User Manual

Remarks of Siemens

This section outlines how Siemens interprets the functions and processing functions according

to EN 15232-1:2017.

1) The Plants required for "emission control" of thermal energy, such as fan coils, chilled ceilings or

VAV systems may have different supply media (e.g. water, air). As a result, different BAC

solutions may be possible for a processing function.

2) The Siemens interpretation gives full consideration to the processing function in the function list of

EN 15232:

· It includes thermostatic valves and electronic control equipment.

· Non-communicating electronic control equipment may include a local scheduler.

But experience suggests that they are often not correctly set.

· Thermostatic valves are not used for "cooling control".

3) Communication between a superposed centralized unit and electronic individual room controllers

allows for centralized schedulers, monitoring of individual room controllers as well as centralized

operation and monitoring.

4) Demand control (by use) = demand control based on occupancy information from a presence

detector or a presence button with automatic reset after a set period. Control switches from Pre-

Comfort to Comfort or the other way around using this occupancy information (see EN 15500).

Note:

· Air quality control is considered in "Ventilation and air conditioning control".

· Occupancy information can influence "heating control", "cooling control" and "ventilation and

air conditioning control".