Redring 500S User Manual

REDRING EXPRESSIONS 500S

SMART TECHNOLOGY

ELECTRIC SHOWER

Installation and User Guide

IMPORTANT:

This booklet should be left with the user after

installation and demonstration

changes caused by water pressure fluctuations.

CONTENTS

Section Page
Introduction _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2
Important Safety Information _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2
How to use your Expressions 500S Shower (Detailed) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3
How your Expressions 500S Shower Works _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4
How to maintain your Expressions 500S Shower _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 5
What to do if things go wrong (1) Self Help _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 5
What to do if things go wrong (2) Professional Service _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6
Redring After Sales Service _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6
How to install your Expressions 500S Shower _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7
Additional Accessories and Spare Parts _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 10
Guarantee and Contact Details _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 11
How to use your Expressions 500S Shower (Summary) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 12

INTRODUCTION

Thank you for purchasing a quality Redring Expressions 500S Shower manufactured in England.
To enjoy your new shower at its best, please take time to read this manual thoroughly, and having
done so, keep it handy for future reference.

The Redring Expressions 500S is an electric shower incorporating our “Smart Technology” with a
“Set and Forget” function of a push-button start/stop facility which starts the shower at a pre-set
power and flow rate reducing the amount of adjustment required.
Your shower is designed to stabilise temperature
These can result from toilets being flushed or taps being turned on and off.
When this happens your showering temperature will be held within a controlled band, provided that
the minimum pressure required by the shower is maintained (see “Effect of Other Water Devices”).

If you experience any difficulty with the installation or operation of your new

shower, then please refer to the “What to do if things go wrong” section in this

manual before contacting us.

IMPORTANT SAFETY INFORMATION

1. Your shower has been designed for convenience, economy and safety of use, provided that it is
installed, used and maintained in good working order and in accordance with our instructions and
recommendations.

2. All wiring and installation must be supervised by a suitably qualified person.

3. THIS APPLIANCE MUST BE EARTHED.

4. The installation must be in accordance with the current edition of BS.7671 (the “IEE Wiring
Regulations”) and “Part P” of the “Building Regulations” in force at the time of installation.

Installations outside the United Kingdom must also conform to any local regulations in effect.

This appliance is intended to be permanently connected to the fixed electrical wiring of the mains
supply with its own dedicated supply.

5. This appliance must NOT be fitted where it may be subjected to freezing conditions

6. DO NOT switch the appliance on if you suspect it of being frozen.
Wait until you are sure it has thawed out.

7. DO NOT fit any sort of tap or control on the appliance outlet. The appliance is designed to have
an open outlet and should only be used with “Redring” recommended fittings.

8. Take care to avoid restricting the outlet of the pressure relief device. If water leaks from the
pressure relief device, maintenance will be required before the appliance can be safely used.

9. Isolate the mains electrical and water supply before removing the front cover of the appliance.

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until you get the water temperature of your liking.

1. Ensure the electricity and water are turned on to the unit.

HOW TO USE YOUR EXPRESSIONS 500S SHOWER (DETAILED)

2. Your shower has 2 control knobs (see diagram 1).

Knob “A” controls the 3 power settings.
The most popular is “High”.
There are also options for a “Med (medium)”
or “Cold” shower (see notes 8 and 9).

Knob “C” controls the temperature of the water, and as a
helpful guide the knob position is indicated by a number
being displayed in Window “D”.
On the scale “1” is the coolest, whilst “9” is the hottest.

For this example turn outer knob “A” to “High”
and set knob “C” to display number “5”.

3. Press button “B”. The water will flow and 3 lights will illuminate
to indicate that the selected power rating is “High” (indicated by “High” next to the Indicator Lights).

4. Allow about 20 seconds for the temperature of the water to stabilise.

IF WATER IS TOO COLD

Turn knob “C” anti-clockwise in the

direction of the “red arrows” until the next
number is displayed in Window “D” and
continue turning anti-clockwise until you get the
water temperature of your liking.

Wait 20 seconds after each adjustment for
the water temperature to stabilise.

The final adjustment may be anywhere on the
scale, even between numbers.

