7
The Mains Cold Water (MCW) supply
connection (A) shall be able to supply
at least 8 litres per minute of clean
water; otherwise the operation of the
appliance may empty the break tank
of water.
The appliance is fitted with a low water
level switch in the break tank to prevent
operation of the unit when there is
insufficient water available. This is to
protect the pump assembly from air
locks and subsequent damage.
The Waste Water Outlet/Overflow (B)
shall be routed to a safe discharge
location that will not cause harm
to persons, nor property, but shall
be clearly visible, so that any water
discharge will be identified and
remedial action taken, ensuring that
any wasted water is kept to a minimum.
The Waste Water Outlet/Overflow
shall not be connected directly to any
foul water system without a suitable
warning method being incorporated,
as above.
After the warning method, and before
connection to the foul water system
a suitable trap shall be incorporated
to prevent the release of any vapour/
effluent from the foul water system.
The Waste Water Outlet/Overflow
shall be routed in such a way to
minimise the risk of blockage
through freezing. If any part of the
Waste Water Outlet/Overflow is to
be run external to the building or
is at risk of freezing, then the pipe
shall be suitably insulated to protect
against freezing.
The System Connection (C) shall be
connected to the system pipework
in such a manner so that the suction/
discharge pressure of any circulation
pumps shall not influence the
appliance. It is recommended that
the System Connection be routed in
such a manner to include/incorporate
the supply connection to any system
expansion vessels. See Fig 8.2
Each unit comes with a selection of
inserts that can be fitted into the inlet
valve to achieve the required output:
Mains inlet pressure > 3 bar H.P.
restrictor (white see fig 8.1) Mains inlet
pressure < 3 bar L.P. restrictor (red see
fig 8.1)
The HP restrictor is fitted in the inlet
side of the float valve assembly.
This should be unscrewed in order to
change the restrictor (see fig 8.2).
The LP Restrictor is clipped to the
side of the valve assembly.
8.0 Water Connection
Water Connections
Figure 8.1 – Flow restrictors
Figure 8.2 – Changing
restrictor inserts
