Ofgem RHI applications require a schematic diagram of the installation and the heating system of which it forms part during the accrediation process.  This diagram will form a key part of the application for accreditation.

The schematic diagram will need clearly to show, as appropriate to the heating system of which the installation forms part:
 

• the relative positions of the eligible installation(s) (including any component plants), any ineligible plant(s), eligible heat use(s), any ineligible heat use(s) and heat rejection facility/facilities.
• the relevant pipework connections between all plants within the eligible installation(s)
• the relevant pipework connections between all eligible installations, all ineligible plants and eligible or ineligible uses of heat, and
• the releative positions of the relevant heat and steam meters and their associated components.

With regards to metering arrangements, the schematic diagram (including a key) must clearly show for each meter used for RHI purposes, as appropriate:

• the meter sub components' positions, i.e. positions of temperature sensors, pressure sensors, flow meters and any flow conditioners/straighteners
• which measurements will be combined by the calculator/digital integrator to generate the meter reading
• the meter serial number as listed in the applicant's application for accreditation

Typical Schematic Diagram (360kb)