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The Renewable Heat Incentive Scheme Regulations 2018

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Electricity metering in respect of ground source and air source heat pumps in respect of which the application for accreditation is made on or after 28th May 2014 and shared ground loop systems

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25.—(1) This regulation applies to any ground source heat pump or air source heat pump in respect of which an application for accreditation is made on or after 28th May 2014 and to shared ground loop systems.

(2) Where this regulation applies to a ground source heat pump or air source heat pump, the following meters must be installed—

(a)such electricity meters as will enable the seasonal performance factor of the heat pump to be determined to the satisfaction of the Authority;

(b)in the case of a ground source heat pump, where that heat pump is capable of simultaneous heating and cooling, such metering as will enable the heat drawn from the ground, including water in the ground, or from surface water, to be measured.

(3) Where this regulation applies to a shared ground loop system—

(a)paragraph (2)(a) applies in respect of each ground source heat pump which forms part of the shared ground loop system for which heat is required to be metered under regulation 24;

(b)where heat generated by a ground source heat pump which forms part of the shared ground loop system is not required to be metered under regulation 24, such electricity meters must be installed as will enable the electrical input into the ground source heat pumps to be metered;

(c)paragraph (2)(b) applies in respect of the ground loop where any of the ground source heat pumps which form part of the shared ground loop system is capable of simultaneous heating and cooling;

(d)where a ground source heat pump is installed in domestic premises—

(i)such electricity meters must be installed as will enable the measurement of the electrical input into—

(aa)any supplementary electric heater that is controlled by the same control system which governs the ground source heat pump; or

(bb)any immersion heater for a domestic hot water cylinder where the heater is controlled by the same control system which governs the ground source heat pump; and

(ii)any electricity meter installed in accordance with paragraph (i) which is not an on-board meter, must—

(aa)be properly calibrated;

(bb)be properly installed by, or under the responsibility of, a certified installer;

(cc)be in good working order; and

(dd)bear a label which identifies the ground source heat pump, supplementary electric heater or immersion heater being metered; and

(e)such electricity meters must be installed as will enable the electrical input into any ground loop circulation pump to be measured, and those which are not on-board meters must—

(i)be properly calibrated;

(ii)be properly installed;

(iii)be in good working order; and

(iv)bear a label which identifies the circulation pump being metered.

(4) An electricity meter installed in accordance with paragraph (3) in domestic premises must, except in the case of an on-board meter, meet the relevant requirements set out in Annex 1 to the Measuring Instruments Directive, the specific requirements listed in Annex V (Active electrical energy meters (MI-003)) to that Directive and the requirements for accuracy class A as defined in Annex V to that Directive.

(5) In this regulation, “on-board meter” means an electricity meter which is integrated into a ground source heat pump and is able to display the electricity consumption, in kWh, of the ground source heat pump, including where applicable, the electricity consumption of a ground loop circulation pump contained within it.

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