KEY TO SYMBOLS AND SAFETY PRECAUTIONS
6 720 645 222a (2012/05)
5
British Standards:
Where no specific instruction is given, reference should
be made to the relevant British Standard codes of
Practice.
BS7074:1 Code of practice for domestic and hot water
supply
BS6891 Installation of low pressure gas pipe work up
to 28mm (R1)
BS5546 Installation of gas hot water supplies for
domestic purposes
EN12828 Central heating for domestic premises
BS5440:1 Flues and ventilation for gas appliances of
rated heating not exceeding 70kW (net) :
Flues
BS5440:2 Flues and ventilation for gas appliances of
rated heating not exceeding 70kW (net) : Air
Supply
BS7593 Treatment of water in domestic hot water
central heating systems
BS6798 Installation of gas fired boilers of rated input
up to 70kW (net)
Irish Standards
The relevant Irish standards should be followed,
including:
•
ECTI National rules for electrical installations
•
IS 813:2002 for Domestic Gas Installations.
LPG Installations
An appliance using L.P.G. must not be installed in a room
or internal space below ground level unless one side of
the building is open to the ground.
Timber framed building
:
Where the boiler is to be fitted to a timber framed
building the guidelines laid down in BS5440: Part 1 and
IGE "Gas Installations in Timber Frame Buildings” should
be adhered to.
Potable water:
All seals, joints and compounds (including flux and
solder) and components used as part of the secondary
domestic water system must be approved by WRAS.
CH Water:
Artificially softened water must not be used to fill the
central heating system.
