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1. Water is heated instantaneously as it flows
over the heating elements in the heat
exchanger (fig.14).
2. The heaters are only switched on when
sufficient water is flowing.
This is done automatically with a switch
which works on water pressure.
3. The water is turned on and off by the
solenoid valve built into the shower.
This is switched on when Knob 'A' is rotated.
4. The flow of water is automatically held at the
level set by the user even though the supply
pressure may vary (see 'Advice to Users').
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Note: Internal wiring has not been shown for
reasons of clarity
5. If the water supply falls below a set limit, the
pressure switch will operate and switch off
the power to the elements, resulting in a cold
shower (see 'Advice to Users' on page.2)
6. As a further safeguard, a thermal cut-out
switches the power off if the water
temperature climbs above the set limit.
This cut-out, which gives an audible click,
may also operate due to residual heat when
the shower is switched off.
It will reset itself if water is run through the
shower for 10 to 20 seconds.
7. The pressure relief device is to safeguard
against abnormal pressure conditions, and
provides a level of appliance protection
should an excessive build up of pressure
occur within the shower.
MAIN COMPONENTS (fig.14)
a) Thermal Cut-Out
b) Heat Exchanger
c) Flow Valve
d) Pressure Relief Device
e) On/Off Solenoid Valve
f) Pressure Switch
g) Terminal Block
h) Detachable Backplate Section
i) Water Inlet
j) Water Outlet
k) Wall Fixing Key-Hole Slot
l) Alternative key-Hole slot
(common with S range)
m) Wall Fixing Slot
n) Alternative wall fixing Slot
(common with S range)
o) Optional knock out for rear entry
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