Regin REGIO ARDO, Руководство пользователя, Страница: 19 / 134

Control functions
fresh air demand, or based on cooling demand and fresh air demand simultaneously, see section 2.6 . The
controller regulates based on fresh air demand by using CO
2
control, see section 2.10 .
The temperature range between the heating and cooling setpoints is defined as the deadband. The controller
is in heating mode when the room temperature is lower than [heating setpoint plus half the deadband], and
in cooling mode when the room temperature is higher than [cooling setpoint minus half the deadband].
When in heating mode, the controller outputs both a heating signal, Y1, and a VAV signal, Y3, that are
configured on the controller outputs by using the values listed in
Table 2-10 .
When in cooling mode, the controller outputs a cooling signal, Y2, and a VAV signal, Y3, in sequence that
are configured on the controller outputs by using the configuration values listed in
Table 2-10 .
The Y2 and Y3 signal sequence order is configurable.
Maximum and minimum limits for the heating and cooling output signals can be set, see section 2.2 .
Maximum and minimum limits for the VAV output signal are set via the VAV control function, see section
2.6 .
Table 2-10 Controller output configuration values and controller output types.
Output signal Controller output configuration value Controller output type
Y1 Heating Analog
Heating valve, increase
Heating valve, decrease Digital
Digital
Heating valve, thermal (PWM) Digital
Y2 Cooling Analog
Cooling valve, increase
Cooling valve, decrease Digital
Digital
Cooling valve, thermal (PWM) Digital
Y1 + Y2 6-way valve Analog
6-way valve, increase
6-way valve, decrease Digital
Digital
Y3 VAV Analog
Figure 2-13 illustrates the control behaviour when the controller regulates based on heating and cooling
demand, when no maximum or minimum limits are set for the heating or cooling output signals, and when a
minimum limit is set for the VAV output signal.
The heating demand increases as the room temperature falls. When the room temperature falls below the
heating setpoint,
Y1: Heating signal increases to respond to the heating demand. At 100% heating demand,
Y1: Heating signal reaches its maximum. When the room temperature is in the range between the heating
setpoint and the deadband centre, and no heating demand exists, Y1: Heating signal is at its minimum.
The cooling demand increases as the room temperature rises. When the room temperature rises above the
cooling setpoint,
Y2: Cooling signal increases to respond to the cooling demand. At 49% cooling demand, Y2:
Cooling signal reaches its maximum. When the room temperature rises further and the cooling demand
exceeds 51%, Y3: VAV signal increases while Y2: Cooling signal stays at its maximum. At 100% cooling
demand, Y3: VAV signal reaches its maximum. When the room temperature is in the range between the
cooling setpoint and the deadband centre, and no cooling demand exists, both Y2: Cooling signal and Y3:
VAV signal are at their minimum.
Y3: VAV signal never goes below its set minimum limit.
Regio Ardo manual, Rev. D 19