Operating instructions

148
A7 Connection adaptor
A8 LON communication module
A9 Internal extension H1
S1 ON/OFF switch
S2 Reset button
X... Electrical interfaces
!
Outside temperature sensor
?
Flow temperature sensor, low
loss header
%
Cylinder temperature sensor
(plug on the cable harness)
sÖ
Internal circulation pump
dG
Gas solenoid valve
fÖ
Power supply [terminals]
lH
Power supply accessories and
Vitotrol 100
a-Ö
Fan motor
a-ÖA
Fan motor control
aYA
Gas pressure limiter
aVG
KM BUS
Designs
External connection diagram
(cont.)
5457 552 GB