2.4
Calibrating sensors
The sensor calibration is performed in the configuration level.
4
Fb17 = ON: Pt 100 and Pt 1000 sensors
4
Fb17 = OFF: Pt 100 and PTC sensors
The values measured by all the connected sensors can be changed or reset. To proceed, set
the sensor value displayed to the temperature measured directly at the measuring point (ref-
erence temperature).
Activate calibration with Fb1 to Fb7.
An incorrect calibration can be deleted by setting Fb1 to F7 = OFF.
How to proceed:
Change to the configuration and parameter level.
Select
CO
configuration level.
Enter the configuration level.
Anl
appears on the display.
Press the upward arrow key until Fb25 appears on the display.
(This function block is merely selected to enter the code number. Another function
block that is protected by the code number can be also used.)
Press the enter key.
0
appears on the display.
Enter and confirm the code number (–> section ) .
Close function block Fb 25.
Select the function block of the sensor that is to be calibrated (Fb1 to Fb7):
Fb1: Supply air sensor
Fb2: Exhaust air sensor
Fb3: Outdoor sensor
Fb4: Return flow sensor, heating coil
Fb5: Room sensor
Fb6: Return flow sensor, HR (system 3 and 5)
Fb7: Mixed air or extract air sensor (system 2 and 4)
Press the enter key.
A temperature appears on the display.
Fb_
starts to blink.
Set the temperature measured at the actual point of measurement.
The actual temperature at a thermometer direct at the point of measurement can be
used as the reference temperature.
EB 5477 EN
21
Start-up