is the first draw-off below the ventilation pipe
tee.
Fig.3
illustrates all the incorrect connections
that must be avoided.
All pipework to the shower unit must be routed
where it remains below the level of water in the
cistern. In the case of horizontal sections of
pipework in lofts, it may be necessary to fit
automatic air vents at high points on the
supplies to remove the possibility of air locks.
For the operation of the shower only, it is
recommended that the cold water storage
cistern is capable of holding at least 114 litres
(25 gallons). Where other hot and cold outlets
are likely to be in use simultaneously, the storage
capacity should be increased to 228 litres (50
gallons) in accordance with BS 6700.
Do ensure compliance with the Water
Regulations/Byelaws.
DO NOT connect to a combination cylinder
Mains supply
Isolating
valve
Cold water cistern
Vent pipe tee
Isolating
valve
Hot supply
Hot water
cylinder
Drain
valve
Other hot water
draw-offs
Alternative
connection
Shower unit
Ring main
25mm min
Isolating spur
(3A fused)
outside bathroom
Dedicated cold supply
10m
max
75mm
min
Isolating
valves
S i t e r e q u i r e m e n t s
4
SITE REQUIREMENTS
Water
The installation must be in accordance with
Water Regulations/Byelaws and BS 6700.
For correct operation of this shower unit, both
hot and cold water supplies to the appliance
must be gravity fed, at nominally equal
pressures, from a cold water storage cistern and
a hot water storage cylinder.
The water circuit should be installed so that the
flow is not significantly affected by other taps
and appliances being operated elsewhere on the
premises.
Fig.2
shows a recommended installation where
the hot water supply for the shower is made via
a tee connection on the underside of the
horizontal section of pipework from the cylinder.
Alternatively, the connection can be taken from
the hot supply pipe to other outlets as long as it
Fig.2
(Diagrammatic view – not to scale)
