Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 22

Installation sequence
Fitting the feed
2.
1.
Fig. 15
1. Screw in the adjustable foot at the support plate
(foot) of the feed.
2. Secure the support plate (foot) of the feed to the
feed with screws and washers.
3. Secure the feed to the boiler with screws
M 10 x 50, torque 50 Nm.
Align the adjustable foot.
4. Note
The light barrier sensor leads are pre-assembled
on the boiler.
Install the light barrier sensors centrally with refer-
ence to the sight glass.
Install the light barrier sensor (transmitter) on the
retaining bracket on the feed. Plug in the connect-
ing cable on the light barrier sensor and secure.
See page 42.
22
5.
4.
4x
3.
5. Install the light barrier sensor (receiver) on the front
of the boiler. Plug in the connecting cable on the
light barrier sensor and secure.
Identification of the light barrier sensor
To differentiate between transmitter and receiver, note
the item designation of the sensor:
S = transmitter
E = receiver