User Manual

Control concept
Programming in D-MAP
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5 Control concept
Supply chain model
In building automation and control, media, such as warm water, cold water, warm air, and cold air are
generated using energy, such as oil, gas, and electricity, and distributed to consumers.
Each medium can be assigned a supply chain. The supply chain starts at the generation or handling of the
medium. The distribution system then transports the medium to one or several consumers. A supply chain
for building services systems comprises the following links:
Consumers
The consumer supplies the energy contained in the hot water medium to the room as per the requested
demand (e.g., via a radiator).
Distribution
The distribution system transports the medium from the producer to the consumer and adjusts it to the
individual requirements (minimum losses).
Production
The production consists of a boiler where hot water is treated by means of energy (e.g., heating oil, gas)
and provided to the process.
Supply chains of various media
The following illustration shows a schematic view of the supply chains for the media air, hot water, and
cold water with their respective production (treatment), distribution (e.g., heating circuit, pre-control), and
the consumers.
The supply chain for the medium electricity, which normally begins at supply or at production, if electricity
is produced on-site (e.g., cogeneration plant, photovoltaic) is also shown.