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Installation
CLEARANCES
Space has
been provided
arou
nd the a pplfance for
safety
and
servicing.
It
is
important
that you do not restrict this
space.
The
minimum
clea
rances
are:
Left
hand
s ide
-
5
mm.
Right
hand
side
-
5
mm.
Top
(above
the
flue
bend}
·
·
25
mm.
Below
200m
m
In
front
-
600
mm.
VENTILATION
Ventilation
openings provided by the installer in
a
wall or
door
must
not
be
blocked.
fLUE TERMINAL
t
he
flue
terminal
in the
outside
wall
must not be
obstructed or
damaged.
System Fitting
SERVICE
Regular
servicing
will
maintain
efficiency . :
m
d
prolong the life of
your
appliance.
Worcester
Heat
systems
or your
Gas Region
can
offer service
contracts for the
maintenance of
your
appliance.
CLEANING
Use a damp
clot
h
and
a
little detergent.
Do
not
use abrasive
cleaners
on the
casing.
FROST PRECAUTIONS
The
appliance
has
a built-in frost
thermostat which
will
operate
during periods of low
temperature
(day
or
night}
although the
Operating
Switch
(or Programmer) is in the
OFF
position.
Your
installer
may
also
fit
a
remote frost
thermostat
if
parts
of
the
system
are exposed to
exceptionally
low
temperatures.
If
the
appliance
is
not
to
be
used
for long
periods during
cold
weat l1er then the
a
pplia nce and t he
central
heating
system
should
be
drained.
Fig. 1.
Sightglass (behind
front
panel)
!
. .
.
'
••
, J
OPEN INSTALLATION
Do not
place
a
ny
combustible material
on
or
around the a
ppli·
ance.
CUPBOARD INSTALLATION
If the
appliance is fitted
in
a cupboard
and
the
cupboard
is to be
used
for storage
(as
in
an
airtng cupboard for
clothes)
the
airing
space must
be
separated
from
the boiler and flue so that no
combustible material may come
into
contact with the
appliance
or
the
flue.
Do not restrict any permanent air
vent
which may
have been
provided.
Consult
your
Gas
Region
or
Worcester Heat Systems
for
advice
should you
wish to
lit
a compartment
around
the
appliance after
installation.
USE IN HARD WATER AREAS
The appliance has been
designed
to overcome scale accumula
tion
in
most
normal
conditions.
However. in
exceptionally hard
water
areas
a
descaler
can
be fitted
to
assist in
the
prevention
of
scale
formation.
ROOM THERMOSTAT
A
mains voltage room
thermostat should
be
fitted for improved
control of the
room
temp€!rature.
THERMOSTATIC RADIATOR VALVES
Thermostatic radiator
valves fitted to
your
central
heating
sys-
tem
must
conform
Lo BS2767.10.
SHOWERS,
BIDETS, TAPS AND MIXING VALVES
Taps
and
mixing valves
must
be suitable for
operating
at
a
mains
pressure
of
up to 1
O
bar.
Thermostatically
controlled or
pressure
equalising
shower
valves
will
give
clddcd
comfort and
safeguard
against
f!Xr.essive
temperatures.
Hot
and cold
mains
fed
water
can
be
supplied direct
to
an
over-rim
flushing
bidet
su
bject
to
local
Water
Company
requirements.
A loose-head
shower
hose
must
be
fixed
so
as
to
stop the
shower
head
com·
ing
within
2
5 mm
of
t
he top edge
of
the
bath.
Overheat
thermostat rese1
button
r
y
Indicator
lights
Amber-
Standby
t----------~
G
reen-
Demand
~--~
·
- ··-
1
[·~
Centre!
heating
temperature
control
[_
...
=:_?
1
j!
' Q;
~~ C
entral
heating
system pressu re gauge
~·~-----====:=:=::::;;;::;;;;;;;-
Operating
Switch
(or programmer)
L__
Gas
service
cock
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