Viessmann FB2B Installation And Service Instructions Manual page 87

DHW
(cont.)
Coding in the delivered condition
67:40 For solar DHW heating:
set DHW temperature
40 °C. DHW reheating is
suppressed above the
selected set temperature
(DHW heating blocked by
the boiler).
6C:100 Set speed; internal circu-
lation pump with DHW
heating 100 %
6F:... Maximum output for
DHW heating in %, speci-
fied by the boiler coding
card
71:0 DHW circulation pump:
"ON" according to time
program
72:0 DHW circulation pump:
"ON" according to time
program
73:0 DHW circulation pump:
"ON" according to time
program
Possible change
67:0 Set DHW temperature
to adjustable from 0 to 95 °C
67:95 (limited by boiler-specific
parameters)
6C:0 Set speed adjustable from
to 0 to 100 %
6C:100
6F:0 Max. output for DHW heat-
to ing adjustable from min.
6F:100 output to 100 %
71:1 "OFF" during DHW heating
to the first set value
71:2 "ON" during DHW heating
to the first set value
72:1 "OFF" during DHW heating
to the second set value
72:2 "ON" during DHW heating
to the second set value
73:1 "ON" from once per hour
to for 5 min up to 6 times per
73:6 hour for 5 min during the
time program
73:7 Constantly "ON"
Code 2
87