Hamworthy supplies direct replacement for traditional cast-iron boilers

Hamworthy, boiler, cast iron, space heating, hot water
Direct replacement for Hamworthy Purewell Classic atmospheric boilers — new Purewell VariHeat pre-mix condensing modular boilers at a boarding school in Dorset.

The refurbishment of boiler plant in one of 24 plant rooms at a boarding school in Dorset has seen three Hamworthy Purewell VariHeat pre-mix condensing boilers replace four Purewell Classic atmospheric boilers. Provision has been made for the installation of a fourth boiler in the summer when that area of Canford School is likely to be extended.

Rated at 70 kW each, the new boilers and a Powerstock PS3000 high-performance calorifier provide heating and hot water for the biology block of this 635-pupil school.

Purewell VariHeat boilers are commonly used in refurbishment projects because they have a greater tolerance of older heating systems, due to their robust cast-iron heat exchanger, which is fitted with a down-firing pre-mix modulating burner for close load matching.

Designed as a direct replacement for cast-iron atmospheric boilers such as the now obsolete Purewell Classic, the Purewell VariHeat fits on the same footprint but offers up to 50% more output and superior control capability. The new boilers are fully compliant with the anticipated efficiency requirements of the Energy Related Products Directive and able to link easily with the school’s BMS.

The new boilers were commissioned by a Hamworthy-approved service engineer.

For more information on this story, click here: March 2013, 80
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