Optimization; Definition And Purpose; Basics; Optimization With Room Sensor - Siemens RVP360 Basic Documentation

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Building Technologies
9.4

Optimization

9.4.1

Definition and purpose

Operation of the heating system is optimized. EN 12 098 defines optimization as
automatic shifting of the switch-on and switch-off points aimed at saving energy.
This means that ...
switching on and heating up as well as switching off are controlled such that
during building occupancy times the required room temperature level is always
ensured,
the smallest possible amount of heating energy is used to achieve this objective.
9.4.2

Basics

It is possible to select or set ...
the type of optimization; either with a room sensor/room unit or according to the
room model,
the maximum heating up time,
maximum early shutdown,
quick setback (yes or no).
For optimization, the controller considers either the current room temperature –
acquired by a room sensor or room unit – or the room model.
9.4.3

Optimization with room sensor

When using a room sensor/room unit, it is possible to have both optimized switch-
ing on and optimized switching off.
To be able to optimally determine the switch-on and switch-off points, optimization
needs to "know" the building's heating up and cooling down characteristics, always
as a function of the prevailing outside temperature. For this purpose, optimization
constantly acquires the room temperature and the prevailing outside temperature.
It captures these variables via the room sensor and the outside sensor and contin-
ually adjusts the forward shift of the switching points. This way, optimization can al-
so detect changes made to the house or building and take them into consideration.
The learning process always concentrates on the first heating phase per day.
9.4.4

Optimization without room sensor

Without room sensor, only optimized switching on is possible.
Optimization operates with fixed values (no learning process), based on the set
maximum heating up time and the room model.
Basic Documentation RVP360
9 Function block: Space heating
CE1P2546en
2017-07-24