Fondital FORMENTERA KC 24, Инструкция по эксплуатации

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46
AST 14 C 257/00
IGNITION PHASE AT PRE-SET OUTPUT
At each request entailing burner ignition, the burner will
ignite with a pre-set power according to parameter P6 (fan
speed at burner ignition power). Once the flame has been
detected, flame propagation phase will commence.
FLAME PROPAGATION PHASE AT PRE-SET POWER
During the flame propagation phase, the heat power
supplied to the burner is kept at the ignition power value
(P6) for 4 sec, to distribute the flame evenly. At the end of
propagation, make the necessary adjustments according
to the function (heating, DHW, anti-freeze or chimney-
sweep).
AUTOMATIC FLAME CONTROL
When a request for DHW or heating is received, the fan activates. It is considered active if
a speed higher than the minimum rotation speed (700 rpm) is detected for 1.5 seconds
(TW chamber pre-cleaning standby time). If the fan rpm is within the tolerance (300
rpm), the gas valve and igniter are activated. The igniter deactivates if the flame is present,
or one second before the TS safety time (10 sec.).
If the flame does not appear within the TS safety time (10 sec.) during a cold ignition
attempt (no detection), the automatic flame control closes the gas valve and repeats the
ignition sequence up to 5 times, with a 5-second chamber-cleaning cycle after each
attempt. If no flame is detected in the TS safety time during the last attempt the flame
control switches to the flame control shutdown status. If the flame goes out during the
TS safety time, the ignition transformer reactivates - the gas valve power supply is not
interrupted and the fan continues to turn at the ignition speed.
If the flame goes out after normal operation (after the safety time), the automatic flame
control repeats the ignition sequence and only carries out one ignition attempt after a 5-
second chamber pre-cleaning cycle.
There is also a flame control shutdown when a flame is detected while the burner is OFF
(parasite flame) for a period of more than TW+TS
In the event of flame shutdown, post-circulation is carried out, based on the operation
request (30 seconds in DHW mode; P13 in heating mode with three-way valve in the
relevant operating position) and 10-second post-ventilation takes place at the ignition
speed (P6) + 900 rpm to clean the chamber.
To reset the shutdown condition, wait 5 seconds and then press the reset button or use
the remote control. In the latter case, the maximum number of consecutive reset attempts
allowed is 3 in the space of 24 hours, after which the alarms must be reset from the boiler.
Flame
detected
Flame
propagation
Po
w
e
r
Time