Modular Heat Recovery Air Handling Unit
Modular air treatment with heat recovery between supply and extract air streams.
Modular Heat Recovery Air Handling Unit
Overview
The modular heat recovery air handling unit combines outdoor-air treatment with recovery of energy from an extract airstream. In the rotary arrangement, the wheel passes between the two air paths and transfers stored energy as it turns, reducing the thermal treatment needed for incoming ventilation air.
A sensible wheel primarily transfers heat. A suitable total-energy wheel can also transfer moisture through its coated medium. The recovery type is chosen to suit the application, while fan duty, filters, sealing and the relationship between the two airstreams are considered as part of the complete unit.
The catalogue shows recovery assemblies combined with filtration, mixing, cooling or heating, humidification and fan sections. This modular approach allows the ventilation and air-conditioning functions to be coordinated in a single project-specific arrangement.
PRODUCT DETAILS
Product Features
Integrated recovery stage
The recovery wheel uses the temperature difference between extract and outdoor air to exchange energy. It can reduce the load on selected downstream cooling or heating sections.
Sensible or total-energy selection
Different wheel media provide different recovery behaviour. Selecting the appropriate type is important when moisture transfer is relevant to the building’s operating conditions.
Configurable air-treatment sequence
Filter, mixing, coil, humidification and fan sections can be arranged around the recovery stage. The chosen sequence follows the required supply-air condition and the intended ventilation strategy.
Coordinated supply and extract fans
Both airstreams are considered during selection. Airflow, duct resistance and the pressure relationship around the recovery section are coordinated rather than treating each fan independently.
Rotor drive and sealing
The wheel, drive, casing and seals form a working assembly. Correct alignment, service access and an appropriate air-path arrangement support reliable operation and help limit unintended bypass.
Service and seasonal control
Filters, the wheel and the drive require accessible inspection and cleaning. In cold conditions, the control strategy must also consider frost risk and the selected recovery arrangement.
EQUIPMENT DETAILS
Technical Configuration
RNJK-E rotary heat-recovery AHU series.
| Item | Configuration |
|---|---|
| Catalogue airflow range | 1,000–200,000 m³/h for the RNJK-E family |
| Cabinet panel options | 25 / 30 / 50 mm catalogue options |
| Recovery section | Rotary wheel; sensible or total-energy media selected to duty |
| Functional sections | Cooling, heating and humidification options coordinated with the recovery section |
| Supply / extract fans | Selected for each airstream and its required external pressure |
| Overall dimensions and duty | Established by the selected wheel, fans, coils and cabinet layout |
The airflow range describes the catalogue family, not one fixed product rating. Confirm wheel media, air-stream suitability, leakage requirements, frost strategy and the final selection schedule.
WHERE IT WORKS
Applications
Suitable for commercial ventilation and central air-conditioning systems with usable extract air and a need for coordinated outdoor-air treatment. The recovery arrangement must be appropriate for the nature of the exhaust stream.
Specify supply and extract airflow, air conditions, recovery type, filtration and duct pressures. Exhaust compatibility and the required separation strategy should be reviewed before selecting a rotary recovery system.
Send Your Requirements →- Office and public buildings with regular ventilation demand.
- Hotels and commercial spaces operating long daily schedules.
- Central plant serving several indoor ventilation zones.
- Projects combining fresh-air conditioning with selected recovery functions.
RELATED EQUIPMENT
More in This Product Family
Ceiling-Mounted Heat Recovery Unit
A ceiling-mounted air handling unit combining fresh air treatment and heat recovery.
Ceiling-Mounted Fresh Air Handling Unit
Ceiling-mounted treatment and distribution of outdoor air.
Vertical Air Handling Unit
Vertical air handling equipment for plant rooms and floor-standing installations.
PROJECT INQUIRY
Discuss This Equipment
Tell us about your equipment requirements and installation conditions.
From cleaner air
to a better future.