization, reduces recirculation and lowers aerodynamic noise. The external-rotor motor is designed for high efficiency, low heat generation, stable operation and long service life.
500-step electronic expansion-valve control
The electronic expansion valve regulates refrigerant flow accurately under changing ambient and water-temperature conditions. It provides a broad adjustment range, fast response and high control precision to maintain stable system operation.
Intelligent Variable-Cycle Defrost
High-precision sensors monitor operating conditions and frost formation. The controller changes the defrost interval and defrost duration according to actual humidity and frost conditions, helping reduce water-temperature fluctuation and maintain more stable heating output.
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High Humidity Prompt defrost when frost forms quickly
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Low Humidity Longer intervals and fewer unnecessary cycles
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Circuit Rotation Circuit A and Circuit B defrost alternately
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Module Rotation Parallel modules defrost in stages
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Stable Heating Other circuits continue operating
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Lower Fluctuation Reduced leaving-water temperature variation
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Modular Design and Compact Footprint
Base modules of 65 kW and 130 kW can be combined freely. Up to 16 units can be connected in parallel, providing a total system capacity range from 65 kW to 2,080 kW.
The U-shaped heat exchanger and taller cabinet reduce the required ground area. For the 130 kW module, the source brochure states that the single-module footprint is approximately 29% smaller than a conventional modular chiller design.
Rotation, Backup and Capacity Adjustment
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Balanced Runtime Management: Enhanced System Reliability with Backup Function: With intelligent operation control and reliable backup capability, Airko modular systems deliver stable performance, improved durability, and greater energy efficiency for commercial and industrial HVAC applications.
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Intelligent Control and System Linkage
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Centralized Multi-Module Control One wired controller can manage 1 to 16 parallel modules and display real-time operating status. The microprocessor performs automatic control, monitoring, fault diagnosis and coordinated capacity adjustment.
· Automatic restart and operating-state memory after power failure
· Timer-based start and stop functions
· User, Service and Factory password levels
· Water-pump, dry-contact and auxiliary heat-source linkage
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Technical Specifications
| Model | Unit | AKQWRF65M/SN11-H | AKQWRF130M/SN11-H |
| Cooling capacity |
kW
|
65
|
130
|
| Heating capacity |
kW
|
72
|
143
|
| IPLV(C) |
W/W
|
3.90
|
3.95
|
| Cooling input power |
kW
|
19.52
|
39.16
|
| Cooling COP |
W/W
|
3.33
|
3.32
|
| Cooling current |
A
|
36.50
|
74.55
|
| Heating input power |
kW
|
20.60
|
41.00
|
| Heating COP |
W/W
|
3.50
|
3.49
|
| Heating current |
A
|
38.30
|
76.47
|
| Maximum input power |
kW
|
29.7
|
59.5
|
| Maximum operating current |
A
|
54.5
|
109
|
| Power supply |
-
|
380 V, 3N~, 50 Hz
|
380 V, 3N~, 50 Hz
|
| Compressor quantity |
pcs
|
1
|
2
|
| Refrigerant |
-
|
R410A
|
R410A
|
| Refrigerant charge |
kg
|
8.5
|
8.0 × 2
|
| Water flow rate |
m³/h
|
11.2
|
22.4
|
| Water pressure drop |
kPa
|
48
|
60
|
| Maximum water-side pressure |
MPa
|
1.0
|
1.0
|
| Water connection |
mm
|
DN65 flange
|
DN80 flange
|
| Water-side heat exchanger |
-
|
Shell-and-tube
|
Shell-and-tube
|
| Air flow rate |
m³/h
|
28,000
|
49,000
|
| Fan quantity |
pcs
|
2
|
2
|
| Air-side heat exchanger |
-
|
Finned copper tube
|
Finned copper tube
|
| Overall dimensions (W × D × H) |
mm
|
1995 × 960 × 1890
|
2200 × 1120 × 2370
|
| Packing dimensions (W × D × H) |
mm
|
2050 × 980 × 2030
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2300 × 1180 × 2500
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| Net weight |
kg
|
530
|
890
|
| Operating weight |
kg
|
573
|
952
|
| Operating sound level |
dB(A)
|
63
|
68
|
| Ambient operating range |
°C
|
Cooling 15 to 48; Heating -15 to 24
|
Cooling 15 to 48; Heating -15 to 24
|
| Leaving water temperature range |
°C
|
Cooling 5 to 17; Heating 30 to 50
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Cooling 5 to 17; Heating 30 to 50
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Nominal cooling condition: Outdoor entering-air dry-bulb temperature 35°C, chilled-water leaving temperature 7°C, and water flow rate 0.172 m³/(h·kW).
