Technical Selection LG-Z-M-LB (in German only)
5.2.1. Ventilation units for mixing ventilation LG-Z-M-LB and LG-ZUM-M-LB, for horizontal floor mounting
Decentralized air conditioning via the building facade.
To air condition office and administrative buildings having facades with floor-to-ceiling glazing, Krantz supplies ventilation units for raised floor mounting; they provide the required minimum percentage of outdoor air and remove the internal cooling and heating loads. The unit type LG-ZUM-M-LB has an additional function with recirculated air.
Data
Supply air volume flow rate | 33 l/s [120 m3/h] |
Supply air temperature, summer |
18 °C (with outdoor air 32 °C / 40% relative humidity) |
Total cooling output: including | 560 W |
– for cooling down 33 l/s [120 m3/h] of outdoor air | 240 W |
– for cooling a room with tR = 26 °C | 320 W |
Chilled water temperature | 15 / 17 °C |
Supply air temperature, winter | 34 °C (with outdoor air –12 °C) |
Total heating Output: including | 1 840 W |
– for heating up 33 l/s [120 m3/h] tR = 22 °C of outdoor air |
1 360 W |
– for room heating with tR = 22 °C | 480 W |
Hot water temperature | 50 / 40 °C |
Control signal for fan speed | 0 – 10 V DC |
Effective power of fan | 20 W (for volume flow rate = 33 l/s [120 m³/h]) |
Operating voltage | 230 V / 50 Hz |
Features
- Outdoor air intake directly through the facade; return air extraction via central system
- Cooling and heating via air-to-water heat exchanger
- Cooling with outdoor air (free cooling)
- Mixing & displacement ventilation close to facade
- Energy-efficient EC radial-flow fan
- F7 class filtration of outdoor air