User manual

47
Service setting manual
ENG
Para-
meter
Parameter name Parameter description Setting
range
Default
setting
S2.14 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 S1.4=3 (for sensor T1) or S1.5=6
(for sensor T8).
3 ÷ 30 °C
10
S2.15 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
S2.16 CIRCULATION PUMP
SWITCH-OFF DELAY
Setting of circulation pump switch-off delay when there is no
requirement for heating.
0 ÷ 10 min
5

Para-
meter
Parameter name Parameter description Setting
range
Default
setting
S3.1 INFLUENCE OF ROOM
TEMPERAT. DEVIATION


0,0 ÷ 3,0
1
S3.2 INFLUENCE OF ROOM
SENSOR T8

circuit.


connected

connected


This setting has affect only if S1.5=1.
1- AUTO
2- YES
3- NO
1
S3.3 INFLUENCE OF DD2+
ROOM SENSOR




second or both room units.

room unit S.4=OFF)

room unit S.4=ON)

1- AUTO


4- 1. & 2.

5- NO
1
S3.4 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
S3.5 MINIMUM STAND-PIPE
TEMPERATURE
Setting of minimum stand-pipe temperature limitation, when
heating is active.
10 ÷ 90 °C
20