Overview Of Electrical Connections; Inserting Cables And Leads Into The Control Unit Enclosure And Applying Strain Relief; Connecting The Outside Temperature Sensor - Viessmann Vitoligno 300-C Installation And Service Instructions For Contractors

Installation sequence
Electrical connection
!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.

Overview of electrical connections

Overview of PCBs and connection and wiring
diagram from page 117.

Inserting cables and leads into the control unit enclosure and applying strain relief

Cable with cast-on cable entry
2.
Fig. 9

Connecting the outside temperature sensor

Plug : Outside temperature sensor
!
Fig. 11
Assigned
1
2
18
(cont.)
3.
1.
Function
Ai
GND
Cable without cast-on cable entry
1.
2.
Fig. 10
Blank off unnecessary knockouts in the lower part of
the control unit with cable grommets (not cut out).
Additional information
Pt1000