For more than 60 years products from our house ensure the right temperatures. Through path- breaking developments in the field of refrigeration and air- conditioning engineering we have gained worldwide recognition.

Our product range covers unit air coolers, fan coils and finned heat exchangers. We only produce at our company located in Gerlingen near Stuttgart.

Fan Coil Units
Air Coolers
Heat Exchangers

HKNI 1400 is considered to be the probably largest fan coil in the world. The series of HKN/D/I/L 800- 1400 consists of four basic units that can be equipped with different fans according to your needs.

Standard design

The definition of a standard design is rather difficult as there are 6 variants of heat exchangers available as a standard:

  • Variant 1: Dual- circuit heat exchanger: Cooling by cold water, heating by hot water.
  • Variant 2: Dual- circuit heat exchanger: Cooling be refrigerant, heating by hot water.
  • Variant 3: Single- circuit heat exchanger: Cooling by cold water, heating by electric heater.
  • Variant 4: Single- circuit heat exchanger: Cooling by refrigerant, heating by electric heater.
  • Variant 5: Single- circuit heat exchanger: Cooling by cold water, heating by hot with Change over.
  • Variant 7: Single- circuit heat exchanger: Cooling by refrigerant.

 

Radial fan:

230 V 50/ 60 Hz, internal wired thermo contact, made of plastic material. The I(ndustry) version consists of reinforced fans compared to the more silent L- version.

Available options:

  • External thermo- contact.
  • EC fans.
  • Fans and housing made of sheet.

Air filter:

Filter class G3 acc. to EN 779. Filter according to VDI 6022, class M5 respectively F7 are available on request.

Housing:

The housing is available in two colors: White (similar RAL 9010) and light- grey (RAL 7035). Other colors are available on request. Optional there are:

  • Detachable side parts
  • Stainless steel casing
  • Rear or back cover plates

Mixing air device:

The mixing air device can provide variable air inlet from 30 % to 100 % outdoor air. Additional an anti- freeze protection is installed to protect the heat exchanger from outdoor temperatures below the freezing point.

Electric booster heater:

Up to three booster heaters are installed in front of the heat exchanger. Two overheat cut- off devices with manual reset, one contactor wired to terminal box.

Condensate pumps:

The standard condensate pump is designed for a maximum of 2 m height difference and 10 m tube length. Power input: 21 W, sound pressure < 34 dB(A) in 1 m.

Protection against corrosion:

For fan coils we can provide two types of protection against corrosion:

  • Protection against corrosion type G
    Prelaquered fins, tin coated copper tubes, side parts of heat exchanger laquered with 2 component lacquer
  • Protection against corrosion type E
    Copper/ copper heat exchanger with antimicrobial benefits.