
Water systems explained...
Low Pressure Systems High Pressure Systems
Typical Installation
A cold water tank in your loft and a
hot water cylinder often located in
your airing cupboard.
Typical Installation
There is no cold water tank or hot
water cylinder in your house. You
will have a combi-boiler often
located in your kitchen.
Typical Installation
There is no cold water tank in your
house. You will only have a hot
water cylinder, with occasionally an
expansion vessel on the top, often
located in your airing cupboard or
garage.

Showers types explained...
shower is switched on. It does
shower is switched on. It does
only. An internal pump increases
Electric showers require cold
water only which is heated
instantly to provide a hot
shower.
An electric shower only heats
the water you use once the
not use the hot water heated or
stored by the household water
system.
An electric shower is always
ready to use 24 hours a day
seven days a week.
The higher the kilowatt power
rating (kW) the better the
performance and greater the
flow of heated water.
Mixer showers require hot and
cold water which is ‘mixed’
together to provide a hot shower.
Mixer showers use the hot
water heated by the household
Generally produce higher flow
rates compared to electric
showers.
Mixer showers must be
matched to your household water
system. High pressure systems
such as combi boilers, are ideal for
mixer showers.
Add a pump on low pressure
systems to boost water flow rates.
Power showers require hot and
cold water which is ‘mixed’
together and the built in pump
increases water flow, to provide a
powerful hot shower.
Power showers are made for
use on low pressure systems
the flow of water to provide a
powerful shower.
Power showers are not to be
confused with electric showers
as they do not heat water.
Generally produce higher flow
rates than electric showers and
many mixer showers.

Electric showers explained...
Water System Compatibility
Electric showers work in most house holds where there is a cold mains water supply making them a
popular choice.
Electric showers require a mains fed cold water supply and an electric connection.
Operation
Electric showers heat cold water instantly to provide a hot shower.
Kilowatt Power Rating
The higher the kilowatt (kW) rating of an electric shower, the better the performance and flow of heated
Kilowatt Performance
A 10.5kW shower produces 25% greater flow of heated water
compared to an 8.5kW model, as shown in the diagram (below).
Entry Positions
For a replacement electric shower, it is best to check that the shower you are buying can be fitted on the
water, but remember, if upgrading to a higher kilowatt model then the electric cable may need to be
upgraded too (10mm² cable is strongly recommended for 9.5kW or above).
existing cable and water entry positions.

Mixer showers explained...
SINGLE
LEVER
Single control
lever on the
front of the valve
adjusts
temperature and
flow.
Exposed
(surface
BAR
Controls on
either side of the
valve to adjust
both
temperature and
flow.
Exposed
(surface
BAR
DIVERTER
Controls on
either side of the
valve adjusting
both
temperature and
flow.
The diverter
changes the
from the fixed
position shower
head to a
flexible handset.
Ideal for all the
family.
SEQUENTIAL CONCENTRIC
Single control
mounted
centrally in front
of the valve to
adjust
temperature and
flow.
Exposed
mounted)
Controls both
centrally
mounted in front
of the valve to
adjust
temperature and
flow.
Exposed
mounted)
Built-in (flush
mounted)
DUAL
CONTROL
Two separate
controls adjacent
to each other,
one control for
temperature the
other to adjust
the flow.
Built-in (flush
Exposed
(surface
mounted)

Power showers explained...
Power showers require a hot and a cold water supply plus an electric connection for the integral pump
Manual or thermostatic models are available. The thermostatic version has built
Water System Compatibility
Power showers are suitable for gravity-fed low pressure water systems ONLY
Connectivity
Operation
The hot and cold water is mixed together and the integral pump boosts the water flow to provide a
powerful shower at the temperature of your choice.
Performance
Power showers generally produce a higher flow rate than electric showers and many mixer showers.
Temperature Control
constantly regulates the temperature and provides a comfortable showering experience every time,
regardless of other water usage in the house.
Warning!
Please note: Do not confuse power showers with electric showers because unlike electric showers, power
showers DO NOT heat water, they use water heated by your system.