1.96
Climate Controller Type 148941 / Type 148942 / Type 148943 / Type 148944
Operation manual
16
8.2 Fan Stages
8.2.1 General
Number of stages
1 to 5 fan stages can be selected. The speed of each respective fan
stage is calculated based on the number of fan stages.
Minimum
Minimal fan actuation.
Maximum
Maximum fan actuation.
Fan speed restriction by parameters "Minimum" and "Maximum"
reduces the speed in a linear manner throughout the speed range.
Example:
Fan speed setpoint = 70%
Minimum = 0%
Maximum = 80%
Fan actuation = 56%
Start-up time
To bridge the breakaway torque of the fan, it is actuated at maximum
speed for a set time (factory setting 1s)
Classification
H:
Fan assistance only in heating mode
C:
Fan assistance only in cooling mode
H/C:
Fan assistance in heating and cooling mode
Switching behaviour
The fan is only controlled when the calculated fan control is greater
than or equal to this parameter.
Fan speed restriction
A:
Speed restriction using the "Minimum" and "Maximum"
parameters is only enabled in Automatic mode.
M/A: Speed restriction by the "Minimum" and "Maximum"
parameters is enabled in Manual and Automatic mode.
8.2.2 Threshold values
The threshold values release/lock fan levels, depending on the temperature
measured by the changeover sensor.
Hysteresis
Hysteresis for the threshold values for heating and cooling mode.
Release
Release of fan speed limits by the threshold values.
The function is enabled by the Release parameter, although a
changeover sensor is essential!
If this function is enabled, the heating/cooling symbol flashes if the
unit is to provide heating or cooling because of the temperature
configurations, but the first threshold level has not been activated.
