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Siemens RVA47.320 User Manual
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Siemens RVA47.320 User Manual

Cascade controller for modulating gas-fired boilers
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RVA47.320
Cascade Controller for modulating gas-fired Boilers
Basic Documentation
Ausgabe 2.2
Controller series B
Siemens Building Technologies
CE1P2379E
HVAC Products
15.07.2002

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Summary of Contents for Siemens RVA47.320

  • Page 1 RVA47.320 Cascade Controller for modulating gas-fired Boilers Basic Documentation Ausgabe 2.2 Controller series B Siemens Building Technologies CE1P2379E HVAC Products 15.07.2002...
  • Page 2 2/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products 15.07.2002...

  • Page 3: Table Of Contents

    Reduced room temperature setpoint ............. 43 3.13 Frost protection setpoint of the room temperature ........44 3.14 Summer / winter changeover temperature of the heating circuit ....44 3.15 Heating curve slope..................46 3/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Contents 15.07.2002...
  • Page 4 Minimum limitation of the flow temperature setpoint........78 4.31 Maximum limitation of the flow temperature setpoint........79 4.32 Type of building construction .................80 4.33 Adaption of the heating curve ................81 4/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Contents 15.07.2002...
  • Page 5 Operating action of the contact connected to H1 ........111 Description of the OEM settings ..............112 Heat generation values....................112 Minimum limitation of the boiler temperature setpoint OEM (TKmin )..112 5/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Contents 15.07.2002...
  • Page 6 6.9.1 For the boiler....................143 6.9.2 For the d.h.w....................143 Application examples ...................144 Plant types RVA47.320 - no. 27..............145 Plant types RVA47.320 - no. 28..............146 Plant types RVA47.320 - no. 29..............147 Plant types RVA47.320 - no. 30..............148 6/166 Siemens Building Technologies Basic Documentation RVA47.320...
  • Page 7 Plant types RVA47.320 - no. 31 ..............149 Plant types RVA47.320 - no. 32 ..............150 Plant types RVA47.320 - no. 33 ..............151 Plant types RVA47.320 - no. 34 ..............152 Plant types RVA47.320 - no. 35 ..............153 7.10...

  • Page 8: Summary

    Summary Brief description ALBATROS™- RVA47.320 (B-series) is designed for use as a single-boiler controller or cascade controller with up to 12 heat sources. It is designed for integration in heat generating equipment / plants with • a modulating gas burner •...

  • Page 9: Features

    Cascading with up to 12 modulating heat sources controlled by one controller in combination with BMUs via LPB • Cascading with up to 15 modulating heat sources and additional RVA47.320 (from B-series) via PPS • Control of mixed cascades (modulating or multistage) with up to 12 heat sources in combination with RVA43.222 (from C-series) with BMUs via LPB...
  • Page 10 Error messages (own faults, faults of LPB devices, faults of PPS devices) • Logging Logging the individual BMU operating hours • Logging the number of device operating hours 10/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Summary 15.07.2002...

  • Page 11: Range Of Products

    RVA66.540 Heating circuit or primary controller CE1P2378E* Burner controls LMU5/6x Siemens BMUs for heating circuit and d.h.w. control ..... Different types of non-Siemens burner controls for d.h.w. control (e.g. MCBA) OCI42 Communication interface RVA-LMU5/6x RMCI Communication interface RVA-MCBA QAA10 Digital room sensor...

  • Page 12: Field Of Use

    RVA47.320 (from B-series) • Mixed cascades with up to 16 modulating and multistage heat sources with additional RVA47.320 (from B-series) and RVA43.222 (from C-series) Product liability • The products may only be used in building services plant and applications as described above •...

  • Page 13: Handling

    • Plug the connectors into the respective sockets at the rear of the controller Note: The connectors are coded to make certain they cannot be mixed up. 2379Z11 13/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 14 Note: Tighten the screws only slightly . When tightening the screws, the fixing levers automatically assume their correct positions. 2379Z14 2379Z14 14/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 15: Required Cut-Out

    30° and there must be a clearance of at least 10 mm on all sides of the unit. This allows the controller to emit the heat generated during operation. 15/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 16: Electrical Installation

    This means that sensor and mains cables may not be run in the same duct 2.2.2 Wiring When using prefabricated cables with connectors, the electrical installation is very straightforward, owing to the coding. Connection terminals 2379A01 Rear of controller 16/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 17 Heating circuit or system pump: Phase Q1 / Q3 Not used Not used Not used Not used Not used Live AC 230 V (mains connection) AGP3S.02D (black) Neutral conductor (mains connection) 17/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 18: Commissioning

