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Vitotronic 300, GW2B Installation and Service
5693 982 - 04
120
Connection and Wiring Diagram, Type GW2B
Overview
Designs
Legend
A1 PCB, extension for heating circuits 2 and 3 with
mixing
valve
A2 PCB low voltage
A3 PCB 120V~
A6 Programming unit
A7 Optolink PCB/emissions test switch
A8 PCB
A9 Boiler Coding card
A10 LON communication module (accessory)
A11 Power supply unit PCB
A12 Programming unit ON/OFF switch
X
Electrical interfaces