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How the 2 pipe Heat Recovery System Operates

The World's First and Only "2-Pipe" Heat Recovery System

Watch a video to learn about R2 Systems - (7.5MB)

The Innovative BC Controller Which Makes a 2-pipe System Possible

BC Controller Operation




New Blocking Technology and Refrigerant Circuits Give Powerful Performance and Simple Piping Structure

Newly Developed Solenoid Valve / Check Valve Block

Increased reliability comes from a simple piping configuration. The new blocking approach leads to reduced pressure loss, lighter outdoor units and simpler refrigerant piping.

Solenoid valve block



Check valve block


Heat Exchanger Refrigerant Flow Runs Opposite to Airflow

Redesign of the refrigerant circuit means that the flow of the refrigerant in the outdoor unit's heat exchanger is "one way" whether during heating or cooling. Refrigerant flow consistently runs opposite to airflow guaranteeing high performance.

R2 outdoor units and refrigerant circuit



R2 outdoor unit refrigerant flow



All features and specifications are subject to change and amendment at anytime. Where specifications are critical to design or pre-build we advise that you seek confirmation of accuracy from our product management team on (04) 560-9100.

All prices are subject to normal Black Diamond Technology Limited Terms and Conditions and all prices exclude Installation and Material costs. Plus also note that the retail prices include GST and are indicative only. Stock is subject to availability. All BDT products are sold through authorised dealer networks only.

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