HEAT PUMPS
Stiebel Eltron LWZ 07.1 Premium HKL 230 with SBB 300 hot water tank and optional cooling module for MHVR.
INSTALLERS WILL APPRECIATE LEFT OR RIGHT-HANDED INSTALLATION OPTIONS AND QUICK INSTALLATION OF OUTSIDE AND EXHAUST AIR DUCTS USING HOSE SETS WITH ADAPTER PLATES… Stiebel Eltron launches innovative internal air-source unit with integral MHVR
Stiebel Eltron has launched the LWZ 07.1 Premium HKL 230 as part of its hpnext generation of heat pumps, which includes new monobloc air-source and ground-source units. Billed as a ‘plant room in a box’, the new unit offers heating, cooling, ventilation and air purification out of the box, while 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. Cooling is as standard through the emitter system (underfloor and fan coils) but also via the MVHR with the addition of an accessory fitted neatly to the top of casing, with no additional footprint required in your plant room (see image). Behind the elegant casing of the LWZ lies the latest technology for top-class efficiency. Heat in the extract air (usually wasted in standard MVHR systems)
is used to increase efficiency of the heat pump, defrosting processes are minimised 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 appreciate flexible left- or right-handed installation options and quick installation of the outside and exhaust air ducts using hose sets with adapter plates. John Felgate, Managing Director, 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 6.42kW and cooling capacity at A35/W7 of 2.69kW. 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 requiring no outdoor equipment. For more information and to book into a live online briefing on the LWZ and full hpnext range, visit www.stiebel-eltron.co.uk/hpnextlaunch
PLUMBING & HEATING MAGAZINE | 65
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