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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E

HVAC Products 23.10.2002

Table of Contents

Default Chapter3
- Table of Contents3
1 Summary11
- Brief Description and Key Features11
- Type Summary11
- Equipment Combinations11
- Suitable Sensors11
- Suitable Room Units12
- Suitable Actuators12
- Communication12
- Passing on of Heat Demand Signal12
- Documentation12
2 Use13
- Types of Plant13
- Types of Houses and Buildings13
- Types of Heating Systems13
- Functions13
3 Fundamentals15
- Key Technical Features15
- Plant Types with Regard to Heating Circuit15
- Plant Types with Regard to D.h.w. Heating15
- Function Blocks15
- Plant Types16
- Selectable Combinations16
- Heating Circuit Type 1 - Space Heating with Mixing Valve17
- Heating Circuit Type 2 - Space Heating with Boiler17
- Heating Circuit Type 3 - Space Heating with District Heat18
- Heating Circuit Type 4 - Precontrol with Mixing Valve18
- Heating Circuit Type 5 - Precontrol with Boiler18
- Heating Circuit Type 6 - Precontrol with District Heat19
- Plant Type 0 - no D.h.w19
- Plant Type 1 - D.h.w. Storage Tank with Charging Pump19
- Plant Type 2 - D.h.w. Storage Tank with Mixing Valve19
- Plant Type 3 - Storage Tank with Diverting Valve20
- Plant Type 4 - Instantaneous D.h.w. Heating Via Heat Exchanger20
- Plant Type 5 - Only Electric Immersion Heater20
- Summary of Plant Types and Plant Combinations21
- Setting Levels, Function Blocks and Plant Types22
- Heating Circuit Operating Modes23
- Automatic Operation23
- Continuously REDUCED Heating23
- Continuously NORMAL Heating23
- Standby23
- Operating Modes23
- Manual Operation24
- Plant Type and Operating Mode24
- Operating State and Operational Level25
4 Acquisition of Measured Values26
- Room Temperature (A6, B5)26
- Measurement26
- Handling Faults26
- Room Model26
- Flow and Boiler Temperature (B1)26
- Handling Faults27
- Outside Temperature (B9)27
- Measurement27
- Primary Return Temperature (B7)27
- Secondary Return Temperature (B71)28
- Measurement28
- Handling Faults28
- Flow Temperature (B3)28
- Storage Tank Temperature (B31, B32)28
5 Function Block "Enduser Space Heating30
- Operating Lines30
- Setpoints30
- General30
- Frost Protection for the Building30
- Heating Program30
- Holiday Program31
6 Function Block "Enduser D.h.w32
- Operating Lines32
- Setpoint32
- Actual Value32
7 Function Block "Enduser General33
- Operating Lines33
- Switching Program 233
- Time of Day and Date33
- Indication of Errors34
8 Function Block "Plant Type35
- Operating Line35
- General35
9 Function Block "Cascade Slave36
- Operating Lines36
- Mode of Operation36
- Boiler Sequence Release Integral (KFI)36
- Boiler Sequence Reset Integral (KRI)36
10 Function Block "Space Heating37
- Operating Lines37
- ECO Function37
- Compensating Variables and Auxiliary Variables37
- Heating Limits38
- Mode of Operation38
- Operating Modes and Operating States39
- Room Temperature Source39
- Optimization39
- Definition and Purpose39
- Fundamentals39
- Process40
- Room Model Temperature40
- Optimum Stop Control41
- Quick Setback41
- Optimum Start Control42
- Boost Heating42
- Room Functions43
- Maximum Limitation of the Room Temperature43
- Room Influence43
- Heating Curve44
- Purpose44
- Basic Setting44
- Deflection45
- Parallel Displacement of Heating Curve46
- Display of Setpoints46
- Generation of Setpoint47
- Weather-Compensated Control47
- Demand-Compensated Control47
11 Function Block "3-Position Actuator Heating Circuit48
- Operating Lines48
- Limitations48
- Flow Temperature Limitations48
- Setpoint Rise49
- 3-Position Control49
- Auxiliary Variables in Interconnected Plants49
- Excess Mixing Valve or Heat Exchanger Temperature49
- Pulse Lock50
12 Function Block "Boiler51
- Operating Lines51
- Operating Mode51
- Limitations51
- Maximum Limitation of the Boiler Temperature51
- Minimum Limitation of the Boiler Temperature52
- Actions During D.h.w. Heating52
- 2-Position Control52
- Control with a Single-Stage Burner52
- Control with a 2-Stage Burner53
- Frost Protection for the Boiler54
- Protective Boiler Startup55
- Protection against Boiler Overtemperatures55
- Operating Mode of Pump M156
13 Function Block "Setpoint of Return Temperature Limitation57
- Operating Line57
- Description57
- Minimum Limitation of the Return Temperature57
- Acquisition of Measured Values57
- Mode of Operation57
- Mode of Operation with a Single Device (with no Bus)58
- Mode of Operation in Interconnected Plants58
