Installation Require ents & Notes
Installation Require ents & NotesInstallation Require ents & Notes
Installation Require ents & Notes
These fittings need to be installed in
These fittings need to be installed in These fittings need to be installed in
These fittings need to be installed in
accordance with the following Installation
accordance with the following Installation accordance with the following Installation
accordance with the following Installation
Require ents and Notes (IRN) to ensure
Require ents and Notes (IRN) to ensure Require ents and Notes (IRN) to ensure
Require ents and Notes (IRN) to ensure
they eet the require ents of the Water
they eet the require ents of the Water they eet the require ents of the Water
they eet the require ents of the Water
Supply (Water Fittings) Regulations 1999
Supply (Water Fittings) Regulations 1999 Supply (Water Fittings) Regulations 1999
Supply (Water Fittings) Regulations 1999
and the Scottish Byelaws 2004.
and the Scottish Byelaws 2004.and the Scottish Byelaws 2004.
and the Scottish Byelaws 2004.
IRN R001:
IRN R001: IRN R001:
IRN R001: See text of entry for Installation
Require ents or Notes.
IRN R010:
IRN R010: IRN R010:
IRN R010: -
--
- Schedule 2
Schedule 2Schedule 2
Schedule 2–
––
–15 (1) :
15 (1) : 15 (1) :
15 (1) : Water
supplies shall be a reasonably balanced
pressures fro a co on source (e.g. hot
and cold supplies both fro the sa e
storage or both fro a supply pipe). Where
the fitting is supplied fro unbalanced
supplies (e.g. hot and cold supplies fro
separate sources) a ‘Listed’ single check
‘Listed’ single check ‘Listed’ single check
‘Listed’ single check
valve
valvevalve
valve or so e other no less effective
backflow prevention device shall be fitted
i ediately upstrea of both hot and cold
For backflow protection in pre ises or
For backflow protection in pre ises or For backflow protection in pre ises or
For backflow protection in pre ises or
installations up to, and including Fluid
installations up to, and including Fluid installations up to, and including Fluid
installations up to, and including Fluid
Category 5.
Category 5.Category 5.
Category 5.
The vertical distance of the outlet above
the spill-over level shall be not less than
20 or twice the dia eter of the inlet
pipe to the fitting, which ever is the
greater. If the fitting cannot be installed
as indicated it shall be installed with a
backflow prevention arrange ent
suitable for the Fluid Category.
Size of tap or
Size of tap or Size of tap or
Size of tap or
co bination fitting.
co bination fitting.co bination fitting.
co bination fitting.
Vertical distance
Vertical distance Vertical distance
Vertical distance
of outlet above
of outlet above of outlet above
of outlet above
spill
spillspill
spill-
--
-over level.
over level.over level.
over level.
1. Not exceeding 1/2
in
20
2.
2.2.
2. Exceeding 1/2 in
25
IRN R040:
IRN R040: IRN R040:
IRN R040: -
--
- Schedule 2
Schedule 2Schedule 2
Schedule 2-
--
-15 (1):
15 (1): 15 (1):
15 (1): The
fitting shall be installed so that its outlet
discharges above the spill-over level of
any fixed appliance as indicated below:-
For backflow protection in do estic or
For backflow protection in do estic or For backflow protection in do estic or
For backflow protection in do estic or
installations up to, and including, Fluid
installations up to, and including, Fluid installations up to, and including, Fluid
installations up to, and including, Fluid
Category 3.
Category 3.Category 3.
Category 3.
If the fitting cannot be installed as
indicated in the table opposite it shall be
installed as either a
a a
a or b
bb
b below:
a:
a: a:
a: with an approved double check valve
asse bly or so e other no less
effective backflow prevention device
i ediately upstrea of the inlet.
b:
b: b:
b: so that it draws water by gravity only
fro a cistern, or cylinder having a
per anently open vent pipe, and the
distributing pipe supplies no other fitting
(other than draining tap) at a lower level.
3/4 in
3.
3.3.
3. Exceeding 3/4 in 70
05
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