45
Service setting manual
ENG
Param-
eter
Parameter name
Parameter description
Setting
range
Default
setting
S3.4
PUMP OPERATION
MODE
Setting of pump operation mode. Settings have the follow-
ing meaning:
1- STAND. (circulation pump of mixing circuit - regular)
2- pump switches off, if requested room temperature is
reached (only direct circuit)
3- operation according to time program P1
4- operation according to time program P2
5- SEL. PROG. (operation according to selected time
program)
1- STAND-
ARD
2- SWITCH-
OFF
3- PROG.
P1
4- PROG.
P2
5- SE-
LECTED
PROGRAM
1
S3.5
MINIMUM STAND-PIPE
TEMPERATURE
Setting of minimum stand-pipe temperature limitation, when
heating is active.
10 ÷ 90 °C
20
S3.6
MAXIMUM STAND-PIPE
TEMPERATURE
Setting of maximum stand-pipe temperature limitation.
20 ÷ 150 °C
45- floor
85- radiat.
S3.7
STILL STAND OF MIX-
ING VALVE CONTROL
Setting of stand-pipe temperature deviation by which the mix-
ing valve control is in stand-by.
1,0 ÷ 3,0 °C
1
S3.8
MIXING VALVE P -
CONSTANT
Setting of mixing valve position correction intensity. Smaller
value means shorter movements, higher value means longer
mixing valve movements.
0,5 ÷ 2,0
1
S3.9
MIXING VALVE I - CON-
STANT
Setting of mixing valve control frequency - how often mixing
valve position is being controlled. Smaller value means low
frequency, higher value means higher frequency of mixing
valve corrections.
0,4 ÷ 2,5
1
S3.10
MIXING VALVE D -
CONSTANT
Sensitivity of mixing valve for stand-pipe temperature changes.
Smaller value means low sensitivity, higher value means high
sensitivity.
0,0 ÷ 2,5
1
S3.11
MAX. FLOOR TEM-
PERATURE
Setting of maximum floor temperature limitation by floor
heating.
Setting is active only if floor sensor is installed and parameter
S1.5=2.
10 ÷ 50 °C
25
S3.12
MINIMUM STAND-PIPE
TEMPERATURE IN
COOLING MODE
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
S3.13
SHIFT OF TEMPERA-
TURE, REQUIRED TO
ACTIVATE STAND-PIPE
CONTROL
Shift of calculated min. stand-pipe temperature by which the
mixing valve control will activate.
Negative values mean activation of mixing valve control by
lower calculated stan-pipe temperatures, positive values mean
activation of mixing valve control by higher calculated stand-
pipe temperatures.
-10 ÷ 10 °C
0
S3.14
LIMITATION OF
TEMP. DIFFERENCE
BETWEEN STAND AND
RETURN PIPE
Setting of maximal difference between stand-pipe and return-
pipe temperature. This way the highest power of heating
system is limited.
Limitation of difference between stand and return pipe is
activated with parameter S1.5=3.
3 ÷ 30 °C
10
S3.15
CONSTANT STAND-
PIPE TEMPERATURE
Selection of operation with constant stand-pipe temperature.
Setting range is 10 ÷ 140 °C.
CAUTION: This function deactivates weather compensated
control of mixing valve.
0- NO
1- YES
0
S3.16
CIRCULATION PUMP
SWITCH-OFF DELAY
Setting of circulation pump switch-off delay when there is no
requirement for heating.
0 ÷ 10 min
5
