External Demand Processing - Samson TROVIS 5573 Mounting And Operating Instructions

the minimum delivery rate. Following the lag time, the charging pump is finally deactivated
when the storage is fully charged.
Functions
Speed control of the
charging pump
AA1 reverse

8.11 External demand processing

The controller can process binary or analog requests for an externally required signal by a
more complex secondary system. A binary request can only be processed when the input
SF2/RF2 is not assigned to a sensor.
NOTICE
!
Risk of damage of the heating circuit through overheating.
Overheating may occur in the heating circuits of the primary controller without control valve.
Excessive charging temperatures in DHW circuits without control valve controlled by the pri-
mary controller are excluded when the default settings of the controller are used: while stor-
age tank charging is active, no flow temperature higher than the charging temperature is
used by the primary controller. Nevertheless, if the Priority for external demand function is
activated, the external demand is also processed during storage tank charging.
Functions
Priority for external demand
Binary demand processing
Regardless of the operating mode set for control circuit HC1, except for manual mode, the
controller regulates the flow temperature when either the binary input (terminals 03/12) is a
make contact (BI = 0) or a break contact (BI = 1) in control circuit HC1 to at least the adjust-
ed flow temperature adjusted in 'Set point for binary demand processing'.
Functions
Demand processing in HC1
EB 5573 EN
WE Configuration
0 CO1 > F21 - 1 or CO4 > F21 - 1
40.0 °C Start speed reduction - SF2 limit: 5.0 to 90.0 °C
50.0 °C Stop speed reduction - SF2 limit: 5.0 to 90.0 °C
20 % Min. speed signal: 0 to 50 %
0 CO5´ > F01 - 1
0 % Zero: 0 to 50 %
WE
0
WE
0
Configuration
CO4 > F16 - 1
Configuration
CO1 > F15 - 1
System-wide functions
93