19
External Switching of the Heating Program
External switching of the heating
program (potential-free contact)
Coding address ”91” enables the
external heating program changeover
to be applied to individual heating
circuits.
Use switching module V for
separate
heating program changeovers for 3
heating circuits .
1.
Connect the potential-free contact to
terminals ”1” and ”2” in connector
.
2.
Insert connector
in terminal
”143” and apply strain relief to the
cable (see “Application of Strain
Relief”).
When the contact is closed, the
manually preselected program can be
changed for all heating circuits at the
same time.
See Vitotronic 300
Service Instructions
Manually pre-selected
heating program
(with contact open)
Code 2
Changed heating program
(with contact closed)
9
or
Central heating
OFF/DHW OFF
d5 : 0
(factory
default)
<–> Permanent operation with reduced room temperature/DHW OFF
w
or
Central heating
OFF/DHW ON
d5 : 1
<–> Permanent operation with standard room temperature/DHW in
accordance with coding address ”64”
rw
Central heating
ON/DHW ON
5
3
0
3
2
6
9
v
1
.3
IMPORTANT
Summary of Contents for Vitotronic 300 KW3
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