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The
Max. flow temperature
and
Min. flow temperature
parameters mark the upper and lower lim
-
its of the flow temperature.
Functions
WE Configuration
4-point characteristic OFF Co1, 2, 3 -> Fb10 = ON
4-point characteristic OFF Co4 -> Fb03 = ON (Anl 3, 5, 8 and 10)
Parameters
WE Parameter level / Range of values
Flow temperature Point 1
Point 2
Point 3
Point 4
70 °C
55 °C
40 °C
25 °C
PA1, 2, 3 / 20 to 130 °C
Outdoor temperature Point 1
Point 2
Point 3
Point 4
–15°C
– 5 °C
5 °C
15 °C
PA1, 2, 3 / –30 to 90 °C
Return flow temperature Point 1
Point 2
Point 3
Point 4
65 °C
50 °C
35 °C
20 °C
PA1, 2, 3 / 20 to 90 °C
Set-back difference Points 2, 3 20 °C PA1, 2, 3 / 0 to 50 °C
Max. flow temperature 90 °C PA1, 2, 3 / 20 to 130 °C
Min. flow temperature 20 °C PA1, 2, 3 / 20 to 130 °C
EB 5179 EN 41
Functions of the heating circuit
t
VLmax
t
VLmin
t
VL
100
90
80
70
60
50
40
30
20
10
[˚C]20 15 10 5 0 –5 –10 –15 –20
P1
P2
P3
P4
[˚C]
t
A
Fig. 3 · 4-point characteristic
P1 to 4 Points 1 to 4
t
VL
Flow temperature
t
A
Outdoor temperature
...min Minimum t
VL
...max Maximum t
VL
4-point characteristic
Reduced 4-point
characteristic