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Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions
[03/
2022 ]
6.4 Change over function
AUTOMATIC CHANGE OVER
The TAC controller allows for the control of reversible coil or both cooling and heating coil. The coils are
equipped with their motorised 3-way valves. The offset between the measured temperature (supply air or
extract air, to be configured) and the setpoint will determine if heating or cooling is automatically acti-
vated. When the unit is equipped with reversible coil or with both a cooling and a heating coil, only one
setpoint has to be configured: Comfort temperature. The neutral band prevents the cooling and heating
systems from counteracting each other. The neutral band is added to the comfort setpoint for the activa-
tion of the cooling function. The neutral bands has to be configured in the advanced setup.