Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 57

Electrical connection
Make sure the following is observed for on-site cable:
■ Cable length:
Min. 3 m
Max. 30 m
■ Recommended connecting cable and further infor-
mation: See chapter "Integrating a heat pump into a
CAN bus system".
Fitting the programming unit
Note
The integrated WiFi communication module supports
commissioning, maintenance and servicing via the
"Vitoguide app" as well as operation via the "ViCare
app".
The access details required for establishing the con-
nection are available in triplicate as labels on the back
of the programming unit. Remove these 3 labels
before installing the programming unit.
Apply the labels in the following positions:
For commissioning, affix a label to the place marked
■
on the type plate.
■ Affix a label in the field provided in chapter "Switch-
ing WiFi on/off" for subsequent use.
■ Affix label in the field provided for the purpose in the
operating instructions.
(cont.)
A
Fig. 48
Programming unit
A
Installation sequence
57