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Heating and Cooling / Facade Heating & Cooling Products

Ventilation unit recirculated air for mixing ventilation LG-UM-M-LB, for horizontal floor mounting

To ventilate office and administrative buildings that have façades with floo-to-ceiling glazing, Krantz supplies a ventilation unit work- ing with recirculated air and designed for raised floor mounting; this compact unit with high output is able to remove the internal cooling and heating loads resulting from the large glazed area.


  • Cooling and heating at the facade; unit mounted in raised floor
  • Maximum energy saving thanks to energy-efficient cross-flow fan
  • Recirculated air volume flow rate up to 97 l/s [350 m3/h]
  • Cooling output up to 700 W
  • Low sound power level
  • Ideal in conjunction with a floor-mounted supply air ventilation unit providing a minimum percentage of outdoor air
  • Feet adjustable in height to make up for vertical constructional tolerances
  • Optionally fitted with flexible connection hoses, valves and actuators


Air volume flow rate:

55 – 97 l/s [200 – 350 m3/h] (continuous control)

Cooling output:

700 W

Supply air temperature:

18.5 °C

Chilled water temperature:

15 / 17 °C

Heating output:

1 515 W

Supply air temperature:

35 °C

Hot water temperature:

50 / 40 °C

Control voltage for fan speed:

10 V DC

Operating voltage:

230 V / 50 Hz

Total power requirement (design value):

6 VA

To find out how you could benefit from our product, talk to an expert today on 0203 912 6222 or fill out the form below