China Professional CHINAMFG Air Cooled Rooftop Packaged Units Scroll/Piston/Screw Compressor with Great quality

Product Description

Company Profile
SENDO is a professional manufacturer of quality air conditioning products.
Sendo could supply most products in CHINAMFG field, such as Rooftop Packaged Unit, Split Commercial Unit, Air Cooled Water Chiller, Water Cooled Water Chiller, Chilled Water Air Handling Unit and Fan Coil Unit etc. CHINAMFG also supplies made-to-measure CHINAMFG solutions. We engineer and manufacture Air Conditioner to suit the building design and application.

Rooftop Packaged Unit


1. Convenient for unit selection

– Colour selection
The color can be ordered (OEM) in either white or grey.

– Wide cooling capacity range
There is a large production line of packaged units, with capacities ranging from 3Ton to 110Ton (12kW to 392kW) at nominal conditions.

– Panels selection
Panels can be constructed of galvanized steel coated (Standard) or Panels are double-skin with injection of high density polyurethane.

– Optional accessories
• Inverter Scroll compressors
• EC Plug-Fans
• Tropical climate T3 condition
• Economizer/Free cooling with return air, fresh air dampers and fresh air hood
• Heat recovery (Plate type heat recovery & Wheel type heat recovery optional)
• Additional water heating coil or electric heater for heating or dehumidification
• Optional supply / return air configuration (Side/Top/Bottom)
• Optional high level filter (G4 panel type filter, F8 bag type filer and H13 HEPA filter etc)
• Optional CHINAMFG condenser & evaporator for some area need special anti-corrosion
• Optional precision temperature & humidity control
• 100% Full fresh air
• High external pressure, long air supply distance

2. Outstanding reliability

– Economy
Some models feature the flexibility and economy of 2~4 stages operation. Compressors are progressively switched on only as they are needed. This has the added advantage of lowering start-up current.

– Durable construction
• Standard cabinets are constructed from high grade galvanized steel with polyester powder coated, they are completely weatherized for outdoor installation.
• Coils are manufactured from seamless copper tubes mechanically expanded into hydrophilic aluminum fins, they are tested under 450 CHINAMFG at the factory to avoid leakage. They also undergo dry chemical cleaning after manufacturing for optimum system cleanness.
• External fasteners are stainless steel or galvanized type. Corrosion resistant drain trays are also included.
• All units are tested at the factory to make sure no leakage and provide reliable start up.

– Reliable scroll compressor
High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater. Famous brand compressor: Copeland, CHINAMFG and Danfoss. More reliable.

– Multi-protection design
• Electric panel consists of breakers and contactors for compressors, condenser & evaporator fan motors, phase sequence relay and other necessary protection devices for the main components.
• Main power supply breaker is optional.
• All electric parts are Schneider Electric brand.

3. Quieter operation

• Compressors and low noise Supply fan are mounted on rubber vibration dampers.
• Wave type acoustic Insulation for compressor section, thermal insulation for coil and fan section.

4. Easy installation & maintenance

• All units are factory assembled, internally wired, fully charged refrigerant.
• The Rooftops has provisions for forklift and crane lifting. On arrival to the job site they are ready to be lifted to their operating position through the lifting supports available on the units. Only connect the wires of power supply, and no need to connect any signal wires.
• Quick release fasteners or removable the access doors on the compressor, fan motor, filter, and electric box sections, provide convenient access to system components for maintenance and service.
• The unit provides external pressure gauge for convenient and fast checking system pressure without removing the panel.
• If the unit is in running with abnormal operation, the controller will show the error code for easy troubleshooting.
• Standard washable filter, easy to clean.

5. Control system

• The unit is completely factory-wired with necessary controls and terminal block for power wiring.
• Syslab wired controller is supplied with unit controls as standard. The precision control makes all heating, cooling, or ventilating decisions in response to electronic signals from sensors measuring indoor and outdoor temperatures.
• Besides standard Syslab wired controller, CHINAMFG & CHINAMFG PLC controller with BMS function and precision temperature & humidity control can be matched as optional solution.

