1701ULSA(EC)--EN, p. 24/30
Substitution
of
gas
valve
(differs
according
to
the
application
and
has
to
be
ordered
at
your
distributor)
1.
Check
that
the
air
circulation
fan
has
stopped
running.
2.
Before
starting
ensure
that
the
electrical
supply
is
turned
off
and
locked.
3.
Check
that
the
gas
supply
is
turned
off.
4.
Remove
the
service
panel
(see
‘removal
of
the
service
panel’).
.
5.
Disconnect
the
burner
relay
from
the
gas
valve
unscrewing
the
fixing
screw.
6.
Take
a
short
screw
driver
and
remove
the
screws
connecting
the
gas
valve
and
the
air
intake
restriction.
7.
Disconnect
the
gas
valve
from
the
gas
connection.
8.
Replace
the
gas
valve
in
reverse
order.
Substitution
of
one
of
the
relays
1.
Check
that
the
air
circulation
fan
has
stopped
running.
2.
Before
starting,
ensure
that
the
electricity
supply
is
turned
off
and
locked.
3.
Remove
the
service
panel
(see
‘removal
of
the
service
panel’).
4.
Disconnect
all
the
relay
connections.
5.
Remove
the
fixing
screws
of
the
contactor.
6.
Replace
the
relay
in
reverse
order.
Substitution
of
air
circulation
fan
(entirety)
1.
Check
that
the
air
circulation
fan
has
stopped
running.
2.
Before
starting,
ensure
that
the
electricity
supply
is
turned
off
and
locked.
3.
Remove
the
service
panel
(see
‘removal
of
the
service
panel’).
4.
Disconnect
the
electrical
connections
of
the
air
circulation
fan.
These
connections
are
on
the
electrical
connections
terminal
(see
the
wiring
diagram).
5.
Loosen
the
cable
gland.
6.
Pull
the
cable
through
the
cable
gland
towards
the
motor.
7.
The
air
circulation
fan
can
now
be
removed.
Note:
for
safety
reasons
it
is
strongly
recommended
to
wear
gloves
when
substituting
the
air
circulation
fan.
8.
Replace
the
air
circulation
fan
in
reverse
order.
Substitution
of
the
programmable
room
thermostat
1.
Check
that
the
air
circulation
fan
has
stopped
running.
2.
Before
starting,
ensure
that
the
electricity
supply
is
turned
off
and
locked.
3.
Loosen
the
thermostat
by
pressing
the
spring
mounted
part
of
the
fixing
with
a
screwdriver
and
tipping
it
carefully
upwards.
By
doing
this
the
thermostat
will
loosen
from
the
panel.
4.
When
substituting,
protect
the
contacts
in
the
wall
plate
against
paint
and
other
substances
that
can
disturb
the
functioning.
5.
At
the
bottom
there
is
a
plastic
screw.
Turn
this
screw
a
quarter
of
a
turn
so
that
the
valve
inside
the
thermostat
can
open.
6.
Once
this
valve
is
open,
the
two
wires
to
the
air
heater
can
be
disconnected.
7.
Close
the
valve
again
and
put
the
plastic
screw
back
in
original
position
so
that
the
valve
is
closed
again.
8.
Remove
the
fixing
points
between
the
wall
plate
and
the
wall.
9.
Replace
the
room
thermostat
in
reversed
order.