    Display a) The pointer below the symbol indicates the output activated b) The number indicates the current test step c) The framed number indicates the selected setting line 18/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 19 LCD displays "ooo”. Display a) The framed number indicates the selected setting line b) Displayed value of the temperature measured c) The number indicates the selected test step 19/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 20: Parameter Settings For The Enduser

    Contin. leave the programming level "Enduser”. display Note: If no button is pressed for about 8 minutes, the controller will automatically return to the operating mode selected last. 20/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 21: Overview Of Enduser Parameters

    10 min - -:- - Service Indication of BMU error code 1...4 / 0...255 1...4 = BMU number, 1...255 = error code 0..255 / 00.01–14.16 indication of faults 21/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 22: Parameter Settings For The Heating Engineer

    Note: If no button is pressed for about 8 minutes, the controller will automatically return to the operating mode selected last. 22/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 23: Overview Of Heating Engineer Parameters

    --- / 00.1...16.3 01.1 0...990 Remaining number of operating hours for changeover of boiler sequence Only if a value is selected on line 130, otherwise the LCD displays - - 23/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 24 According to release of d.h.w. heating Assignment of d.h.w. heating 0...2 For local consumer only For all consumers in the same segment For all consumers in the system 24/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 25 Changeover of operating mode (HC standby / d.h.w. off) Changeover of operating mode (HC standby) Minimum setpoint of flow temperature (setting on line 171) Heat generation lock Heat demand DC 0...10 V 25/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 26 0 / 1 N.C. contact N.O. If a BMU is connected via LPB, this setting will not be active. The respective setting must be made directly on the BMU. 26/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 27: Parameter Settings For The Oem

    Example Whether correct or incorrect, each push of a button represents irrevocably a digit of the code. As a confirmation, the respective digit changes to 1. 27/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 28: Overview Of Oem Parameters

    0...Pmax Upper limit of output range (Pmax) Pmin...100 Mandatory time on basic stage when boilers are added 10...1200 Minimum temperature differential at the pressureless 0...20 K (°C) header 28/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...
  • Page 29 0...500000 If a BMU is connected via LPB, this setting will not be active. The respective setting is to be made directly on the BMU. 29/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 30: Operation

    When the ECO function is active, the current level pointer flashes. Display during normal control mode or when making settings Programming line when making settings. Time bar for normal control mode or when making settings. 30/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 31: Operational Faults

    Refer to section "Indication of errors" for a list of the possible error codes and their descriptions. 31/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Handling 15.07.2002...

  • Page 32: Description Of The Enduser Settings

    24-hour heating limit inactive (ECO functions) • Standby Heating OFF • Temperature according to frost protection • Protective functions active • Changeover on room unit inactive 32/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 33: Operating Mode Of D.h.w. Heating

    D.h.w. heating can be switched on and off independent of the other operating modes. Setting D.h.w. heating is selected by pressing the respective button on the controller's user interface. 33/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 34: Nominal Room Temperature Setpoint

    When the nominal room temperature setpoint is active, the rooms will be heated setting according to the adjustment made with the setpoint knob. Effect in the various operating modes: 34/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 35: Manual Operation

    When deactivating the function, the controller will automatically return to the operating mode previously selected. Effect As soon as manual operation is selected, all relays will switch to the following statuses: 35/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...
  • Page 36 ON (uncontrolled) pump: D.h.w. charging pump ON (uncontrolled) TKmax = maximum limitation of BMU setpoint (operating line 2 Display Common flow temperature (cascade flow temperature): 36/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 37: Setting The Clock

    The time of day will be set to the selected weekday. This setting is important to make certain the controller’s heating program will operate correctly. Weekday table Monday Friday Tuesday Saturday Wednesday Sunday Thursday 37/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 38: Date (Day, Month)

    The year of the controller will be based on this setting. This setting of year is important to make certain the controller’s holiday program and summer- / wintertime changeover will operate correctly. 38/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 39: Time Switch Program For Space Heating

    Entry of the switching times from operating line 6 to 11 is identical for every day from Monday through Sunday. Example: 2373Z11 24 h Switching time for nominal setpoint Switching time for reduced setpoint 39/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 40: Switching Times

    At the times entered, the program will switch to the respective temperature setpoints. The table below shows at what times the setpoints will be activated. 40/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings...
  • Page 41 When using a QAA70 room unit, the heating program will be acted upon. However, this works only if operating mode “AUTO” is selected on the controller. 41/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings...

  • Page 42: D.h.w. Values

    In the event of a sensor with a short-circuit (display ”- - -” in input test, test step 1) the d.h.w. will not be heated (protection against scalding). 42/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings...

