5
Hose
Retainer
Bath
Spillover
Leverl
Shower Tray
Spillover Level
Minimum
20mm
Between
Showerhead
& Spillover
Wall Outlet
Controller
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Water Requirements
This fitting 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 2014.
The fitting shall be installed so that its outlet
discharges above the spill-over level of any fixed
appliance as indicted on the illustration to the
right.
For backflow protection in premises or
installations up to, and including Fluid Category
3 and 5.
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 fitting,
which ever is the greater. If the fitting cannot be
installed as indicated it shall be installed with a
backflow prevention arrangement suitable for
the Fluid Category.
If the shower is to be installed in a hard water area, we recommend that an in-line scale
inhibitor is fitted which will prolong the life of the shower. Please refer to your supplier
for advice.
Maximum ambient temperature: 40°C.
A minimum working inlet pressure of 0.1MPa (1bar) at a minimum flow rate of 10 litres
per minute is recommended for full performance.
The maximum static inlet pressure must not exceed 1.0MPa (10bar).
The shower must be connected to a mains water supply only with a minimum working
inlet pressure of 0.1 MPa (1bar) at a minimum flow rate of 10 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 shower head be ‘constrained by a fixed 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 fixed appliance.
If a shower head can sit within a bath, basin or shower tray, you must fit a double check
valve in the supply pipe work to prevent back siphonage. If the shower head can sit
within a WC then the air gap should be a type AUK3 not less than 20mm or twice the
diameter of the inlet pipe to the fitting, whichever is the greater.
As this shower unit is already supplied with a single check valve pre-fitted in each water
supply inlet, a further single check valve would be required in such a situation, fitted in
each water supply as close as possible to the existing check valves.
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.