Data Sheet for Product

8/12
Siemens Building Technologies Heat-pump controller for wall mounting ACR12.481 CE1N3577en
HVAC Products 27.05.2004
Nbr. Designation Values Entry
P01 Normal Operating Mode (1)
Comfort
Economy
1
0
P02 Reduced Operating Mode (2)
Frost Protection
Economy
1
0
P03 Idle position of contact at input DU1
Normally closed
Normally open
1
0
P04
Place of heating system
(only applicable if P09 = P10 = 1)
Outside heat pump
Inside heat pump
1
0
P05 P-band heating
2 k
4 K
1
0
P06 P-band cooling
2 k
4 K
1
0
P07 Controlling algorithm
PI
P
1
0
P08
Ventilation in neural zone of normal mode
OFF
ON
1
0
P09 Type of heat pump
Cooling only
Reversing valve
1
0
(3)
P10 Electric heater or change over (3)
EH Yes or C/O Auto
EH No or C/O Manual
1
0
P11 Set-point heating comfort 16°C…26°C
21
P12 Set-point cooling comfort 18°C…28°C
23
P13 Maximum offset for set-points 0K…6K
6
P14 Correction of temp. measurement -10K…+10K
0
P15 Units of temperature display
°C
°F
1
0
In the table above the factory settings are underlined and in bold print (1
).
(1) The operating mode can be changed with the
button on the controller,
by means of a window contact, occupancy detector or otherwise (terminals
DU1-GND). Input DU1-GND has a higher priority than the
button.
(2) In case the controller is in the reduced operating mode, any operation carried out
on the front of the controller changes the mode immediately to the normal operat-
ing mode. Note that the set-point offset is not active in the reduced operating
mode.
(3) P9=1, P10=1, Compressor for cooling only, heating with electric heater
P9=1, P10=0, Compressor for cooling only, no heating possible
P9=0, P10=1, Reversing valve, change-over automatically
P9=0, P10=0, Reversing valve, change-over manually