On Saturday, 14 April 2018 01:12:09 UTC+1, Roger Hayter wrote:
I rather like the idea of an unvented certificate. Is that really it's
name?

https://www.gledhill.net/trade/g3-un...aining-course/

It was called G3 Unvented Hot Water but it's now been overtaken by changes in Building Regs and the certificate now covers all hot water systems.

England/Wales covers Approved Document G3, Part L1 and Part P of the Building Regulations, while the one for Scotland references Part J of the Building Standards

http://bpec.org.uk/qualification/dom...orage-systems/

Also, if not a member of a Competent Persons scheme, notification to Building Control is required.

Owain