Shower Handbook
(Also covers 650 chrome variant)
IMPORTANT:
Please retain this booklet for future reference
CONTENTS
Page
How to use your shower …………… 2
How your shower works …………… 3
What to do if things go wrong …………… 5
Installation instructions ………….... 6
How to maintain your shower …………… 10
Guarantee …………… 12
How to use your shower
1. Ensure the electricity and water are turned on to the
unit
2. Functions of buttons: -
Button A – Starts shower on ‘HIGH’ giving maximum
power.
Button B - Starts shower on ‘MEDIUM’ giving
economy setting.
Button C - Starts shower on ‘COLD’ giving water with no heating.
Button D – ‘Shutdown’ switches the shower off and cools the water automatically.
Your shower has 3 power settings selected by pushing the corresponding button on the
front cover. It can be started by pressing A, B or C buttons. Once pressed, a light will
illuminate above the button confirming that power selection has been made.
3. Once either A (HIGH) or B (MEDIUM) have been pressed you will need to adjust the
temperature of the water. This is done by rotating knob “E”. if this is too low then turn the
knob anti clockwise and allow 20 seconds for the temperature to settle. Repeat this
procedure until the temperature is to your liking.
4. If the temperature is too high then turn knob “E” clockwise allowing 20 seconds between
adjustments. The final adjustment can be anywhere on the scale. See diagram 3 for
relationship of flow to temperature.
5. Once a temperature setting to your liking has been achieved knob “E” will rarely need
adjusting, e.g. Adjust for variations of incoming mains water temperature between
summer and winter.
6. When you have finished showering, push button “D” only. The electricity to the
elements is then disconnected and the adjacent light will flash, water will continue to flow
for approximately 5 seconds before switching off. This reduces the temperature of the
water in the unit for the next user. Switch the electricity off at the ceiling switch or local
isolator.
7. Your shower is designed to stabilise temperature changes caused by water pressure
fluctuations. These can result from toilets being flushed or taps being turned on or off.
When this happens your showering temperature will be held within a controlled band,
providing that the minimum pressure required by the shower is maintained.
8. Your shower requires a minimum operating pressure of 100 kPa (1.0 bar, 14.5 p.s.i.). At
pressures above 100 kPa (1.0 bar, 14.5 p.s.i.) it will minimise temperature fluctuations
detailed in note 7. If the water pressure falls below 100 kPa (1.0 bar, 14.5 p.s.i.), it is
likely that the pressure switch will turn off the power to the heating elements, resulting in
a cold shower.
Diagram 1
Diagram 1
2
9. During normal operation if the shower senses an overheated water temperature then the
thermal cutout will switch off the heating elements. Water will continue to flow and as the
water temperature falls the heating elements will be turned back on. If the unit continues
to cycle then increase the flow rate by turning knob “E” clockwise and check that the
handset does not require de-scaling. If it still continues to cycle then press button B to the
MEDIUM power setting. (Knob E will need adjusting).
10. Note that knob “E” IS NOT A TAP and does not turn the water off.
WARNING! DO NOT SWITCH THE SHOWER ON IF YOU SUSPECT IT OF BEING
FROZEN. WAIT UNTIL YOU ARE SURE IT HAS THAWED OUT.
Redring After Sales Service
We offer a technical advisory service on the telephone to contractors and other customers with
problems in the field.
RING 0870 9000 430
Spare parts can be supplied against any debit or credit cards.
RING 0870 0102 829
Remember to quote the exact type of shower, as written on the front of the shower and on this
leaflet. It may also be of use to have a note of the model and serial number as stated on the
underside the shower.
How your shower works
Your shower is designed for
convenience, economy and safety
of use
1. Water is heated
instantaneously as it flows
over the heating elements in
the copper heating tube.
(Diagram 2).
2. The required water
temperature is achieved by
adjusting the rate of water
flow. Diagram 3 shows the
principle involved in relating
temperature rise to flow rate.
The higher the water flow the
lower the temperature rise,
and vice versa. The
temperature of the water
supplied from the mains can
vary considerably throughout
the year from 5 to 20°C. This
means that in Winter, the
flow rate will be less than in
the Summer to achieve the
same outlet temperature. In
summer the ‘MEDIUM’
Diagram 2
3
power setting may give adequate hot water.
3. The heaters are only switched on when sufficient
water is flowing. This is done automatically with a
switch, which works on water pressure.
4. The water is turned on and off by the solenoid valve
built into the shower. This is switched on by button
A, B or C. (diag. 2)
5. The flow of water is automatically held at the level
set by the user even though the supply pressure
may vary. (See ‘How to use your shower’ note 7).
6. If the water supply falls below a set limit, the pressure switch will operate and switch off
the power to the elements.
7. As a further safeguard, a thermal cutout switches the power off if the water temperature
climbs above a set limit. The cutout gives an audible click when it switches off, but will
reset itself if cold water is run through the shower for 10 to 20 seconds.
8. The pressure relief device is to safeguard against extreme abuse conditions.
9. There are 3 defined spray plate settings adjustable by rotating the spray plate, (see
diagram 4). The modes have a positive “click” to identify them. If desired many
combinations between the 3 can be achieved.
Diagram 4
IN ORDER TO MAINTAIN THE PERFORMANCE OF YOUR SHOWER YOU MUST CLEAN
THE SHOWERHEAD.
All water contains particles of lime, which build up in the showerhead and unit reducing
the performance. It is therefore important to clean the showerhead regularly. This is
simply done by rubbing the rubber nozzles. In severe cases you may need to dip the
spray plate into a suitable de-scaling solution.
The frequency of this will vary from weekly to quarterly depending on the water hardness and
experience.
Check the spray plate is then free to rotate to give the three settings.
In some winter conditions, when the incoming mains water is particularly cold it may be
necessary to select the inner or outer spray pattern only. This will ensure correct operation of
the shower with a slightly lower water flow rate
Note: After use it is normal for some water to drip from the showerhead for a few moments, this
inhibits scale build up over prolonged use.
4
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