Siemens RVL471 - Heating Circuit Type 3 - Space Heating with District Heat; Heating Circuit Type 4 - Precontrol with Mixing Valve; Heating Circuit Type 5 - Precontrol with Boiler

18/118
Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 3 Fundamentals 23.10.2002
3.2.4 Heating circuit type 3 – space heating with district heat
B7
B71
2524S03
A6/B5
Y1
N1
2, 4 1 3 0, 5
Space heating with district heat connection, with weather-compensated flow tempera-
ture control acting on the valve in the primary return of the district heat connection.
Outside temperature signal from own sensor or data bus. With or without room influ-
ence. Heating up and setback according to the heating program.
3.2.5 Heating circuit type 4 – precontrol with mixing valve
2524S04
B7
1, 2 0, 5
Precontrol with demand-dependent control of the main flow temperature. 3-position
control acting on the mixing valve in the main flow.
Heat demand signal from data bus. No heating program.
3.2.6 Heating circuit type 5 – precontrol with boiler
2524S05
B7
1, 2, 4 0, 5
Precontrol with demand-compensated control of the boiler temperature. 2-position con-
trol acting on the burner.
Heat demand signal from data bus. No heating program.