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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

WOLF 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

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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.

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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
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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)

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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
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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
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CRL Evo max - Superseal

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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Technical Data

CRL evo - Variant iH  / for indoor installation
Type
CRL
1.300 evo
1.750 evo
2.600 evo
3.200 evo
4.200 evo
4.900 evo
Air volume
m³/h
1.300
1.750
2.600
3.200
4.200
4.900
variant
iH
iH
iH
iH
iH
iH
Total length L
mm
1552
1552
1654
1654
1688
1688
Depth T incl. closures / roof
mm
745
745
948
948
1151
1151
Total height H
mm
1336
1336
1743
1743
1743
1743
Electric heater output (optional)
kW
4
4
8
8
12
12
Unit segmentation
None
None
None
None
2‑part
2‑part

Technical Data

CRL evo - Variant iH  / for indoor installation
    Type (CRL)
    1.300 evo
    1.750 evo
    2.600 evo
    3.200 evo
    4.200 evo
    4.900 evo
    Air volume (m³/h)
    1.300
    1.750
    2.600
    3.200
    4.200
    4.900
    variant
    iH
    iH
    iH
    iH
    iH
    iH
    Total length L (mm)
    1552
    1552
    1654
    1654
    1688
    1688
    Depth T incl. closures / roof (mm)
    745
    745
    948
    948
    1151
    1151
    Total height H (mm)
    1336
    1336
    1743
    1743
    1743
    1743
    Electric heater output (optional) (kW)
    4
    4
    8
    8
    12
    12
    Unit segmentation
    None
    None
    None
    None
    2‑part
    2‑part
    CRL evo - Variant A / suitable for outdoor installation
    Type
    CRL
    1.300 evo
    1.750 evo
    2.600 evo
    3.200 evo
    4.200 evo
    4.900 evo
    Air volume
    m³/h
    1.300
    1.750
    2.600
    3.200
    4.200
    4.900
    Variant
    A
    A
    A
    A
    A
    A
    Total Length L
    mm
    1817
    1817
    1918
    1918
    1918
    1918
    Depth T incl. closures / roof
    mm
    814
    814
    1016
    1016
    1151
    1151
    Total height H
    mm
    1481
    1481
    1888
    1888
    1888
    1888
    Electric heater output (optional)
    kW
    4
    4
    8
    8
    12
    12
    Unit segmentation
    None
    None
    None
    None
    None
    None
    CRL evo - Variant A / suitable for outdoor installation
      Type (CRL)
      1.300 evo
      1.750 evo
      2.600 evo
      3.200 evo
      4.200 evo
      4.900 evo
      Air volume (m³/h)
      1.300
      1.750
      2.600
      3.200
      4.200
      4.900
      Variant
      A
      A
      A
      A
      A
      A
      Total Length L (mm)
      1817
      1817
      1918
      1918
      1918
      1918
      Depth T incl. closures / roof (mm)
      814
      814
      1016
      1016
      1151
      1151
      Total height H (mm)
      1481
      1481
      1888
      1888
      1888
      1888
      Electric heater output (optional) (kW)
      4
      4
      8
      8
      12
      12
      Unit segmentation
      None
      None
      None
      None
      None
      None
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        • Working for your customers 7 days a week: 
          An extensive network of highly trained service technicians and expert back office staff – seven days a week. Our Customer Service department provides fast and reliable support for your business and always makes a good impression on your customers. 

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        • Difficult site conditions for engineers and installers? WOLF offers just the right answer: the Easy Lifting System. It makes transport onto or into a building much easier, and the installation of these functional units becomes quicker and more accurate. It’s so simple that even our largest components, such as thermal wheel or plate heat exchangers, can be easily brought into any building or positioned on the roof.

          The Easy Lifting system also makes a great contribution to the hygiene of WOLF AHU appliances. The intelligent connection and transportation technology virtually eliminates the risk of leakages in heat exchangers or appliance modules caused by installation errors.

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        • Our unique synergy of software and products is unrivalled in the industry.
          It makes our appliance configurations highly adaptable, our production methods efficient
          and also keeps our delivery times remarkably short.

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