Nominal heating condition: Outdoor entering-air dry-/wet-bulb temperature 7/6°C, hot-water leaving temperature 45°C, and water flow rate 0.172 m³/(h·kW).
Product specifications may be revised as the equipment is improved. The confirmed project submittal and unit nameplate shall take precedence.
65 kW Module - Combined-System Performance
| Model | Module count | AKQWRF65M/SN11-H | |||||||
| Parameter | Unit | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Cooling capacity |
kW
|
65
|
130
|
195
|
260
|
325
|
390
|
455
|
520
|
| Heating capacity |
kW
|
72
|
144
|
216
|
288
|
360
|
432
|
504
|
576
|
| Cooling input power |
kW
|
19.52
|
39.04
|
58.56
|
78.08
|
97.60
|
117.12
|
136.64
|
156.16
|
| Cooling current |
A
|
36.5
|
73.0
|
109.5
|
146.0
|
182.5
|
219.0
|
255.5
|
292.0
|
| Heating input power |
kW
|
20.6
|
41.2
|
61.8
|
82.4
|
103.0
|
123.6
|
144.2
|
164.8
|
| Heating current |
A
|
38.3
|
76.6
|
114.9
|
153.2
|
191.5
|
229.8
|
268.1
|
306.4
|
| Maximum input power |
kW
|
30.1
|
60.2
|
90.3
|
120.4
|
150.5
|
180.6
|
210.7
|
240.8
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| Maximum operating current |
A
|
55
|
110
|
165
|
220
|
275
|
330
|
385
|
440
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| Compressor quantity |
pcs
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
| Refrigerant charge |
kg
|
8.5×1
|
8.5×2
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8.5×3
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8.5×4
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8.5×5
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8.5×6
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8.5×7
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8.5×8
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| Water flow rate |
m³/h
|
11.2
|
22.4
|
33.6
|
44.8
|
56
|
67.2
|
78.4
|
89.6
|
| Water pressure drop |
kPa
|
48
|
48
|
48
|
48
|
48
|
48
|
48
|
48
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| Maximum water pressure |
MPa
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
| Main water connection |
mm
|
DN65
|
DN65
|
DN80
|
DN100
|
DN100
|
DN125
|
DN125
|
DN150
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| Fan quantity |
pcs
|
2
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
| Net weight |
kg
|
530
|
1060
|
1590
|
2120
|
2650
|
3180
|
3710
|
4240
|
| Operating weight |
kg
|
573
|
1146
|
1719
|
2292
|
2865
|
3438
|
4011
|
4584
|
Common items: 380 V 3N~50 Hz power supply; R410A refrigerant; flanged water connection; shell-and-tube water-side heat exchanger; finned copper-tube air-side heat exchanger.
65 kW Module - Combined-System Performance
| Model | Module count | AKQWRF65M/SN11-H | |||||||
| Parameter | Unit | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Cooling capacity |
kW
|
585
|
650
|
715
|
780
|
845
|
910
|
975
|
1040
|
| Heating capacity |
kW
|
648
|
720
|
792
|
864
|
936
|
1008
|
1080
|
1152
|
| Cooling input power |
kW
|
175.68
|
195.20
|
214.72
|
234.24
|
253.76
|
273.28
|
292.80
|
312.32
|
| Cooling current |
A
|
328.5
|
365.0
|
401.5
|
438.0
|
474.5
|
511.0
|
547.5
|
584.0
|
| Heating input power |
kW
|
185.4
|
206.0
|
226.6
|
247.2
|
267.8
|
288.4
|
309.0
|
329.6
|
| Heating current |
A
|
344.7
|
383.0
|
421.3
|
459.6
|
497.9
|
536.2
|
574.5
|
612.8
|
| Maximum input power |
kW
|
270.9
|
301.0
|
331.1
|
361.2
|
391.3
|
421.4
|
451.5
|
481.6
|
| Maximum operating current |
A
|
495
|
550
|
605
|
660
|
715
|
770
|
825
|
880
|
| Compressor quantity |
pcs
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
| Refrigerant charge |
kg
|
8.5×9
|
8.5×10
|
8.5×11
|
8.5×12
|
8.5×13
|
8.5×14
|
8.5×15
|
8.5×16
|
| Water flow rate |
m³/h
|
100.8
|
112
|
123.2
|
134.4
|
145.6
|
156.8
|
168
|
179.2
|
| Water pressure drop |
kPa
|
48
|
48
|
48
|
48
|
48
|
48
|
48
|
48
|
| Maximum water pressure |
MPa
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
| Main water connection |
mm
|
DN150
|
DN150
|
DN150
|
DN200
|
DN200
|
DN200
|
DN200
|
DN200
|
| Fan quantity |
pcs
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
| Net weight |
kg
|
4770
|
5300
|
5830
|
6360
|
6890
|
7420
|
7950
|
8480
|
| Operating weight |
kg
|
5157
|
5730
|
6303
|
6876
|
7449
|
8022
|
8595
|
9168
|
Values are based on multiplication of the module data and the connection sizes shown in the source table. Final project selection must be confirmed by AIRKO.
