QR550A

Whole-house heat recovery unit, suitable for vertical installation.

APPLICATION

Whole-house heat recovery unit, suitable for vertical installation.

SPECIFICATION

Outer fan casing manufactured from powder coated galvanised sheet steel providing long lasting and robust construction. The unit is finished in white RAL 9010.

Internal structure manufactured from EPP (expanded polypropylene) providing reduced sound emissions and maximised air tightness and thermal insulation.

EC external rotor motors fitted as standard for energy saving.

Provided with integral thermal protection, mounted on sealed for life ball bearings.

Backward curved centrifugal impeller dynamically balanced and directly driven by the motor to provide a smooth airflow through the unit.

Highly efficient counterflow heat exchanger to maximise thermal recovery.

FEATURES & BENEFITS

Ease of installation: fixing bracket supplied to hang the unit easily on the wall.

Simplified electric wiring: the unit is supplied pre-cabled.

Removable front panel for quick access to filters and heat exchanger.

ISO Coarse 60% (G4) filters easy removable for cleaning. The unit is also provided with the ISO ePM1 60% (F7) filter accessory at the intake side.

Integral automatic bypass for free cooling during the summer season.

Automatic anti-frost protection to prevent frost building up on the exhaust side of the heat exchanger.

Two drainage holes to meet climate requirement.

Left/right configuration of the unit for mounting flexibility.

Tested to the latest standards: units are tested in the TÜV Rheinland accredited internal laboratory according to the operating document IEC OD 2048 (level CTF1) for the IEC 60335-1 and IEC 60335-2-80 Standards, meaning accurate, up to date information on electrical safety, performance and noise level that can be relied upon. Unit thermal efficiency, air-leakage and energy efficiency measured at indipendent laboratory BRE (UK). Designed and manufactured in accordance with EN60335-2-80 (Low Voltage Directive) and the EMC Directive (Electromagnetic Compatibility).

OPERATION

The unit is supplied with a multi-function LCD display (CTRL-DSP) for automatic control and convenience, providing:

  • 3 speed settings (adjustable).
  • Boost option.
  • Holiday mode.
  • Night mode.
  • Weekly timer.
  • Bypass setting.
  • Airflow balancing.
  • Filter replacement and fan failure indicator.
  • Working hour counter.
  • Setting saving and loading.
  • Suitable for remote ambient sensors (SEN-HY, SEN-PIR).
  • ModBus interface.
  • Connection to remote pre/post heating element.
  • Connection to remote water coil for heating.
  • Left or Right hand configuration (air connection).
ACCESSORIES QR550A

Residential Ventilation

Domestic Ventilation

Commercial

Industrial Ventilation

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