Metering of plants in complex systems where application for accreditation of the plant was made before 24th September 2013E+W+S
22.—(1) This regulation applies to a plant where regulation 21 does not apply and the application for accreditation of the plant was made before 24th September 2013.
(2) Subject to regulation 27—
(a)where heat generated by the plant is delivered by liquid, class 2 heat meters must be installed to measure both the kWhth of heat generated by that plant and the kWhth of heat used for eligible purposes by the heating system of which that plant forms part; and
(b)where heat generated by the plant is delivered by steam, the following must be installed—
(i)steam measuring equipment to measure both the heat generated in the form of steam by the plant and the heat in the form of steam used for eligible purposes; and
(ii)a class 2 heat meter or steam measuring equipment to measure any condensate or steam which returns to the plant.
(3) Where this regulation applies, and more than one plant is supplying heat to the heating system supplied by the plant, steam measuring equipment or class 2 heat meters must be installed, as appropriate, to measure the heat generated in kWhth by all plants supplying heat to that heating system.