Viessmann VR1 22 - Electrical Connections (with Vitotronic Control)

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5583 571 - 05
Vitorond 100, VR1 22 to 33, 91 to 140 Installation and Service
Burner Set-up
Electrical Connections (with Hydrostat 3250-Plus control) (continued)
Legend
A Power supply, provide disconnect means and
overload protection as required.
B Control case must be connected to earth ground.
Use grounding provided.
C B1 is a in. tab terminal.
D Circulator
E Temperature limit control (when required by local
jurisdiction) (field supplied)
* Field supplied
Legend
A Power supply, provide disconnect means and
overload protection as required.
B Control case must be connected to earth ground.
Use grounding provided.
C B1 is a in. tab terminal.
D Circulator
E Temperature limit control (when required by local
jurisdiction) (field supplied)
* Field supplied
Riello burner
Carlin burner
IMPORTANT
Red wire not used in this application. Use wire nuts to
cap both ends (inside high limit control and Riello burner
sub- base).