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T e c h n i c a l N o t e b o o k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T e c h n i c a l T r a i n i n g
Installer Menu: The external sensor operation
Setting is done using 2 parameters:
- The sensor slope to be chosen on the curve below (1):
To know which slope to select, you need to know the local minimum temperature which was used for installation calculations.
Choose the slope that gives the maximum heating setting at the local minimum temperature.
See example below.
1
50
60
70
80
90
30
40
15
20
4.0
0.2
0.6
1.2
3.0
1.5
1.0
2.0
2.5
3.5
28
38
25
50
60
70
80
90
30
40
15
20
4.0
0.2
0.6
1.2
3.0
1.5
1.0
2.0
2.5
3.5
25
16
2
Heating
temperature (°C)
Temperature setting
Outside temperature (°C)
- Heating curve base correction (2):
This parameter is used to correct the ambient temperature if the real temperature is different from the expected temperature.
The factory setting (20°) corresponds to an estimated ambient temperature. This value can be increased (up to 25°C) or
reduced (down to 15°C).
E.g.: desired temperature = 20°C, real temperature = 19°C => set to 21°C to offset the curve.
Note: if the outside sensor is associated with a modulating thermostat, the curve base adjusts itself automatically.
1
50
60
70
80
90
30
40
15
20
4.0
0.2
0.6
1.2
3.0
1.5
1.0
2.0
2.5
3.5
28
38
25
50
60
70
80
90
30
40
15
20
4.0
0.2
0.6
1.2
3.0
1.5
1.0
2.0
2.5
3.5
25
16
2
Example:
Either an installation equipped with radiators calculated according to the European standard NF EN 442 (Delta T between air and water = 50 degrees):
the maximum heating temperature will then be 73°C (factory setting). Or a minimum local temperature of -6°C.
In tracing on the diagram below the vertical from Text -6°C, then the horizontal to 73°C, we arrive at a slope of 2.0.
With an e-bus thermostat
(Exacontrol E...)
the slope
is set on the thermostat
.
This setting no longer
appears in the boiler menu.
With an e-bus thermostat
(Exacontrol E...)
the curve
base adapts itself as
needed
. This setting no
longer appears in the boiler
menu.