Pre-Startup Check; Operation: Sequence Of Events Loa24/44 - elco VECTRON L 04.350 DUO Betriebsanleitung

Starting up

Pre-startup check

Operation: sequence of events
Checks before starting up
Before starting up, check the following
points on the installation:
heating circuit water pressure
–
operation of the circulating pump
–
operation of draught stabilizer on flue
–
constant power supply (230 V) to
–
boiler control panel
oil level in tank
–
oil pipe connections (inflow, return
–
and tightness)
opening of inflow oil valves
–
burner head setting (see table of
–
settings)
ignition electrode adjustment
–
setting of thermostats
–
Operating diagram LOA 24 / LOA 44
tv = Pre-ignition time / Pre-vent time 13 sec
ts = Safety time
tnz = Post-ignition time
tnv = Time delay for 2d stage
Sequence of events
The installation is switched on:
regulation circuit closes
–
motor starts
–
ignition is brought into operation and
–
furnace pre-ventilated
During pre-ventilation, the solenoid
valve remains closed (no voltage).
At the end of the pre-ventilation time:
the valve opens and
–
the flame is ignited.
–
The amount of air supplied for
combustion is regulated as a function of
oil flow rate. Should the regulation
circuit open, the burner shuts off.
LOA 24 LOA 44
ca. 25 sec
10 sec max. 5 sec
15 sec ca. 5 - 0,5 sec
15 sec ca. 5 sec
08/2005 - Art. Nr. 13 018 076A
Premature flame signal
During the pre-ventilation or preignition
time, no flame signal must be present.
Should the signal occur during this
period, the control and safety unit triggers
a default shut-off after completion of
preventilation time and safety time.
During the safety time, oil supply is
inhibited.
Flame fails to ignite
Should no flame be present at the end
of the safety time, a default shut-off is
immediately triggered. Fault clearance
cannot occur for at least 30 seconds.
Extinction of flame during operation
If the flame should fail during operation,
the fuel supply is cut off immediately
and a new start-up operation is
attempted in accordance with the
operating procedure.
EN
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