Operation Manual
1.3
GENERAL
GUIDANCE
ON
HOT
WATER
DELIVERY
The temperature
of
the hot water is governed by both the ambient temperature
of
the cold water supply and its flow rate through the boiler.
In
the case
of
the
24CPM model at a flow rate
of
1 0.6L/min there will be a maximum rise
of
35°C
above ambient.
At
a flow rate
of
6.8L/min there will be a rise
of
sooc
above
ambient, (the slower the flow rate, the greater the temperature rise).
The flow rate
of
the hot water
is
controlled
by
the hot outlet tap, until the max flow
allowed by the boiler is achieved.
The temperature selector knob on the boiler is effective only when there is either
a low water flow rate
or
a high ambient water temperature.
- The boiler can theoretically supply more than one outlet simultaneously
However in practice the tap which is nearest will receive the most hot water. If
the shower is
in
use and a kitchen tap
is
opened virtually all the hot water will be
diverted to the kitchen as it offers the least resistance.
- If
an
outlet
is
too restrictive it will slow down the flow rate and increase the
temperature. For example, ensure the shower head
is
free from blockages
caused
by
scale.
-
If
a tap or shower head is too restrictive due to a fault
or
blockage, the flow rate
will be reduced to below the rate
at
which the boiler
is
able to operate, resulting
in a wide swing
in
temperatures. Either fix the restriction or turn the temperature
selector on the boiler down.
A eaution:The boiler can
produce
water at
over
1o·c when in central
heating
mode.
If
you
run a
hot
tap
when
the
boiler
has been
heating
the
radiators,
the
initial
flow
through
the
hot
tap
could
be
very
hot.
DO NOT
PLACE
YOUR
HANDS
under
the
tap
or
use
the
shower
until
this
initial
flow
has passed.
-Allow
time
(30
seconds)
for
the
temperature
to
stabilise
after
making
an
adjustment
at
the
tap
before
making
further
adjustments.
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