Operating instructions

A3 Optolink
A4 Burner control unit
A5 Programming unit
A6 Coding card
A7 Connection adaptor
A8 Communication module LON
A9 Internal extension H1 or H2
S1 ON/OFF switch
S2 Reset button
X... Electric al interfaces
! Outside temperature sensor
? Flow temperature s ensor - low
loss header
% Cylinder temperature sensor
sÖ Internal circulation pump
sK Primary pump
dG Gas solenoid valve
fÖ Power supply
lH Power supply accessories and
Vitotrol 100
a-Ö Fan m otor
aYA Gas gov ernor
aVG KM BUS
Connection and wiring diagram – external . . . (cont.)
109
Designs
5692 619 GB