ABB i-bus KNX Product Manual page 32

5.2.3.2 Set value calculation in cooling mode
5 5 B
current set value for cooling
Operating Current set value
mode
Comfort B asic set value
H U
Basic set value + set value shift + dead zone + increase in standby
Standby
mode
Night Basic set value + set value shift + dead zone + increase in night mode
Frost/heat parameterised set value for heating protection mode
protection
Example:
Cooling in the comfort operating mode.
The room temperature is too high, RTF/A 1.1 has switched to cooling mode
Parameter page
Set values
Cooling set values
Operation
The set value has previously been reduced by 1 K using the setting wheel.
Calculation:
Current set value
Changing to standby mode means another increase in the set value (energy saving),
which produces the following set value.
Set value = basic set value + set value shift + dead zone + increase in standby mode
5.3 S et value shift
1 7 B
The c urrent set value
H U
•
incrementally using the setting wheel (see parameter page Operation,
Function of the setting wheel)
•
via object 0 Manual set value shift
+ set value shift + dead zone
U H
Parameters
Basic set value after reset
Dead zone between
heating and cooling
Increase in standby mode
(with cooling)
Max. set value shift on the
setting wheel
= Basic set value + set value shift + dead zone
= 21°C - 1K + 2K
= 22°C
= 21°C - 1K + 2K + 2K
= 24°C
can be changed in two different ways on the RTF/A 1.1.
U H
Setting
21 °C
2 K
2 K
+/- 2 K
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