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Siemens Building Technologies Heating and D.h.w. Controller RVL481 CE1P2541en

HVAC Products Index 20.05.2008

Table of Contents

Default Chapter3
- Table of Contents3
1 Summary11
- Brief Description and Key Features11
- Equipment Combinations11
- Suitable Sensors11
- Suitable Room Units12
- Suitable Actuators12
- Communication12
- Passing on of Heat Demand Signal12
- Product 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 Plant Types17
- Plant Types19
- Setting Levels, Function Blocks and Plant Types21
- Heating Circuit Operating Modes22
- Automatic Operation22
- Continuously REDUCED Heating22
- Continuously NORMAL Heating22
- Protection Mode22
- Operating Mode22
- Manual Operation23
- Plant Type and Operating Mode23
- Operating State and Operational Level24
4 Acquisition of Measured Values25
- Room Temperature (A6, B5)25
- Measurement25
- Handling Faults25
- Room Model25
- Flow and Boiler Temperature (B1)25
- Handling Faults26
- Outside Temperature (B9)26
- Measurement26
- Primary Return Temperature (B7)26
- Handling Faults27
- Secondary Return Temperature (B71)27
- Measurement27
- Flow Temperature (B3)27
- Storage Tank Temperature (B31, B32)27
- Handling Faults28
- Collector Temperature (B6)28
- Measurement28
5 Function Block "Enduser Space Heating29
- Operating Lines29
- Setpoints29
- General29
- Frost Protection for the Building29
- Heating Program29
- Holiday Program30
6 Function Block "Enduser D.h.w31
- Operating Lines31
- Setpoint31
- Actual Value31
7 Function Block "Enduser General32
- Operating Lines32
- Switching Program 232
- Time of Day and Date32
- Indication of Errors33
8 Function Block "Plant Type34
- Operating Line34
- General34
9 Function Block "Cascade Slave35
- Operating Lines35
- Mode of Operation35
- Boiler Sequence Release Integral (KFI)35
- Boiler Sequence Reset Integral (KRI)35
10 Function Block "Space Heating36
- Operating Lines36
- ECO Function36
- Compensating Variables and Auxiliary Variables36
- Heating Limits37
- Mode of Operation37
- Operating Modes and Operating States38
- Room Temperature Source38
- Optimization38
- Definition and Purpose38
- Fundamentals38
- Process39
- Room Model Temperature39
- Optimum Stop Control40
- Quick Setback40
- Optimum Start Control41
- Boost Heating41
- Room Functions42
- Maximum Limitation of the Room Temperature42
- Room Influence43
- Heating Curve43
- Purpose43
- Basic Setting43
- Deflection44
- Parallel Displacement of Heating Curve45
- Display of Setpoints45
- Generation of Setpoint46
- Weather-Compensated Control46
- Demand-Compensated Control46
11 Function Block "3-Position Actuator Heating Circuit47
- Operating Lines47
- Limitations47
- Flow Temperature Limitations47
- Setpoint Rise48
- 3-Position Control48
- Excess Mixing Valve or Heat Exchanger Temperature49
- Pulse Lock49
12 Function Block "Boiler50
- Operating Lines50
- Operating Mode50
- Limitations50
- Maximum Limitation of the Boiler Temperature50
- Minimum Limitation of the Boiler Temperature51
- Actions During D.h.w. Heating51
- 2-Position Control51
- Control with a Single-Stage Burner51
- Control with a 2-Stage Burner52
- Frost Protection for the Boiler53
- Protective Boiler Startup54
- Protection against Boiler Overtemperatures55
- Operating Mode of Pump M155
13 Function Block "Setpoint of Return Temperature Limitation56
- Operating Line56
- Description56
- Minimum Limitation of the Return Temperature56
- Acquisition of Measured Values56
- Mode of Operation56
- Mode of Operation with a Single Device (with no Bus)57
- Mode of Operation in Interconnected Plants57
14 Function Block "District Heat58
- Operating Lines58
- Limitations58
- Maximum Limitation of the Primary Return Temperature58
- Maximum Limitation of Return Temperature Differential (DRT Limitation)59
- Integral Action Time60
- Minimum Stroke Limitation (Suppression of Hydraulic Creep)60
- Flow Limitation60
15 Function Block "Maximum Limitation of the Return Temperature, D.h61
- Operating Line61
- Purpose61
- Function61
16 Function Block "Basic Settings D.h.w62
- Operating Lines62
- Assignment of D.h.w. Heating62
- Program for the Circulating Pump62
- General Mode of Operation62
- Operation of Circulating Pump During the Holiday Period63
