Viessmann VITODENS 200-W WB2B Series Start-Up/Service Instructions page 39

Coding Level 1
(continued)
Overview of coding addresses
Coding (factory default setting)
Summer setback (econ.) A1, M2
A5:5 With heating circuit pump logic function
Minimum supply temperature
C5:20 Electronic minimum supply temperature
limit 68°F / 20°C
Maximum supply temperature A1, M2
C6:74 Electronic maximum supply temperature
limit 165°F / 74°C
Slope A1, M2
d3:14 Heating curve slope = 1.4
Shift A1, M2
d4:0 Heating curve shift = 0
(continued)
Possible change
A5:0 Without heating circuit pump logic function
C5:1
Minimum limit adjustable from 34 to 261°F /
to
1 to 127°C (limited by the boiler coding card).
C5:127 Observe max. possible boiler water temperature.
C6:10 Maximum limit adjustable from 50 to 261°F /
to 10 to 127°C.
C6:127 Observe max. possible boiler water
temperature of 165°F / 74°C.
d3:2 Heating curve slope adjustable from 0.2 to 3.5
to (see page 31)
d3:35
d4:-13 Heating curve shift adjustable from -13 to 40 K
to (see page 31)
d4:40
Coding
39