
1. Water isheatedinstantaneously as it flows
over the heating elements in the copper
cylinder (Diagram 8).
2. The heaters are onlyswitched on when
sufficientwaterisflowing.
Thisis done automaticallywith a switch
which works on water pressure and is
indicated by the neon indicator illuminating.
3. The wateris turnedon and offby the
solenoid valve built into the shower.
Thisis switched on when button “B”is
pressed.
4. The flow of water is automatically held at
the levelset by the user even though the
supply pressure may vary (see “Effect of
Other Water Devices on IncomingWater
Supply”).
5. Ifthe water supplyfalls below a set limit,
the pressure switch willoperate and switch
offthe power tothe elements. Thisis indicated by neon indicator going out (see “Effect ofOther
Water Devices on Incoming Water Supply”).
6. As a furthersafeguard,a thermal cut-out switches the power off if the water temperature
climbs above the set limit.
Thiscut-out, which gives an audible click,may also operate due to residualheat when the shower
isswitched off. It willreset itself ifwaterisrun through the showerfor 10 to 20 seconds.
7. The pressure reliefdeviceis to safeguard against abnormal pressure conditions,and provides a
levelof appliance protection should an excessive build ofpressure occur withinthe shower.
Effect of Seasonal Incoming Water Temperature Changes
The required watertemperature isachieved by adjusting the rate ofwaterflow.
Diagram 9 shows the principle involved inrelating temperature riseto flow rate.
The higher the water rate the lower the temperature and viceversa.
The temperature of the watersupplied from the mains can vary considerably
throughout the yearfrom5 to 20°C.
This meansthat in the winter,flow rate will be less than in the summer to
achieve thesame 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 innerorouter spray pattern onlyof
your showerhandset. Thiswill ensurecorrect 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 fromtoiletsbeing flushedor taps being turned on and off.
When thishappens your showering temperature will be held within a controlled band,provided that
the minimumpressure required bythe shower is maintained.
Your shower requires aminimum running
pressure of 69kPa (0.7 bar,10 psi).
At pressures above 69kPa (0.7 bar, 10 psi)it willminimise temperaturefluctuationsas detailed
above. Ifthewater pressure fallsbelow 69kPa (0.7 bar, 10 psi) itislikely that the pressure switch
will turn offthe power to the heating elements,resulting inacold shower.
HOWYOUR SHOWERSPA WORKS
3
INTRODUCTION
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
manualbefore contacting us.
Thank you for purchasing a quality Creda Shower Spa manufactured in England.
To enjoy yournew shower atits best,please take time to read this manual thoroughly to
familiarise yourself with all instructions, BEFORE beginning installation.
Having done so, keep this manual handy for future reference.
Your shower is designed to stabilise temperature changescaused by waterpr
These canresultfrom toiletsbeing flushed or taps being turned on and off.
When thishappens your showering temperature will be held within a controlled band,provided that
the minimumpressure required bythe shower is maintained (see “Effect ofOtherWater Devices”).
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 instructionsand
recommendations.
2. All wiring and installation must be supervised by a suitably qualified person.
3. THISAPPLIANCE MUSTBE EARTHED.
4. The installation mustbein accordance with the current edition of BS.7671 (the “IEE Wiring
Regulations”) and “Part P”ofthe “Building Regulations” inforce at the time ofinstallation.
Installations outside of England and Wales must also conform to any local regulations ineffect.
This appliance is intended tobe permanently connected to the fixedelectrical wiring of the mains
supplywith itsown dedicated supply.
5. This appliance must NOT be fittedwhere it may be subjected to freezing conditions.
6. DO NOT switchthe appliance on if you suspect it ofbeing frozen.
Wait untilyou are sure it has thawed out.
7. DO NOT fitany sort oftap orcontrol on the appliance outlet. The appliance isdesigned to have
an open outlet and should onlybe used with “Creda” recommended fittings.
8. Take care toavoid restricting the outlet of the pressure relief device.
Ifwater is discharged fromthepressure reliefdevice, maintenance will be required before the
appliance can be safely used.
9. Isolate the mainselectrical and water supply before removing the frontcoverofthe appliance.
IMPORTANTSAFETYINFORMATION