809302

Worcester-Bosch 230 RSF Manual

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General Description
The Worcester 230
is
a combination boiler supplying mains fed
domestic hot water plus central heating
at
an
output
of between
9.2
and
23
kW.
HOT
WATER
PROVISION
When a tap
is
turned on, hot water will become available
in
a
continuous supply
at
a constant temperature, after a short delay,
depending on when the appliance was last fired.
CENTRAL
HEATING
PROVISION
When a
demand
is
made
for central heating
the
burner will light
and the appliance will automatically match output to the system
load.
If
the
system requires less than 9.2
kW
the burner will light
only
periodically
to
maintain system temperature.
CENTRAL
HEATING
AND
HOT
WATER
PROVISION
Hot water will take priority over
the
supply of heat to
the
central
heating system.
User Controls
The
appliance facia panel
is
fitted with either an Operating
Switch or an electronic programmer
for
the control
of
domestic
hot water and central heating.
The Operating Switch offers the following settings:
WATER
Domestic hot water
will
be provided when
a
tap
or
shower
is
turned on.
OFF
Central heating
and
domestic
hot
water
remain
off.
HEATING
&
WATER
Central heating
will
operate
in
response
to
system controls
and
domestic hot
water
will
be
supplied when a
tap
or shower
is
turned on.
ELECTRONIC
PROGRAMMER
(if
fitted)
Your
Installer
will
have
mounted
the
electronic programmer on
the appliance
facia
panel. Operating Instructions are supplied
with
the
programmer.
CENTRAL
HEATING
TEMPERATURE
CONTROL
The
knob
on
the
facia
panel
allows
control
of
the
water
temperature to
the
radiators.
INDICATOR
LIGHTS
The
POWER
ON
light (amber) indicates
that
the
mains electricity
to
the appliance
is
on.
The
DEMAND
light
(green)
indicates that
the
appliance
is
supplying either domestic hot water
or
central
heating.
SYSTEM
PRESSURE
GAUGE
The red needle has been
set
to show
the
sealed system pressure
which is required for
the
appliance to
operate
effectively. The
white needle
will
show
the
actual pressure
in
the
system.
Hot Water Temperature Control
By
slightly reducing
the
flow of domestic hot water from
the
tap,
the
temperature of
the
water will increase. This
is
of particular
advantage
in
the
winter, for
example
to
increase
bath
water
temperature and to
remove
heavy grease deposits
on
plates, etc.
Also
this
will
provide
an
added advantage
of
reducing the delay
before hot water is obtained.
The maximum discharge temperature of hot water to
the
taps
is
preset at the
factory.
To
Light
and
Stop
the
Appliance
See
Fig.
1.
TO
LIGHT
THE
APPLIANCE
Set the Operating Switch
(or
programmer) to
OFF.
Switch off the
electricity supply.
Remove
the cabinet
front
panel
by
lifting
up
and
pulling
forward.
Check
that
the
water
valves
to
the
central heating supply are
open. See
Fig.
1.
On
sealed systems check
that
the
white needle
on
the
pressure gauge is not below
the
required pressure.
Switch on the mains electricity. Set
the
room thermostat,
if
fitted,
to maximum.
1\.lrn
the
central heating temperature control knob
to max.
Set
the Operating
Switch
(or
programmer) to
HEATING
&
WATER.
The burner will light and can
be
seen through
the
sight glass
Set
the
Operating
Switch
(or
programmer)
to
the
required
position.
Set
the
room thermostat,
if
fitted,
to
the
desired temperature.
Set
the
central
heating
temperature
control
knob
to
give a
comfortable radiator temperature.
Replace
the
cabinet front panel.
TO
STOP
THE
APPLIANCE
For
Short Periods
Set the Operating Switch
(or
programmer) to
the
OFF
position.
For
Long
Periods
Set
the
Operating Switch
(or
programmer) to
OFF.
Switch off
the
mains electricity.
The facia mounted programmer will retain its settings for
about
four
weeks
after
which
it will
return
to
the
factory
set
programme.
The
display
will
disappear after approximately
12
hours.
OVERHEAT
THERMOSTAT
An
overheat
thermostat
is
fitted
to
the
appliance
which
interrupts
the
main electrical supply in
the
event of overheating.
This
thermostat
is
reset manually.
If
the
appliance fails to light,
check
that
the
overheat
thermostat
has
not
operated
by
pressing the reset button.
See
Fig.
1.
Access
is
gained to the
button by removing the cabinet front panel.
If
the
overheat
thermostat
stops
the
appliance
again
call a
service engineer.
System Operation
SEALED
WATER
SYSTEM
To
ensure
that
the
appliance
operates
correctly, a
minimum
water
operating pressure
must
be
maintained. The minimum
pressure required
is
indicated by
the
red needle
on
the
pressure
gauge located
on
the
facia
panel.
If the pressure falls,
the
system
must
be
re·pressurised by your
installer. Contact your installer or a maintenance engineer
if
the
system continues to lose pressure as this
may
indicate a leak.
CENTRAL
HEATING
SYSTEM
During
the
first operation of
the
central heating
system
check
that
all
radiators are heated evenly.
If
the
top of
the
radiator is
at
a lower temperature
than
the
bottom
then vent
it
by releasing
air through
the
vent screw
at
the
top of each radiator.
Refer
to
the
preceding paragraph as excessive venting
may
cause a drop
in
the
system pressure.
FLUE
OPERATION
In
cold weather, vapour
may
be emitted from the flue. This is a
normal
operating
characteristic
and
no
remedial
action
is
necessary.
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