Viessmann VITOCROSSAL Series Installation Instructions Manual page 24

Connecting the internal connecting cables to...
100
35
X19
Fig. 28
Extra low voltage (ELV) plug
Ionisation electrode
aA
X8 Cable harness: Boiler water and flue gas temper-
ature sensor, fan control
X9 Gas train modulation coil control
up to 80 kW additionally
ber pressure limiter and water pressure switch
X19 Cylinder temperature sensor
24
54
11
X9
X8
, for boilers
a:Ö
A, combustion cham-
a:Ö
%
(cont.)
Plug 230 V~
Gas train
dG
Ignition unit
gF
Fan
a-Ö