52
0.2
Outside temperature in °C
Boiler
water
or
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
-5 -10 -15 -20
5
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
-25
1.8
1.6
Fig. 42
Slope setting ranges:
■
Underfloor heating systems: 0.2 to 0.8
■
Low temperature heating systems: 0.8 to 1.6
Adjusting 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.
Standard set room temperature
90
-20
26 + 20
A
C
D
E
B
Fig. 43
Example 1: Adjusting standard set room tem-
perature from 20 to 26 °C
A
Boiler water temperature or flow temperature in °C
B
Outside temperature in °C
C
Set room temperature in °C
D
Heating circuit pump "OFF"
E
Heating circuit pump "ON"
Changing the standard set room temperature
Operating instructions
Reduced set room temperature
+20 14 5
90
-20
D
E
A
C
B
Fig. 44
Example 2: Adjusting the reduced set room
temperature from 5 °C to 14 °C
A
Boiler water temperature or flow temperature in °C
B
Outside temperature in °C
C
Set room temperature in °C
D
Heating circuit pump "OFF"
E
Heating circuit pump "ON"
Changing the reduced set room temperature
Operating instructions
Changing the slope and level
Individually adjustable for each heating circuit.
Commissioning, inspection, maintenance
Adjusting heating curves
(cont.)
5789 302 GB
Summary of Contents for B2TB
Page 6: ...6 15 Keyword index 152 Index Index cont 5789 302 GB ...
Page 117: ...117 Parts lists Hydraulics 5789 302 GB Components ...
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