138
Heating curve (level and slope)
0.2
Outside temperature in °C
Flow temperature
in °C
Slope
2.4
2.6
2.8
3.0
3.2
3.4
90
80
70
60
50
40
30
0
-10
-20
10
2.0
2.2
Set room temperature
in °C
35
30
25
20
15
10
5
0.4
0.6
0.8
1.0
1.2
1.4
-30
1.8
1.6
-14
C
B
A
Fig. 84
Example for outside temperature of
-14 °C
:
A
Underfloor heating system, slope 0.2 to 0.8
B
Low temperature heating system, slope 0.8 to 1.6
C
Heating system with a boiler water temperature in
excess of 75 °C, slope 1.6 to 2.0
■
Upper control range limit
Electronic maximum temperature limit
Setting range: 10 to 100 °C
Change via coding address "C6"
Note
The maximum temperature limit is no substitute for
the underfloor heating system temperature limiter.
Temperature limiter for underfloor heating:
If the selected value is exceeded, the temperature
limiter stops the heating circuit pump. The flow tem-
perature decreases only slowly, i.e. it may be several
hours before the system restarts automatically.
■
Lower control range limit
Electronic minimum temperature limit
Setting range: 10 to 100 °C
Change via coding address "C5"
Only active during operation with standard room tem-
perature.
Cylinder temperature control
Cylinder temperature control is a constant temperature
control. It operates by starting and stopping the circula-
tion pump for cylinder heating.
The switching differential is 10 K.
Central heating is switched off during cylinder heating
(when cylinder priority control is activated. See
code "A2", heating group).
Coding addresses
■
Coding addresses that influence cylinder tempera-
ture control:
–
0C, 0D
(DHW group)
–
A2
(Heating group)
For a description, see the relevant coding address in
chapter "Codes".
Function description
Control functions
(cont.)
5679249
Functions
