17 Installation of the cascade controller
2021/03 99E13331xx-mub-en - V07 45
Cascade valve (at the left)
3-way valve (at the right)
Brown - L (via duo wire end ferrule) Brown - L (via duo wire end ferrule)
Black – L (R1) White – L (R2)
Blue – N (R1) Blue – N (R2)
The circulation pump must be electrically connected to the client. Both pumps
(primary pump and circulation pump) must be connected to the relay 3 by means of
the duo wire end ferrules.
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