Storage Cylinder Loading; Error Relay; Parallel Relay; Function Block (1 Or 2) - oventrop Regumaq X-45 Operating Instructions Manual

Regumaq X-45
Operation

8.9.2 Storage cylinder loading

2 modes are available for reheating (backup heating):
In fixed value mode, the flow setpoint temperature is
compared with a storage cylinder reference sensor. If the
measured temperature at the assigned sensor falls below
the entered switch-on temperature, the output is switched
on. The output is switched off again when the measured
temperature has risen above the switch-off temperature. If
the sensor is defective, the fixed value loading is cancelled
or suppressed.
In zone loading mode, a specific storage cylinder section
between 2 sensors is continuously loaded. For this
purpose, 2 sensors are used to monitor the switch-on and
switch-off conditions. The switch-on and switch-off
temperatures apply as reference parameters. If the
temperature measured at the assigned upper storage
cylinder sensor falls below the entered switch-on
temperature, the output is switched on. The output is
switched off again when the temperature at the assigned
lower storage cylinder sensor has risen above the switch-
off temperature. If one of the two sensors is defective, the
zone loading is cancelled or suppressed.
8.9.3

Error relay

The "Error relay" function is used to switch an output in
the event of an error. For example, a signal transmitter can
be connected to report error cases.
If the function is activated, the assigned output switches if
there is an error.

8.9.4 Parallel relay

The "Parallel relay" function is used to always switch a
selected output together with one or more selected
reference relays.
In AND mode, all selected reference relays must be active
for the assigned output to switch. In OR mode, only one of
the selected reference relays must be active for the
assigned output to switch.
If the option "Inverted" is activated, the output reacts
exactly the other way round.
8.9.5

Function block (1 or 2)

In addition to the predefined additional functions, function
blocks are available that consist of thermostat, timer and
difference functions. They can be used to realise further
components or functions.
Sensors and free outputs can be assigned for the function
blocks. Already used sensors can be used without
influencing their control function.
138114082-V04.04.2022
8.9.5.1 Thermostat function
When the set switch-on temperature is reached, the
switching condition for the thermostat function is
considered fulfilled.
When the set switch-off temperature is reached, the
switching condition for the thermostat function is no
longer considered fulfilled.
8.9.5.2 Assignment of the reference sensor
Set maximum temperature limit with switch-off
temperature > switch-on temperature,
set minimum temperature limit with switch-on
temperature > switch-off temperature.
The temperatures cannot be equated.
8.9.5.3 rT function
When the set switch-on temperature difference (rT on) is
reached, the switching condition for the rT function is
considered fulfilled.
When the set switch-off temperature difference (rT off)
is reached, the switching condition for the rT function is
no longer considered fulfilled.

8.9.6 Thermal disinfection

This function is used to limit the formation of legionella in
the hot water and circulation pipes on the secondary side
of the heat exchanger. For disinfection, the temperature is
monitored at the assigned sensor (S3).
While disinfection is active, the current temperature at the
assigned sensor and the remaining time for disinfection
appear in the display.
Disinfection is considered complete when the temperature
measured at the sensor continuously exceeds the set
disinfection temperature for the disinfection duration. The
function is started with the "Start" parameter and can be
cancelled manually with the "Cancel" parameter.
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