High efficiency, low emmissions November 1st 2006 Hoval says that its Ultragas premix condensing gas boilers are designed to couple high efficiency with low emissions and low cost of ownership. Featuring Hoval's Ultra Clean combustion system, they are available in fourteen sizes with maximum outputs between 50 and 650 kW. Twin UltraGas units available with outputs of 250- 1300kW, complete with common flue and optional pipework/header kits. The boilers use a modulating pre-mix down firing burner with up to 6:1 turndown (12:1 on twin units) and a stainless steel combustion chamber with a single pass aluFer tube heat exchanger. The aluFer tubes are also made of stainless steel with an aluminium alloy finned internal surface to provide a high surface area for heat exchange. More articles from Hoval Limited: |