130 kW Module - Combined-System Performance
| Model | Module count | AKQWRF130M/SN11-H | |||||||
| Parameter | Unit | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Cooling capacity |
kW
|
130
|
260
|
390
|
520
|
650
|
780
|
910
|
1040
|
| Heating capacity |
kW
|
143
|
286
|
429
|
572
|
715
|
858
|
1001
|
1144
|
| Cooling input power |
kW
|
39.16
|
78.32
|
117.48
|
156.64
|
195.80
|
234.96
|
274.12
|
313.28
|
| Cooling current |
A
|
74.5
|
149.1
|
223.6
|
298.2
|
372.8
|
447.3
|
521.9
|
596.4
|
| Heating input power |
kW
|
41.0
|
82.0
|
123.0
|
164.0
|
205.0
|
246.0
|
287.0
|
328.0
|
| Heating current |
A
|
76.5
|
152.9
|
229.4
|
305.9
|
382.4
|
458.8
|
535.3
|
611.8
|
| Maximum input power |
kW
|
60.2
|
120.4
|
180.6
|
240.8
|
301.0
|
361.2
|
421.4
|
481.6
|
| Maximum operating current |
A
|
110
|
220
|
330
|
440
|
550
|
660
|
770
|
880
|
| Compressor quantity |
pcs
|
2
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
| Refrigerant charge |
kg
|
8×2
|
8×4
|
8×6
|
8×8
|
8×10
|
8×12
|
8×14
|
8×16
|
| Water flow rate |
m³/h
|
22.4
|
44.8
|
67.2
|
89.6
|
112
|
134.4
|
156.8
|
179.2
|
| Water pressure drop |
kPa
|
60
|
60
|
60
|
60
|
60
|
60
|
60
|
60
|
| Maximum water pressure |
MPa
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
| Main water connection |
mm
|
DN65
|
DN100
|
DN125
|
DN150
|
DN150
|
DN200
|
DN200
|
DN200
|
| Fan quantity |
pcs
|
2
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
| Net weight |
kg
|
890
|
1780
|
2670
|
3560
|
4450
|
5340
|
6230
|
7120
|
| Operating weight |
kg
|
952
|
1904
|
2856
|
3808
|
4760
|
5712
|
6664
|
7616
|
Common items: 380 V 3N~50 Hz power supply; R410A refrigerant; flanged water connection; shell-and-tube water-side heat exchanger; finned copper-tube air-side heat exchanger.
130 kW Module - Combined-System Performance
| Model | Module count | AKQWRF130M/SN11-H | |||||||
| Parameter | Unit | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Cooling capacity |
kW
|
1170
|
1300
|
1430
|
1560
|
1690
|
1820
|
1950
|
2080
|
| Heating capacity |
kW
|
1287
|
1430
|
1573
|
1716
|
1859
|
2002
|
2145
|
2288
|
| Cooling input power |
kW
|
352.44
|
391.60
|
430.76
|
469.92
|
509.08
|
548.24
|
587.40
|
626.56
|
| Cooling current |
A
|
670.9
|
745.5
|
820.0
|
894.6
|
969.1
|
1043.7
|
1118.2
|
1192.8
|
| Heating input power |
kW
|
369.0
|
410.0
|
451.0
|
492.0
|
533.0
|
574.0
|
615.0
|
656.0
|
| Heating current |
A
|
688.2
|
764.7
|
841.2
|
917.6
|
994.1
|
1070.6
|
1147.0
|
1223.5
|
| Maximum input power |
kW
|
541.8
|
602.0
|
662.2
|
722.4
|
782.6
|
842.8
|
903.0
|
963.2
|
| Maximum operating current |
A
|
990
|
1100
|
1210
|
1320
|
1430
|
1540
|
1650
|
1760
|
| Compressor quantity |
pcs
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
| Refrigerant charge |
kg
|
8×18
|
8×20
|
8×22
|
8×24
|
8×26
|
8×28
|
8×30
|
8×32
|
| Water flow rate |
m³/h
|
201.6
|
224
|
246.4
|
268.8
|
291.2
|
313.6
|
336
|
358.4
|
| Water pressure drop |
kPa
|
60
|
60
|
60
|
60
|
60
|
60
|
60
|
60
|
| Maximum water pressure |
MPa
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
| Main water connection |
mm
|
DN200
|
DN200
|
DN250
|
DN250
|
DN250
|
DN250
|
DN250
|
DN250
|
| Fan quantity |
pcs
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
| Net weight |
kg
|
8010
|
8900
|
9790
|
10680
|
11570
|
12460
|
13350
|
14240
|
| Operating weight |
kg
|
8568
|
9520
|
10472
|
11424
|
12376
|
13328
|
14280
|
15232
|
Values are based on multiplication of the module data and the connection sizes shown in the source table. Final project selection must be confirmed by AIRKO.
