User manual

46
Service setting manual
ENG
Para-
meter
Parameter name Parameter description Setting
range
Default
setting
S2.3 INFLUENCE OF DD2+
ROOM SENSOR



circuit (coding switch on room unit S.2=OFF). It can be set on


room unit S.4=OFF)

on room unit S.4=ON)

1- AUTO


4- 1. & 2.

5- NO
1
S2.4 PUMP OPERATION
MODE
Setting of pump operation mode. Settings have the following
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- STAN-
DARD
2- SWITCH-
OFF
3- PROG.
P1
4- PROG.
P2
5- SE-
LECTED
PROGRAM
1
S2.5 MINIMUM STAND-PIPE
TEMPERATURE
Setting of minimum stand-pipe temperature limitation, when
heating is active.
10 ÷ 90 °C
20
S2.6 MAXIMUM STAND-PIPE
TEMPERATURE
Setting of maximum stand-pipe temperature limitation. 20 ÷ 150
°C

85- radiat.
S2.7 STILL STAND OF MIXING
VALVE CONTROL
Setting of stand-pipe temperature deviation by which the
mixing valve control is in stand-by.
0,2 ÷ 3,0
°C
0,6
S2.8 MIXING VALVE P - CON-
STANT
Setting of mixing valve position correction intensity. Smaller
value means shorter movements, higher value means longer
mixing valve movements.
0,5 ÷ 2,0
1
S2.9 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
S2.10 MIXING VALVE D - CON-
STANT
Sensitivity of mixing valve for stand-pipe temperature chan-
ges. Smaller value means low sensitivity, higher value means
high sensitivity.
0,0 ÷ 2,5
1
S2.11 MAX. FLOOR TEMPE-
RATURE

heating.

S1.4=2 (for sensor T1) or S1.5=5 (for sensor T8).
10 ÷ 50 °C
25
S2.12 MINIMUM STAND-PIPE
TEMPERATURE IN COO-
LING 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
S2.13 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