3 Mounting and installation [specialist]]
2022/07
99E13331xx-mub-en - V08
11
Outputs:
Terminal
Individual operation
Cascade operation mode
R1
Optional: alarm relay, error relay,
reheating, stratification
Cascade valve
R2
Optional: stratification, alarm relay,
error relay, reheating
Stratification
(Connection at server 1)
R3
Primary- / secondary pump
Primary- / secondary pump
PWM1
Primary pump
Primary pump
PWM2
Secondary pump (circulation)
Secondary pump
(circulation at the client)
3.2
Establishing the electrical connections
WARNING
Risk to life and limb due to electric shock!
Make sure that the following conditions are satisfied when performing the work
described in this section:
All cables leading to the controller must be disconnected from the power
supply and it must be ensured that they cannot be unintentionally
reconnected during installation.
The protective earth conductors (PE) from the mains cable and pump
and valve cables must be connected to the protective earth conductor
terminal block.
All cables must be laid so that persons cannot stand on them or trip over
them.
The cables must satisfy the requirements listed in the
Technical data
section.
The local power supply must match the specifications on the type plate
of the controller.
The power supply cable is to be connected to the mains power as
follows:
-
using a plug connected to a wall mains socket or
-
via an isolating mechanism allowing complete isolation in the case of
permanent wiring.
The power supply cable must be laid in conformance to all applicable
legal guidelines and regulations of the local electricity supplier.