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Building Technologies Division
CC1N7138de
18.05.2016
Electrical connection of the flame detector
It is important to achieve practically disturbance- and loss-free signal transmission:
Never run the detector cable together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
Note the maximum permissible detector cable lengths (refer to «Technical data»)
Earth the burner in compliance with the relevant regulations; earthing the boiler
alone does not suffice
Commissioning notes
When commissioning the plant or when doing maintenance work, make the following
safety checks:
Safety check
Anticipated response
a)
Burner startup with flame detector darkened
Non-alterable lockout at the end
of the safety time (TSA)
b)
Burner startup with flame detector ex-posed to
extraneous light
Non-alterable lockout within 40
seconds
c)
Burner operation with simulated flame failure;
for that purpose, darken the flame detector
during operation and maintain that status
Repetition followed by the non-
alterable lockout at the end of
safety time (TSA)
