Technical Manual Switch Actuator 3-fold, FanCoil
MDT technologies GmbH
•
51766 Engelskirchen
•
Papiermühle 1
Tel.: +49-2263-
880 • Fax: +49
-2263-4588
• [email protected] • www.m
dt.de
64
The setti gs „Release ti e to auto ati
ode a d „Dead ti e at s it hi g heati g/ ooli g are
explained in chapter
Thresholds:
Figure 52: Thresholds - Delta T
shows the thresholds for the temperature difference. The
thresholds for switching up into the next step are set directly in
the parameter at the ETS-Software. At Figure 52: Thresholds -
Delta T the thresholds are set to 1K, 2K and 3,5K. The threshold
for switching into the next lower step are calculated via
threshold
–
hysteresis. Here, the hysteresis is set to 0,5K. The
Delta T value is calculate with setpoint
–
temperature at the
heating mode and with temperature
–
setpoint at the cooling
mode.
Figure 52: Thresholds - Delta T
Switchover Heating/Cooling:
At the automatic switchover via the temperature, a dead zone between heating and cooling can be
defined to avoid too much switching. The dead zone is calculated symmetric around the setpoint. A
dead zone of 2K at a setpoint of 21°C causes switching points at 20°C and 22°C:
Figure 53: Dead zone heating & cooling
Summary of Contents for AKK-03UP.02
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