Education & Training Matters

WRAS
need to be additional fittings installed,
such as a single or double check valve on
the water inlet pipe to ensure correct backflow
protection.
To provide installers with the necessary
information to ensure regulations’
compliance for individual products, entries
for products in the Directory include
Installation Requirements and Notes
(IRNs). These installation conditions must
be followed if the product is to comply with
the legal requirements of the regulations.
Failure to install an approved product in
accordance with an accompanying IRN
will invalidate the product’s approval. So,
for the earlier examples, IRN R009 states
‘Inlet supply hoses to be installed where
light is excluded’ and IRN R155 says ‘An
Approved’ single check valve must be
fitted as close as possible to the T-off
supplying the device.
Below is an example of a WRAS Approved
Product entry in the Water Fittings and
Materials Directory.
Some of the information in IRNs is taken
from Schedule 2 to the Water Fittings
Regulations and from the WRAS Water
Regulations Guide.
Several of the IRNs specify backflow
prevention needs for taps in locations
presenting different fluid category risks
of contamination. Although the tap itself
performs correctly, if it’s installed without
a sufficient airgap between the spout and
the receiving vessel (sink, sluice, cistern
etc.) then backflow can occur. IRNs
remind the installer of the requirements.
By choosing WRAS Approved products
and following the Installation Requirements
and Notes provided with the
approval, installers can be reassured that
the fittings they are installing will meet the
requirements of the regulations.
WaterSafe
The WaterSafe Installers’ Scheme
promotes compliance with the regulations,
26 Summer 2015 ETM