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In large buildings, comfort is rarely about a single room—it's about maintaining a consistent indoor climate across every space, every hour of the day. The Commercial Rooftop Air Conditioning Unit was developed to deliver exactly that: stable, balanced air conditions without constant adjustment or interruption.
Once installed on the rooftop, the system works quietly above daily activity. Inside the building, occupants don’t see it—but they feel the difference. The air remains evenly cooled, without sudden temperature drops or uneven zones. There’s no heavy, stale feeling, no uncomfortable drafts—just a steady, breathable environment that supports productivity and comfort.
The system integrates all essential components into one unit, eliminating the complexity of multiple installations. From the outside, it presents a solid, industrial form; inside, it manages airflow, temperature, and ventilation with quiet precision.
This is not just an air-conditioning unit—it is a central climate solution designed to simplify building operation while improving the indoor experience.
The unit operates as a fully integrated HVAC system, combining air treatment and thermal control in a single rooftop solution.
Air is drawn into the system and conditioned
Cooling or heating is applied as required
Fresh air is mixed and distributed
Conditioned air is supplied evenly throughout the building
Eliminates the need for multiple standalone systems
Ensures consistent temperature distribution
Reduces system complexity
This integrated approach simplifies both installation and long-term operation.
This rooftop unit is ideal for environments where consistent indoor climate directly impacts performance and comfort.
Commercial buildings (offices, malls)
Industrial facilities
Cleanrooms and controlled environments
Warehouses and logistics centers
Maintains stable indoor conditions
Improves employee comfort and productivity
Supports sensitive processes requiring controlled air
In these settings, reliable climate control is not optional—it is essential.
Unit model | WFAJRC28-250 | WFAJRC35-250 | WFAJRC45-320 | WFAJRC55-320 | ||
WFAJLC28-250 | WFAJLC35-250 | WFAJLC45-320 | WFAJLC55-320 | |||
Performance | Operating power supply | 3/N/PE AC 380/220V 50Hz | ||||
Refrigerating | kW | 28.5 | 35.2 | 45.8 | 55.1 | |
Heating capacity 2 | kW | 30.8 | 37.2 | 48.5 | 57.8 | |
Unit power | kW | 10.89 | 13.4 | 17.7 | 20.5 | |
Temperature control | ℃ | ±2 | ||||
Capacity control | % | 0/50/100 | 0/50/100 | 0/50/100 | 0/50/100 | |
Compressor | Type | Hermetic scroll parallel compressor | ||||
Qty | / | 2 | 2 | 2 | 2 | |
Refrigerant | Working medium used | R410A | ||||
Control mode | Electronic expansion valve | |||||
Charge Qty | kg | 7 | 7 | 12.5 | 14 | |
Blower | Type | Centrifugal type | ||||
Drive mode | Belt drive | |||||
Air volume | m³/h | 5800 | 6500 | 9000 | 10000 | |
External static | Pa | 250 | 250 | 320 | 320 | |
Motor power | kW | 2.2 | 3 | 3 | 4 | |
Condensate | Type | High-efficient axial flow fan | ||||
Qty | / | 2 | 2 | 2 | 2 | |
Air volume | m³h | 7000×2 | 7000×2 | 11000×2 | 11600×2 | |
Input power | kW | 0.4×2 | 0.4×2 | 0.7×2 | 0.9×2 | |
Electric | Auxiliary heating | kW | 9 | 12 | 15 | 18 |
Evaporator | Type | Efficient inner-grooved copper tube cover aluminum fin | ||||
Filter | Type and level | Plate-type G3+Plate-type F5 | ||||
Electrical parameters- Without electric heating | Max. | A | 26.68 | 31.68 | 38.84 | 45.98 |
Recommended | mm² | 6 | 10 | 16 | 16 | |
Electrical parameters With electric heating | Max. | A | 40.32 | 49.86 | 61.57 | 73.25 |
Recommended | mm² | 16 | 16 | 25 | 35 | |
Unit | L×W×H | mm | 1870×1700×1770 | 1870×1700×1770 | 2370×2000×1970 | 2370×2000×2000 |
Unit weight | kg | 704 | 714 | 990 | 1046 | |
Noise | dB(A) | 64 | 64 | 66 | 68 | |
Remarks
1.Declared working condition of refrigerating capacity:OA:DB(A)=35℃;RA:DB(A)=27℃,WB=19℃;
2.Declared working condition of heating capacity:OA:DB(A)=7℃,WB=6C;RA:DB(A)=20℃;
3.For heat pump and single cold type,the control target is return air temperature of unit;
4.The auxiliary heating capacity is optional;when the required auxiliary heating capacity differs from that of sample,please contact out technical staff;
5.If the performance parameters of non-standard product samples conflict with the nameplate,the nameplate parameters shall prevail.