Specifications (BD Series)

Cooling Capacity Ton 3.4 4.3 5.0 6.9 8.7 10.2
kW 12.0 15.2 17.5 24.0 30.3 35.6
Power Input kW 4.1 5.3 5.5 8.8 11.3 12.3
Running Current A 7.4 9.7 10.2 16.1 21.2 23.3
Heating Capacity kW 13.2 16.6 18.4 26.5 33.3 37.7
Power Input kW 3.8 4.8 5.1 8.2 10.4 11.3
Running Current A 6.9 9.2 9.7 15.1 20.1 22.2
Power Supply 380~415V/3Ph/50Hz
Refrigerant & Charging Quantity Type R410a
Kg 3.1 3.1 4.3 2×3.1 2×3.1 2×4.3
Compressor Type / Scroll
Brand / Copeland Copeland Copeland Copeland Copeland Copeland
Compressor/Circuit Nos. 1 1 1 2 2 2
Energy Adjustment % 0,100% 0,50%,100%
Condenser Type Copper Pipe + Anticorrosion Aluminium Fin
Condenser Fan Type Axial / Direct
Qty 1 1 1 1 1 1
Power Input kW 0.25 0.37 0.37 0.55 0.75 0.75
Airflow m3/h 4600 7800 7800 9000 12600 12600
Evaporator Type Copper Pipe + Anticorrosion Aluminium Fin
Evaporator Fan Type Direct Direct Direct Belt-Driven
Power Input kW 0.32 0.37 0.45 1.1 1.5 2.2
Supply Airflow m3/h 2100 2600 3400 4100 5200 6300
CFM 1235 1529 2000 2412 3059 3706
ESP Pa 100 100 100 200 200 250
Filter Standard Type G4 Panel Type Filter
Sound Level dB(A) 67 67 68 71 72 72
Dimension Length mm 1498 1498 1498 1978 1978 1978
Width mm 1100 1100 1100 1175 1175 1175
Height mm 1095 1095 1095 1095 1095 1095
Net Weight Kg 245 260 290 420 485 500

*** *** *** *** *** *** *** *** ***

Cooling Capacity Ton 12.7 14.3 17.1 20.0 25.7 30.0
kW 44.5 50.0 60.0 70.0 90.0 105.0
Power Input kW 17.0 19.5 22.8 26.7 32.9 39.7
Running Current A 31.7 35.6 39.9 48.3 61.0 70.6
Heating Capacity kW 48.7 54.3 64.0 75.4 96.2 113.2
Power Input kW 15.6 18.0 21.0 24.8 30.4 36.7
Running Current A 29.9 33.5 37.5 45.4 57.3 66.3
Power Supply 380~415V/3Ph/50Hz
Refrigerant & Charging Quantity Type R410a
Kg 4.3+8.5 4.3+8.5 2×7.5 2×8.5 3×7.5 3×8.5
Compressor Type / Scroll
Brand / Copeland Copeland Copeland Copeland Copeland Copeland
Compressor/Circuit Nos. 2/2 2/2 2/2 2/2 3/3 3/3
Energy Adjustment % 0,50%,100% 0,33%,66%,100%
Condenser Type Copper Pipe + Anticorrosion Aluminium Fin
Condenser Fan Type Axial / Direct
Qty 1 1 1 1 2 2
Power Input kW 1.1 1.5 1.5 2.2 2×1.1 2×1.5
Airflow m3/h 16500 21000 21000 27000 2×16500 2×21000
Evaporator Type Copper Pipe + Anticorrosion Aluminium Fin
Evaporator Fan Type Belt-Driven
Power Input kW 3 3 4 4 5.5 5.5
Supply Airflow m3/h 7600 8500 10900 12500 16000 19500
CFM 4471 5000 6412 7353 9412 11471
ESP Pa 250 250 300 300 300 300
Filter Standard Type G4 Panel Type Filter
Sound Level dB(A) 73 73 73 74 74 75
Dimension Length mm 2268 2268 2298 2298 2878 2878
Width mm 1470 1470 1650 1650 2140 2140
Height mm 1167 1167 1400 1400 1964 1964
Net Weight Kg 750 770 830 860 1150 1350


Project Reference

Sendo contribution to combat rising energy costs and global warming is to design innovative, efficient and dependable AC products, while providing best comfort and air quality. We are optimistic about the response that we expect to get from our potential customers because we strive to ensure that our customers get the quality products when they approach us and we are determined to ensure that our customers can obtain various benefits when they buy CHINAMFG Air Conditioners.

