Heating mode
Min
fan
speed
(rpm)
Max fan speed (rpm)F2040
CBATho-A
Tho-R
390740600600a
390740740600b
390740740740c
Tho-R
Tho-A
Fan speed (rpm)F2040
MaxMin
740390
The fan speed is checked every 15 seconds so that the
temperature difference between the outdoor temper-
ature (Tho-A) and heat exchanger temperature (Tho-
R1, -R2), the highest one, is within a certain range.
Fan speed(Tho-A) - (Tho-R)
Reduction by 10 rpmLess than 3 °C
Maintains the speedBetween 3 °C and 6 °C
Increase by 10 rpmAbove 6 °C
When the outdoor temperature (Tho-A) is greater than
25 °C, the fan speed is checked by the low pressure
(LPT).
Fan speedLPT
Reduction by 10 rpmHigher than 1.1 MPa
Maintains the speedBetween 1.0 and 1.1 MPa
Fan speedLPT
Increase by 10 rpmBelow 1.0 MPa
NIBE™ F2040Chapter 4 | Description of functions20