Message And Safety Connections (Safety Chain) With Distribution Terminal - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Electrical connections

Message and safety connections (safety chain) with distribution terminal

Fig. 26
Set the required parameters during commissioning; see from page 53.
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For connections, see separate "Connection and wiring diagram".
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Signal and safety connections
Clamps Function
PE/X1 Earth conductor
LP1.X2.N Neutral conductor
LP1.X3.16 Control phase
(cont.)
Explanation
Terminals for earth conductors of all associated system
components
Terminals for the neutral conductor of the heat pump
control unit
Factory-fitted
Control unit power supply
Factory-fitted
Installation sequence
39