4
8.
Your shower is provided with 3 fixing
positions in the backplate (see Diagram 8).
The top-fixing hole is a “key-hole” slot,
and should be marked and drilled first.
Tighten top screw with head protruding
about 10mm from the wall and hook the
backplate over the screw head.
This allows for correct and accurate
alignment of your shower before marking
and fixing the bottom positions.
You may not wish to tighten up both screws at this
stage as the holes are elongated to allow for adjustment after other connections have taken place.
b.
PLUMBING
(
For your convenience a cold water inlet configuration diagram is shown on page 5)
WARNING: ENSURE THAT THE MAINS WATER SUPPLY MEETS THE REQUIREMENTS BELOW
BEFORE CONTINUING WITH INSTALLATION.
The heater must be connected to the mains cold water supply.
This must have a minimum running pressure of 69kPa (0.7 bar, 10 psi)
and a maximum pressure of 690kPa (7.0 bar, 100 psi).
WARNING: BEFORE CONNECTING THE PIPE WORK TO THE SHOWER,
ENSURE THAT THE PIPE WORK IS FULLY FLUSHED OUT.
1.
Unscrew the “Red Cap” from the shower outlet pipe and discard it in a suitable manner.
It has been used to seal the shower during transit, and is no longer required.
2.
It is recommended that a WRAS (Water Regulations Advisory Scheme) listed isolating valve is fitted
to the incoming mains cold water before the shower unit. This will allow the unit to be serviced or
exchanged without having to turn off the mains water at the water stop valve.
3.
The heater can be fed from a header tank provided this has a minimum head of 7 metres (23ft).
4.
The cold water inlet connection supplied is a plain Ø15mm straight shank/shaft.
This connector will accept either a Ø15mm compression elbow or a Ø15mm “push-on elbow”.
Ø15mm copper, stainless steel or suitable plastic pipe should be used.
For your convenience, a cold water inlet configuration diagram is shown on page 5.
If rear entry is required, treat as top entry with an additional “Yorkshire” elbow (soldered type) for
fitting into the rear channel.
To aid installation, you may find it convenient to move the flexible pressure relief valve outlet
assembly by removing the two securing screws (See Diagram 2b).
In multiple installations, correct pipe work sizes should be calculated to maintain adequate flow to
each show er.
5.
It is permissible to use a WRAS (Water Regulations Advisory Scheme) approved sealant sparingly
whilst avoiding excess finding its way into the shower operating parts.
6.
With isolating valve connected,
flush the pipe work through to remove any particles etc
,
before making the final connection to the shower.
Blockage in the water ways (particularly the handset and solenoid valve) will prevent the heater
working properly.
Note: You may be charged for a service call if it is due to incorrect installation.
7.
The shower is designed to have an open outlet and should only be used with “Creda” recommended
fittings.
Do not connect the handset until after the front cover and detachable bottom section are fitted.
WARNING: DO NOT FIT A TAP ON THE SHOWER OUTLET.
WARNING: TAKE CARE TO AVOID RESTRICTING THE OUTLET OF THE
PRESSURE RELIEF VALVE.
13
1.
Water is heated instantaneously as it flows
over the heating elements in the copper
cylinder (Diagram 8).
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 the neon indicator illuminating.
3.
The water is turned on and off by the
solenoid valve
(and Timer PCB on 10.5kW
models)
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
neon indicator 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.
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 of pressure occur within the shower.
Effect of Seasonal Incoming Water Temperature Changes
The required water temperature is achieved by adjusting the rate of water flow.
Diagram 9 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.
Your shower requires a minimum operating pressure of 69kPa (0.7 bar, 10 psi).
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
will turn off the power to the heating elements, resulting in a cold shower.
HOW YOUR
AQUAWAVE
SHOWER WORKS
