Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 44

Installation sequence
Electrical connections
Inserting cables into the control unit enclosure and
applying strain relief
!
Please note
System damage may result from unsealed aper-
tures in the control unit enclosure
Blank off unnecessary apertures in the control
unit enclosure with unopened cable grommets.
Danger
There is a risk of falling due to slipping and trip-
ping on the ash box.
Do not stand on the ash box.
Preparing cables without integral cable grommet
1.
2.
Fig. 39
1. Cut required openings in the cable grommets.
Overview of electrical connections
Note
For overview of electrical connections on the PCBs,
see "Overview of PCBs", from page 184.
44
(cont.)
2. Route cables through cable grommets and secure
with cable ties.
Note
Strip as little of the insulation as possible, close to
the terminals.
Applying strain relief
2.
1.
Fig. 40
1. Insert cables with cable grommet into the apertures
in the control unit enclosure.
2. Secure cables with cable ties.
Fuel supply system connections to ZPK PCB of the
control unit
Note
For setting the charging scheme (supply system), see
"Hardware" in chapter "Codes".