INNOV@-pCO1-IOM-0907-E
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2.4 Outlet limit
This function prevents too cold air from circulating in the environment, thus safeguarding health of any
exposed person. A temperature probe must be positioned on the air-conditioning unit outlet and parameters
“Outlet set point” and “Outlet differential” shall be set. Such parameters identify a limiting zone, as shown in
the following diagram:
Outlet set
100% VARIABLE LIMITATION
TOTAL
LIMITATION 0%
10.0 15.0
5.0°C
Ambient
Outlet differential temp. (°C)
Temperature set
1 COMPRESSOR
23.0 23.5 26.5
Ambient
temp. (°C)
COMPRESSOR 1 COMPRESSOR 2/
C1 can control
23.0 23.5 25.0 26.5
Ambient
temp. (°C)
COMP.1 C.1 c.c. COMP.2 C.1 c.c.
23.0 23.5 24.2 25.0 25.7 26.5
Ambient
temp. (°C)
0-10V COLD WATER VALVE
100%
0%
23.0 23.5 26.5
Ambient
temp. (°C)
THREE-POINT COLD WATER VALVE
100%
0%
23.0 23.5 26.5
Ambient
temp. (°C)
As shown in the diagram, if outlet temperature ranges between outlet set point and outle t differential, the
cooling devices are limited only partially; the more temperature decreases the more limitation increases.
As regards dehumidification limitation, the modulation zone is by-passed since dehumidification always
needs the cooling devices maximum capacity. In practice, the devices are switched off only if outlet
temperature is lower than differential; the devices are then switched on again if outlet temperature reaches
the outlet set point, as shown in the following diagram:
Outlet set
ON OUTLET LIMITATION
TOTAL
LIMITATION OFF LIMITATION OFF
10.0 15.0
5.0°C
Outlet
Outlet differential temp. (°C)