21
GB
APPLIANCE
M
Main features
- EMC filter on the board. Protection fuse on the board.
- Stable timers not affected by the voltage and/or temperature changes (system management by microproces-
sor).
- Protection in case of low/high voltage power supply.
- Monitoring of air pressure switch functioning. Non-volatile block. remote reset;
- Intermittent functioning: regulation and self-diagnosis stop every 24h. As a rule at least once every 24 hours
to allow the electrical equipment to check its efficiency at start-up. Normally burner shutdown is ensured by
the boiler remote control. Otherwise it is necessary to install a time switch in series that provides for burner
shutdown at least once every 24 hours.
- Air damper control for functioning at several stages or modulating.
- Built-in button or two-colour LED for indicating functioning status and anomalies;
- Safety valve sealing control function.
Table of times
Pre-ventilation
time
20s
(*)
Pre-ignition
time
0.5s
(*)
Safety
time
3s
(**)
Air pressure switch consent max. delay before block
10s (***)
Functioning
regulator
management
delay
10s
Intervention
time
to
switch-off
<
1s
Parasite flame signal duration maximum timing before block
10s
Post-ventilation
time
from
0
to
255
s
Key pressing limit timing for release
0.2s ≤ && ≤ 4s
Continuous key pressing timing for temporary shutdown
> 5s
Manual
mode
functioning
timeout
4
minutes
Timeout
communication
with
display
60s
Maximum duration of access to menus
120s
(*) Minimun timing guaranteed
(**) Maximun timing guaranteed
(***) Time not set up in starter. Swicth air signal attended entire time of opening time.
Special functions
Network frequency self-learning
The board can automatically optimise the functioning times in relation to the network frequency measured (50 or
60 Hz).
Network frequency self-learning
The board can automatically optimise the functioning times in relation to the network frequency measured (50 or
60 Hz).Temporary shutdownWith ignition request in progress or burner functioning, it is possible to temporarily
force a stop by continuous pressing of the key for longer than 5s (yellow fast flashing).A new start-up cycle is allo-
wed only when the key is released.It is possible to activate the function in question also with the external release
button.The function in question can only be activated by accessing the INSTALLER MENU.
Protection in case of low voltage power supply
The power supply voltage must be at least 180Vac in order to allow a starting cycle to be performed.If the network
voltage falls below 156Vac, the appliance stops and signals the anomaly.The starting cycle can only be carried
out again if the power supply voltage exceeds 180Vac.
