EVCO EPK4BHQ1AH Installer manual - Manual (Page 70)

EVCO S.p.A. c-pro 3 NODE kilo AHU | Application manual ver. 1.0
page 70 of 114
PF01: control mode fans
PF02: control band
PF03: Minimum fan speed
PF04: maximum fan speed
PF07: Control temperature (room temperature, discharge air temperature)
6.10.5 Modulating control with steps to enable
The same logic for the modulating control applies with the additional possibility of shutting down the fan with a specific
step on the control ramp. For this control select PF01=4.
The fan switch off point corresponds to the value of the room temperature control set point. The fan switch on and off
commands are delayed in order to avoid high currents (parameter PF09).
Alternatively the variable fan speed can be controlled by the discharge air temperature sensor (PF07).
The fan speed is identical for both flow and return fans.
PF01: control mode fans
PF03: Minimum fan speed
PF07: Control temperature (room temperature, discharge air temperature)
PF08: Differential of On/Off steps on ramp of control of fan modules
PF09: Delay time (on and off) of On/Off steps on ramp of control of fan modules
OFF
PF03: Min
Fan ramp
PF08