Accessing The X3 Plug; Connecting The Low-Loss Header Sensor - Viessmann VITODENS 200-W Installation Instructions Manual

Vitodens 200-W B2HA 112, 150 Installation

Accessing the X3 Plug

Connecting the Low-loss Header Sensor

1. Remove the control unit cover (see page 23).
2. Remove the X3 plug from the control board. Install
the required sensors.
3. Reinstall the control cover.
1. Connect the low-loss header sensor (if used) to
terminals X3.4/X3.5 on the boiler control board.
Control Connections
49