Carrier 06TTW356 Water-Cooled Twin-Screw AC Refrigeration Compressor for Chiller

Engineered for large-capacity central HVAC plants, district cooling grids, and heavy industrial liquid chillers, the 06TTW356 screw AC compressor delivers high-efficiency fluid cooling under continuous operational demand. Driven by a 120 HP motor and optimized for eco-friendly R134a, it produces a volumetric displacement of 596 m³/h (356 CFM) at 60Hz and 494 m³/h (296 CFM) at 50Hz. By leveraging stable water-cooled condensing conditions, the unit operates at lower power inputs (75 kW @ 50Hz / 89 kW @ 60Hz) while utilizing an integrated 1-3/8 in. economizer subcooling loop to maximize system COP during peak cooling cycles.

Designed specifically for installation in commercial building mechanical rooms, the 06TTW356 features precision-ground twin-screw rotors manufactured to micro-inch tolerances. This profile geometry ensures smooth gas compression, eliminates pressure pulses, and reduces mechanical vibration. The high-rigidity 662 kg cast frame acts as a natural dampening mass, keeping acoustic emissions low and protecting adjacent piping networks from resonance stress.

The compressor relies on internal pressure-differential channel lubrication, delivering continuous oil flow to high-load SKF/NSK bearings without requiring a motorized external oil pump. This pump-free design eliminates mechanical wear points and lowers failure risks during long operational seasons. Accessible external service ports and spin-on oil filter access ensure routine maintenance can be completed quickly with minimal downtime.

• Standard Package: Junction Terminal Box, Dual Solenoid Modulation Valves, Internal Lubrication Network, Motor Protection Relay, Suction & Discharge Service Valves.
• Optional Add-ons: Economizer Subcooling Plate Exchanger, High-Efficiency External Oil Separator, Auxiliary Liquid Oil Cooler, Companion Flanges, Kriwan Diagnostic Module.

Ruifujie is an established international supplier of commercial HVAC and industrial cooling equipment, supported by over two decades of manufacturing and engineering excellence. We deliver high-efficiency screw, semi-hermetic reciprocating, scroll, and rotary compressors, as well as complete water chillers and modular cold storage solutions. Offering full OEM/ODM manufacturing, rigorous factory inspection, and competitive supply chains, Ruifujie serves engineering firms, facility contractors, and distributors throughout North America, Europe, the Middle East, and Asia.

The unit utilizes precision-ground twin-screw rotors that distribute compression torque evenly, preventing pulsation. Combined with a heavy 662 kg cast-iron housing, structural vibration is dampened before it reaches building mountings or suction piping.

Operating R134a within a water-cooled circuit allows for lower condensing pressures compared to air-cooled units. This significantly lowers electrical draw (down to 75 kW at 50Hz) and protects internal motor components from excessive thermal stress.

As soon as the compressor creates an internal pressure delta, oil is driven directly through internal channels to the SKF/NSK bearing assemblies. Eliminating mechanical oil pumps removes a major point of component failure and simplifies annual preventive maintenance.

Star-Delta starting reduces the initial electrical inrush current by up to 67% (e.g., dropping 460V 60Hz LRA from 930A to 298A), preventing voltage drops across the building's electrical main board.

Every compressor is vacuum-dried, pressure-tested, charged with dry nitrogen, wrapped in a protective moisture barrier, and bolted inside a reinforced export plywood crate to ensure safe international delivery.

Upgrading a central chiller facility or building a custom water-cooled liquid chiller? Contact the Ruifujie technical sales group today to receive CAD files, performance software calculations, and factory-direct pricing within 8 business hours.

Please include the following details in your inquiry:

• Target Model:
• Order Quantity:
• Chiller Application (e.g., Central HVAC, Industrial Process Cooling):
• Refrigerant Type:
• Site Voltage & Frequency:
• Design Evaporating & Condensing Temperatures: