Viessmann VITODENS 200-W B2HA 150 Service Instructions Manual page 88

Function Description
Control Functions
Venting program
During the venting program, the circulation pump will
be alternately switched on and off for 30 seconds
respectively over a period of 20 minutes.
The burner is switched off during the venting program.
Activate venting program: See "Venting the heating
system".
Bleeding air program
During the bleeding air program, the circulation pump
will be alternately switched on and off for 30 seconds
respectively over a period of 20 minutes.
The burner is switched off during the venting program.
Activate venting program: See "Venting the heating
system".
Fill program
If the system is to be filled with the control unit switched
ON, code "2F:2" starts the pump. The burner shuts down
if this function is enabled via coding address "2F".
The program is automatically disabled after 20 minutes
and coding address "2F" is reset to "0".
88
(continued)
Vitodens 200-W B2HA 112, 150, 399, 530 Service
Reducing the heat-up time
During the transition from operation with reduced
room temperature to operation with standard room
temperature, the boiler water or supply temperature will
be raised in accordance with the selected heating curve.
The boiler water or supply temperature can be
automatically increased. The value and duration of the
additional increase of the set boiler water temperature or
supply temperature can be adjusted in coding addresses
"FA" and "FB".
Time in hours
A Start of operation with standard room temperature
B Boiler water / supply temperature based on selected
heating curve
C Boiler water / supply temperature based on coding
address "FA": 50°C + 20% = 60°C
D Duration of operation with raised boiler water /
supply temperature based on coding address "FB":
60 minutes