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SECTION TWO
Siting and Plumbing
Spend some time planning exactly where to
site the shower heater and riser rail.
Bear in mind the height of people who
will
be
using it.
Tools you may need:
Adjustable spanner giving at least 25 NF
Flat blade screwdriver with blade
width 5-6mm
No 2 Pozidriv screwdriver with a bit in
good condition
Sharp Stanley knife
Round file
Pipe cutters
Electric drill and 7mm dia (N° 14)
masonry bit
Wire cutters
Electrician's insulation strippers
Other items you may need:
15mm compression elbow or straight
connector for connection to the
shower unit
15mm isolating valve
Things you must do:
2.1
It is advisable to check that the water
pressure to the shower is adequate. If in
doubt, consult a competent plumber.
Max: 10 bar.
Min: Up to and including 9.5kW: 0.9 bar.
Over 9.5kW: 1.1 bar.
The minimum figures are
running
pressures with at least 5 I/min flowing.
The use of other services connected to the
water pipe supplying the shower heater
may cause the water pressure to drop
below the minimum.
II
Highest position
Shower
Heater
E
E
o
;;;
E
E
o
'"
'"
Lowest position
co
"E
E
Lowest possible
~
I
handset position
_
Q
~r
Bath/shower tray
Figure 2.6
Siting of riser rail and heater
The following conversions may be useful:
1 bar
14.5 Ibflin2
=
33.3 ft head of water
10m head of water.
1 Ibflin
2
=
2.3 ft head.
2.2
Electric shower heaters are normally
plumbed into the mains water (except for
special low pressure versions). However,
the shower heater may be fed from a
storage tank as long as there is a sufficient
head of water.
2.3
Mount the shower heater on a flat
vertical wall with the outlet, to which the
hose is connected, pointing downwards.
2.4
Ensure that the shower heater is not in
the direct spray of a normally parked
handset.
2.5
Allow room around the shower heater
for removal of the front cover.
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