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If the shower is to be installed in a hard water area, we
recommend that an in-line scale inhibitor is tted which will
prolong the life of the shower. Please refer to your supplier
for advice.
Warning: The shower must not be installed in an area
subject to freezing conditions. Do not use if you suspect
the shower is frozen, this will damage the shower unit.
The shower must be connected to a mains water supply only
with a minimum working inlet pressure of 0.07MPa (0.7bar)
at a minimum ow rate of 8 litres per minute. The maximum
static inlet pressure must not exceed 1.0MPa (10bar).
If it is intended to operate the shower at pressures above the
maximum stated, a suitable pressure reducing valve (PRV)
should be used.
Water regulations stipulate that the showerhead be
‘constrained by a xed or sliding attachment (hose retainer)
so that it can only discharge water at a point not less than
20mm above the spill over level of the bath or shower tray
or other xed appliance’.
If a showerhead can sit within a bath, basin or shower tray
(Fluid Category 3), you must t a veriable double check
valve in the supply pipe to prevent back siphonage.
If the showerhead can sit within a WC (Fluid Category 5)
then the air gap (Type AUK 3) shall be not less than 20mm or
twice the diameter of the inlet pipe to the tting, whichever
is the greater.
Water Requirements
Double pole
switch
Shower
unit
Shower tray
spillover level
Bath spillover
level
Hose
retainer
Minimum 20mm
between
showerhead
and spillover
1m minimum
height from
shower unit
to floor
This tting needs 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.
All water ttings connected to the plumbing system require
an assessment of the risk of contamination by backow.
The regulations dene the levels of contamination risk, called
Fluid Categories, based upon the nature of contaminants.
Fluid Category 3 are uids which represent a slight health
hazard such as common household disinfectants and Fluid
Category 5 are uids which represent a serious health
hazard such as human waste.
The tting shall be installed so that its outlet discharges
above the spill-over level of any xed appliance such as a
bath or shower tray as indicated on the illustration below.
For backow protection in premises or installations where
a Fluid Category 5 is present;-
The vertical distance of the outlet above the spill-over level
shall be not less than 20mm or twice the diameter of the
inlet pipe to the tting, which ever is the greater. If the tting
cannot be installed as indicated it shall be installed with
a backow prevention arrangement suitable for the Fluid
Category.
Need help? For further technical help or advice please contact your point of purchase.