Carel uChiller UCHBD00001230, User Manual

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82
ENG
μc0300053EN rel. 2.2 - 14.12.2021
Functions
5.23.1 Mode 1: outside air temperature;
300053_204_R01
U085 U085
U084
Heat
Cool
Outside
Temp.
If automatic changeover is set based on the outside tempera-
ture, the main temperature control will use the probes confi g-
ured for U036 (start-up) and Uo38 (running) and the set points
SetC (cooling) and SetH (heating).
Fig. 5.b
5.23.2 Mode 2: air return temperature (A/A units)
300053_205_R01
U085 U085
SetU
Heat
Cool
Outside
Temp.
If the automatic changeover is set based on the air return tem-
perature, the main temperature control will also use the same
set point SEtU for changeover.
Fig. 5.c
5.23.3 Mode 3: delivery water temperature (A/W and W/W units)
300053_205_R01
U085 U085
SetU
Heat
Cool
Outside
Temp.
If the automatic changeover is set based on the delivery water
temperature, the main temperature control will also use the
same set point SEtU for changeover.
Fig. 5.d