Viessmann VITODENS 200-W B2HA Installation And Service Instructions Manual page 76

Code 2
Heating circuit 1, heating circuit 2, heating...
Coding in the delivered condition
A7:0 Without mixer economy function
Only for weather-compensated
control unit and heating circuit with
mixer
A8:1 Heating circuit with mixer creates a
demand for the boiler circuit pump
(only for weather-compensated
control units)
A9:7 With pump idle time: heating circuit
pump "OFF" if the set value is al-
tered through a change in operat-
ing mode or through a change in
the set room temperature (only for
weather-compensated control
units)
b0:0 With remote control: heating mode/
reduced mode: weather-compen-
sated (only for weather-compensa-
ted control units; only change the
code for the heating circuit with
mixer)
b2:8 With remote control and for the
heating circuit, operation with room
temperature hook-up must be pro-
grammed: room influence factor 8
(only for weather-compensated
control units; only change the code
for the heating circuit with mixer)
b5:0 With remote control: no room tem-
perature-dependent heating circuit
pump logic function (only for
weather-compensated control
units; only change the code for the
heating circuit with mixer)
76
(cont.)
Possible change
The burner and heating circuit pump
will stop at a variable value, adjusta-
ble between 5 and 35 °C plus 1 °C.
Mixer will be closed. The basis for
this is the adjusted outside tempera-
ture. This is composed of the actual
outside temperature and a time con-
stant that takes account of the way
an average building cools down.
A7:1 With mixer economy function (exten-
ded heating circuit pump logic):
Heating circuit pump also "OFF":
If the mixer has been trying to
■
close for longer than 20 min.
Heating circuit pump "ON":
If the mixer changes to control
■
function
If there is a risk of frost
■
A8:0 Heating circuit with mixer creates no
demand for the boiler circuit pump
A9:0 Without pump idle time
A9:1 With pump idle time, adjustable from
to 1 to 15. The higher the value, the
A9:15 longer the pump idle time.
b0:1 Heating mode: weather-compensa-
ted
Reduced mode: with room tempera-
ture hook-up
b0:2 Heating mode: with room tempera-
ture hook-up
Reduced mode: weather-compensa-
ted
b0:3 Heating mode/reduced mode: with
room temperature hook-up
b2:0 Without room influence
b2:1 Room influence factor adjustable
to from 1 to 64. The higher the value,
b2:64 the greater the room influence.
b5:1 For heating circuit pump logic func-
to tion, see the following table:
b5:8