Seltron ACD20, Instruction Manual

Page: 36 / 52

36 | Instructions for settings
EN SERVICE S PARAMETERS
Para-
meter
Parameter name Parameter description Setting
range
Default value
S2.16
Boiler circulation
pump - switch off
differential T2-T1
(°C)
This setting determines the
differential between the
sensors T2 and T1, under which
the circulation pump of the
boiler is switched off.
2.0 ÷ 8.0 °C 3.0 °C
S2.19 Initial valve
movement from
open position
(seconds)
Setting of initial valve movement
duration when moving from
open position. With this setting
the valve is moved to its control
range and immediate controller
respond at startup of system.
0 ÷ 30
seconds
20 s
S2.20 Initial valve
movement from
closed position
(seconds)
Setting of initial valve movement
duration when moving from
closed position. With this setting
the valve is moved to its control
range and immediate controller
respond at startup of system.
0 ÷ 30
seconds
20 s
Para-
meter
Parameter name Parameter description Setting
range
Default value
S3.1 Protection of the
heating system -
sensor T2
The protection mode according
to the sensor T2 is set.
- None: The controller does not
take into account the sensor T2.
- Tmin: Only minimum tempera-
ture is taken into account
(parameter S3.2).
- Tmax: Only maximum
temperature is taken into
account (parameter S3.3).
- Tmin and Tmax: Minimum and
maximum temperatures are
taken into account (parameters
S3.2 and S3.3).
- None
- Tmin
- Tmax
- Tmin and
Tmax
None
S3 - SERVICE SETTINGS FOR ENERGY SOURCE