Viessmann Vitoladens 300-W Service Instructions For Contractors page 38

Codes
Code 1
(cont.)
Coding in the delivered condition
Subscriber no.
77:1 LON subscriber number
Summer econ. A1/M2
A5:5 With heating circuit pump
logic function
Min. flow temp. A1/M2
C5:20 Electronic minimum flow
temperature limit 20 °C
Max. flow temp. A1/M2
C6:74 Electronic maximum flow
temperature limit set to
74 °C
Slope A1/M2
d3:14 Heating curve slope =
1.4
Level A1/M2
d4:0 Heating curve level = 0
38
Possible change
77:2 LON subscriber number,
to adjustable from 1 to 99:
77:99 1 - 4 = Boiler
5 = Cascade
10 - ... = Vitotronic 200-H
99 = Vitocom
Note
Allocate each number
only once.
A5:0 Without heating circuit
pump logic function
C5:1 Minimum limit adjustable
to from 1 to 127 °C
C5:127
C6:1 Maximum limit adjustable
to from 1 to 127 °C
C6:127
d3:02 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)