Siemens RVD230 - Page 21

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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 3 Fundamentals 27.05.2004
A6
B9
B12
Q1
Q2
Q3
Y1
B7
B1
Y7
B31
2383S19
B71
B71
B32
B72
B3
Y5
A6 Room unit
B1 Common flow sensor
B12 Flow sensor heating circuit
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return or d.h.w. return sensor
B72 Return sensor heating circuit
B9 Outside sensor
Q1 Heating circuit pump
Q2 Circulating pump (optional)
Q3 D.h.w. intermediate circuit pump
Y1 2-port valve common return
Y5 Mixing valve d.h.w. circuit
Y7 Mixing valve heating circuit
Y1
B7
B1
Q1
A6
B9
B3
Q3
B71
2383S20
B32
Q4
B31
B12
B72
Y5
K6
A6 Room unit
B1 Common flow sensor
B12 Flow sensor heating circuit
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B72 Return sensor heating circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Q4 Storage tank charging pump
Y1 2-port valve common return
Y5 Mixing valve heating circuit
Y1
B7
B1
Q1
A6
B9
B3
Q3
Y5
B71
2383S21
B32
B71
Q2
B31
B12
B72
Y7
Q
b)
a)
A6 Room unit
B1 Common flow sensor
B12 Flow sensor heating circuit
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return or d.h.w. return sensor
B72 Return sensor heating circuit
B9 Outside sensor
Q Circulating pump (controlled externally, optional)
Q1 Heating circuit pump
Q2 Storage tank charging pump
Q3 D.h.w. intermediate circuit pump
Y1 2-port valve common return
Y5 Mixing valve d.h.w. circuit
Y7 Mixing valve heating circuit
Y1
B7 B71
B1
Q1
B9
2383S23
B1 Sensor precontrolled secondary flow
B7 Sensor precontrolled primary return *
B71 Secondary return sensor
B9 Outside sensor (optional, display only)
Q1 System pump
Y1 2-port valve precontrolled primary return
B1
Y1
Y5
B7
Q1
B9
2383S24
B32
B3
H5B72
Q3
B71
B1 Sensor precontrolled secondary flow
B3 D.h.w. flow sensor
B32 Secondary return sensor d.h.w.
B7 Sensor precontrolled primary return *
B71 Sensor precontrolled secondary return
B72 Primary return sensor d.h.w.
B9 Outside sensor (optional, display only)
H5 Flow switch (optional)
Q1 System pump
Q3 Circulating pump (optional)
Y1 2-port valve precontrolled primary return
Y5 2-port valve d.h.w. circuit primary return
a) Circulating pump feeding water into the heat exchanger’s return
b) Circulating pump feeding water into the storage tank
* Suppression of hydraulic creep