Electrical Connections (With Vitotronic Control) - Viessmann VR1 22 Installation And Service Instructions Manual

Vitorond 100, VR1 22 to 33, 91 to 140 Installation and Service
Electrical Connections (with Hydrostat 3250-Plus control)
Riello burner
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
Carlin burner
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
IMPORTANT
Red wire not used in this application. Use wire nuts to
cap both ends (inside high limit control and Riello burner
sub- base).
Burner Set-up
(continued)
29