Viessmann Vitoladens 300-W Service Instructions For Contractors page 52

Codes
Code 2
(cont.)
Coding in the delivered condition
Boiler circuit, mixer circuit
C5:20 Electronic minimum flow
temperature limit in
standard mode 20 °C
C6:74 Electronic maximum flow
temperature limit 74 °C
d3:14 Heating curve slope =
1.4
d4:0 Heating curve level = 0
d5:0 With external heating pro-
gram changeover: Heat-
ing program switches to
"continuous operation
with reduced room tem-
perature"
E1:1 With remote control: Set
day temperature is
adjustable at the remote
control unit from 10 to
30 °C
E2:50 With remote control: No
display correction of the
actual room temperature
E5:0 Without variable speed
circulation pump
E6:65 Maximum speed of the
variable speed pump
65 % of max. speed in
standard mode
52
Possible change
C5:1 Minimum temperature limit
to adjustable from 1 to 127 °C
C5:127 (limited by boiler-specific
parameters)
C6:0 Maximum temperature
to limit adjustable from 10 to
C6:127 127 °C (limited by boiler-
specific parameters)
d3:2 Heating curve slope adjust-
to able from 0.2 to 3.5 (see
d3:35 page 30)
d4:–13 Heating curve level adjust-
to able from –13 to 40 (see
d4:40 page 30)
d5:1 The external heating pro-
gram changeover changes
the heating program to
"Constant central heating
with standard room tem-
perature"
E1:0 Set day temperature
adjustable from 3 to 23 °C
E1:2 Set day temperature
adjustable from 17 to
37 °C
E2:0 Display correction –5 K
to or
E2:49 Display correction –0.1 K
E2:51 Display correction +0.1 K
to or
E2:99 Display correction +4.9 K
E5:1 With variable speed circu-
lation pump; automatic rec-
ognition
E6:0 Maximum speed adjusta-
to ble from 0 to 100 % of max.
E6:100 speed