CRL evo Compact Ventilation Unit Series

Compact ventilation units with rotary heat exchanger

“For indoor and outdoor installation, providing a pleasant indoor climate—for example in small office buildings, medical centers, or childcare facilities.

The compact air handling unit with rotary heat exchanger

PROKLIMA CRL evo

Reliable and highly efficient ventilation, dehumidification, heating, and cooling in a compact footprint. Eurovent-certified.

Dehumidifying, heating, and cooling for rooms with high occupancy: compact, energy‑efficient, and easy‑to‑install ventilation units with rotary heat exchanger for small office buildings, hotels, medical centers, doctors’ practices, childcare facilities, etc. – optimized for minimal installation space and maximum comfort.

► For air volumes from 1,300 to 4,900 m³/h

Benefits at a Glance:

The units are equipped with the latest generation of EC fans, a full-featured control system, and long‑lasting bag filters. Five unit sizes each for indoor and outdoor installation cover the air volume flows required in small commercial, hotel, and public buildings. Thanks to pre-installed piping and wiring, they are fully plug‑and‑play and can be connected and commissioned quickly and easily. They utilize free cooling as well as water-based cooling and heating modules, electrically integrable heating modules, and Clima‑Split heat pump technology.

Low energy consumption

State‑of‑the‑art, infinitely variable, energy‑efficient IE5 EC fans from leading European manufacturers. Integrated measuring system for determining th air volume flow
The standard unit can be individually configured: Options include water-based cooling and heating modules, as well as additional infinitely variable electric heating modules and energy monitoring
Optional: Clima‑Split systems for heating and/or cooling, which can optionally be mounted on a common base frame together with the air handling unit
Efficiency > 80 percent according to EN 308

Control system

Plug & Play thanks to fully pre-installed
Factory-tested control cabinet with LCD display and integrated digital control, providing continuous climate regulation. The customized WOLF software ensures perfect interaction between all components
Remote access via web browser enables detailed configuration, changes to operating modes, and data point logging. Compatible with WOLF Smartset, Link Pro, and BMS systems via Modbus, BACnet/IP, LON, or web module.
Can be retrofitted and expanded at any time, individually and as needed
Optional: simple energy monitoring via the control module or the Smartset portal (including consumption display per component group)

Hygiene

Design compliant with the applicable hygiene guidelines VDI 6022 and VDI 3803
Bag filters (supply air filters up to ePM1 85% (F9)) with long service life and a quick‑release filter system
Easy access for cleaning and maintenance (Flip & Clean silencer, quick‑release filter systems that neither absorb nor retain moisture), as well as smooth and even floors
Optional: second filter stage, filter monitoring via differential pressure sensor or switch

Housing

The compact CRL evo ventilation units fit through small installation openings and into small technical rooms and are available in different casing versions for the same air volume performance; divisible from 4,200 m³/h
Complies with L1; D1; T2; TB2; F9 and is non-combustible according to building material class DIN 4102: A1 (tested by TÜV Süd in accordance with DIN EN 1886)
Optional: spring-return actuator for dampers
Outdoor version fully powder‑coated inside and outside for corrosion protection
Modular design for flexible expansion

Heat recovery

A wide selection of rotary heat exchangers (condensation heat exchangers, enthalpy heat exchangers, or sorption heat exchangers) ensures maximum heat recovery combined with optimal energy efficiency and effective humidity management
Optional: labyrinth seal with an air‑tightness level of > 98%, exceeding Class 1 of DIN EN 16798‑3 b with reference to the outdoor air correction factor

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