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Case Study: Domestic Retrofit | 50kW Biomass Pellet Boiler for Kentish Oast House

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Flue
Boiler and hot water cylinder
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Pellet hopper
Pellets
as seen through hopper window
Pellet hopper close up
Pellet hopper close up

Mr & Mrs T of Wadhurst needed a new heating system for their attractive converted oast house. Their property consists of a main house, and separately council tax banded offices and annex. The main property was supplied by a time served oil boiler, and the granny annex and office by inadequate night storage radiators. The project briefly included the design and installation of the boiler, pellet store, district heat main to supply the offices and annex, installation of new radiators, hot water cylinder and controls for the office/annex. The scheme was fitted with heat meters to claim financial support under the non-domestic RHI scheme.

A prefabricated weatherproof pellet store was discreetly hidden behind the garage with automatic pellet feed to the boiler via pneumatic transfer, to a day hopper on the boiler. This system is fully automatic and under the control of the boiler.

A heat exchanger for the swimming pool was installed to enable it to be heated from the biomass boiler at a future date.

Distribution of heat to the various parts of the property was by insulated heat main with RHI meters at all points of use to enable the RHI payments to be calculated and claimed.