Thermostatic electric shower
6
WaRNING!
the shower must not be positioned
where it will be subjected to freezing
conditions.
WATER REquIREMENTS
WATER REQUIREMENTS
The installation must be in accordance with
Water Regulations/Bylaws.
To guarantee activating 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 with a maximum static pressure
of 1 000kPa (10 bar).
Note:
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 with a maximum static pressure of
1 000kPa (10 bar). If the stated flow rates are not
available, it may not be possible to achieve ideal
performance from the unit throughout the year.
For guidance on the running and static pressures
contact the local Water Authority or consult a
competent plumber.
under site conditions where the power supply is
below 220 volts and the mains water pressure is
above 5 bar, it is recommended to fit a pressure
reducing valve set at 3.5 bar.
A typical system layout is shown in
fig.5
.
Do not use jointing compounds on any pipe
fittings for the installation.
During periods of high ambient water
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 rated
shower). 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.
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)