Industrial natural cooling economizer roof complete unit air conditioner

SENDO is a professional manufacturer of quality air conditioning products.Sendo could supply most products in HVAC 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. Sendo also supplies made-to-measure HVAC

Featured Products


SENDO is a professional manufacturer of quality air conditioning products.

Sendo could supply most products in HVAC 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. Sendo also supplies made-to-measure HVAC solutions. We engineer and manufacture Air Conditioner to suit the building design and application.

 
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

Rooftop Packaged Unit

Features

1. Convenient for unit selection

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

 
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

- 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.

 
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

- 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 Golden 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 Psi 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, Panasonic 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.

 
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner


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.

Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner
Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

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, Siemens & Carel PLC controller with BMS function and precision temperature & humidity control can be matched as optional solution.


Specifications (BD Series)

ModelSRT-ST1H12ASRT-ST1H15ASRT-ST1H20ASRT-ST1H25ASRT-ST1H30ASRT-ST1H35A
CoolingCapacityTon3.44.35.0 6.98.710.2
kW12.0 15.217.524.0 30.335.6
Power InputkW4.15.35.58.811.312.3
Running CurrentA7.49.710.216.121.223.3
HeatingCapacitykW13.216.618.426.533.337.7
Power InputkW3.8 4.85.18.210.411.3
Running CurrentA6.99.29.715.120.122.2
Power Supply380~415V/3Ph/50Hz
Refrigerant & Charging QuantityTypeR410a
Kg3.13.14.32x3.12x3.12x4.3
CompressorType/Scroll
Brand/CopelandCopelandCopelandCopelandCopelandCopeland
Compressor/CircuitNos.111222
Energy Adjustment%0,100%0,50%,100%
Condenser
Section
CondenserTypeCopper Pipe + Anticorrosion Aluminium Fin
Condenser FanTypeAxial / Direct
Qty111111
Power InputkW0.250.370.370.550.750.75
Airflowm3/h46007800780090001260012600
Evaporator
Section
EvaporatorTypeCopper Pipe + Anticorrosion Aluminium Fin
Evaporator FanTypeDirectDirectDirectBelt-Driven
Power InputkW0.320.370.451.11.52.2
Supply Airflowm3/h210026003400410052006300
CFM123515292000241230593706
ESPPa100100100200200250
FilterStandardTypeG4 Panel Type Filter
Sound LeveldB(A)676768717272
DimensionLengthmm149814981498197819781978
Widthmm110011001100117511751175
Heightmm109510951095109510951095
Net WeightKg245260290420485500

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

ModelSRT-ST1H45ASRT-ST1H50ASRT-ST1H60ASRT-ST1H70ASRT-ST1H90ASRT-ST1H100A
CoolingCapacityTon12.7 14.3 17.1 20.0 25.7 30.0
kW44.5 50.0 60.0 70.0 90.0 105.0
Power InputkW17.0 19.5 22.8 26.7 32.9 39.7
Running CurrentA31.7 35.6 39.9 48.3 61.0 70.6
HeatingCapacitykW48.7 54.3 64.0 75.4 96.2 113.2
Power InputkW15.6 18.0 21.0 24.8 30.4 36.7
Running CurrentA29.9 33.5 37.5 45.4 57.3 66.3
Power Supply380~415V/3Ph/50Hz
Refrigerant & Charging QuantityTypeR410a
Kg4.3+8.54.3+8.52x7.52x8.53x7.53x8.5
CompressorType/Scroll
Brand/CopelandCopelandCopelandCopelandCopelandCopeland
Compressor/CircuitNos.2/22/22/22/23/33/3
Energy Adjustment%0,50%,100%0,33%,66%,100%
Condenser
Section
CondenserTypeCopper Pipe + Anticorrosion Aluminium Fin
Condenser FanTypeAxial / Direct
Qty111122
Power InputkW1.11.51.52.22x1.12x1.5
Airflowm3/h165002100021000270002x165002x21000
Evaporator
Section
EvaporatorTypeCopper Pipe + Anticorrosion Aluminium Fin
Evaporator FanTypeBelt-Driven
Power InputkW33445.55.5
Supply Airflowm3/h7600850010900125001600019500
CFM4471500064127353941211471
ESPPa250250300300300300
FilterStandardTypeG4 Panel Type Filter
Sound LeveldB(A)737373747475
DimensionLengthmm226822682298229828782878
Widthmm147014701650165021402140
Heightmm116711671400140019641964
Net WeightKg75077083086011501350

Workshop

Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

Project Reference

Industrial Free Cooling Economizer Rooftop Packaged Units Air Conditioner

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.

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

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours