Features and technical data
Installation, use and maintenance manual – Caldaia 55.1 and 100.2 Tech
17
1
Figure 1.13
100.2 boiler electrical connections diagram - master board
ER
Flame detector
EA
Ignition electrode
CRE
Modulating circulator
MP
Standby contact
VG
Gas valve
Tra
Ignition transformer
SM
Modbus card
TS
Safety thermostat
Pacq
Water pressure switch
SR
Heating delivery probe
EV
Blower
TF
Flue gas thermofuse
SRi
Heating return probe
SPF
Female socket
INAIL
INAIL safety appliances
PRM
Minimum pressure switch
PB
Maximum pressure switch
TB
Lock thermostat
ne
Black
ce
Light blue
ma
Brown
ar
Orange
gi
Yellow
bi
White
gr
Grey
2 Sch
em
a
elettric
o_R
1
K 1
00
RA
I
N_fo
rma
to
ma
ce
ma
ce
ma
ce
ma
gi
bi
gr
EV
ce
ma
ce
ma
EA
VG
Tra
ce
ma
ER
TS
TF
SR
ar ar
ce ma ma ce
ne ne
Pacq
11
10
9
8
7
12
13
14
15
16
17
M12
M9
M7
M5
M2
M4
M8
M10
M15
M16
1
2
3
4
57
61
60
59
58
44 43 42 41 40 39 38
37 36 35 34 33 32
31 30 29 28
27 26
62
63
64
65
66
67
68
51
52
53
54
55
56
5
6
M13
M14
+24V
HS
PWM GND
CRE
SRi
ma
ce
M6
1
2
6
5
eBus
GND
TXOUT RXIN
GND +24V
SM
INAIL
1
C
1
C
PB
p >
t >
TB
p <
PRM
C
1
B
4
S3
T2
T1
N
T
L
B4
S3
T2
T1
N
T
L
SPF
MP