- Frost Protection for D.h.w64
- Frost Protection in the D.h.w. Storage Tank64
- Frost Protection in the D.h.w. Storage Tank Flow64
- Frost Protection for the Secondary D.h.w. Flow64
17 Function Block "Release of D.h.w. Heating65
- Operating Line65
- Release65
- Function65
- Release Programs66
- Heating During the Holiday Period66
18 Function Block "D.h.w. Priority and Flow Temperature Setpoint67
- Operating Line67
- Settings67
- Priority67
- Absolute Priority67
- Shifting Priority68
- No Priority68
- Flow Temperature Setpoint68
- Flow Setpoint According to Maximum Selection68
- Flow Setpoint According to D.h.w68
19 Function Block "D.h.w. Storage Tank70
- Operating Lines70
- Charging70
- Charging with Hot Water70
- Alternate D.h.w. Charging with Hot Water and Electricity70
- Temperature and D.h.w. Switching Differential71
- Boost of the D.h.w. Charging Temperature72
- Maximum D.h.w. Charging Time72
- Setpoint of Legionella Function72
- Forced Charging73
- Protection against Discharging73
- Purpose73
- Mode of Operation73
- Manual D.h.w. Charging74
20 Function Block "3-Position Actuator for D.h.w75
- Operating Lines75
- Function75
- Flow Temperature Boost75
- Temperature Control75
- Pulse Lock75
21 Function Block "Derivative Action Time D.h.w. Heating Via Heat Exchanger"76
- Operating Line76
- Description76
22 Function Block "Multi-Functional Relay77
- Operating Lines77
- Functions77
- No Function77
- Outside Temperature Switch77
- ON / off According to the Time Switch78
- Relay Energized in the Event of Fault78
- Relay Energized During Occupancy Time78
- Relay Energized During Occupancy Time (Including Optimizations)78
- Relay Energized, if There Is Demand for Heat78
- Manually on / off78
23 Function Block "Legionella Function79
- Operating Lines79
- Periodicity of Legionella Function79
- Time of Legionella Function79
- Dwelling Time at the Legionella Setpoint79
- Circulating Pump Operation During the Legionella Function79
- Mode of Operation80
24 Function Block "Switching Program 381
- Operating Lines81
- Function81
25 Function Block "Service Functions and General Settings82
- Operating Lines82
- Display Functions82
- Flow Temperature Setpoint82
- Heating Curve83
- Hours Run Counter83
- Software Version84
- Identification Number of Room Unit84
- Commissioning Aids84
- Simulation of the Outside Temperature84
- Relay Test84
- Sensor Test85
- Test of H-Contacts86
- Auxiliary Functions86
- Frost Protection for the Plant86
- Flow Alarm86
- Manual Overriding of Operating Mode (Contact H1)87
- Pump Overrun87
- Pump Kick88
- Winter- / Summertime Changeover88
- Gain of Locking Signal88
- Entries for LPB89
- Source of Time of Day89
- Outside Temperature Source90
- Addressing the Devices90
- Bus Power Supply91
- Bus Loading Number91
- Heat Demand Output DC 091
26 Function Block "D.h.w. Solar Charging92
- Operating Lines92
- Functions92
- Temperature Differential ON/OFF Solar92
- Minimum Charging Temperature93
- Minimum Runtime94
- Collector Frost Protection Temperature94
- Collector Temperature to Protect against Overheating95
- Storage Tank Recooling95
- Evaporation Temperature of Heat Carrier96
- Maximum Limitation of Charging Temperature97
- Storage Tank Temperature Maximum Limitation97
- Collector Start Function Gradient98
27 Function Block "Locking Functions99
- Operating Line99
- Locking the Settings on the Software Side99
- Locking the Settings for District Heat on the Hardware Side99
28 Communication100
- Combination with Room Units100
- General100
- Combination with Room Unit QAW50100
- Combination with Room Unit QAW70101
- Combination with SYNERGYR Central Unit OZW30103
- Communication with Other Devices103
29 Handling104
- Operation104
- General104
- Analog Operating Elements105
- Digital Operating Elements105
- Setting Levels and Access Rights106
- Commissioning107
- Installation Instructions107
- Operating Lines107
- Installation107
- Mounting Location107
- Mounting Choices107
- Electrical Installation108
30 Engineering109
- Connection Terminals109
- Low-Voltage Side109
- Mains Voltage Side109
- Connection Diagrams110
31 Mechanical Design111
- Basic Design111
- Dimensions111
32 Technical Data112

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