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ST-81 v 81.035
General Diagram - the diagram does not replace the design of a CH system. It is intended for the
demonstration of the controller's expansion possibility. The presented diagram of the heating system
does not contain elements cutting-off and protecting for the execution of professional installation.
Location of the Thermal Overload Relay and the Boiler's Sensor:
The thermal overload relay is a bimetallic sensor located next to the boiler's temperature sensor in
the capillary or on the pipe feeding the CH circulation as close to the boiler as possible.
Installation in the boiler's capillary.
Installation on the feed of CH circulation.
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