Products Description
Cooling Capacity Correction Factor
| Leaving water temperature (°C) | Ambient temperature (°C) | ||||||
| 15 | 20 | 25 | 30 | 35 | 40 | 45 | |
| 5 |
1.08
|
1.04
|
1.00
|
0.96
|
0.92
|
0.88
|
0.82
|
| 6 |
1.10
|
1.07
|
1.04
|
0.99
|
0.96
|
0.90
|
0.84
|
| 7 |
1.14
|
1.11
|
1.08
|
1.05
|
1.00
|
0.93
|
0.86
|
| 8 |
1.18
|
1.15
|
1.12
|
1.09
|
1.04
|
0.96
|
0.88
|
| 9 |
1.22
|
1.19
|
1.16
|
1.13
|
1.08
|
0.99
|
0.90
|
| 10 |
1.26
|
1.23
|
1.20
|
1.16
|
1.12
|
1.02
|
0.92
|
| 11 |
1.30
|
1.27
|
1.24
|
1.19
|
1.16
|
1.05
|
0.94
|
| 12 |
1.34
|
1.31
|
1.28
|
1.25
|
1.20
|
1.08
|
0.96
|
| 13 |
1.38
|
1.35
|
1.32
|
1.29
|
1.24
|
1.11
|
0.98
|
| 14 |
1.42
|
1.39
|
1.36
|
1.33
|
1.28
|
1.14
|
1.00
|
| 15 |
1.46
|
1.43
|
1.40
|
1.37
|
1.32
|
1.17
|
1.02
|
| 16 |
1.50
|
1.47
|
1.44
|
1.41
|
1.36
|
1.20
|
1.04
|
| 17 |
1.54
|
1.51
|
1.48
|
1.45
|
1.40
|
1.23
|
1.06
|
Heating Capacity Correction Factor
| Leaving water temperature (°C) | Ambient temperature (°C) | ||||||||
| -15 | -10 | -5 | 0 | 5 | 7 | 10 | 15 | 20 | |
| 30 |
0.53
|
0.72
|
0.80
|
0.89
|
0.99
|
1.05
|
1.10
|
1.22
|
1.29
|
| 35 |
0.56
|
0.69
|
0.78
|
0.88
|
0.98
|
1.03
|
1.09
|
1.20
|
1.28
|
| 40 |
0.53
|
0.68
|
0.76
|
0.87
|
0.97
|
1.01
|
1.08
|
1.19
|
1.27
|
| 45 |
0.51
|
0.67
|
0.75
|
0.85
|
0.96
|
1.00
|
1.07
|
1.17
|
1.25
|
| 50 |
0.48
|
0.65
|
0.73
|
0.84
|
0.95
|
0.98
|
1.05
|
1.16
|
1.24
|
Actual unit capacity = nominal capacity × applicable correction factor.
Installation and Maintenance
|
|
Recommended Installation Clearances Optimized Runtime Equalization: Flexible Backup Capability: Through intelligent capacity management and dependable backup operation, Airko modular HVAC solutions offer long-term efficiency, improved reliability, and continuous comfort for commercial and industrial applications. |
Minimum Installation Clearances (mm)
Why Choose AIRKO
|
Product Quality Modern production base and HVAC testing center
|
R&D Strength Independent technical team and product development
|
|
Customized Solutions System selection based on capacity and project conditions
|
After-Sales Service 24-hour online support and project assistance
|
AIRKO develops air-conditioning equipment and integrated solutions for temperature, humidity and cleanliness control. Main products include air handling units, fan coil units, heat-recovery ventilators, floor convectors, chillers and related HVAC equipment.
|
Website www.airkohvac.com
|
shairko@126.com
|
Phone +86 166 0186 1199
|
+86 135 2423 5353
|
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