Seltron SGC36, Manual

Page: 35 / 144

Service settings manual
35
HEAT METERING PARAMETERS
The procedure for setting function parameters is the same as for service
parameters (see page 30).
Group W contains parameters to set the solar heat metering.
Para-
meter Function Parameter description Setting range Default
value
S3.15 ACTUATOR RUNNING TIME Actuator running time, needed for a 90° turn. This data is
considered at delayed switchovers with valves.
1 ÷ 8 min 2
S3.16 BOILER CIRCULATION
PUMP - OPERATION MODE This setting defines how boiler circulation pump shall operate:
1- STANDARD means that circulation pump is running ac-
cording to setted minimum boiler temperature and according
to temperature difference between return pipe and boiler
temperature.
2- ALWAYS means that circulation pump is running always
when boiler temperature is higher as setted minimum boiler
temperature. Such operation mode is used for systems of
pellet boiler without sensor in storage tank. 1- STANDARD
2- ALWAYS 1
S3.17 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
S3.18 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. 0,4 ÷ 2,5 1
S3.19 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
S3.20 BACKLASH OF MIXING
VALVE Setting of mixing valve running time to compensate the bac-
klash of actuator and mixing valve assembly, which occours
by change of rotation direction. 0 ÷ 5 s 1