Glory Bright Air-cooled scroll condensing units are the perfect refrigeration components for all air conditioning applications that use DX central station air handling. They are designed for outdoor installation. Each unit includes hermetic scroll compressors or semi-hermetic screw compressors, air cooled condenser, condensing fans, all mounted on a formed steel base. Accumulator, oil separator and receiver as optional based on project situation. Condensing units utilize top-quality components to ensure years of reliable operation. Customized design. Ex-proof type as optional.
Compressor
Air-cooled condensing units use ultra quiet, high-efficiency screw compressors (BITZER or CARLEY brand) or hermetic scroll compressors (DANFOSS or COPELAND brand), operated in independent circuit for greater efficiency at partial loads.
Screw Compressor Capacity Control: Compressors shall start at minimum load position. Capacity control range is from 100% to 10% of chiller full load using continuous function slide valves. Step loading & unloading as optional (25%-50%-75%-100%) Provide Microprocessor controlled, output pressure regulating capacity control valve to command compressor capacity independent of control valve input pressure and balance compressor capacity with cooling load.
Structure
We adopt cold-rolled steel for maximum structural integrity. The zinc-dipped and powder painted galvanized frame provides the best protection on the market for corrosion resistance. Hot-dipped galvanized foundation as standard. SS316L material is optional.
Condenser coil
Several options are available to match coil construction to the site conditions for the best durability. Refer to the Environmental Corrosion situation. Internally enhanced, seamless copper tubes mechanically expanded into aluminum alloy fins or copper fins with full height collars. Blygold coating or E-coating as optional to protect aluminum fin or copper fin during long term exposed in marine environment.
Condensing Fans (Axial type)
Shall be dynamically and statically balanced, direct drive, corrosion resistant glass fiber reinforced composite blades molded into low noise, full airfoil cross section, providing vertical air discharge from extended orifices for efficiency and low sound. Each fan is in its own compartment to prevent cross flow during fan cycling. The fan guards are constructed of heavy-gauge, rust-resistant, coated steel. SS316L material fan as optional based on project request. Anti-sparkling design applied for ex-proof usage.
Fan Motors: High efficiency, direct drive, 3-phase, insulation class “F”, current protected, Totally Enclosed Air-Over (TEAO), squirrel-cage, rigid mounted, with double sealed, permanently lubricated, ball bearings.
Refrigeration circuit
All unit piping will be copper, with brazed joints. The liquid line will include a field connection shutoff valve with charging port located on each condenser circuit. Suction line connections are provided on each refrigeration circuit at the suction valve. A filter drier and sight glass are shipped loose for field installation on each refrigerant circuit. Field refrigerant piping can be connected to the condensing unit without loss of charge in the unit. All expansion valves and liquid line solenoid valves and refrigerant field piping are loose supplied or installed on AHU part.
Microprocessor controller
Microprocessor controls overall unit operation. Its central executive routine controls a number of processes simultaneously. Automatic control of compressor start/stop and load/unload, anti-coincidence and anti-recycle timers, automatic start-up and shut-down, condenser fans, AHU control, unit alarm contacts, run signal contacts, and whole AC units operation. Automatic reset to normal operation after power failure.
