Promatic WDC Series, Manual

Page: 44 / 176

Service setting manual 44
ENG
Para-
meter Parameter name Parameter description Setting range Default
setting
S3.8 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
S3.9 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 of mixing valve corrections.
0,4 ÷ 2,5 1
S3.10 MIXING VALVE D - CON-
STANT 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 TEMPERATURE 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 TEM-
PERATURE 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 TEMPERATURE,
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 activati-
on of mixing valve control by higher calculated stand-pipe tempe-
ratures. -10 ÷ 10 °C 0
S3.14 LIMITATION OF TEMP. DIFFE-
RENCE 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 activa-
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
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- STANDARD
2- SWITCH-
OFF
3- PROG. P1
4- PROG. P2
5- SELECTED
PROGRAM 1
S3.5
MINIMUM STAND-PIPE TEM-
PERATURE 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 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