Bristan Blitz BTZ BAS C Petunjuk Pemasangan & Panduan Pengguna - Halaman 6
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Installation Requirements
IMPORTANT - PLEASE READ
This/these fitting/fittings needs/need to be
installed in accordance with the following
Installation Requirements and Notes (IRN)
to ensure they meet the requirements of
the Water Supply (Water Fittings)
Regulations 1999 and the Scottish Byelaws
2004.
IRN R001 - BTZ ½ C, BTZ ¾ C, BTZ BAS C,
BTZ BF C, BTZ BSM C
See text of entry for Installation
Requirements or Notes.
IRN R005 – BTZ BF C, BTZ BSM C
This tap or combination tap assembly has a
Type AUK2 air gap and is therefore only
suitable for installation in domestic premises
or in other premises to protect against a
backflow risk up to a Fluid Category 3, unless
additional backflow protection for the higher
risk is included in the installation.
IRN R006 – BTZ ½ C, BTZ ¾ C, BTZ BAS C
This tap or combination tap is installed so
that its base is no lower than the spillover
level of the receiving vessel (for example, a
sink or washbasin), a Type AUK3 air gap is
achieved which permits installation of the tap
in any premises where backflow protection up
to Fluid Category 5 is required at the tap.
IRN R010 – BTZ BAS C, BTZ BF C -
Schedule 2-15 (1)
Water supplies shall be a reasonably
balanced pressures from a common source
(e.g. hot and cold supplies both from the
same storage or both from a supply pipe).
Where the fitting is supplied from unbalanced
supplies (e.g. hot and cold supplies from
separate sources) a 'Listed' single check
valve or some other no less effective backflow
prevention device shall be fitted immediately
upstream of both hot and cold water inlets.
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IRN R030 – BTZ BSM C - Schedule 2-15
(1) Multiple inlet fittings installed in
domestic premises or in other premises to
protect against a backflow risk up to a Fluid
Category 3, incorporating a self cancelling
diverter acceptable as a backflow prevention
device (HC) and having an AUK2 or AUK3 air
gap, shall be installed in accordance with
IRN R010.
Multiple inlet fittings installed in premises
other than domestic to protect against a
backflow risk up to a Fluid Category 5,
incorporating a self cancelling diverter
acceptable as a backflow prevention device
(HC only) and having an AUK2 or AUK3 air
gap, shall be installed in accordance with
IRN R010. Alternatively the fitting shall be
supplied in accordance with IRN R040 unless
the shower head is constrained above the
spill-over lever of the bath, wash basin or
shower tray.