Viessmann Vitovalor 300-P Installation And Service Instructions For Contractors page 107

Coding level 2
(cont.)
Coding in the delivered condition
A9:7 With pump idle time: heating circuit
pump "OFF" when set value is
modified by changing the operating
mode or changing the set room
temperature
b0:0 For heating circuit with mixer and
remote control only:
Heating mode/reduced mode:
Weather-compensated
b2:8 Only for heating circuit with mixer
and remote control. Operation with
room temperature hook-up must
be programmed for the heating cir-
cuit:
Room influence factor 8
b5:0 For heating circuit with mixer and
remote control only:
Without room temperature-de-
pendent heating circuit pump logic
function
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 when operat-
ing at standard room temperature)
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
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
Possible change
A9:0 Without pump idle time
A9:1 With pump idle time, adjustable from
to 1 to 15.
A9:15 1 = short idle time
15 = long 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-compen-
sated
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 Heating circuit pump logic function,
to see the following table.
b5:8
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 Heating curve slope adjustable from
to 0.2 to 3.5 (see page 88)
d3:35
d4:–13 Heating curve level adjustable from
to 13 to 40 (see page 88)
–
d4:40
Codes
+ 4 K
+ 3 K
+ 2 K
+ 1 K
1 K
–
2 K
–
3 K
–
107