Filter
Top Products
5 Functions of the heating circuit
Which controller functions are available depends on the selected system code number (Anl).
5.1 Weather-compensated control
When weather-compensated control isused, the flow temperature iscontrolled according to the
outdoor temperature. The heating characteristic in the controller defines the flow temperature
set point as a function ofthe outdoor temperature (–> Fig. 2). The outdoor temperaturerequired
for weather-compensated control is measured at the outdoor sensor or received over a current
input.
Measured at the outdoor sensor
Function
WE Configuration
Outdoor temperature – Current input OFF FB18 = OFF
Received over (0)4 to 20 mA current input (a 50
Ω
resistor must be connect to terminals 7(+)
and GND (terminals ½) parallel to the current signal)
40 EB 5476 EN
Functions of the heating circuit
Fig. 2 · Gradient characteristics
t
VL
Flow temperature
t
A
Outdoor temperature