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Siemens Basic Documentation RVP340, RVP350, RVP351 CE1P2545en
Building Technologies 9 Function block: Space heating 15.03.2011
The heating is switched on again only when the 3 following conditions are satisfied:
The current outside temperature has fallen 1 °C below the current ECO heating
limit
The composite outside temperature has fallen 1 °C below the current ECO heat-
ing limit
The attenuated outside temperature has fallen 1 °C below the "ECO day" heat-
ing limit
The action of the automatic ECO function depends on the operating mode:
Operating mode or
operating state
Automatic
ECO function
Current heating limit
Automatic operation Active ECO day or ECO night
Continuously REDUCED
heating
Active ECO night
Continuously NORMAL
heating
Inactive –
Protection/holiday mode Active ECO night
Manual control Inactive
9.3 Room temperature source
The outside temperature source can be selected via operating line 65.
The following settings can be made:
Op. line 65 Room temperature source
0 No room sensor
1 Room unit connected to terminal A6
2 Room sensor connected to terminal B5
3 Mean value of the devices connected to terminals
A6 and B5
A Automatic selection
In addition, the room temperature source used by the controller is shown on
operating line 65 and appears as a number on the right side of the LCD:
0 = controller operates without sensor
1 = controller operates with room unit connected to terminal A6
2 = controller operates with room unit connected to terminal B5
3 = controller operates with mean value of the devices connected to A6 and B5
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.
Switching the
heating on
Operating modes and
operating states
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