RTWD Water-to-Water Heat Pump

Cooling capacity: 235 - 1000 kW

Heating capacity: 260 - 1140 kW

  • Market-leading reliability with Trane's renowned, robust screw compressor technology
  • Low-speed, direct-drive semi-hermetic screw compressor featuring only three moving parts to reduce wear and tear; suction-gas-cooled motor
  • Application flexibility: condenser water temperatures up to 75°C (63°C with R134a)
  • Extended and unmatched capacities
  • Compact physical footprint: fits through standard single-width door
  • Trane Adaptive Control™: Tracer® Symbio™ 800 microprocessor system enhances chiller with the latest chiller control technology

Proven Trane reliability

Trane's legendary reliability is based on over 100 years of designing, testing, installing and maintaining chillers around the world. Every Trane product derives from this unique heritage:
• Trane design simplicity
• Trane direct drive, low speed, semi-hermetic compressor with only three moving parts
• Infinite unloading for exact load matching
• RTWD uses system differential rather than a pump to move oil so there are no extra moving parts to wear out or break down

Minimized total cost of ownership

Energy costs are minimized by optimizing efficiency while maintenance costs are reduced thanks to effective performance and alarm monitoring. Installation costs are also lower, thanks to design improvements which reduce the time required for new plants or upgrades.

The Adaptive Frequency Drive reduces energy consumption even further by enhanced part load efficiency, fewer start-stop cycles, increased compressor life and reduced start-up current draw.

Driving Reduced Energy Consumption

The proven Trane Symbio™ 800 controller and the easy-to-use TD7 interface are the leading combination to maintain efficient operation and total chiller control through continuous monitoring:
• Data trending
• Clear alarm log enables fast response and rapid
• Adaptive Control algorithms preempt chiller

A model for every application

Whether your building requires comfort HVAC or precision temperature control as part of a sensitive industrial process, Trane RTWD models perfectly address the market needs for most heat pump applications, including geothermal applications.

  • Heating: From -12 to 20°C (18°C with R134a) on the evaporator side and up to 75°C (63°C with R134a) on the condenser side

  • RTWD packaged chillers are available in 57 different models with two refrigerants and four efficiency levels: SE: Standard Efficiency, HE: High Efficiency, XE: Extra High Efficiency, HSE (With AFD): High seasonal efficiency.

  • RTWD G: R1234ze – RTWD: R134a

Technical Specifications

Product name Cooling capacity Heating capacity Eurovent certification ErP Certification
RTWD Water-to-Water Heat Pump 235-1000 kW 260-1140 kW
Compressor Refrigerants Energy saving Operating mode Data protocols Unit type
R1234ze | R134a Adaptive Frequency™ Drive
Cooling only
Heat pump


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