11
INSTALLATION
General
1.
Do not
take risks with plumbing or electrical equipment.
2.
Do not
install the shower unit in a position where it could become frozen.
3.
Isolate electrical and water supplies before proceeding with the installation of
the shower unit.
4.
The shower unit
must
be fed from a cold water storage cistern and hot water
cylinder with equal pressures. The shower unit
must not
be connected to a mains
cold water supply, unvented high pressure systems or multipoint/combination
gas water heaters.
5.
The installation
must
be carried out by a competent installer.
6.
Decide on a suitable position for the shower unit (minimum distance of 200 mm
from the ceiling to allow for the fitting and removal of the cover). The position of
the appliance and the shower fittings must provide a minimum gap of 25 mm
between the spillover level of the shower tray/bath and the handset, to prevent
back siphonage.
7.
Avoid layouts where the hose will be sharply kinked. This may reduce the life
of the hose.
8.
The shower unit is designed for surface mounting only and
must not
be recessed
into any wall or cavity, or tiled up to, as this prevents air circulating to the rear
of the unit.
Electrical
1.
The shower unit
must be earthed
by connecting the supply cable earth
conductor to the earth terminal.
Supplementary bonding:
Within the bathroom or shower room, all accessible
conductive parts of electrical equipment and extraneous conductive parts that
are likely to introduce earth potential, must be electrically bonded to earth using
a minimum cable size of 4.0 mm
2
if the cable is not mechanically protected
(2.5 mm
2
if mechanically protected).
2.
Power supply cable
must
have a minimum cross sectional area of 1 mm².
3.
Power supply
must
be 230-240 V at 50 Hz. The isolating switch
must
be double
pole switched, fused at 3 Amps, with at least a 3 mm contact separation gap to
each pole.
4. Do not
turn the electrical supply on until all plumbing connections have been
made and the shower unit has been commissioned as the unit
must not
be
operated dry.
5.
A 30 mA RCD (residual current device)
must
be fitted. This may be part of the
consumer unit or a separate unit.
6.
Fuses do not give personal protection against electric shock.
