95
5693 982 - 04
Vitotronic 300, GW2B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
(continued)
Code 1
Coding in the factory set condition
Possible change
Min. supply temperature heating circuit
C5:20
Electronic minimum supply temperature limit
68°F (20°C) (only in operation at standard
room temperature).
C5:1
to
C5:127
Minimum limit adjustable from 34 to 261°F
(1 to 127°C) (limited by boiler-specific
parameters).
Max. supply temperature heating circuit
C6:75
Electronic maximum supply temperature limit
set to 167°F (75°C).
C6:10
to
C6:127
Maximum limit adjustable from 50 to 261°F
(10 to 127°C) (limited by boiler-specific
parameters).
Heating program - changeover
d5:0
With external heating program changeover
(observe setting for coding addresses “5d”,
“5E” and “5F” in the “General” group).
Heating program switches to “Constant central
heating with reduced room temperature” or
“Standby mode” (subject to the settings of the
set reduced room temperature).
d5:1
The heating program changes to “Constant
operation with standard room temperature”.
External heating program changeover to heating circuit
d8:0
No heating program changeover via extension
EA1.
d8:1
Heating program changeover via input DE1
at extension EA1.
d8:2
Heating program changeover via input DE2
at extension EA1.
d8:3
Heating program changeover via input DE3
at extension EA1.
Parameter address b5:...
With heating circuit pump logic function:
Heating circuit pump “OFF”
Heating circuit pump “ON”
1
RT
actual
> RT
set
+ 5 K
RT
actual
< RT
set
+ 4 K
2
RT
actual
> RT
set
+ 4 K
RT
actual
< RT
set
+ 3 K
3
RT
actual
> RT
set
+ 3 K
RT
actual
< RT
set
+ 2 K
4
RT
actual
> RT
set
+ 2 K
RT
actual
< RT
set
+ 1 K
5
RT
actual
> RT
set
+ 1 K
RT
actual
< RT
set
6
RT
actual
> RT
set
RT
actual
< RT
set
- 1 K
7
RT
actual
> RT
set
- 1 K
RT
actual
< RT
set
- 2 K
8
RT
actual
> RT
set
- 2 K
RT
actual
< RT
set
- 3 K
