80
EQJW146F002 EN
Functions of the heating circuit
6.1.2
Four-point characteristic
The four-point characteristic allows you to define your own heating characteristic. It is de-
fined by four points for the outdoor temperature, flow temperature, reduced flow temperature
and return flow temperature. The 'Max. flow temperature' and 'Min. flow temperature' pa-
rameters mark the upper and lower limits of the flow temperature.
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
P1 to P4 Points 1 to 4
t
VL
Flow temperature
t
A
Outdoor temperature
- - - min Min. flow temperature
- - - max Max. flow temperature
–––––––––
Four-point characteristic
– – – – – – Reduced four-point
characteristic
Fig. 4: Four-point characteristic
− The 'Day set point' and 'Night set point' parameters are no longer available when the four-
point characteristic has been selected, provided no additional functions (e.g. optimization,
flash adaptation) have been selected.
− The four-point characteristic function can only be activated when the adaptation function is
not active (CO1, 2 > F08 - 0).
Functions
WE
Configuration
Adaptation
0
CO1, 2 > F08 - 0
Four-point characteristic
0
CO1, 2 > F11 - 1
Parameters
WE
Parameters: value range
Outdoor temperature
Point 1
Point 2
Point 3
Point 4
–15.0 °C
–5.0 °C
5.0 °C
15,0 °C
PA1, 2 > P05:
–50,0 bis 50,0 °C
Note