Get in touch with us and book a Factory Tour! Sincerely welcome to visit our factory at your convenience.

Type: Rooftop Packaged Air Conditioner
Air Tube Material: Galvanized Sheet
Corrosion Durability: Higher
Operating Voltage: 50Hz or 60Hz
Noise Level: Low
Application Fields: Residential & Commercial Field


air compressor

What role do air dryers play in compressed air systems?

Air dryers play a crucial role in compressed air systems by removing moisture and contaminants from the compressed air. Compressed air, when generated, contains water vapor from the ambient air, which can condense and cause issues in the system and end-use applications. Here’s an overview of the role air dryers play in compressed air systems:

1. Moisture Removal:

Air dryers are primarily responsible for removing moisture from the compressed air. Moisture in compressed air can lead to problems such as corrosion in the system, damage to pneumatic tools and equipment, and compromised product quality in manufacturing processes. Air dryers utilize various techniques, such as refrigeration, adsorption, or membrane separation, to reduce the dew point of the compressed air and eliminate moisture.

2. Contaminant Removal:

In addition to moisture, compressed air can also contain contaminants like oil, dirt, and particles. Air dryers help in removing these contaminants to ensure clean and high-quality compressed air. Depending on the type of air dryer, additional filtration mechanisms may be incorporated to enhance the removal of oil, particulates, and other impurities from the compressed air stream.

3. Protection of Equipment and Processes:

By removing moisture and contaminants, air dryers help protect the downstream equipment and processes that rely on compressed air. Moisture and contaminants can negatively impact the performance, reliability, and lifespan of pneumatic tools, machinery, and instrumentation. Air dryers ensure that the compressed air supplied to these components is clean, dry, and free from harmful substances, minimizing the risk of damage and operational issues.

4. Improved Productivity and Efficiency:

Utilizing air dryers in compressed air systems can lead to improved productivity and efficiency. Dry and clean compressed air reduces the likelihood of equipment failures, downtime, and maintenance requirements. It also prevents issues such as clogging of air lines, malfunctioning of pneumatic components, and inconsistent performance of processes. By maintaining the quality of compressed air, air dryers contribute to uninterrupted operations, optimized productivity, and cost savings.

5. Compliance with Standards and Specifications:

Many industries and applications have specific standards and specifications for the quality of compressed air. Air dryers play a vital role in meeting these requirements by ensuring that the compressed air meets the desired quality standards. This is particularly important in industries such as food and beverage, pharmaceuticals, electronics, and automotive, where clean and dry compressed air is essential for product integrity, safety, and regulatory compliance.

By incorporating air dryers into compressed air systems, users can effectively control moisture and contaminants, protect equipment and processes, enhance productivity, and meet the necessary quality standards for their specific applications.

air compressor

How do you choose the right air compressor for woodworking?

Choosing the right air compressor for woodworking is essential to ensure efficient and effective operation of pneumatic tools and equipment. Here are some factors to consider when selecting an air compressor for woodworking:

1. Required Air Volume (CFM):

Determine the required air volume or cubic feet per minute (CFM) for your woodworking tools and equipment. Different tools have varying CFM requirements, so it is crucial to choose an air compressor that can deliver the required CFM to power your tools effectively. Make sure to consider the highest CFM requirement among the tools you’ll be using simultaneously.

2. Tank Size:

Consider the tank size of the air compressor. A larger tank allows for more stored air, which can be beneficial when using tools that require short bursts of high air volume. It helps maintain a consistent air supply and reduces the frequency of the compressor cycling on and off. However, if you have tools with continuous high CFM demands, a larger tank may not be as critical.

3. Maximum Pressure (PSI):

Check the maximum pressure (PSI) rating of the air compressor. Woodworking tools typically operate within a specific PSI range, so ensure that the compressor can provide the required pressure. It is advisable to choose an air compressor with a higher maximum PSI rating to accommodate any future tool upgrades or changes in your woodworking needs.

