Maintaining The Heat Exchanger At A Constant Temperature - Samson TROVIS 5757-3 Configuration Manual

Functions and parameters

2.3 Maintaining the heat exchanger at a constant temperature

When the DHW tapping recognition is active, the actuator controls the hot water to the set
point temperature only when hot water is demanded. To guarantee that the temperature
reaches the set point W1 quickly when hot water is demanded again, the heat exchanger is
prevented from cooling down by the function to maintain the heat exchanger at a constant
temperature: the hot water is kept at a temperature reduced by the set-back difference.
Depending on the configuration, the reduced set point applies after hot water has been
tapped until the next demand or while the heating period to maintain heat exchanger at con-
stant temperature (P12) is active.
NOTICE
!
Upon power supply failure, an active function is canceled. After the power supply is recon-
nected, hot water must be tapped to reactivate the function.
Functions
F01: DHW tapping recognition
F09: Maintain heat exchanger at constant
temperature
Parameters
P11: Set-back difference
P12: Heating period to maintain heat ex-
changer at constant temperature
Influence of the binary input BI1
If the binary input BI1 is not required for set point switchover, it is used to deactivate the func-
tion to maintain the heat exchanger at a constant temperature.
− BI1 open: function to maintain heat exchanger at a constant temperature according to
configuration of F09.
− BI1 closed: function inactive
When the binary input BI1 is closed, an active function to maintain the heat exchanger at
a constant temperature is immediately terminated, even when the Heating period to
maintain heat exchanger at constant temperature has not yet elapsed.
8
WE Configuration
1 F01 - 1
0 F09 - 0: Time adjustable (P12)
F09 - 1: Continuous
WE Value range
8 K 0 to 30 K
24.0 h 0 to 25.5 h
KH 5757 EN