WOLF wall and ceiling mounted air heaters

Economical heating

WOLF wall and ceiling mounted air heaters

Wall and ceiling mounted air heaters

WD-A units are heated with site-supplied warm water (PWW), hot water (PHW), thermal oil, or steam (custom design) and are available with two to four-row heat exchangers.

Depending on how the unit is equipped, it can switch between mixed air, fresh air and recirculating air operation manually or via a control unit.


 

Technical specifications at a glance

  • airflow rate up to 8950 m3/h
  • heat exchangers with up to 4 rows
  • heating capacity (air intake = 15 °C; PWW 90 / 70 °C) up to 103.7 kW
  • motor rating up to 750 W
  • power consumption up to 1.5 A
  • available as ceiling mounted and wall mounted air heaters
  • complete line of accessories
  • multiple control options
  • 5 motor versions available
  • optional finish

The drive for quality

A compact, extremely quiet and low-maintenance sickle-blade fan ensures
reliable, long-lasting operation. The special shape of the steel fan blades ensures an extremely low noise level. The drive is incorporated into the fan wheel and is available in 5 different motor versions. Depending on the version, the motors feature 2-stage, 5-stage, or stepless control. The fan fatigue life is over 100,000 hours of operation!

Air discharge

WD-A air heaters are available with manually adjustable directional louvers or with automatically adjustable energy saving louvers. When equipped with a discharge cone or energy saving louvers, WD-A air heaters can be used in rooms with ceiling heights above 5 m. For entryway air curtain applications, the unit is equipped with a discharge nozzle.

Automatic louver adjustment

Energy saving louvers driven by the 678 control unit prevent the air stream from drifting in cases where there is a high temperature differential between the primary air (from the WD-A) and the secon-dary air (indoor air). In the choke position  , an "aggregate air stream" is created by mixing indoor air with the warm air as it flows out. This serves to increase the temperature evenly throughout the room and saves energy. The control unit determines the difference between the required and the actual room temperature, and then activates the servomotor for the choke louver. Optionally, the louver can also be controlled using an expansion cylinder or an open/close button.

Temperature distribution

Even air distribution also means even temperature distribution in the room. An even room temperature not only increases the comfort factor, but is also frequently critical in production scenarios, e.g. in order to maintain tolerance values. Our WD-A air heaters satisfy these requirements perfectly: not only with their high performance fans and broad selection of discharge options, but also via control fine-tuning as needed. With our proven WD-A units, both the perceptible temperature fluctuations and airflow rates in the living area are extremely low. This almost completely eliminates the possibility of swirling dust and bacteria.

WD-U recirculating air unit

WD-U (recirculating air units) are also available with 5 different motor versions, but are designed purely for air recirculation. They do not contain heat exchangers.

Efficient and economical

Fan unit

The fan unit consists of an AC or EC axial fan with sickle-profile blades per ErP Directive 2015.
The axial fan is mounted on the rear wall of the housing and protected by a fine-mesh contact grille.

Heat exchangers

The heat exchangers are manufactured using corrosion-resistant copper piping with pressed-on, continuous, high performance aluminum fins (CuAl). The manifold is made from steel piping.

Alternative: Galvanized or stainless steel; Available with 2, 3, or 4-row heating coils, depending on heating requirements.

Housing

The housing is manufactured from high-grade galvanized steel plate and is optionally available in a RAL colored finish.

Electrical connection

The terminal box for the motor wiring is located in an easily accessible location on the outside of the unit housing.

Discharge louver

Discharge louver with adjustable directional air guides.
  • Fan unit

    The fan unit consists of an AC or EC axial fan with sickle-profile blades per ErP Directive 2015.
    The axial fan is mounted on the rear wall of the housing and protected by a fine-mesh contact grille.
  • Heat exchangers

    The heat exchangers are manufactured using corrosion-resistant copper piping with pressed-on, continuous, high performance aluminum fins (CuAl). The manifold is made from steel piping.

    Alternative: Galvanized or stainless steel; Available with 2, 3, or 4-row heating coils, depending on heating requirements.
  • Housing

    The housing is manufactured from high-grade galvanized steel plate and is optionally available in a RAL colored finish.
  • Electrical connection

    The terminal box for the motor wiring is located in an easily accessible location on the outside of the unit housing.
  • Discharge louver

    Discharge louver with adjustable directional air guides.

    Ceiling mounted air heaters

    Discharge louve 500

    Discharge louve 500

    (standard)

    Discharge version: ceiling, 2-sided
    360° manually adjustable louvers

    Discharge louver 500

    Discharge louver 500

    (standard)

    With substructure discharge louver 503
    Discharge version: ceiling, 4-sided
    2-sided, 90° offset
    Louvers manually adjustable inward

    Discharge louver 502

    Discharge louver 502

    (ceiling mount only)

    Discharge version: ceiling, 4-sided
    Louvers manually adjustable outward

    Deckenluftheizer Energiesparjalousie 506

    Energy saving louver 506

    Discharge version: ceiling, 2-sided
    With directional (LJ) and choke louver (DJ)

    LJ adjustable manually or via servomotor; DJ adjustable manually, by servomotor or by non-electrical expansion cylinder

    Deckenluftheizer Ausblaskonus 600

    Discharge cone 600

    Deckenluftheizer Ausblasdüse 610

    Discharge nozzle 610

    Wall mounted air heaters

    Ausblas­jalousie 500

    Discharge louver 500

    (standard)

    Discharge version: wall, 1-sided
    360° manually adjustable louvers

    Ausblas­jalousie 500

    Discharge louver 500

    (standard)

    With substructure discharge louver 503
    2-sided, 90° offset
    Discharge version: wall, 4-sided
    Louvers manually adjustable inward

    Ausblas­jalousie 504

    Induction louver 500

     

    Discharge version: wall, 1-sided
    Louvers manually adjustable outward

    Ausblas­jalousie 505

    Energy saving louver 505

    with directional (LJ) and choke louver (DJ)
    discharge version: wall, 1-sided

    LJ adjustable manually or via servomotor; DJ adjustable manually, by servomotor or by non-electrical expansion cylinder

    Accessories

    Our line of accessories includes wall and ceiling brackets, air ducts, elastic fasteners, filter parts, intake and discharge hoods, and electrical accessories (control devices, thermostats, servomotors, etc.).

    Control unit

    Up to 19 WD-A air heaters or WD-U recirculating air units can be operated with a single control device. Depending on the version, the motors feature 2-stage, 5-stage or stepless control, allowing them to cover a wide range of applications.

    The temperature can be controlled based on the room temperature, the time, or a combination of time and room temperature conditions.

    Cookies make it easier for us to provide you with our services. With the usage of our services you permit us to use cookies.
    More information Ok