44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
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/
F
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a
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delay time t
LV
Flame simulation is an incorrect flame signal. If flame
simulation is detected, the flame simulation delay time
t
LV
(max. 25 s) starts to elapse. If the flame simulation is
discontinued during the flame simulation delay time t
LV
,
start-up can be initiated or operation continued. Other-
wise, a fault lock-out occurs.
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S
af
e
t
y
ti
m
e
d
u
r
i
n
g
o
pe
r
a
ti
o
n
t
SB
The default safety time during operation t
SB
in accord-
ance with EN 298 is 1 second. In accordance with EN
746-2, the safety time of the installation during opera-
tion (including closing time of the valves) may not ex-
ceed 3 seconds, see page 27 (Project planning infor-
m
ati
o
n
)
.
N
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t
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t
h
e
r
e
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of
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e
S
t
an
d
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r
ds
!
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F
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am
e
s
ig
na
l
If a flame is detected, the flame detector will supply a
flame signal.
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7
F
l
a
m
e
de
t
e
c
t
or
The flame detector detects and signals the presence of
a flame. The flame detector usually consists of a flame
sensor, an amplifier and a relay to produce the signal.
These components, with the exception of the flame
sensor itself, are accommodated within a single hous-
ing (IFW 50).
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F
a
u
l
t
l
oc
k
-
o
u
t
In the event of a fault lock-out, all valves are closed and
a fault signalled. Resetting must take place manually
following a fault lock-out.
If the flame fails during operation, the valves are closed
within the safety time t
SB
.
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