Application manual
Air quality multisensor and regulator EK-ES2-TP
Release 1.0 - Updated: 14/02/2020
Application Manual
© EKINEX S.p.A. - All rights reserved
Page 86
Heating mode
: when the measured temperature is lower than the value of the difference (T
set
– ΔT
hysteresis
),
whereby ΔT
hysteresis
identifies the differential adjustment of the boilers, the device activates the heating system
by sending a message or KNX telegram to the actuator that handles the heating system; when the measured
temperature reaches the desired temperature (
Setpoint
), the device disables the heating system by sending
another message. In this way, there are two decision thresholds for activation and deactivation of the heating,
the first being the level (T
set
– ΔT
hysteresis
) below which the device activates the system, whereas the second is
the desired temperature above which which the heating system is deactivated.
Cooling mode:
When the measured temperature is higher than the value of the difference (T
set
+ ΔT
hysteresis
),
whereby ΔT
hysteresis
identifies the differential adjustment of the cooler, the device activates the air conditioning
system by sending a message or KNX telegram to the actuator that handles it; when the measured temperature
falls below the desired temperature T
set
the device turns off the air conditioning system by sending another
message. In this way, there are two decision thresholds for activation and deactivation of the cooling: the first
being the level (T
set
+ ΔT
hysteresis
) above which the device activates the system, whereas the second is the
desired temperature below which which the air conditioning system is deactivated. In the ETS application
program, two different parameters are available for the hysteresis value for heating and cooling: the values
usually differ depending on the system type and its inertia.
In those applications where floor or ceiling radiant panels are present, it is possible to realize a different 2-point
room temperature control. Ths type of control must be paired either to a proper regulation system for flow
temperature that takes into account all internal conditions or an optimizer that exploits the thermal capacity of
the building to adjust the energy contributions (Picture 13). In this type of control the hysteresis (ΔT
hysteresis
) o
the room temperature high limit (T
set
+ ΔT
hysteresis
) represent the maximum level of deviation that the user is
willing to accept during plant conduction.
Picture 13 - Two-points control with hysteresis and flow temperature
Heating mode
– When the measured temperature is lower than the desired temperature T
set
, the device
activates the heating system by sending a message or KNX telegram to the actuator that handles it; when the
measured temperature reaches the value (T
set
+ ΔT
hysteresis
), whereby ΔT
hysteresis
identifies the differential
adjustment of the boilers the device disables the heating system by sending another message. In this way,
there are two decision thresholds for activation and deactivation of the heating, the first being the desired
temperature T
set
below which the device activates the system, whereas the second is the value (T
set
+
ΔT
hysteresis
), above which which the heating system is deactivated.
Cooling mode
– When the measured temperature is higher than the desired temperature T
set
, the device
activates the air conditioning system by sending a message or KNX telegram to the actuator that handles it;
when the measured temperature reaches the value (T
set
- ΔT
hysteresis
), whereby ΔT
hysteresis
identifies the
T ambient
OFF
ON
Tset
hysteresis
T ambient
OFF
ON
Tset
Thysteresis