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Cleanroom HVAC and Air Handling Equipment
Air-Cooled Condensing Unit
A factory-assembled outdoor refrigeration unit that rejects cleanroom cooling loads directly to ambient air and supplies liquid refrigerant to a remote DX coil.
- Direct Ambient Heat Rejection
- Staged Scroll Compression
- Weather-Resistant Cabinet
- Remote DX Coil Service
Product Introduction
The air-cooled condensing unit combines scroll compressors, a finned outdoor condenser, axial fans, refrigerant controls and electrical protection in one weather-resistant enclosure. It connects to a remote evaporator coil in an air-handling unit, keeping compressor noise and rejected heat outside the controlled area. Independent refrigerant circuits and staged fan control can follow varying sensible and latent loads while accessible service panels simplify routine inspection.
Key Features
Tandem scroll circuits allow capacity steps and retain partial cooling when one circuit is isolated.
Separate liquid and suction service connections support remote AHU evaporators and properly routed field piping.
Removable coil guards and hinged control access keep fans, compressors and electrical components serviceable from the perimeter.
Customer Product Concerns
Outdoor condensers must reject a variable cleanroom load without introducing cooling water or compromising refrigeration reliability.
A mechanical room has no condenser-water loop or cooling-tower connection.Axial fans move ambient air across the condenser coil, eliminating condenser-water pumps and treatment equipment.
A single compressor cycle creates unstable supply-air temperature at low load.Multiple scroll stages and fan steps provide smaller capacity increments for steadier remote-coil control.
Long refrigerant runs can cause oil-return and pressure-drop problems.Properly sized suction and liquid connections, receivers and service valves support engineered remote-evaporator piping.
Outdoor coil fouling raises head pressure and power demand.Full-face coil guards and perimeter access allow inspection and cleaning without dismantling the cabinet.
Typical Applications
Pharmaceutical cleanroom air-handling systemsElectronics manufacturing make-up air unitsLaboratory dedicated outdoor-air systemsMedical-device production HVACRemote DX process-cooling air handlers
Technical Parameters
Representative commercial construction ranges for an outdoor cleanroom condensing unit are listed below.
| Core Material | Powder-coated galvanized steel enclosure with copper-tube/aluminum-fin or all-aluminum microchannel condenser coil |
|---|---|
| Panel Thickness | 1.0-1.5 mm removable cabinet panel thickness |
| Effective Width | 900-2200 mm nominal cabinet width |
| Maximum Length | Up to 4200 mm for multi-compressor assemblies |
| Steel Facing Thickness | 1.0-1.5 mm galvanized steel exterior panels |
| Core Density | Approximately 2660-2840 kg/m³ for the aluminum condenser fins or microchannel heat-exchanger sections |
| Thermal Conductivity | Approximately 113-234 W/(m·K) for the aluminum condenser heat-transfer material |
| Surface Finish | UV-resistant polyester powder coating over galvanized steel |
| Joint Type | Bolted modular casing with gasketed service panels and brazed refrigerant joints |
| Customization | Available based on the intended application and operating environment. |
Available Options
Single, tandem or multiple scroll-compressor circuitsCopper-tube/aluminum-fin or microchannel condenser coilLow-ambient fan control and condenser-coil guardsRemote monitoring contacts and variable-speed condenser fans
Planning a Air-Cooled Condensing Unit specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
