Viessmann Vitocell 100-B Service Instructions Manual page 12

Commissioning, inspection, maintenance
Checking the connections on the water side for tightness
Replacing the Vitosolic 100 or the SDIO/SM1A electronics module
1. Remove thermal insulation towards the front.
2. Remove the Vitosolic 100 towards the front.
or
Extract SDIO/SM1A electronics module towards
the front.
3. Open the control unit enclosure and disconnect the
cables/leads.
Vitosolic 100 & SDIO/SM1A electronics
module installation and service instructions
12
4. Install the new control unit in reverse order.
5. Adjust the Vitosolic 100 to suit the respective
pump.
Vitosolic 100 & SDIO/SM1A electronics
module installation and service instructions