Viessmann CIB User Manual

32
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 -20510
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. 23
Slope setting ranges:
■
Underfloor heating systems: 0.2 to 0.8
■
Low temperature heating systems: 0.8 to 1.6
Selecting 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
active, the curve modifies the start and stop character-
istics of the heating circuit pump.
Standard set room temperature
90
-20
26 + 20
A
C
D
E
B
Fig. 24 Example 1: Adjustment of the standard set
room temperature 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. 25 Example 2: Adjustment of 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.)
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Viessmann CIB Specifications

General

Brand	Viessmann
Model	CIB
Category	Boiler
Language	English