Characteristics - Sime FORMAT SYSTEM 25 HE Installation And Servicing Instructions

3

CHARACTERISTICS

3. 1 ELECTRONIC BOARD
The electronic board is manufactured in
compliance with the EEC 73/23 low-volta-
ge directives. It is supplied with 230V. The
electronic components are guaranteed
against a temperature range of 0 up to
+60° C. An automatic and continuous
modulation system enables the boiler to
adjust power to the various system requi-
rements or the user's needs.
3. 1 . 1 Fault and malfunction signaling
The indicator LEDS signaling irregular
and/or incorrect operation of the equip-
ment are indicated in fig. 16.
3. 1 .2 Devices
The electronic board is equipped with the
following devices (fig. 15):
– "POT. RISC." trimmer (pos. 6)
Sets the maximum heating power value.
To increase the value turn the trimmer
clockwise; to reduce the value turn the
trimmer anticlockwise.
– "POT. ACC." trimmer (pos. 3)
Trimmer to vary the pressure level upon
ignition (STEP), of the gas valve. It has
been factory set with ignition STEP at 95
Hz. To increase pressure, turn the trim-
mer clockwise; to reduce pressure, turn
8
NOTE: To gain access to the regulating trimmers (2-3-4-6) remove the C.H. potentiometer knob.
14
Operating mode
Stand-by
Flame presence
Flame detection
circuit fault
Ignition lock
Water flow switch (FL)
or limit stat (TL)
intervention
Fan fault
C.H. sensor (SM)
fault
Boiler off
6 4
7 11 2
Bi-colour led 1
Bi-colour led 2
Bi-colour led 1
green ON
green ON
green ON
OFF
flashing orange
flashing green
steady orange
OFF
5
6 4
3
1
9
KEY
10
10 JP1 connector
11 C.H. potentiometer
Bi-colour led 2
OFF
orange ON
flashing orange
red ON
OFF
OFF
OFF
OFF
2
3
1 Bicolour led 1
2 MAX fan speed trimmer
3 Ignition power trimmer
4 MIN fan speed trimmer
5 Bicolour led 2
6 Heating power trimmer
7 ---
8 Fusible (1,6 AT)
9 JP2 connector
Fig. 14
Fig. 15