Routing Power/Pump Accessory Cables; Accessory Kit For Heating Circuit With Mixing Valve Connections - Viessmann Vitocrossal 300 CU3A 26 Installation Instructions Manual

Control Connections
Connections
(continued)
Boiler
Control
KM Bus
Accessory
32
Extension Module EA1
Vitocrossal 300 CU3A 26 to 199 Installation

Routing power/pump accessory cables

Route cables from the accessory connection modules
underneath through the boiler frame and out the openings
in the back of the jacketing.
Note: Connecting cables will be damaged if they touch
hot components. When routing and securing
power cables on site, ensure that the maximum
permissible temperatures for these cables are not
exceeded.
Accessory kit for zone circuits or heating circuit with
mixing valve connections
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 HK1B).
For details on coding and connection to the
control, refer to the Vitocrossal 300 CU3A
Service Instructions.
For details on installation, refer to the accessory
kit Installation Instructions.