17 Installation of the cascade controller
44 99E13331xx-mub-en - V07 2021/03
1. Remove the white front panel of the controller.
2. Remove the strain reliefs.
3. Remove the sensor cables of the VFS/US sensors, of the PWM signal and the temperature
sensors from the controller circuit board plug connector.
4. Unscrew the two screws to remove the intermediate level.
5. Remove the strain relief on the 230 V level. Now, connect the cascade valve to the output
relay 1. If also a three-way valve for the improved stratification control in the storage tank
(return stratification) must be connected, use the output relay 2 of the server 1. Use a duo
wire end ferrule (twin wire end ferrule) for the crimping if two wires are meant to be mounted
below one screw terminal. Please note that the polarity is established as shown in the
following illustration.
To Next Page
Loading...
