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9. Electrical and functional scheme
9.01 Main components layout on electronic boards
Potentiometer adjustment
P1 = Central heating fl ow temperature adjustment
P2 = Factory set; don't touch
P3 = Central heating fl ow output adjustment
P4 = Ignition gas pressure adjustment
P5 = Factory set - Do not adjustment
FAN
PC
PNO
L
X6
10
9
8
X8
X7
JP01 ON = Delay between shutdown and re-ignition disabled
JP01 OFF = Delay between shutdown and re-ignition enabled
JP02:
Jumper on for natural gas
Jumper on for LPG
N
HL
HL
MV1 MV2 MV3 MV4
7
6
5
4
3
2
1
RY1
RY2
PMF03F
TEMPRA 24
X1
X2
X3
X9
N
L
2
1
2
1
3
1
3
+
-
P5
+
-
P4
RY101
X12
RY100
X4
13
12
11
2
1
10
9
8
7
P1
-
+
CH
X11
2
1
9
8
7
6
5
4
3
2
1
L3
X10
L2
L1
Nat/LPG
JP02
Trasformatore
JP01
temp.
Temp.
10 °C
sensor
25 °C
NTC
60 °C
(34) (42)
80 °C
5
4
6
3
2
1
P2
-
+
DHW
+
-
P3
L4
L5
Fig. 39
Ohm
20kOhm
10kOhm
2,5kOhm
1,25kOhm
39
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