Condensing boilers from Hoval

Hoval UltraGas condensing gas boilers are available in capacities from 50kW to 1000kW, while twin UltraGas units offer outputs from 250kW to 2000kW and come complete with common flue and optional pipework/header kits.

Independent testing (to DIN EN 676) confirms the average NOx emissions of the boilers are less than 40 mg/kWh – achieving the maximum BREEAM rating of three points relating to NOx emissions. Net efficiencies of up to 109.5% are also achieved, when tested to the requirements of the European Boiler Efficiency Directive, with CO levels of 10 mg/kWh.

Featuring Hoval’s Ultra Clean combustion system, 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.

Hoval actively encourages an on-going relationship with clients to ensure on-going support for the life of the boiler. The company’s service department provides technical support for clients, specifiers and installers.

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