40
150
X1
151
57
41
197
198
2
17
1
15
169
9
145
X15
146
100A
203
204
D
B
A
C
A
Connection, programming unit
B
Battery
C
LED
D
Fuse
Pyromat ECO PCB
s¢F
Secondary air damp-
ers
s¢D
Primary air dampers
a¢Ö
A
Hall sensor
aVH
Not assigned
X15
CAN BUS
aVG
KM BUS
)
Buffer cylinder sensor
!
,
aG
and
aNL
Weather / flue gas
sensor
?
and
aJ
FL and RT sensor
a:K
Lambda probe
a:J
Not assigned
fA
Flue gas fan
gJ
Not assigned
aBA
Fault message
Designs
Overview of PCB
5604 447 GB