59
The control unit must be matched to the system equip-
ment level.
■
To do this, select the applicable system scheme.
"System examples"
■
Set the codes according to the accessories fitted:
Accessories installation and service instruc-
tions
Note
Various system components are recognised automati-
cally by the control unit and the relevant codes are set
automatically.
For individual coding steps, see page 63.
Adjusting heating curves
The heating curves represent the relationship between
the outside temperature and the flow temperature.
Simplified: the lower the outside temperature, the
higher the flow temperature
The flow temperature in turn affects the room tempera-
ture.
Settings in the delivered condition:
■
Slope = 0.8
■
Level = 0
Note
If the heating system includes heating circuits with
mixer, then the flow temperature of the heating circuit
without mixer is higher by a selected differential (4 K in
the delivered condition) than the flow temperature of
the heating circuits with mixer.
The differential temperature is adjustable via coding
address "9F" in the
"General"
group.
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
35
30
25
20
15
10
5
0.4
0.6
0.8
1.0
1.2
-30
1.8
1.6
-14
1.4
B
A
Set room temperature
in °C
Fig. 46
Slope setting ranges:
A
Underfloor heating system: 0.2 to 0.8
B
Low temperature heating system: 0.8 to 1.6
Setting the set room temperature
Individually adjustable for each heating circuit.
The heating curve is offset along the set room temper-
ature axis. With the heating circuit pump logic function
enabled, the curve modifies the start and stop charac-
teristics of the heating circuit pump.
Commissioning, inspection, maintenance
Matching the control unit to the heating system
5678 044 GB
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
Page 163: ...163 5678 044 GB ...