  • Page 43: Heating Circuit Values

    Example 2373Z11 24 h The heating periods are in accordance with the settings made on lines 6 to 11. 43/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 44: Frost Protection Setpoint Of The Room Temperature

    • Additional savings function Description The summer / winter changeover temperature is the criterion for automatic summer / winter changeover of the heating plant. 44/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...
  • Page 45 SoWi -1 °C Changeover between summer and winter operation: TAged Attenuated outside temperature SoWi Summer / winter changeover temperature Temperature Time in days Heating 45/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 46: Heating Curve Slope

    The steeper the slope of the heating curve, the higher the flow temperature setpoint at low outside temperatures. Note Comfort is considerably enhanced when using a room temperature sensor. 46/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...
  • Page 47 27,5 22,5 °C 17,5 12,5 °C Flow temperature Composite outside temperature 47/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 48: Actual Values

    0 0 0 Sensor with short-circuit For resetting the attenuated outside temperature to the actual room temperature, refer Note to page " Attenuated outside temperature". 48/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 49: Maintenance

    Period 2 OFF – – : – – Period 3 ON – – : – – Period 3 OFF – – : – – 49/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 50: Time Switch Program For D.h.w. Heating

    This is the setting of the switching times for d.h.w. time switch program at which the d.h.w. temperature setpoint will change. The time switch program thus set is activated by pressing the d.h.w. operating mode button 50/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...
  • Page 51 Reduced setpoint Switch-on time period 3 – – : – – Nominal setpoint Switch-off time period 3 – – : – – Reduced setpoint 51/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 52: Service

    • Fault tracing is made easier. Description For each BMU, the RVA47.320 can log and store one fault status signal with the associated BMU number and error code. The faults are indicated on this operating line. Setting 1. Press the operating line selection buttons to select operating line 49.

  • Page 53: Indication Of Faults

    No BMU connected General BMU fault Note In the case of error code 150, operating line 49 also gives the manufacturer-specific error code of the BMU. 53/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...
  • Page 54 Display Example of a display after an error has occurred: “Er” indicates that a fault has occurred. Additional faults can be displayed by pressing 54/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the enduser settings 15.07.2002...

  • Page 55: Description Of The Heating Engineer Settings

    The test sequence is arranged in the form of a ring counter. This means it can be run through either forward or backward by pressing the + / - buttons. 55/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings...

  • Page 56: Display Of Plant Type

    - Selection of pump connected to output Q1 (operating line 95) - Adjustment of heating curve (operating line 17) (- - : - or value between 2.5 and 40) 56/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...
  • Page 57 Control Pump H1 Control x means that the setting has no influence on the generation of the type of plant. 57/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 58: Displaying The Pps Communication

    Assignment of all the other peripheral devices to the PPS addresses can be made randomly. Since every controller has a specific and confined PPS address space, the same PPS addresses can be assigned to each device. 58/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...
  • Page 59 • When the LCD displays no PPS address and no identification code, there is no communication or it is faulty • Incompatible devices are also displayed, but produce error code 145 (operating line 59/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 60: Actual Values

    Cascade flow In a cascaded system, a common cascade flow temperature sensor (B10) is used for temperature sensor all heat sources. The cascade temperature sensor (B10) is connected directly to the RVA47.320. 60/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E...

  • Page 61: Actual Value Of The Cascade Return Temperature

    The value of this sensor is used for optimizing the controller’s functionality. In particular, it permits the detection of wrong mass flows (primary / secondary mass flow). The cascade return temperature sensor is connected directly to the RVA47.320. 61/166 Siemens Building Technologies Basic Documentation RVA47.320...
  • Page 62 97. Special displays – – – Sensor with open-circuit, no sensor connected, or sensor incorrectly defined 0 0 0 Sensor with short-circuit 62/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 63: Actual Value Of Buffer Storage Tank Temperature

    Special displays – – – Sensor with open-circuit or no sensor connected 0 0 0 Sensor with short-circuit 63/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 64: Attenuated Outside Temperature

    The attenuated outside temperature acts indirectly, via the composite outside temperature, on flow temperature control. TAakt Example °C TAged 18:00 06:00 18:00 06:00 18:00 TAakt Actual outside temperature TAged Attenuated outside temperature 64/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 65: Composite Outside Temperature

    Actual outside temperature TAged Attenuated outside temperature TAgem1 Composite outside temperature for light building structures TAgem0 Composite outside temperature for heavy building structures 65/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 66: Setpoints

    No setpoint is displayed (---), when • there is no heat demand from the consumers • no BMU is connected to the controller 66/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 67: Setpoint Of The Cascade Flow Temperature

