Carel pCO1 User Manual

Modular Standard HP Chiller for Carel driver
Carel code +030221236- Rel. 1.0 dated 7 July 2003
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Diagram of temperature control at outlet:
As long as the temperature remains inside the neutral zone, no compressor is enabled or disabled (outlet temperature between point A and point B).
Compressor enabling request (outlet temperature higher at point B):
As long as the temperature is higher at point B, the compressors are activated with a delay between activations equal to parameter "delay
between activations in neutral zone":
Disabling active devices:
As long as the temperature is lower at point A, the compressors are activated with a delay between activations equal to parameter "delay
between power-downs in neutral zone":
If the temperature falls below the minimum limit, the compressors are forcibly powered down if the times were not satisfied (this control is
introduced to prevent the unit entering antifreeze alarm status).
Compressor
enabling request
Compresso
r
disabling reques
t
Set point
Outlet temperature
Banda neutra
Nneutral zone
Point B
Point A
Outlet temperature
Point B
Time
Time
P3-1P2-1 P2-2P1-2P1-1 C2C1
Delay between activations
in neutral zone
Outlet temperature
Point A
Time
Time
P3-2
P3-1 P1-2P2-1
P1-1
P2-2C2
Delay between activations
in neutral zone
Compressor OFF
minimum limit

Carel pCO1 Specifications

General

Brand	Carel
Model	pCO1
Category	Chiller
Language	English