Product Overview
The AIRKO fixed-speed air-cooled modular heat pump chiller uses water as the energy-transfer medium and outdoor air as the cooling and heating source. When connected to fan coil units, air handling units or packaged air-treatment equipment, it forms a complete hydronic air-conditioning system for summer cooling and winter heating.
The unit combines R410A refrigerant, reliable hermetic scroll compressors, high-efficiency heat exchangers and precision electronic expansion-valve control. It is designed for efficient operation, broad climate adaptability and stable leaving-water temperature.
Two base modules are available: 65 kW and 130 kW. Up to 16 modules can be connected in parallel, creating a flexible total system capacity from 65 kW to 2,080 kW. This modular approach supports phased investment, future expansion, part-load efficiency and easier maintenance.
|  |
| AKQWRF65M/SN11-H - 65 kW Base Module | AKQWRF130M/SN11-H - 130 kW Base Module |
Applications and System Benefits
|
|
| 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
| 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
|
High-Efficiency Core Components
| 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
|
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.
|
|
High-Efficiency Heat Exchange System
|
|
| U-Shaped Air-Side Heat Exchanger | Shell-and-Tube Water-Side Heat Exchanger |
Air-Side Heat Exchanger: CFD simulation is used to optimize copper-tube spacing, fin geometry and airflow distribution. Internally grooved copper tubes and hydrophilic fins improve heat transfer, support efficient cooling and help produce cleaner defrosting during winter operation.
Water-Side Heat Exchanger: A helical-baffle shell-and-tube design promotes fuller heat exchange. According to the source brochure, heat-transfer efficiency is more than 15% higher than a conventional shell-and-tube design. Curved water flow reduces dead zones and helps limit scale accumulation.
The source brochure states that the complete heat-exchanger system improves heat-transfer efficiency by approximately 12% compared with the previous generation.
Large Fan and Precision Refrigerant Control
|
|
| 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.
High Humidity Prompt defrost when frost forms quickly
| Low Humidity Longer intervals and fewer unnecessary cycles
| Circuit Rotation Circuit A and Circuit B defrost alternately
|
Module Rotation Parallel modules defrost in stages
| Stable Heating Other circuits continue operating
| Lower Fluctuation Reduced leaving-water temperature variation
|
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
| Balanced Operating Hours and Backup Operation At part load, the controller prioritizes the circuit or module with the longest accumulated off-time. Operating hours are distributed more evenly, helping extend the service life of the overall system.
The dual-system, multi-module arrangement provides backup operation. If one circuit or one module faults, the remaining circuits and modules can continue operating.
|
Intelligent Control and System Linkage
| 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
|
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
| 2300 × 1180 × 2500
|
| 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
| Cooling 5 to 17; Heating 30 to 50
|
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
|
| Maximum operating current | A
| 55
| 110
| 165
| 220
| 275
| 330
| 385
| 440
|
| Compressor quantity | pcs
| 1
| 2
| 3
| 4
| 5
| 6
| 7
| 8
|
| Refrigerant charge | kg
| 8.5×1
| 8.5×2
| 8.5×3
| 8.5×4
| 8.5×5
| 8.5×6
| 8.5×7
| 8.5×8
|
| 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
|
| 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
|
| 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 Maintain sufficient airflow and service space around each unit. Both 65 kW and 130 kW modules require at least 1,500 mm in the specified side directions and 3,000 mm in direction G, according to the source installation diagram.
· Use a strong, level installation foundation
· Provide reliable grounding and earth-leakage protection
· Keep the unit away from corrosive environments
· Ensure the drain path can discharge water freely
|
· Installation must be carried out by qualified HVAC professionals.
· Use accessories and locally purchased components that meet the manufacturer's requirements.
· Do not modify or repair the unit without authorization.
· Confirm that lifting points and the installation foundation are secure.
· Use qualified personnel when moving or reinstalling the equipment.
· Install lightning protection in accordance with local regulations.
· Connect power cables correctly and confirm phase sequence before commissioning.
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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