Carel pCO1 User Manual

Modular Standard HP Chiller for Carel driver
Carel code +030221236- Rel. 1.0 dated 7 July 2003
36
Example
Control set point 12.0ºC
Free Cooling Differential 4.0ºC
Free Cooling valve % threshold 40%
Condensation inverter % threshold: 80%
Proportional area for control of Free Cooling valve = 10.0 to 11.6 ºC
Control Set-point - Free Cooling Differential/2 = 10.0ºC
Maximum % threshold for valve opening = 1.6ºC
Proportional area for control of condensation inverter = 13.2 to 16.0 ºC
Control Set-point - Free Cooling Differential/2 = 10.0ºC
Control Set-point - Free Cooling Differential/2 + inverter speed minimum % Threshold = 13.2ºC
15.9.2 Proportional + integral control
The devices, whether they are valve or fans, will be activated in the second half of the control differential through the effect of the integrating
control. Their activation will be tied to the set integrating constant: the slower it is, the greater the value attributed to the specific parameter.
Evaporator Outlet Temperature
valve maximum opening %
threshold
inverter speed minimum
% threshold
Free Cooling Differential
0 Volt
10 Volt
Free Cooling Valve 0 to
10 V
Inverter Ramp 0 to 10 V
Free Cooling Set point
Free Cooling Differential

Carel pCO1 Specifications

General

Brand	Carel
Model	pCO1
Category	Chiller
Language	English