Unit pakej bumbung udara 100% segar

100% Fresh Air Rooftop Package Unit

The units are designed to operate with 100% outdoor air to improve indoor air quality. By using a high efficiency sensible or total plate/wheel heat exchanger, the energy consumption can be reduced by up to 75% to fresh air applications. Other options are available to meet hygiene, anti-corrosion or tropical ambience requirement etc.

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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.

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. High efficiency DC Inverter compressor is optional.

CONDENSER AND EVAPORATOR

The condenser and evaporator coils are manufactured from seamless copper tubes mechanically bonded to b lue 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 t o 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 , t his 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. Belt-driven centrifugal fan is optional.

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 .

S AFETY

Electric panel consists of breakers and contactors for compressors and fan motors, phase sequence relay and other necessary protection devices for the main components. All electric parts are Schneider Electric brand.

* 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 bea m 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.

O PTIONAL 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

Plate/Wheel type Heat recovery

100% Full fresh air

Optional high level filter

Optional precision temperature & humidity control

Specification

Cooling: room air temperature 27.0°C DB RH 50%, ambient air temperature 35°C;

Heating: room air temperature 21.0°C DB, ambient air temperature 7°C DB / 6°C WB .

** Noise level measured by adopting average value in the noise lab with background noise of 25 dB(A), at a distance of 1.5m high fan speed.

***Specifications are subject to change without prior notice for SENDO product improvement.

Dimension (Model 80~105)

Workshop

Improved energy efficiency through new technology

100% Fresh Air Cooling Only or Reverse Cycle Rooftop Package Units are designed to operate with 100% outdoor air to improve indoor air quality. By using a high efficiency sensible or total plate/ wheel heat exchanger, the energy consumption can be reduced by up to 75% to fresh air applications. Other options are available to meet hygiene, anti-corrosion or tropical ambience requirement.

The energy consumption to heat or cool fresh air without energy recovery is extremely high. Sendo Energy Recovery feature provides an innovative sustainable solution : M aximise energy savings and reduce energy consumption.