Air Cooled Rooftop Packaged Unit

• Customization: Available
• Air Tube Material: Galvanized Sheet
• Corrosion Durability: Higher
• Model NO.: SRT
• Noise Level: Low
• Certification: ISO, CE, CCC
• Condition: New
• Colour: White or Grey
• Ambient Temp.: T1 or T3 Tropical Climate
• Capacity: 12kw to 392kw
• Refrigerant: R22/R407c/R410A
• Power Supply: 50Hz or 60Hz
• Compressor Type: Inverter/on-off Scroll
• ODM/OEM: Available
• Function: Cooling Only & Heat Pump
• Panel Selection: Galvanized Steel Coated or Double-Skin
• Economizer: Optional
• Free Cooling: Optional
• Supply/Return Air Configuration: Optional (Side/Top/Bottom)
• Filter: Optional High Level Filters
• Special Anti-Corrosion: Epoxy Coated Fins/Copper-Copper Fins
• Electric Heater/Hot Water Coil: Optional
• Transport Package: Plastic Film or Plywood Case
• Specification: 3Ton to 110Ton
• Trademark: SENDO or OEM
• Origin: China
• HS Code: 8418692090
• Production Capacity: 5000 Units

Product Description

Air Cooled Rooftop Packaged Unit

SENDO is a professional supplier of air conditioning products in China. Sendo could supply most products in HVAC field:
Rooftop Packaged Unit
Split Commercial Unit (Ducted Split Unit, DX Air Handling Unit, Air Cooled Package Unit)
Air Cooled Water Chiller (Mini Chiller, Modular Chiller, Large Size Scroll Chiller, Screw Chiller)
Air Cooled Industrial Chiller
Water Cooled Package Unit, Water Cooled Water Chiller (Water Cooled Scroll Chiller, Water Cooled Screw Chiller)
Chilled Water Air Handling Unit and Fan Coil Unit
Sendo also supplies made-to-measure HVAC solutions. We engineer and manufacture Air Conditioner/Industrial Chiller to suit the building design and various application.



Rooftop Packaged Unit
Sendo Rooftop Package Units are unitary packaged units which are factory assembled, tested and shipped completely with compressor, evaporator and condenser coils, fans and controls. The units are ideal for residential, commercial and industrial applications and are available in nominal cooling capacity from 12 kW to 392 kW (3Ton to 110Ton).


Optional high efficiency DC Inverter compressor
Sendo Rooftop Packaged Air Conditioner achieves the industry's top class energy efficiency in cooling and heating by utilizing DC inverter compressor. The DC inverter compressor adopts innovative design and numerous high performance key parts which can reduce power consumption by 25%.
 

Features of DC Inverter compressor includes:
New structure enhances mid-frequency performance.
Specially designed scroll profile for R410A.
More compact, weight reduced by 50%.
Advanced permanent magnet DC motor improves low-frequency band performance.

Key benefits include:
Rapid warm up and cool down, the DC Inverter Compressor system reaches full load rapidly providing less temperature fluctuation and an improved living environment.

High efficiency EC fan technology

EC plug fans deliver exact airflow requirements while minimising power usage at the same time. In fact EC plug fan technology is up to 50% more efficient than traditional belt and pulley systems. This provides enhanced comfort and improved maintenance of system performance.
 

Key benefits include:
Program control feature for exact airflow requirements.
High static easily achieved.
Eliminates belt dust and belt adjustment, providing a cleaner environment, and lowers operational maintenance cost.
Significant time saved for on-site commissioning.
Improved occupant comfort.

Optional free cooling technology
Buildings that comply with new thermal regulations have good insulation and require more cooling even when outside temperature is low. Thermodynamic cooling can be replaced by free cooling by introducing cool outside air into the building for best energy efficiency year round.
 

With Indoor air quality and running cost being more important, Sendo EC series Rooftops are supplied with economizer and fresh air hood as a optional feature to improve comfort through better fresh air management and allow energy savings with free cooling. (Thermodynamic Cooling can be replaced by Free Cooling when outdoor temperature is below the building set point saving up to 15% on annual energy consumption)

OPTIONAL ACCESSORIES
Tropical climate T3 application
Optional supply / return air configuration
Optional golden condenser & evaporator for some area need special anti-corrosion
Economizer/Free cooling
Additional water heating coil 
Additional electric heater
Heat recovery
100% Full fresh air
Optional high level filter(G4 panel type filter, F8 bag type filer and H13 HEPA filter etc)
Optional precision temperature & humidity control
100% Full fresh air
High external pressure, long air supply distance



Features

CASING / STRUCTURE
The casing is made of zinc coated galvanised steel sheets. It is further treated with an electrostatic powder coat then over baked to provide a weather resistant finish to suit the harsh climate. The screws are also zinc plated to improved product durability.External fasteners are stainless steel or galvanized type. Corrosion resistant drain trays are also included.
COMPRESSOR
High efficiency scroll type compressor is hermetically sealed, quiet running and supported on rubber mounts to minimise vibration. All compressors are provided with an internal overload protection, and incorporate crankcase heater for smooth start-up under any conditions. Except unique three steps capacity configuration of 33%, 67% and 100%, some models feature the flexibility and economy of 2~4 stages operation. 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.
CONDENSER AND EVAPORATOR
The condenser and evaporator coils are manufactured from seamless copper tubes mechanically bonded to blue hydrophilic aluminium fins to ensure optimum heat transfer.
The shoulder of each fin adjoins the shoulder of the adjacent fin, completely encasing the copper tubes for maximum heat transfer. The generously sized coils provide ample capacity under all normal operating conditions.
All coils are pressure tested to 450Psi at the factory to avoid leakage. To improve corrosion resistance, a hydrophilic Gold Fin is provided as optional.
CONDENSER FAN AND MOTOR
Direct driven propeller axial fans are used for maximum condensing efficiency.
EVAPORATOR FAN AND MOTOR
EC is fitted with a plug-fan ensuring that no belt particles can be carried away into the building, this ventilation system is compliant with EN13779 air quality norm. EC plug fans deliver exact airflow requirements while minimising power usage, and are up to 50% more efficient versus traditional belt and pulley systems.
INSULATION
Ripple type acoustic insulation for compressor section, low noise. To prevent the likelihood of condensation occurring the unit is equipped with 10mm Polyethylene panel insulation for coil & fan section.

• 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.
SAFETY
All units are tested at the factory to make sure no leakage and provide reliable start up.
Electric panel consists of breakers and contactors for compressors and fan motors,
phase sequence relay and other necessary protection devices for the main components.
*SIEMENS PLC controller is optional.
*Main power supply breaker is optional.
EASY INSTALLATION AND MAINTENANCE
The base beams are fixed and provide a rigid foundation for the entire unit. The beam has forklift slots or rigging holes for easy handling. 
To keep installation as hassle-free as possible, Sendo units are fully factory assembled, tested and charged with R410A refrigerant. Only ductwork and external wiring connections are required to make the units completely operable ensuring rapid, low-cost installation. 
For ease of commissioning and maintenance, Sendo units include easy access to the electrical cabinet and major refrigeration components.
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.

• 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.
• Standard washable filter, easy to clean.

Specifications

 

Model SRT-ST1HA			12	15	20	25	30	35	45	50	60	70
Cooling	Capacity	kW	12.0	15.2	17.5	24.0	30.3	35.6	44.5	50.0	60.0	70.0
	Power Input	kW	4.1	5.3	5.5	8.8	11.3	12.3	17.0	19.5	22.8	26.7
	Running Current	A	7.4	9.7	10.2	16.1	21.2	23.3	31.7	35.6	39.9	48.3
Heating	Capacity	kW	13.2	16.6	18.4	26.5	33.3	37.7	48.7	54.3	64.0	75.4
	Power Input	kW	3.8	4.8	5.1	8.2	10.4	11.3	15.6	18.0	21.0	24.8
	Running Current	A	6.9	9.2	9.7	15.1	20.1	22.2	29.9	33.5	37.5	45.4
Refrigerant		Type	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A
Compressor	Type	/	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll
Condenser	Condenser Type		Copper Pipe and Anti-corrosion Aluminium Fin
	Condenser Fan	Type	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct
	Airflow	m3/h	4600	7800	7800	9000	12600	12600	16500	21000	21000	27000
Evaporator	Evaporator Type		Copper Pipe and Anti-corrosion Aluminium Fin
	Evaporator Fan	Type	Direct	Direct	Direct	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven
	Power Input	kW	0.32	0.37	0.45	1.1	1.5	2.2	3	3	4	4
	Supply Airflow	m3/h	2100	2600	3400	4100	5200	6300	7600	8500	10900	12500
	ESP	Pa	100	100	100	200	200	250	250	250	300	300
Filter	Standard	Type	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable
Sound Level		dB(A)	67	67	68	71	72	72	73	73	73	74

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

 

Model SRT-ST1HA			90	100	120	140	150	180	200	230	300	400
Cooling	Capacity	kW	90.0	105.0	120.0	140.0	150.0	180.0	210.0	226.0	298.0	392.0
	Power Input	kW	32.9	39.7	45.1	55.7	55.1	69.9	83.0	88.5	106.7	140.2
	Running Current	A	61.0	70.6	82.4	101.4	100.2	130.9	151.0	165.0	192.3	240.0
Heating	Capacity	kW	96.2	113.2	128.3	150.0	159.2	192.5	226.0	241.0	318.0	414.0
	Power Input	kW	30.4	36.7	41.7	51.8	51.5	64.8	77.0	82.9	100.0	133.8
	Running Current	A	57.3	66.3	77.4	95.7	95.1	123.5	142.3	155.6	184.3	232.0
Refrigerant		Type	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A	R410A
Compressor	Type	/	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll
Condenser	Condenser Type		Copper Pipe and Anti-corrosion Aluminium Fin
	Condenser Fan	Type	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct	Axial / Direct
	Airflow	m3/h	33000	42000	42000	54000	54000	66000	84000	84000	108000	135000
Evaporator	Evaporator Type		Copper Pipe and Anti-corrosion Aluminium Fin
	Evaporator Fan	Type	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven	Belt-Driven
	Power Input	kW	5.5	5.5	7.5	11	11	15	15	15	18.5	30
	Supply Airflow	m3/h	16000	19500	21000	25000	26000	32000	38000	41000	54000	67000
	ESP	Pa	300	300	400	400	450	500	500	500	500	500
Filter	Standard	Type	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable	Washable
Sound Level		dB(A)	74	75	75	79	79	80	80	81	82	86

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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 Sendo Air Conditioners.

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