Unit model | WFAJRC70-400 | WFAJRC90-400 | WFAJRC110-500 | ||
WFAJLC70-400 | WFAJLC90-400 | WFAJLC110-500 | |||
Performance | Operating power supply | 3/N/PE AC 380/220V 50Hz | |||
Refrigerating | kW | 70.2 | 91.5 | 108.4 | |
Heating capacity 2* | kW | 72.6 | 94.5 | 111.1 | |
Unit power | kW | 27.1 | 34.7 | 41.7 | |
Temperature control | ℃ | ±2 | |||
Capacity control | % | 0/50/100 | 0/50/100 | 0/25/50/75/100 | |
Compressor | Type | Hermetic scroll parallel compressor | |||
Qty | / | 2 | 2 | 4 | |
Refrigerant | Working medium used | R410A | |||
Control mode | Electronic expansion valve | ||||
Charge Qty | kg | 17 | 18 | 14×2 | |
Blower | Type | Centrifugal type | |||
Drive mode | Belt drive | ||||
Air volume | m/h | 14000 | 18000 | 20000 | |
External static | Pa | 400 | 400 | 500 | |
Motor power | kW | 5.5 | 7.5 | 11 | |
Condensate | Type | High-efficient axial flow fan | |||
Qty | 2 | 2 | 4 | ||
Air volume | m³/h | 15000×2 | 18000×2 | 12400×4 | |
Input power | kW | 1.1×2 | 1.25×2 | 0.9×4 | |
Electric | Auxiliary heating | kW | 24 | 30 | 33 |
Evaporator | Type | Efficient inner-grooved copper tube cover aluminum fin | |||
Filter | Type and level | Plate-type G3+Plate-type F5 | |||
Electrical parameters- Without electric heating | Max. | A | 57.05 | 73.16 | 96.66 |
Recommended | mm² | 25 | 35 | 50 | |
Electrical | Max. | A | 93.41 | 118.61 | 146.66 |
Recommended | mm² | 50 | 70 | 95 | |
Unit | L×W×H | mm | 2900×2300×2200 | 2900×2300×2200 | 4800×2000×2200 |
Unit weight | kg | 1340 | 1379 | 1880 | |
Noise | dB(A) | 71 | 75 | 76 | |
Remarks
1.Declared working condition of refrigerating capacity:OA:DB(A)=35℃;RA:DB(A)=27℃,WB=19℃;
2.Declared working condition of heating capacity:OA:DB(A)=7℃,WB=6℃;RA:DB(A)=20℃
3.For heat pump and single cold type,the control target is return air temperature of unit;
4.The auxiliary heating capacity is optional;when the required auxiliary heating capacity differs from that
of sample,please contact out technical staff;
5.If the performance parameters of non-standard product samples conflict with the nameplate,the
nameplate parameters shall prevail.
Unit model | WFAJRC125-500 | WFAJRC140-550 | WFAJRC180-550 | ||
WFAJLC125-500 | WFAJLC140-550 | WFAJLC180-550 | |||
Performance | Operating power supply | 3/N/PE AC 380/220V 50Hz | |||
Refrigerating | KW | 126 | 140.5 | 180.8 | |
Heating capacity 2* | kW | 130.4 | 144.6 | 186 | |
Unit power | kW | 49.1 | 53.6 | 70.4 | |
Temperature control | ℃ | ±2 | |||
Capacity control | % | 0/25/50/75/100 | 0/25/50/75/100 | 0/25/50/75/100 | |
Compressor | Type | Hermetic scroll parallel compressor | |||
Qty | / | 4 | 4 | 4 | |
Refrigerant | Working medium used | R410A | |||
Control mode | Electronic expansion valve | ||||
Charge Qty | kg | 14×2 | 17×2 | 18×2 | |
Blower | Type | Centrifugal type | |||
Drive mode | Belt drive | ||||
Air volume | m/h | 22500 | 27000 | 32000 | |
External static | Pa | 500 | 550 | 550 | |
Motor power | kW | 11 | 15 | 15 | |
Condensate | Type | High-efficient axial flow fan | |||
Qty | / | 4 | 4 | 4 | |
Air volume | m³h | 11600×4 | 15000×4 | 18000×4 | |
Input power | kW | 0.9×4 | 1.1×4 | 1.25×4 | |
Electric | Auxiliary heating | kW | 39 | 45 | 54 |
Evaporator | Type | Efficient inner-grooved copper tube cover aluminum fin | |||
Filter | Type and level | Plate-type G3+Plate-type F5 | |||
Electrical parameters- Without electric heating | Max. | A | 105.46 | 120.80 | 145.22 |
Recommended | mm² | 70 | 70 | 95 | |
Electrical | Max. | A | 164.55 | 188.98 | 227.04 |
Recommended | mm² | 120 | 120 | 150 | |
Unit | L×W×H | mm | 4800×2000×2200 | 5300×2300×2400 | 5300×2300×2400 |
Unit weight | kg | 1952 | 2382 | 2450 | |
Noise | dB(A) | 76 | 78 | 78 | |
Remarks
1.Declared working condition of refrigerating capacity:OA:DB(A)=35℃;RA:DB(A)=27C,WB=19℃;
2.Declared working condition of heating capacity:OA:DB(A)=7℃,WB=6℃;RA:DB(A)=20℃;
3.For clean-type heat pump and single cold type,the control target is return air temperature of unit;
4.The auxiliary heating capacity is optional;when the required auxiliary heating capacity differs from that of sample,please contact out technical staff;
5.If the performance parameters of non-standard product samples conflict with the nameplate,the nameplate parameters shall prevail.
Energy consumption is one of the biggest concerns in large-scale HVAC systems.
Integrated system reduces energy loss between components
Optimized airflow improves efficiency
Continuous operation without frequent cycling
Lower operational costs
Improved energy utilization
Reduced system redundancy
Instead of focusing only on initial cost, the system is designed to deliver long-term economic efficiency.
HVAC Expertise — Focused on cleanroom and industrial climate systems
Integrated Engineering — Designed for simplicity and efficiency
Reliable Performance — Built for continuous operation
We deliver more than equipment—we provide climate stability for critical environments.
Q1: What is the main advantage of a rooftop unit?
It centralizes climate control while saving indoor space.
Q2: Can it handle both cooling and heating?
Yes, it integrates both functions in one system.
Q3: Is it suitable for large buildings?
Yes, it is designed for commercial and industrial applications.
Q4: Does it require complex installation?
No, the integrated design simplifies installation.
Q5: Is it suitable for continuous operation?
Yes, it is built for long-term, stable performance.
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