If after turning fully anti-clockwise water is still
too cold, set shower pattern on shower handset
to outer or inner pattern only.

Turn knob “C” clockwise in the direction of the
“blue arrows” until the next number is displayed
in Window “D” and continue turning clockwise

Wait 20 seconds after each adjustment for the
water temperature to stabilise.

The final adjustment may be anywhere on the
scale, even between numbers.

If after turning fully clockwise, water is still too
hot, adjust knob “A” to “Med (medium)” setting
and re-adjust as above.

Water flow will be reduced on this setting.

IF WATER IS TOO HOT

5. Once a temperature setting to your liking has been achieved, knob “C” will rarely need adjusting. You
must however take into account required adjustments for variations of incoming mains water temperature
between summer and winter (see “Effect of Seasonal Incoming Water Temperature Changes” page 4).

6. When you have finished showering, press button “B” only (the “Med (medium)” light will go out).
Water will continue to flow for up to 7 seconds before switching off.
This reduces the temperature of the water in the tank for the next user.
Switch off the electricity at the ceiling switch or local isolator.

7. The “Med (medium)” setting of knob “A” reduces the power used by the shower giving a cooler shower or
the option of reduced water flow. This option is mainly used for summer usage and if this is used then
knob “C” must be re-adjusted. On this setting 2 lights will illuminate.

8. The “Cold” setting of knob “A” will supply water without any heating, and 1 light will illuminate.

9. Your shower is designed to stabilise temperature changes caused by water pressure fluctuations (see
“Effect of Other Water Devices on Incoming Water Supply” see page 4).

WARNING: DO NOT SWITCH THE SHOWER ON IF YOU SUSPECT IT OF BEING FROZEN.

WAIT UNTIL YOU ARE SURE IT HAS THAWED OUT.

WARNING: DO NOT OPERATE THE SHOWER IF WATER LEAKS FROM THE PRESSURE RELIEF VALVE.

MAINTENANCE IS REQUIRED BEFORE THE SHOWER CAN BE USED.

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WARNING: CONSIDERATION SHOULD BE GIVEN TO SUPERVISING THE YOUNG, ELDERLY AND THE

Your shower requires a minimum operating pressure of 69kPa (0.7 bar, 10 psi).

INFIRM WHILST THEY USE THIS SHOWER.

HOW YOUR EXPRESSIONS 500S SHOWER WORKS

1. Water is heated instantaneously as it flows over the

heating elements in the copper cylinder (diagram 2).

2. The heaters are only switched on when sufficient

water is flowing.
This is done automatically with a switch which works
on water pressure and is indicated by 2 or 3 lights
illuminating depending on knob “A” power selection.

3. The water is turned on and off by the solenoid valve

built into the shower.
This is switched on when button “B” is pressed.

4. The flow of water is automatically held at the level

set by the user even though the supply pressure
may vary (see “Effect of Other Water Devices on
Incoming Water Supply”).

5. If the water supply falls below a set limit, the

pressure switch will operate and switch off the
power to the elements. This is indicated by the middle power indication lights flickering and going
out (see “Effect of Other Water Devices on Incoming Water Supply”).

6. As a further safeguard, a thermal cut-out switches the power off if the water temperature

climbs above the set limit and the “Overheat” light will illuminate.
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, and
the “Overheat” light will go out.

7. The pressure relief device is to safeguard against abnormal pressure conditions.

Effect of Seasonal Incoming Water Temperature Changes

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 rate the lower the temperature 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 the winter, flow rate will be less than in the summer to
achieve the same outlet temperature.
In summer the “Med (medium)” power setting may give adequate hot water.
In some winter conditions, it may be necessary to select the inner or outer spray pattern only of
your shower handset. This will ensure correct operation of the shower with a slightly lower flow rate.

Effect of Other Water Devices on Incoming Water Supply

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 and off.
When this happens your showering temperature will be held within a controlled band, provided that
the minimum pressure required by the shower is maintained.

At pressures above 69kPa (0.7 bar, 10 psi) it will minimise temperature fluctuations as detailed
above. If the water pressure falls below 69kPa (0.7 bar, 10 psi) it is likely that the pressure switch

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