9
Installation Requirements
Installation must be carried out in accordance with these instructions, and
must be conducted by designated, qualified and competent personnel.
1.
The hose retaining ring supplied
must
be used to stop the handset from dropping
below the spill-over level of the bath or shower tray. This will prevent water
contamination due to backsiphonage.
2.
Installations
must
comply with UK Water Regulations/ Bye-laws (Scotland),
and Building and Plumbing Regulations in force at the time of installation.
3.
When installing the shower fittings in a cubicle, position with the spray pointing
across rather than toward the opening of the cubicle.
4.
When installing the shower fittings over a bath, position with the spray pointing
down the centre line of the bath.
5.
Avoid layouts where the shower hose will be sharply kinked. This may reduce
the life of the hose.
6.
Do not
fit any form of flow control in the shower outlet.
7.
Do not
use excessive force when making connections.
8.
Do not
install the fittings in a position where it could become frozen.
9.
The minimum pressure required for a satisfactory spray pattern to form, at the
handset or spray head, is 0.06 bar. For a gravity fed shower installation the
minimum head of water required, to accommodate the pressure loss in the pipes
and shower control of a typical installation, is 1.0 metre.
For a pump installation the minimum acceptable vertical distance between the
base of the cold water storage cistern and the shower head to operate the pump’s
flow switches, is typically 0.6 m (600 mm).
High and Low Capacity Nozzle Rings
1.
All shower fittings are supplied with low capacity nozzle rings fitted as standard
to the handset or shower head. High capacity nozzle rings, with larger spray
holes, are also included in the fittings pack.
The low capacity nozzle rings will be suitable for most shower installations.
However for high pressure installations the spray force may be too powerful for
comfortable showering. In such situations it is recommended the high capacity
nozzle rings are fitted. Refer to
Maintenance: 2. Spray plate assembly -
removal and installation
for removal and fitting instructions.
2
.
For gas water heaters which require a higher flow rate to operate correctly, it is
recommended the high capacity nozzle rings are fitted.