14 Function Block "District Heat59
- Operating Lines59
- Limitations59
- Maximum Limitation of the Primary Return Temperature59
- Maximum Limitation of Return Temperature Differential (DRT Limitation)60
- Integral Action Time61
- Minimum Stroke Limitation (Suppression of Hydraulic Creep)61
- Limitation of the Volumetric Flow61
15 Function Block "Maximum Limitation of the Return Temperature, D.h.w62
- Operating Line62
- Purpose62
- Function62
16 Function Block "Basic Settings D.h.w64
- Operating Lines64
- Assignment of D.h.w. Heating64
- Program for the Circulating Pump64
- General Mode of Operation64
- Operation of Circulating Pump During the Holiday Period65
- Frost Protection for D.h.w66
- Frost Protection in the D.h.w. Storage Tank66
- Frost Protection in the D.h.w. Storage Tank Flow66
- Frost Protection for the Secondary D.h.w. Flow66
17 Function Block "Release of D.h.w. Heating67
- Operating Line67
- Release67
- Function67
- Release Programs67
- Heating During the Holiday Period68
18 Function Block "D.h.w. Priority and Flow Temperature Setpoint69
- Operating Line69
- Settings69
- Priority69
- Absolute Priority69
- Shifting Priority70
- No Priority70
- Flow Temperature Setpoint70
- Maximum Selection70
- D.h.w71
19 Function Block "D.h.w. Storage Tank72
- Operating Lines72
- Charging72
- Charging with Hot Water72
- Alternate D.h.w. Charging with Hot Water and Electricity72
- Temperature and D.h.w. Switching Differential73
- Boost of the D.h.w. Charging Temperature74
- Maximum D.h.w. Charging Time74
- Setpoint of Legionella Function74
- Forced Charging75
- Protection against Discharging75
- Purpose75
- Mode of Operation75
- Manual D.h.w. Charging76
20 Function Block "3-Position Actuator for D.h.w77
- Operating Lines77
- Function77
- Flow Temperature Boost77
- Temperature Control77
- Pulse Lock77
21 Function Block "Derivative Action Time D.h.w. Heating Via Heat Exchanger78
- Operating Line78
- Description78
22 Function Block "Multi-Functional Relay79
- Operating Lines79
- Functions79
- No Function79
- Outside Temperature Switch79
- ON / off According to the Time Switch80
- Relay Energized in the Event of Fault80
- Relay Energized During Occupancy Time80
- Relay Energized During Occupancy Time (Including Optimizations)80
- Relay Energized, if There Is Demand for Heat80
- Manually on / off80
23 Function Block "Legionella Function81
- Operating Lines81
- Periodicity of Legionella Function81
- Time of Legionella Function81
- Dwelling Time at the Legionella Setpoint81
- Circulating Pump Operation During the Legionella Function81
- Mode of Operation81
24 Function Block "Switching Program 383
- Operating Lines83
- Function83
25 Function Block "Service Functions and General Settings84
- Operating Lines84
- Display Functions84
- Flow Temperature Setpoint84
- Heating Curve85
- Hours Run Counter85
- Software Version85
- Identification Number of Room Unit86
- Radio Clock, Elapsed Time Since Last Reception86
- Commissioning Aids86
- Simulation of the Outside Temperature86
- Relay Test87
- Sensor Test87
- Test of H-Contacts88
- Auxiliary Functions88
- Frost Protection for the Plant88
- Flow Alarm89
- Manual Overriding of Operating Mode (Contact H1)90
- Pump Overrun90
- Pump Kick90
- Winter- / Summertime Changeover90
- Gain of Locking Signal91
- Entries for LPB92
- Source of Time of Day92
- Outside Temperature Source92
- Addressing the Devices93
- Bus Power Supply93
- Bus Loading Number94
- Heat Demand Output DC 094
26 Function Block "Locking Functions95
- Operating Line95
- Locking the Settings on the Software Side95
- Locking the Settings for District Heat on the Hardware Side95
27 Communication96
- Combination with Room Units96
- General96
- Combination with Room Unit QAW5096
- Combination with Room Unit QAW7096
- Combination with SYNERGYR Central Unit OZW3098
- Communication with Other Devices98
- Data Bus98
- Heat Demand Signal99
28 Handling100
- Operation100
- General100
- Analog Operating Elements101
- Digital Operating Elements102
- Setting Levels and Access Rights103
- Commissioning103
- Installation Instructions103
- Operating Lines103
- Installation104
- Mounting Location104
- Mounting Choices104
- Electrical Installation104
29 Engineering105
- Connection Terminals105
- Low-Voltage Side105
- Mains Voltage Side105
- Connection Diagrams106
- Low-Voltage Side106
- Mains Voltage Side106
30 Mechanical Design107
- Basic Design107
- Dimensions107
31 Technical Data108

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