Viessmann VITODENS 200-W B2HA Installation And Service Instructions Manual page 77

Heating circuit 1, heating circuit 2, heating...
Parameter address With heating circuit pump logic function:
b5:...
Heating circuit pump "OFF"
1 RT
2 RT
3 RT
4 RT
5 RT
6 RT
7 RT
8 RT
Coding in the delivered condition
C5:20 Electronic minimum flow tempera-
ture limit 20 °C (only for weather-
compensated control units)
C6:74 Electronic maximum flow tempera-
ture limit 74 °C (only for weather-
compensated control units)
d3:14 Heating curve slope = 1.4
d4:0 Heating curve level = 0
d5:0 The external operating program
changeover switches the operating
program to "Constant operation
with reduced room temperature" or
"Standby mode" (only for weather-
compensated control units)
d6:0 Heating circuit pump remains in
control mode at "External blocking"
signal
d7:0 Heating circuit pump remains in
control mode at "External demand"
signal
d8:0 No operating program changeover
via EA1 extension
RT + 5 K
>
actual set
RT + 4 K
>
actual set
RT + 3 K
>
actual set
RT + 2 K
>
actual set
RT + 1 K
>
actual set
RT
>
actual set
RT - 1 K
>
actual set
RT - 2 K
>
actual set
(cont.)
Heating circuit pump "ON"
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
RT < RT
actual set
Possible change
C5:1 Minimum limit adjustable from 1 to
to 127 °C (limited by boiler-specific pa-
C5:127 rameters)
C6:10 Maximum limit adjustable from 10 to
to 127 °C (limited by boiler-specific pa-
C6:127 rameters)
d3:2 The heating curve slope is adjusta-
to ble from 0.2 to 3.5 (see page 48)
d3:35
d4:–13 The heating curve level is adjustable
to from
–
d4:40
d5:1 The external operating program
changeover switches to "Constant
operation with standard room tem-
perature" (subject to coding ad-
dresses 3A, 3b and 3C)
d6:1 At signal "External blocking" the
heating circuit pump is stopped
(subject to coding addresses 3A, 3b
and 3C)
d6:2 At signal "External blocking" the
heating circuit pump is started (sub-
ject to coding addresses 3A, 3b and
3C)
d7:1 At signal "External demand" the
heating circuit pump is stopped
(subject to coding addresses 3A, 3b
and 3C)
d7:2 At signal "External demand" the
heating circuit pump is started (sub-
ject to coding addresses 3A, 3b and
3C)
d8:1 Operating program changeover via
input DE1 at EA1 extension
d8:2 Operating program changeover via
input DE2 at EA1 extension
d8:3 Operating program changeover via
input DE3 at EA1 extension
Code 2
+ 4 K
+ 3 K
+ 2 K
+ 1 K
- 1 K
- 2 K
- 3 K
13 to 40 (see page 48)
77