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9
ELECTRICAL INSTALLATION
9.1
General
All the wires are connected to a separate connector that is fitted in a socket. The connector can be taken out from
the sockets without loosening the wiring. The connections are placed next to the display panel and can be easily
accessed through the hatch on the front panel by loosening the screw shown on the picture:
After entering the boiler with the power supply cable(s) on the rear side of the boiler use the left conduit to extend
them to the power connections and pump relay of the boiler.
For signal cables only low voltage, use the right conduit to connect them to the connectors on the front side.
The boiler pump must be controlled by the boiler control. If, for any reason, an external pump control is
applied
without written approval of Strebel
, the complete warranty on the S-CB
+
400/550 boiler and all
supplied parts will become invalid.
•
For operation the boiler needs a power supply of at least 230 VAC / 1~ / 50 Hz and depending on the selected
pump type 400 VAC / 3~ / 50 Hz.
•
The boiler connections are not life/neutral sensitive (the boiler is not phase-sensitive).
•
The wiring to the connections can be entered at the rear of the boiler through the cable glands, the cable
conduit has to be used there is one for power supply and one for signal cables.
•
NOTICE: Before starting to work on the boiler, it must be switched off and the power supply to the boiler
must be disconnected.
•
Electrical wiring should be installed according to all applicable standards.
•
Working on the boiler should only be done by a qualified service engineer that is skilled in working on elec-
trical installations and according to all applicable standards.
