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9. DO NOT install the shower or fittings where they may be exposed
to freezing conditions.
10. The position of the shower fittings must provide a minimum air gap
of 25 mm between the showerhead and the spill over level of any
bath, shower tray or basin. There must be a minimum distance of
30 mm between the showerhead and the spill over lever of any
toilet, bidet or other appliance with a Fluid Category 5 backflow
risk.
Mira Shower
Hose retaining ring fitted and shower fittings fixed at a suitable height
Note: There will be occasions when the hose retaining ring will not provide
a suitable solution for Fluid Category 3 installations, in these instances
an outlet double check valve must be fitted, this will increase the required
supply pressure typically by 10kPa (0.1 bar). Double check valves fitted in
the inlet supply to the appliance cause a pressure build up, which affect
the maximum static inlet pressure for the appliance and must not be fitted.
For Fluid category 5 double check valves are not suitable.
1555018-W2-A
30 mm
Minimum
25 mm Minimum
Bath or Shower
Toilet or Bidet
Tray FC3
FC5
preventing dirty water backflow
Zone of
Backflow Risk
25 mm
Minimum
Hand Basin
FC3
6
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