EVCO EPU2BXP1S1 - Manual (Page 55)

EVCO S.p.A. c-pro 3 micro SAVE/ c-pro 3 kilo SAVE | Application Manual ver. 1.0 | Code 144CP3UKSAE104
EVCO
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6.8.7 Modulation of the air flow with CO
2
probe
This function is enabled only at the times COMFORT. It provides for the modulation of fan speed according to the value
read by the probe of CO
2
and is activated by setting PF01 = 3. The speed modulation takes place according to a PI
control (if PF17 = 0 only proportional control).
PF16 = 1 with parameter adjustment is a ramp like the following:
In case of parameter PF16 = 0 the adjustment is in steps, the steps are calculated according to the previous ramp broken within the
values indicated by the parameters PF21 (value variable speed corresponding to the speed V1), PF22 (value variable speed
corresponding to the speed V2 ), PF23 (value variable speed corresponding to the speed V3)
Note: To use this feature, you must enable the CO2 probe (parameter PH42 = 1) and the relative values of linearization (parameters
PH03 and PH04).
6.8.8 A djusting the static pressure
This feature provides for the modulation of the fan speed as a function of the pressure of canale.e is activated by setting PF00 = 1. The
speed modulation takes place according to a PI control (if PF37 = 0 only proportional control).
The static pressure setpoint supply air is moved up slowly from 0 to the setpoint target when you start the central
unit. The ramp time is defined by parameter PF32, setpoint adjustment ramp static pressure.
PF30: minimum fan speed
PF31: maximum fan speed
PF32: Adjust the static pressure setpoint ramp
PF14:Set
0%
CO
2
PF15: Diff
100%
PF31
Max Vel.
-Pb/2 +Pb/2
Fan Speed
PF30
Min Vel.
Pressure (Pa)
Setpoint