Installation manual

2
WARNINGS
Persons carrying out installation work on the Rinnai Twin Flow require the following
certificates
For any gas work carried out: Registration in proof of competence scheme. At time of writing
CORGI is the only acceptable body. ACS certification must also be up to date.
The Twin Flow hot water system is not covered by Building Regulations Part G3 unless it is
a closed system such as one piped with a secondary return system. If there is a secondary
return then the installer must be able to show proof of G3 competence, which can be shown
through a Registered Operative Identity Card for the installation of Unvented Domestic Hot
Water Systems or the Association of Installers of Unvented Hot Water Systems (Scotland
and Northern Ireland.)
The Twin Flow system, when used with the prewired Back plate and moulded plug does not
require the installer to have any special electrical qualification. If the back plate is not used,
or additional wiring is carried out then the installer must be able to show competence in the
installation of electrical wiring which can be shown through: EIC certification. IEE 17th
Edition, or Part P.
Building Regulation G3 draws attention to the Building Regulations 1991, especially
Regulation 11(1), 12(4), and 13(3). The following is quoted from these and Building
Regulation G3.
A person who intends to carry out building work or to make a material
change of use shall--
give to the local authority full plans and a building notice accompanied by a
statement which specifies:
a: the name, make, model and type of hot water storage system to be
installed
b: the name of the body, if any, which has approved or certified that the
system is capable of performing in a way which satisfies the requirements of
paragraph G3 of Schedule 1.*
c: the name of the body, if any, which has issued any current registered
operative identity card to the installer or proposed installer of the system.
The full plans shall consist of a description of the proposed building work or
material change of use, and the plans, particulars and statements required.
This can now be satisfied through a notification Self-Certification scheme.
It is the responsibility of the installer to make sure that proper certification has been gained,
and that the system is installed to the necessary regulations and instructions within this
installation manual.
Additionally the installation must be carried out to the requirements of
Building Regulations issued by the Department of the Environment
Building Standards (Scotland) Regulations.
I.E.E. Wiring regulations for electrical installations.
BS 6700
Local byelaws
Water regulations
Health and safety at work etc. Act 1974
Such other specifications and regulations that may supersede or complement the above
documents. Additional documents listed in the Infinity water heater manual.