4. Noise Level:

Consider the noise level of the air compressor, especially if you’ll be using it in a residential or shared workspace. Some air compressors have noise-reducing features or are designed to operate quietly, making them more suitable for woodworking environments where noise control is important.

5. Portability:

Assess the portability requirements of your woodworking projects. If you need to move the air compressor frequently or work in different locations, a portable and lightweight compressor may be preferable. However, if the compressor will remain stationary in a workshop, a larger, stationary model might be more suitable.

6. Power Source:

Determine the power source available in your woodworking workspace. Air compressors can be powered by electricity or gasoline engines. If electricity is readily available, an electric compressor may be more convenient and cost-effective. Gasoline-powered compressors offer greater flexibility for remote or outdoor woodworking projects where electricity may not be accessible.

7. Quality and Reliability:

Choose an air compressor from a reputable manufacturer known for producing reliable and high-quality equipment. Read customer reviews and consider the warranty and after-sales support offered by the manufacturer to ensure long-term satisfaction and reliability.

8. Budget:

Consider your budget and balance it with the features and specifications required for your woodworking needs. While it’s important to invest in a reliable and suitable air compressor, there are options available at various price points to accommodate different budgets.

By considering these factors and evaluating your specific woodworking requirements, you can choose an air compressor that meets the demands of your tools, provides efficient performance, and enhances your woodworking experience.

air compressor

What are the key components of an air compressor system?

An air compressor system consists of several key components that work together to generate and deliver compressed air. Here are the essential components:

1. Compressor Pump: The compressor pump is the heart of the air compressor system. It draws in ambient air and compresses it to a higher pressure. The pump can be reciprocating (piston-driven) or rotary (screw, vane, or scroll-driven) based on the compressor type.

2. Electric Motor or Engine: The electric motor or engine is responsible for driving the compressor pump. It provides the power necessary to operate the pump and compress the air. The motor or engine’s size and power rating depend on the compressor’s capacity and intended application.

3. Air Intake: The air intake is the opening or inlet through which ambient air enters the compressor system. It is equipped with filters to remove dust, debris, and contaminants from the incoming air, ensuring clean air supply and protecting the compressor components.

4. Compression Chamber: The compression chamber is where the actual compression of air takes place. In reciprocating compressors, it consists of cylinders, pistons, valves, and connecting rods. In rotary compressors, it comprises intermeshing screws, vanes, or scrolls that compress the air as they rotate.

5. Receiver Tank: The receiver tank, also known as an air tank, is a storage vessel that holds the compressed air. It acts as a buffer, allowing for a steady supply of compressed air during peak demand periods and reducing pressure fluctuations. The tank also helps separate moisture from the compressed air, allowing it to condense and be drained out.

6. Pressure Relief Valve: The pressure relief valve is a safety device that protects the compressor system from over-pressurization. It automatically releases excess pressure if it exceeds a predetermined limit, preventing damage to the system and ensuring safe operation.

7. Pressure Switch: The pressure switch is an electrical component that controls the operation of the compressor motor. It monitors the pressure in the system and automatically starts or stops the motor based on pre-set pressure levels. This helps maintain the desired pressure range in the receiver tank.

8. Regulator: The regulator is a device used to control and adjust the output pressure of the compressed air. It allows users to set the desired pressure level for specific applications, ensuring a consistent and safe supply of compressed air.

9. Air Outlet and Distribution System: The air outlet is the point where the compressed air is delivered from the compressor system. It is connected to a distribution system comprising pipes, hoses, fittings, and valves that carry the compressed air to the desired application points or tools.

10. Filters, Dryers, and Lubricators: Depending on the application and air quality requirements, additional components such as filters, dryers, and lubricators may be included in the system. Filters remove contaminants, dryers remove moisture from the compressed air, and lubricators provide lubrication to pneumatic tools and equipment.

These are the key components of an air compressor system. Each component plays a crucial role in the generation, storage, and delivery of compressed air for various industrial, commercial, and personal applications.

China Professional CHINAMFG Air Cooled Rooftop Packaged Units Scroll/Piston/Screw Compressor   with Great qualityChina Professional CHINAMFG Air Cooled Rooftop Packaged Units Scroll/Piston/Screw Compressor   with Great quality
editor by CX 2023-10-07