Compiled Fault Indicator Alarm; 120 Vac, 60 Hz - Viessmann Vitotronic 300 KW3 Installation Instructions Manual

Electrical connections
Burner
(continued)
Electrical connection of two-stage or modulating burners
To control unit
To burner
2-stage or modulating module with
potential-free burner control output

Compiled Fault Indicator Alarm

L G N
120 VAC Alarm Connection on
Power Pump Module
18
Terminal codes
T6, T7, Control circuit "two-stage
T8 burner" or "modulation
controller" (via two-point
controller with two-stage
operation; via three-point
controller with
modulating operation)
Signal direction:
q
Control unit → burner
Signal direction:
p
Burner → control unit
The connection is made via the
extension for 2-stage/modulating
burner.
See Installation Instructions for
boiler and extension for
2-stage/modulating burner.
4. Insert the connector
191
corresponding terminal and apply
strain relief to the cable (see
"Application of Strain Relief").
Rated voltage:

120 VAC, 60 Hz

Rated current:
1. A visual and / or audible alarm
indicator can be connected.
2. Connect wires to respective
terminals on the Power Pump
Module.
in the
3 FLA