Siemens LFE1 Series, Datasheet

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Building Technologies CC1N7461en
21.08.2018
Setting facilities on the burner control (cont´d)
The settings are made by means of the red cams of the sequence switch.
Their time marks serve as adjustment guides.
On completion of the settings, the securing screws of the cams should be tightened
carefully to prevent inadvertent readjustments.
(Operation without ignition spark supervision)
·
Loosen the securing screws of cams N2 and N3
·
Hold cam N1 and rotate cam N2 so that its setting mark aligns with the relevant
time mark of cam N1 (see illustration and table; intermediate settings are possible).
Secure cam N2
·
Rotate cam N3 so that its setting mark is against the lower stop of cam N2. Secure
cam N3
·
Check the adjusted safety time. The new safety time is to be indicated on the plate
(setting slot accessible from the bottom of the unit cover)
III II I N1 N2 N3
7761p07/1296
Cam N2 adjusted to...
LFE1... LFE1.1...
... cam N1,
time mark I TSA = 0 s 0 s
II 4.5 s 2.3 s
III 9 s 4.5 s
Factory setting Depending
on variant
< 2 s
(Operation with ignition spark supervision)
·
Loosen the securing screws of N2 and N3
·
Hold cam N1 firmly, set the setting mark of cam N2 to the time mark
I
of cam N1
and secure cam N2
·
Hold cam N2 firmly, set the setting mark of cam N3 to the desired time and secure
cam N3 (see illustration and table)
·
Check the adjusted safety time
Cam N3 adjusted to...
LFE1... LFE1.1...
... the stop in the direction of the arrow TSA = 0 s 0 s
... the stop in the other direction 6 s 3 s
Factory setting Depending on variant < 2 s
Loosen the securing screw of cam N5 and set its setting mark to the relevant time mark
of cam N4 (see illustration and table; intermediate settings can be made).
N4 N5 I II III
7761p08/1296
Cam N5 adjusted to...
LFE1... LFE1.1...
... cam N4, Time mark I t9 = 0 s 0 s
II 4.5 s 2.3 s
III 9 s 4.5 s
Factory setting Depending
on variant
< 2 s
Setting the safety times
First safety time TSA
First safety time TSA‘
Second safety time t9