Heat Recovery with DX Coil

Motorised heat recovery by-pass device automatically controlled by unit control to use fresh air free-cooling when convenient.
The Bioxigen® purifying system, activates when the fan runs, provides an efficient antibacterial treatment, ensuring optimum health of supplied air.

  • Galvanized steel self-supporting panels, internally and externally insulated
  • Counterflow air-to-air heat recovery device, made of sheets of special paper with special sealing to keep airflows separate and only permeable to water vapor. Total heat exchange with temperature efficiency up to 70% and enthalpy efficiency up to 67%, also at high level during summer season
  • G4 efficiency class filters with synthetic cleanable media, both on fresh air and return air intake
  • Removable side panel to access filters and heat recovery in the event of scheduled maintenance
  • Low consumption, high efficiency & low noise direct driven fans
  • Supply section complete with DX coil (R410A) fitted with solenoid control valve, freon filter, contact temperature sensors on liquid and gas line, NTC sensors upstream and downstream airflow
  • Built-in electric box equipped with PCB to control internal fan speed and to interconnect outdoor/indoor units
  • Duct connection by circular plastic collars
  • CZ-RTC5B Timer remote controller (option)


  • 3 kW: PAW-500ZDX3N (Heizen und Kühlen)
  • 5.1 kW: PAW-800ZDX3N (Heizen und Kühlen)
  • 5.8 kW: PAW-01KZDX3N (Heizen und Kühlen)

You can find information and precautions relevant for installation and maintenance in the instruction manuals. You can find information relevant for disposal at end-of-life in the instruction manual.