Viessmann Vitopend 100-W-WH1D series gas wall boiler heating / hot water boiler Advantage 1: LCD liquid crystal display. Advantage 2: WH1D series gas wall boiler plate heat exchanger. Advantage 3: three-speed circulating pumps, arbitrary regulation. Advantage 4: heating / hot water dual-purpose, 24/30 / KW output power. Advantage 5: automatic bypass. Advantage 6: electric three-way valve. Advantage 7: Stainless steel plate heat exchanger can effectively prevent corrosion. Advantage 8: thermal efficiency is higher than 90%, the power adjustment range 30-100% Advantage 9: with a fault analysis system, a variety of security systems, the safety of the product more intelligent. Viessmann boiler WH1D Dimensions: 725 * W 400 * H 340 To purchase Viessmann gas boiler please contact WH1D import well-being of Equipment Co., Ltd. Hefei Yee