Technical instruction
Step 1
Open front cover
1.Screw off the front panel and disconnect the display and control unit terminal.
Step 2
Replace
gas
tube
assembly
(pic 1)
1.Screw off the gas tube assembly
①
and take it out
②
.
2.Change
to
the
matched
gas
ejector
tube
assembly.
Note:
It's
necessary
to
examine
the
air
tightness
after
change,
to
check
the
seal
ring
on
the
gas
control
system
installed
well
to
prevent
gas
leakage.
Step 3
Setting
the
gas
type,
volume,
and
model
1.Connect
display
and
control
unit
2.Volume
selection:
Within
10s,
after
the
system
is
powered
on
but
switched
off,
press
Up
and
Down
keys
together
for
2s.
After
the
buzzer
rings
once,
"L"
blinks
on
the
display,
which
means
that
you
have
entered
the
volume
selection
mode.
Press
On/Off
key
to
enable
the
adjustment
function,
and
then
Up
or
Down
key
to
adjust
the
volume.
Table
1
shows
the
volume
parameter
settings.
3.Gas
type
selection:
After
the
gas
volume
is
adjusted,
press
On/Off
key
to
both
confirm
the
modification
and
enter
the
next
selection
interface.
The
"q"
that
blinks
on
the
display
means
that
you
have
entered
the
gas
type
selection
mode.
Press
On/Off
key
to
enable
the
selection
function,
and
then
Up
or
Down
key
to
select
a
gas
type.
The
originally
selected
type
is
displayed
the
first
time
you
press
Up
or
Down
key,
which
is
12T
by
default.
Table
2
shows
the
gas
type
parameter
settings.
4.Model
selection:
After
gas
type
is
selected,
press
On/Off
key
to
both
confirm
the
selection
and
enter
the
next
selection
interface.
The
"F"
that
blinks
on
the
display
means
that
you
have
entered
the
model
selection
mode.
（
It's the
factory default and no need to select, just press on‐off key to skip this step.)
Step 4
Secondary
pressure
adjustment
1.After adjusting the volume and gas type, screw off the secondary pressure
screw on the gas control system
③
. And connect the secondary port and U type
barometer
with
rubber
pipe.
2.After
the
system
is
switched
on
and
it
combusts
normally,
press
Up
and
Down
keys
together
for
5s.
The
"88"
digital
tube
displays
"26",
which
means
that
you
have
entered
the
secondary
pressure
adjustment
mode.
3.Then
press
On/Off
key.
The
high‐order
position
of
the
"88"
digital
tube
blinks,
which
means
that
you
can
now
regulate
the
secondary
pressure
of
the
big
endian
by
the
Up
or
Down
key.
4.Press
On/Off
key,
the
low‐order
position
of
the
"88"
digital
tube
blinks,
which
means
that
you
can
now
adjust
the
secondary
pressure
of
the
little
endian
by
the
Up
or
Down
key.
5.After
the
adjustment,
press
On/Off
key
to
confirm
and
exit
from
the
adjustment
mode.
6.After
the
secondary
pressure
test
compliant,
mount
the
secondary
pressure
screw
and
conduct
leakage
test
with
fire.
Note:
After
you
modify
the
secondary
pressure,
wait
for
2s
or
3s
to
ensure
that
the
system
has
recorded
the
updated
the
current
value.
You
must
verify
the
upper
limit
and
then
the
lower
limit
before
you
exit.
Table
3
shows
the
