23
Refer to internal wiring diagram supplied with
the Vitotronic control
To # 191
connection
To # 41
connection
Boiler 7-pole
#41 plug
Boiler 7-pole
#41 plug
Adaptor harness
(only for use with damper)
2-stage
module
7-
po
le
#4
1
pl
ug
7-
po
le
#4
1
pl
ug
Class II
transformer
40 VA
Factory wired
junction box
Do not connect
additional 120V
to this junction bo
x
Operating control
Viessmann vent damper
(optional)
Do not operate buner without
boiler control
Never bypass safety
high limit aquastats
5-pole
Motor
53 plug
53 plug
Honeywell S8600B
ignition control
15 Sec
lockout
4-p
ole
#
90
plu
g
Ionization
electrode
Ignition
electrode
Landis & Cyr
QSZ1 Pilot
pilot burner
If vent damper not installed, connect
two boiler 7-pole #41 plugs together
Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper and dangerous operation.
Verify proper operation after servicing.
Warning! Disconnect power before
servicing boiler
If any of the original wire as supplied with the
appliance must be replaced, it must be re-
placed with 105 ºC rated or its equivalent.
Minimum size 16AWG.
Vitogas 050, RS 2-stage with Vitotronic control (Natural Gas)
