Viessmann B2HF, Installation And Service Instructions For Contractors

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1085.0 "Cylinder heating: Set start point"
Setting Explanations
Start point for DHW heating below set DHW tempera-
ture
25 Delivered condition start point 2.5 K below set DHW
temperature
10 to 100 Adjustable start points:
10:
1.0 K ...
100: 10.0 K
Irrespective of this, the stop point is 2.5 K above the
set DHW temperature.
1087.0 "Max. duration, DHW heating"
Setting Explanations
After a set period of time has elapsed, DHW heating
ends even though the set DHW temperature has not
yet been reached.
Not adjustable on gas condensing combi boilers
60 Factory setting 60 min
0 No time limit for DHW heating
1 to 240 Duration of DHW heating adjustable from 1 to 240 min
in 1 min increments
1087.1 "Min. delay until next DHW heating"
Setting Explanations
Minimum delay before DHW heating starts again,
even though there is a demand.
Cannot be adjusted on gas condensing combi boilers
60 Delivered condition, delay of 60 min
60 to 240 Delay adjustable from 60 to 240 min in 1 min incre-
ments
1101.2 "Set speed of the primary circuit pump for DHW heating"
Setting Explanations
Set speed of the internal circulation pump when oper-
ated as a circulation pump for cylinder heating
... Delivered condition specified by settings specific to
the appliance
20 to 100 Set speed adjustable from 20 to 100 %
System configuration (parameters)
DHW
(cont.)
5593201
Parameter