Dependent Setpoints - ABB 2CSYK1201C Product Manual

MYLOS Building Automation
®
7.4.1

Dependent setpoints

Dependent setpoints have two base setpoints, one for heating ("heating setpoint comfort mode") and one for cooling
("cooling setpoint comfort mode").
Cooling
setpoint
Heating
setpoint
The settings "...reduction standby/night mode" and "... reduction standby/night mode" refer to the base setpoint.
This means that, for example, if "heating setpoint comfort mode" is set to 21 °C and 2 K has been set for "heating
setpoint reduction standby", the heating setpoint is reduced 2 K to 19 °C in standby mode. If 4 K is specified for
"heating setpoint reduction night mode", the heating setpoint in night mode is 17 °C.
The dependence of the setpoints is retained even after a manual setpoint adjustment. For example, if the user
manually adjusts the setpoint of the specified temperature "heating setpoint comfort mode" up by 1 K to 22 °C, this
value is reduced 2 K to 20 °C when standby mode is activated.
In night mode the value is reduced by 4 K, making the setpoint 18 °C.
The user can manually change the parametrised setpoints with the two push-switches "increase temperature" and
"reduce temperature". The two setpoints for heating and cooling can be changed as much as desired over the bus,
even without the ETS. A 2-byte temperature value must be sent to the communication object "base setpoint - control".
The value is saved as "heating setpoint comfort mode" or "cooling setpoint comfort mode" depending on whether
heating or cooling is currently enabled. The received values are written to the device memory and are retained even
after a bus power failure and restoration. New base setpoints can also be sent to the device in the event of changes
in room usage, such as by visualisation. A new parametrisation is not required.
The base setpoint reference is taken into account with a manual adjustment and dependent setpoints. This specifies
whether the base setpoint refers to the comfort temperature for heating, cooling or the mid-range temperature
between heat and cool.
"Setpoint heating" is the default setting. In regions where the cooling function is more important, it is recommended
that you change this parameter to "Setpoint cooling". This makes it easier to set the ambient temperature controller
and raise the cooling setpoints (standby temperature cooling and automatic night setback).
Comfort Standby
operation operation
The controller cools when the
measuring value > cooling setpoint
Cooling setpoint
Standby
Comfort operation
heating
and cooling increase
Dead zone
The controller issues no requirement
between
(control value = 0)
heating and cooling
Standby
heating
Setpoint riscaldamento
decrease
Funzion. Comfort
The controller heats
when the measuring value
< heating setpoint
Dependent setpoints in the different operating
modes when heating and cooling are active.
Planning and use
Night Frost/Heat
operation Protection operation
Heat protection setpoint
Night
heating
and cooling increase
Night
heating
decrease
Frost protection setpoint
MYLOS Building Automation | Planning and use 73
®