The water temperature is acquired and the operating state is updated accordingly.
The setting range is 5 °C...P060-2 K for P059 and P059+2 K… 40 °C for P060.
When P001 = 2 (H/C changeover auto) is selected, an NTC 3k or LG-Ni1000 cable
temperature sensor for automatic heating/cooling changeover or one external
switch for manual or remote changeover can be used to switch the equipment
between heating and cooling:
Normally open:
Contact open ⇨ Heating mode
Contact closed ⇨ cooling mode
The sensor or switch can be connected to input terminal X2, X1 or U1
(RDG2..KN)/X3 (RDG2..T) based on the commissioning of the inputs (P150 (X1),
P153 (X2), P155 (U1/X3) = 2).
See also Multifunctional input, digital input [➙ 115].
When using an external switch for changeover, the operating action is configured
via P150, P153 or P155 = 2.
P151 (X1), P154 (X2) or P156 (U1/X3)
= 0 (default, normally open)
P151 (X1), P154 (X2) or P156 (U1/X3)
= 1 (Normally close)
Contact open ⇨ heating mode
Contact open ⇨ cooling mode
Contact closed ⇨ cooling mode
Contact closed ⇨ heating mode
● Manual heating/cooling changeover means selection via changeover button on
the thermostat by repeatedly pushing the button until the required mode is
displayed.
● If manual heating/cooling changeover is commissioned (P001 = 3),
heating/cooling mode cannot be changed via bus/changeover sensor/switch; it
remains in the last mode selected locally via button.
The thermostat acquires the room temperature via built-in sensor, external room
temperature sensor (QAA32), or external return air temperature sensor (NTC 3k or
LG-Ni1000) connected to multifunctional input X1, X2 or U1/X3.
Inputs X1, X2 or U1/X3 must be commissioned accordingly. See Multifunctional
input, digital input [➙ 115].
4.6.2 Presence detector
The operating mode can be changed to Comfort or Economy mode based on room
occupancy (room occupied or unoccupied, via presence detector or keycard).
The presence detector input switches the operating mode to Comfort when the
room is occupied and switches back to the previous operating mode when the
room is unoccupied.
Changeover switch
(P150, P153, P155)
Manual heating/cooling
changeover (P001)
External/return air
temperature sensor
(P150, P153, P155)
Standard presence
mode (Input: P150 / P153
/ P155 = 10)
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