Viessmann VITODENS 242-F Installation And Service Instructions Manual page 115

"Heating circuit ..."
Coding in the delivered condition
C6:74 Electronic maximum flow
temperature limit 74 °C
(only for weather-com-
pensated control units)
d3:14 Heating curve slope =
1.4
d4:0 Heating curve level = 0
d5:0 With external operating
program changeover (ob-
serve setting for coding
addresses "3A", "3b" and
"3C" in the "General"
group).
Operating program
switches to "Constant
central heating with re-
duced room tempera-
ture" or "Standby mode"
(subject to the setting of
the set reduced room
temperature).
d6:0 At signal "External block-
ing" heating circuit pump
stays in control mode
d7:0 At signal "External de-
mand" heating circuit
pump stays in control
mode
(cont.)
Possible change
C5:127
C6:10
to
C6:127
d3:2
to
d3:35
d4:–13
to
d4:40
d5:1
d6:1
d6:2
d7:1
Code 2
Maximum limit adjustable
from 10 to 127 °C (limited
by boiler-specific parame-
ters)
Heating curve slope adjust-
able from 0.2 to 3.5 (see
page 78)
Heating curve level adjust-
able from –13 to 40 (see
page 78)
The operating program
switches to "Constant op-
eration with standard room
temperature".
At signal "External block-
ing" heating circuit pump
stops (subject to coding ad-
dresses "3A", "3b" and
"3C")
At signal "External block-
ing" heating circuit pump
starts (subject to coding
addresses "3A", "3b" and
"3C")
At signal "External de-
mand" heating circuit pump
stops (subject to coding ad-
dresses "3A", "3b" and
"3C")
115