144
Fig. 88
A1
Main PCB
X...
Electrical interfaces
§
Boiler water temperature sensor
$
Outlet temperature sensor
aA
Ionisation electrode
aG
Flue gas temperature sensor
dÖ
Stepper motor for diverter valve
fJ
Temperature limiter
gF
Ignition unit
a-Ö
Fan motor
a-Ö
A Fan motor control
dG
Gas solenoid valve
Connection and wiring diagram
Connection and wiring diagram
–
internal connections
5789 302 GB
Appendix
Summary of Contents for B2TB
Page 6: ...6 15 Keyword index 152 Index Index cont 5789 302 GB ...
Page 117: ...117 Parts lists Hydraulics 5789 302 GB Components ...
Page 154: ...154 5789 302 GB ...
Page 155: ...155 5789 302 GB ...