EVCO S.p.A.
c-pro 3 nano CHIL | Application manual ver. 1.0 | Code 144CP3NCHE104
page 69 of 90
8.19.1 Variation of setpoint with timer scheduler
With parameter PH28 you can adjust the setpoint with timer scheduler (settings parameter for the scheduler). The real control setpoint
depends on the workday and the relative offset.
8.19.2 Dynamic setpoint
With the parameter Enable dynamic setpoint PH27, you can perform compensation of the dynamic setpoint on the external
temperature. In this case, the control setpoint will take on a value between the standard setpoint (equivalent to the Initial external
temperature threshold) and the plus setpoint on Dynamic offset (equivalent to the Final external temperature threshold), both for
chiller operation and for that of the heat pump. Between the two compensation points, the movement is linear and the curve takes on a
different meaning depending on the offset mark.
With offsets that have a value below zero, the behaviour is the following:
The parameters for this function are:
• PC64 = Maximum dynamic offset for summer operation (chiller)
• PC65 = Start compensation temperature for dynamic summer setpoint
• PC66 = End compensation temperature for dynamic summer setpoint.
With offsets that have a value above zero, the behaviour is the following:
The parameters for this function are:
• PC67 = Maximum dynamic offset for winter operation (heat pump)
• PC68 = Start compensation temperature for dynamic winter setpoint
• PC69 = End compensation temperature for dynamic winter setpoint
8.19.3 Forced Switch-off
This function allows forced switch-off of all compressors when the AF output temperature falls below the Summer forced switch-off set
point (if operating with chiller), or exceeds/goes over the Winter forced switch-off set point (if operating with heat pump). The
compressors may be started back up only when the temperature crosses the setpoint again.
SP + PC67
SP
Setpoint
External T
PC68 PC69
SP
SP + PC64
Setpoint
External T
PC65 PC66
To Next Page
Loading...
Need help?
General
