High Quality Free Cooling Commercial Rooftop Air Conditioning, Rooftop Packaged Unit with Free Cooling, Portable Free Cooling Rooftop Packaged Chiller Suppliers in China

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Free Cooling Rooftop Packaged Air Conditioner

  • Free Cooling Rooftop Packaged Air Conditioner
  • Free Cooling Rooftop Packaged Air Conditioner
  • Free Cooling Rooftop Packaged Air Conditioner
  • Free Cooling Rooftop Packaged Air Conditioner

Free Cooling Rooftop Packaged Air Conditioner

    Payment Type: L/C,T/T,Western Union
    Terms of Trade: FOB,CFR,CIF
    Min. Order: 1 Set/Sets
    Delivery Time: 30 Days
    Packaging: Plywood Casing or standard package suitable for sea and air transport
    Productivity: 6000PCS/Year
    Brand: Amrta or OEM
    Transportation: Ocean
    Place of Origin: China
    Supply Ability: 500PCS/Month
    HS Code: 8418612090
    Port: Qingdao,Shandong,China

Basic Info

Model No.: RTU12~RTU300

Product Description

The free cooling rooftop packaged unit with a integral design. It is supplied as a complete package ready for operation, with no extra controls or other items to be installed, the indoor unit and outdoor unit are together. The units have a single power point entry with simple connections. Quick start-up is assured once installation is completed, all units are tested at the factory to provide reliable start up. The units have horizontal and vertical pipe connection for the difference requirements, you can choose the best one according to the actual installation, saving time and cost. It is also called packaged unit, it is popular for the small place to install.

Our Product Range

Central Air Conditioning


01.Structure. Panels and frame are made from galvanized steel protected with polyester powder painting to ensure total resistance to atmospheric agents.
Direct expansion coils with condensate drain tray.
02. Hermetic Compressor. High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater, mounted on rubber vibration dampers. Ripple type acoustic insulation for compressor section, and thermal insulation for coil and fan section, low noise.
03.Centrifugal fan. Forward curve centrifugal fans for air treatment section and axial fans for condensation section. Front, side and underside air discharge of the treatment unit. High external pressure, long air supply distance.
04. Electric panel. Electric panel consists of breakers and contactors for compressors and fan motors, phase sequence relay and other necessary protection devices for the main components.
05. Easy operation line controller
Error indication
Timing on/off
06. Optional

Economizer with fresh, return air dampers and fresh air hood

Free cooling function for low ambient temperature

Low ambient control device for operation of outdoor units at ambient temperatures from less than 20°C down to -10°C
BMS devices
T3 (Tropical climate)
Roof curb
Metal/aluminum filter
100% heat recovery
Evaporating section: double skin with 50mm polyurethane foam
Optional water heating coil
Metal or plastic mesh on condenser coil
Optional supply/return air configurations
Upgraded plug fan

G4 filter, plate and bag filter

Fresh Air Ducted Rooftop Packaged Unit

07. Economizer and Free Cooling.

It is one of the most important features of this rooftop as it maximise seasonal efficiency by reducing the use of thermodynamic cooling in mid season.

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.
Rooftop units are supplied with economizer and fresh air hood to improve comfort through better fresh air management and allow energy savings with free cooling.
08. Exhaust air
Gravity exhaust damper
Gravity exhaust damper Installed with economizer assembly, gravity exhaust damper relief pressure when outside air is being introduced in the system. It is a cheap and smart way to avoid over pressure in a building.
Power exhaust fans
Installed with economizer assembly, it provides exhaust air pressure relief when high levels of fresh air are being introduced in the system.

Interlocked to run when return air dampers are being closed and supply air blower is in operation. The extraction fans run when outdoor air dampers are at least 50% open (adjustable). It is also overload protected. A gravity exhaust damper is supplied with this option to prevent air from entering the unit during shutdown. The power exhaust fans have been size to exhaust 50% of the nominal air flow of the rooftop packaged unit.

Economizer And Free Cooling

Technical Data








Cooling capacity








Heating capacity








Power supply

380V / 3Ph / 50HZA

Cooling power input