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Siemens Building Technologies Basic Dokumentation RVA63.280, RVA53.280 CE1P2374E
Landis & Staefa Division 19.04.2001
2.27.1 Examples of room unit assignments
In the case of plants with two heating circuits and one room unit, it may be advisable to
choose a separate assignment of the room unit functions. The listing below shows
some typical applications with the respective settings of the room unit operating mode
(line 103) and the room unit values (line 104).
The heating circuits are in separate, independent flats or apartments. This represents
the "normal application ".
Plant types Location of heating circuits Line 103 Line 104
21/22/23/24
Not in the same space
00
The heating circuits are located in partly separate spaces or flats.
Plant types Location of heating circuits Line 103 Line 104
21/22/23/24
Not in the same space
20
• The heating circuits are always separate.
Plant types Location of heating circuits Line 103 Line 104
21/22/23/24
Not in the same space
00
• Simultaneous change of the operating mode is possible, however.
Plant types Location of heating circuits Line 103 Line 104
21/22/23/24
Not in the same space
20
The heating circuits are located in the same space. Comfort control is provided by the
faster-reacting radiators. This means that the room unit values shall only act on heating
circuit 2.
Plant types Location of heating circuits Line 103 Line 104
21/22/23/24 In the same space 2 1
Introduction
Separate flat
Bathroom heating
Staircase heating
Underfloor or radiator
heating system
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