ABB i-bus KNX Product Manual page 44

ABB i-bus KNX
© 2009 Busch-Jaeger Elektro GmbH – A Company of the ABB Group
Commissioning
Select base setpoint
Options: - Dependent setpoints
- Single setpoints
The "Select base setpoint" option defines whether the room thermostat
refers to "Dependent setpoints" or to "Single setpoints".
Dependent setpoints mean that a comfort temperature (base setpoint)
is defined and other setpoints such as temperature at standby or automatic
night setback refer to this point.
The standby temperature 2 K is set lower than the comfort temperature
(base setpoint). At a comfort temperature of 21 °C this means a standby
temperature of 19 °C. If you raise the comfort temperature to 22 °C by
manually moving the setpoint, the standby temperature is automatically
changed to 20 °C.
The setting "Single setpoints" allows you to choose a separate temperature
on the room thermostat for each setpoint; the room thermostat always refers
to this setting in the respective operating mode.
Example: the standby temperature is set permanently at 19 °C. If you
raise the comfort temperature from 21 °C to 22 °C by manually moving
the setpoint, the standby temperature does not change.
Reference base setpoint
Options: - Setpoint heating
- Setpoint cooling
- Mid skip zone
If "Dependent setpoints" were selected with "Heat and cool" controller
function and selection of base setpoint, this parameter can be used to define
whether the base setpoint refers to comfort temperature for heating, cooling
or the average temperature between "Heat and cool" (see also page 95,
Section 4.4.3 Minimum distance).
"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 room
thermostat and raise the cooling setpoint (standby temperature cooling
and automatic night setback).
This parameter is only available if the "Heat and cool" control functions are
set.
43