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CONTROL BOX FOR LFL 1... SERIES 02
GAS BURNERS
Control box for burners of average and high power, with forced
draught, intermittent service (*), 1 or 2 stages, or modulating
types, with supervision of the air pressure for controlling the
air damper.
This control box bears the EC mark, in accordance with the
Gas and Electromagnetic Compatibility Directive.
* For reasons of safety, it is necessary to make at least one con-
trolled stop every 24 hours!
As regards the standards
The following LFL1… features exceed the standards, offering
a high level of additional safety:
- The flame detector test and false flame test start immediately after
the tolerated post-combustion time. If the valves remain open, or
do not close completely after adjustment stops, a lock-out stop
is triggered at the end of the tolerated post-combustion period.
The tests will end only at the end of the pre-ventilation time of
the next start-up.
- The validity of working of the flame control circuit is checked each
time the burner starts up.
- The fuel valve control contacts are checked for wear during the
post-ventilation time.
- A built-in fuse in the appliance protects the control contacts from
any overloads that may occur.
As regards the burner control
- The equipment allows operation with or without post-ventilation.
- Controlled activation of the air damper to ensure pre-ventilation
with nominal airflows. Positions checked: CLOSED or MIN (po-
sition of ignition flame on start-up); OPEN at the beginning and
MIN at the end of the pre-ventilation time. If the servomotor does
not position the air damper at the points described, the burner
does not start-up.
- Ionization current minimum value = 6mA
- UV cell current minimum value = 70mA
- Phase and neutral must not be inverted.
- Any place may be used for installation and assembly (IP40
protection).
Summary of Contents for COMIST 180
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