STIEBEL ELTRON launches innovative internal air source unit with integral MHVR
Billed as a “plant room in a box” the new unit offers heating, cooling, ventilation and air purification out of the box, whilst taking up minimal floorspace.
Hot water provision just requires the addition of your choice of hot water cylinder to match your project, allowing for maximum comfort and space and energy efficiency, bringing the tally of LWZ's functions to five
Cooling comes as standard through the emitter system (underfloor or fan coils) but also via the MVHR with the addition of an accessory fitted neatly to the top of casing, so that no additional footprint is required in your plant room (see installed image).
Behind the elegant casing of the LWZ lies the latest technology for top-class efficiency. Heat in the extract air (that is usually wasted in standard MVHR systems) is used to increase efficiency of the Heat Pump, defrosting processes are minimized and energy requirements are reduced to an absolute minimum. A preheat of the fresh air using a byproduct of energy from the Heat Pump system further elevates the efficiency of the ventilation system.
As well as integration of Solar PV/Thermal systems the LWZ is compatible with energy management systems for photovoltaic integration to increase efficiencies even further.
Installers will be glad of the flexible installation options (right or left-handed) and the quick installation of the outside and exhaust air ducts using hose sets with adapter plates.
Managing Director John Felgate said, “LWZ is ideal for new build properties looking for a sleek and cutting edge all-in-one building services solution that has nonetheless an impressive track result of success.
“Whilst this hpnext iteration of the LWZ features a host of design upgrades and efficiency improvements, our first LWZ units were launched 25 years ago and have been a flagship product in Europe ever since. Now that the UK market for domestic heat pumps and ventilation is maturing and the Future Homes Standard is requiring new homes to choose low carbon heating we feel that it is the perfect time to launch this product here.”
The LWZ 07.1 offers a heat output at A-7/W35 (EN 14511) of 6.42 kW and cooling capacity at A35/W7 of 2.69 kW. It can achieve heat recovery up to 92% and supply an air/exhaust air volume flow of 80-300 m³/h. At a sound power level (EN 12102) of 50 dB(A) it delivers whisper-quiet operation and the advantage of no outdoor equipment being needed.