22 Functions in the cascade network
2022/07
99E13331xx-mub-en - V08
59
There is always only one circulation pump within the entire cascade. If this function is activated,
it only appears on the client display. The client display is shown as in the display view in
chapter 17.1.
Identically to the single controller, the circulation function provides 3 different operating modes,
which can be combined with each other.
•
Temperature control
•
Time control
•
Demand
Circulation sensor
T-cold water-cascade
External sensor
The special characteristic of the temperature control at
the cascade is the selection of a new sensor which is
called
T cold water cascade
.
T cold water cascade
is the highest temperature of the
T-CW sensors of all active modules / domestic hot
water modules. Alternatively, an
External sensor
can
be selected.
If an external sensor is selected, the sensor must be connected to the client. For a FriwaMini
Cascade, you can select
Sensor 2
and
Sensor 3
. For a FriwaMidi / FriwaMaxi or FriwaMega
Cascade, the
External sensor
must be connected to the input
Sensor 3
and activated in the
menu item
Circulation sensor
.
22.2
Stratification return
NOTICE
The settings for the stratification can only be made and monitored via the client in the cascade
network.
The three-way valve and the external sensor, which is meant to be used for the function, must
be electrically connected to the controller of server 1.
For the selection of the stratification, the relay 2 of server 1 is already preset and cannot be
modified.