The installation must be in accordance with
Water Regulations/Bylaws.
To ensure activation of the heating elements,
the shower must be connected to a mains water
supply with a minimum running pressure of
100kPa (1.0 bar) at a minimum flow rate of nine
litres per minute for the 9.5kW rated model.
For the 10.5kW rated shower, the minimum
running pressure must be 150kPa (1.5 bar) at a
minimum flow rate of eleven litres per minute.
For all units the maximum static pressure must
be 1 000kPa (10 bar).
If in any doubt, the pressure should be checked.
Note: If the stated flow rates are not available,
it may not be possible to achieve optimum
performance from the unit throughout the year.
During periods of high ambient temperatures it
may be necessary to select a low power setting
to achieve your preferred shower temperature.
The water supply can be taken from a cold water
storage cistern provided there is a minimum
head of ten metres above the showerhead
(fifteen metres for the 10.5kW model). It must
be an independent supply to the shower only.
If it is intended to operate the shower at
pressures above the maximum or below the
minimum stated, contact Customer Service for
advice.
Fig.5 shows a typical system layout.
DO NOT use jointing compounds on any pipe
fittings for the installation.
Isolating
stopvalve
Mains
water
supply
Shower
unit
Switch may
be wall
mounted
in accordance
with IEE regs.
Mains electric supply
(via double pole switch)
Double
pole
isolating
switch
Separate permanently
connected supply
from consumer unit
Fig.5 Diagrammatic view (not to scale)
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