Accessory Kit; Closing The Boiler - Viessmann VITODENS 222-F Installation Instructions Manual

Vitodens 222-F, B2TA 19 and 35 Installation

Accessory Kit

Boiler
Control
KM Bus
Accessory

Closing the Boiler

Extension Module EA1
The mixing valve controller kit can only be used with
wall-mounted gas-fired hot water heating boilers and
a weather-responsive control; it can be used as an
alternative for a Vitotronic control.
For details on coding and connection to the
control, refer to the Vitodens 222-F B2TA
Service Instructions.
For details on installation, refer to the accessory
kit Installation Instructions.
Closing the control cover
1. Install the cover onto the control board.
2. Flip the control board back into position.
3. Secure the locking tabs as shown.
Control Connections
49