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Plumbing technicalities
In addition to complying with the wishes
of the Water Authority and Building
Control Officer, there are a few other
technicalities you must bear in mind if
your new machine is to work properly.
1
The machine must be given a separate
hot and cold water supply. You should
not connect it to a mixer tap, or to a
single outlet water heater. If only cold
water supply is available connect the two
hoses to a cold water outlet by means of
"Y" connection piece.
2
A certain amount of water pressure is
needed for the machine to fill with
reasonable speed. If you cannot make the
cold water connection direct to the rising
main — and many water authorities will
object if you do — check that the height
between the machine's inlet and the
bottom of the cold water storage cistern
is at least 4.25m (14ft). As for the hot
water supply from a hot water storage
cylinder, you will have sufficient pressure
if the height between the machine's inlet
and the bottom of the cold water storage
cistern — (not between machine and hot
water cylinder, as many people think) is
at least 2.4m (8ft). If there is insufficient
cold water or hot water pressure, you
may still be able to operate the machine
successfully by removing the small
restrictor contained in the hot or cold
water inlets to the machine. To get at
this, simply disconnect the water supply
hose from the inlet, pull out the inlet's
mesh filter to gain access to the
restrictor which can be removed with the
aid of a pair of thin nosed pliers.
3
If you intend the drain hose from the
machine to empty into a sink, make sure
the sink is empty and that the plug hole
is not blocked.
4
Where the machine is permanently
plumbed in, it is best to hook the end of
the hose into a drain-pipe installed for
the purpose. It should have an internal
diameter of at least 38mm (1 ⁄2in) thus
leaving an air gap between hose and
pipe, and should be designed in such a
way that the water level within it never
covers the end of the hose.
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