34
Service settings manual
Para-
meter
Function
Parameter description
Setting
range
Default value
S2.4 PUMP
OPERATION
MODE
Setting of pump operation mode. Settings have the following
meaning:
1 - STAND. (circulation pump of mixing circuit - regular)
2 - P1 (operation according to time program P1= OFF)
3 - P2 (operation according to time program P2= OFF)
4 - P3 (operation according to time program P3= OFF)
5 - P4 (operation according to time program P4= OFF)
6 - SEL. PROG. (operation according to selected time program)
1 - STAND.
2- P1=OFF
3- P2=OFF
4- P3=OFF
5- P4=OFF
6 - SEL.
PROG.
1
S2.5 MINIMUM
STAND-PIPE
TEMPERATURE
Setting of minimum stand-pipe temperature limitation.
10 ÷ 90 °C
20
S2.6 MAXIMUM
STAND-PIPE
TEMPERATURE
Setting of maximum stand-pipe temperature limitation.
20 ÷ 150 °C
45 -
floor
85 -
radiator
S2.7 DEAD ZONE OF MIXING
VALVE CONTROL
Setting of stand-pipe temperature span in which mixing valve
control is in stand-by.
0,4 ÷ 3,0 K
1
S2.8 MIXING VALVE P - CON-
STANT
Setting of mixing valve position correction intensity. Smaller
value means shorter movements, higher value means longer
movements,
0,5 ÷ 2,0
1
S2.9 MIXING
VALVE
I - CONSTANT
Setting of mixing valve control frequency - how often mixing
valve position is being controlled. Smaller value means low
frequency, higher value means higher frequency.
0,4 ÷ 2,5
1
S2.10 MIXING
VALVE
D - CONSTANT
Sensitivity of mixing valve for stand-pipe temperature changes.
Smaller value means low sensitivity, higher value means high
sensitivity.
0,4 ÷ 2,5
1
S2.11 MINIMUM
STAND-PIPE
TEMPERATURE FOR
COOLING
Setting of minimum stand-pipe temperature in cooling mode.
CAUTION! Too low stand-pipe temperature can cause dewing
of heating bodies and pipelines.
10 ÷ 20 °C
15
S2.12 HEATING-OFF
TEMPE-
RATURE SHIFT
Shift of calculated stand-pipe temperature for heating switch-off. -10 ÷ 10 K
0
S2.13 LIMITATION
OF
TEMP.
DIFFERENCE BETWEEN
STAND AND RETURN
PIPE
Setting of maximal difference between stand-pipe and return-
pipe temperature. Limiting the highest power of heating
system .
3 ÷ 30 K
10
S2.14 CONSTANT
STAND-PIPE
TEMPERATURE
Selection of operation with constant stand-pipe temperature.
Setting range is 10 ÷ 140 °C.
This function deactivates weather compensated control of
mixing valve.
0 - NO
1 - YES
0
S2.15 CIRCULATION
PUMP
SWITCH-OFF DELAY
(MINUTES)
Setting of delayed circulation pump switch-off when there is no
requirement for heating.
0 ÷ 10 min
5
S2.3 INFLUENCE OF DD2+
ROOM SENSOR
Set whether the room unit influences the controller operation.
# 1 only the sensor from the first room unit has influence
# 2 only the sensor from the second room unit has influence
# 1 & 2 sensor from the both room units have influence
AUTO sensors from the room unit which controll the heating
circuit have influence
1- AUTO
2- #1
3- #2
4- #1&2
5- NO
1
