Specifications

s
E-7
Eryansion
vessel
(sealed
heating
system
onlY)
lnec*
internal
pressure of expansion
vessel
*nir*r
should
be 0,7
to 0,9
bar'
if heating
srstem
of
appliance
is without
pressure
(black
:'al
of
build-in
pressure gauge
at 0).
Refill
with
ar
pump, if necessary.
i{:.--
ti f5f
8.8
Final
tests
8.8.1
Final
test
heating
system
Close
all drain
screws
and
nipples and
open
the
service
cocks
to
refill the
appliance.
lf
a sealed
svstem
ensure
the
pressure
is
1.2 bar
a-ccording
to 6.3. Switch
on electricity,
turn on
qas
and
start
the appliance
as outlined
on
the
;ticker
at
the
inner side
of
the f ront door.
Check
flame
failure
device
for correct
functioning.
Check
the
pilot
flame
and adjust
with
the
pilot
rate
adluster
(7)
so
that there
are
three
seoarate
flames.
lf the
flame
profile
is
one
larqe,
loose
flame,
increase
gas
rate until
3
seiarate
flames develop,
as shown
in
fig. 60a'
Replace
pilot
jet
if necessary.
Check
the
appliance
for soundness.
Check
all controls
for correct
functioning'
reassemble
outer
casing
of
appliance
as
under
7.
8.8.2
Final test
electrical
system
Check
-
earth
continuity
polarity
resistance
to earth
according
to
INSTRUCTIONS
FOR BBITISH
GAS
MULTIMETER.
8.9
Change
of
Pilot
iet
Disconnect
the
pilot
tube
from
the
pilot'
Change
pilot
jet
and
washer
and
reassemble
in
reverse
ordbr.
In case
of
an open-flued
appliance
remove
the
pilot
assembly
by
unscrewing
the
retaining
bcrew.
Changb
the
pilot
jet
and
reassemble
in
reverse
order.
Check
connections
for
gas
soundness.
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