Centralized ventilation unit LWA 252
residentialfor homesfor apartments

centralized ventilation unit
centralized ventilation unit
centralized ventilation unit
centralized ventilation unit
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for homes, for apartments
Air flow

Min.: 80 m³/h (2,825.2 ft³/h)

Max.: 400 m³/h (14,125.9 ft³/h)


Compact device offering the following functions: Ventilation and DHW heating Thermal insulation with low heat losses Ventilation and DHW program Can also be combined with a solar heating system (SOL version) Product details The LWA 252 central ventilation device was specifically designed for apartments and houses from 100 m². It represents an excellent addition to a second heat source and is therefore also ideally suited for retrofitting. The system generates a slight negative pressure in connected rooms, drawing the fresh air that is supplied from a decentralised location through air supply valves. A heat pump inside the unit recovers the thermal energy from the extract air and feeds it into the permanently integrated 300 litre cylinder. The decentralised air supply allows the installation to be carried out without a large proportion of the normally required ductwork. This obviously reduces the outlay for installation. Nevertheless, this process is extremely efficient, as the energy discharged with the extract air is used to heat the domestic hot water. The LWA 252 SOL ventilation unit is also perfect for combining with a solar heating system. Product Number 074264 Width 696 mm Height 1860 mm Depth 735 mm Air flow rate 80-400 m³/h Technical data Energy efficiency class, DHW heating (extract air), load profile XL A+ Rated capacity 300 l HP DHW temperature 60 °C Max. DHW temperature 70 °C Electric emergency/booster heater 1,5 kW Nominal DHW temperature (EN 16147) 55 °C Nominal load profile (EN16147) XL Maximum available amount of DHW at 40 °C (EN 16147 / A20 extract air) 412 l Average heating output (EN 16147 / A20 extract air) 1,4 kW


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