CE1P2522E / 30.03.2000
Basic Documentation RVL470
Siemens Building Technologies
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Fundamentals
Landis & Staefa Division
3.2.2. Plant type 2 – "Space heating with a boiler"
B9
A6/B5
Space heating with own boiler, with weather-compensated boiler temperature control.
Two-position control through a burner.
Outside temperature signal from own outside sensor or data bus. With or without room
temperature influence. Heating-up and setback according to the heating program.
3.2.3. Plant type 3 – "Space heating with district heat"
B9
A6/B5
B7
B71
Space heating with a district heat connection, with weather-compensated flow tem-
perature control through the valve in the primary return of the district heat connection.
Outside temperature signal from own outside sensor or data bus. With or without room
temperature influence. Heating-up and setback according to the heating program.
3.2.4. Plant type 4 – "Pre-control with a mixing valve"
B7
Pre-control with demand-compensated control of the main flow temperature. Three-
position control through the mixing valve in the main flow.
Heat demand signal from the data bus. No heating program.