20 Submenu Cascade at the client
2022/07 99E13331xx-mub-en - V08 55
20 Submenu Cascade at the client
The main setting options were already described in the chapters 7-17. The menu item "Modbus
Gateway MB3.10" is described in detail in chapter 23 "Connection to Building Management
System" (see 23.2 "Cascade"). The submenu
Cascade
is only visible at the client and contains
the following setting parameters:
20.1 Cascade switchover points
If a withdrawal flow rate falls under or over the determined threshold, an additional domestic hot
water module is switched off or on via the cascade valve.
CASCADE SWITCHOVER POINTS
SWITCH ON (80%) 44.8 L/MIN
SWITCH OFF (30%) 16.8 L/MIN
This menu is an overview for the minimum withdrawal
flow rate when the respective domestic hot water module
/ cascade module is switched on or off. You can navigate
through the 4 modules with the
upwards
and
downwards
buttons.
Maximum flow: indicates the maximum withdrawal flow rate for the number of modules, see
example: 56.0 l/min for 2 active modules.
Switch on (80%): this marks the threshold for the minimum flow rate when the next module is
switched on. In the example, the third module would switch on at a minimum flow rate of
44.8 l/min and the cascade valve would open.
Switch off (30%): this marks the threshold for the minimum flow rate when the corresponding
module is switched off. In the example, the second module switches off if the flow rate falls
below 16.8 l/min.
20.2 Switchover point ON*
Here you can define the threshold for the minimum flow rate when the next module is switched
on and the cascade valve opens. The percentage refers to the maximum flow rate of the active
modules. Please note the automatic connection of the switchover points ON and OFF,
a modification can impact the control performance.
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