4
T40i
SITE REQUIREMENTS
WATER
The installation must be in accordance with Water
Regulations/Bylaws.
To ensure correct operation, the T40i unit
MUST
be connected to a gravity fed system of
hot and cold water of equal pressure
(fig.2)
.
Gate
valves
Gate
valve
Cold supply
Hot supply
Stop
valve
Cold
water
mains
supply
Hot water
cylinder
Isolating switch or
pull cord switch
(both fused at 3A)
Ring main
230mm min.
100mm
minimum
Water level
Outline of bath
or shower cubicle
Cold water
cistern
2' 6"
minimum
Fig.2
Typical gravity fed system with
bath tap/mixer valve arrangement
Whether the
mixer valve has
top or bottom
outlet, position
the T40i so the
hose is not
kinked or twisted
Fig.3
Mixer valve arrangement
IMPORTANT
The T40i pump
MUST NOT
be
connected to the mains water supply.
• The unit
MUST
be positioned
BELOW
the
cold water cistern and
NOT
placed in areas
where it will be subject to freezing conditions.
• Position the unit where it will
NOT
be in
direct contact with water from the sprayhead.
• Both hot and cold water supplies to the
existing bath/tap mixer valve
MUST
be direct
and separate from any other outlets or
connections.
• DO NOT use jointing compound on any
pipe fittings for installation.
NOTE:
The outlet of the T40i pump acts as a
vent and must not be connected to any form
of tap or fitting that is NOT recommended by
the manufacturer.
Generally there are four main types of hot and
cold water mixer systems to which the T40i can
be installed. These are shown in
figs.2
to
5
.
In each case, to ensure correct operation of the
booster pump, the top of the T40i unit
MUST
be
at least 230mm below the bottom of the cold
water cistern and the sprayhead must be a
minimum of 100mm below the water level of the
cold water cistern.
NOTE:
Bath mixer valves incorporating a
diverter valve can have a high restriction to
water flow, so the expected improvement may
not be possible.
Water circuits supplying the T40i unit should be
installed so that the flow is not significantly
affected by other taps and appliances that are
being operated elsewhere on the premises.
