Carel µAM User Manual page 61

4 = Enable automatic changeover based on the average of DT between the temperature measured and the set point on each
master e-drofan that is ON and without alarms.
Select only if the following conditions are true at the same time:
• En02=0: 2-pipe system
• En01=1: µC SE connected
2
• Chiller with heat pump or En03=1 (boiler available).
Minimum average DT to enable the action: Ch02.
Minimum time between one action and the next: Ch03.
Ch02 Temperature differential for automatic changeover (only Ch01 = 2 or Ch01 = 4).
Ch03 Minimum time between:
• successive activations/deactivations of external heating or cooling unit for Energy Saving (Ch01 = 1)
• successive automatic changeovers (Ch01 = 2, 3, 4)
Co01 Activation and logic for outlet water temperature set point compensation, chiller/hp
0 = disabled
1 = Compensation based on the sum of the differences, with sign, between the temperatures read by the e-drofan
probes and the corresponding set points (only for the master e-drofan units that are ON and without alarms, and that are
working in the same mode as the chiller/hp); the sum is divded by the sum of all the master e-drofan units that are ON and
without alarms.
2 = Compensation based on the difference, with sign, between the temperatures read by the µAM probe and its set point.
The set points on all the e-drofan units are updated every minute with the value of the µAM set point.
Range DT of action for compensation: Co02 and Co03
Range DT of action for compensation in cooling
Co02
Range DT of action for compensation in heating
Co03
Hu01 (1) Set point for automatic humidity control
Hu02 (1) Humidity differential for the automatic humidification function;
Hu02 = 40 disables the automatic humidification function.
Hu03 Humidity differential for the automatic dehumidification function;
(1)
Hu03 = 40 disables the automatic dehumidification function.
En01 µC 2 SE available
When the µC SE is not installed or is not connected to the RS485 data line, the µAM can still control the e-drofan units.
2
0=absent
1=available
Note:
• Based on the settings of Ch01, En01, En02, En03, some operating modes for the µAM, e-drofan and µC
able; see the "Summary table of operating modes" (Table 6.3)
• Setting this parameter restarts the automatic detection of the connected devices (see paragraph "Configuring the µAM - Func-
tions to be activated during installation").
• when En01=0 the OCh and ACh alarms are not displayed.
+030220460 rel. 1.0 - 08.05.2007
µAM
3
20
0
3
3
2
2
50
10
10
1
SE may not be avail-
2
29
1 20 C°
15 60 min
0 2
1 20 °C
1 20 °C
10 80 %
5 40 %
5 40 %
0 1