    Unit 0...140 °C The setpoint can only be displayed, but not changed. Generation of setpoint The value displayed depends on the following parameters: 67/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 68: Nominal Room Temperature Setpoint

    (± 3 °C) controller's nominal room temperature setpoint In that case, the controller's setpoint knob is inactive. 68/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 69: Room Temperature Setpoint

    No heating circuit available • ECO function active (summer / winter changeover, automatic 24-hour heating limit) • Quick setback active • Room temperature limitation active 69/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 70: Heat Generation Values

    The device address 1 (01.1) defines the cascade master (controller). Device subaddress Up to four BMUs can be connected to the first RVA47.320 (B-series) of a cascade, and up to three BMUs to each of the additional RVA47.320 (B-series). The possible device subaddresses are therefore 1.1 ... 1.4, 2.1 ... 2.3, 3.1 ... 3.3 through 16.3 One cascade can contain a maximum of 16 boilers, however.

  • Page 71: Remaining Number Of Operating Hours For Changeover Of Boiler Sequence

    The device address 1 (01.1) defines the cascade master (controller). Device subaddress Up to four BMUs can be connected to the first RVA47.320 (B-series) of a cascade, and up to three BMUs to each of the additional RVA47.320 (B-series). The possible device subaddresses are therefore 1.1 ... 1.4, 2.1 ... 2.3, 3.1 ... 3.3 through 16.3 One cascade can contain a maximum of 16 boilers, however.

  • Page 72: Burner Operating Hours Bmu 1 - 4

    Minimum limitation of the boiler temperature setpoint (setting on line 01 Tkmax Maximum limitation of the boiler temperature setpoint (setting on line 02 °C 72/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 73: Nominal Output Of Bmu 1 - 4

    Running time strategy 1 - 3: Additional boilers are switched on or off earlier or later, depending on the capcities of the individual boilers in sequence. 73/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 74: Configuration Of Plant

    If, with the first controller, sensor input B70/B4 is defined for use with a return temperature sensor (B70), for instance, it can be defined with another controller of the 74/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings...
  • Page 75 The changeover valve must be connected in parallel to the pump of the first BMU. This valve BMU must be excluded from automatic changeover of the boiler sequence (refer to operating line 131). 75/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 76: Heating Circuit Values

    More accurate room temperature control due to temperature checkback signal from the space • Use of heat gains • Possibility of boost heating and quick setback 76/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 77: Switching Differential Of The Room Temperature

    The switching differential for two-position control will be changed. Entry: - - . - Switching differential is inactive • The pump always remains activated 77/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 78: Minimum Limitation Of The Flow Temperature Setpoint

    • Benefit Prevents too low flow temperatures Description Minimum and maximum limitation define the range within which the flow temperature setpoint may vary. 78/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 79: Maximum Limitation Of The Flow Temperature Setpoint

    2. Press the + / - buttons to set the maximum limitation of the flow temperature setpoint. Setting range Unit Factory setting TVmin...95 °C Tvmin Minimum limitation of flow temperature setpoint (setting on operating line 103) 79/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 80: Type Of Building Construction

    • Building construction Heavy building structures: Buildings with thick walls or with external insulation • Light building structures: Buildings with a light envelope 80/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 81: Adaption Of The Heating Curve

    Within this temperature range, the readjustment of the parallel displacement is weighted with the factor f1 and adaption sensitivity 1 (line 36 81/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 82: Maximum Forward Shift Of Optimum Start Control

    Maximum forward shift is a limit function that defines the range of optimum start control. Setting Setting range Unit Factory setting 00:00...06:00 hh:mm 00:00 00:00 Optimum start control switched off Effect 00:10...06:00 Optimum start control switched on 82/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 83: Optimum Start Control

    - 0.25 K. The correct switch-on time is determined by adaption. 83/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 84: Maximum Forward Shift Of Optimum Stop Control

    10 minutes. If the 0.25 K are not reached, the switch-off point is shifted forward by 10 minutes (earlier shutdown). In the other case, the switch-off point is shifted backward by 10 minutes (later shutdown). 84/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 85: D.h.w. Values

    Release of d.h.w. heating can be matched to the plant's load curve Description Makes it possible to limit the period of time during which d.h.w. heating at the nominal setpoint is released. 85/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 86: 24-Hour Operation - Setting 0

    24 hours per day According to the heating circuit time switch program)s) with forward shift According to the d.h.w. time switch program of the RVA47.320 Note The frost protection temperature for d.h.w. is fixed at 5 °C and is always active.

  • Page 87: Operation According To The D.h.w. Time Switch Program - Setting 2

    For the switching program of the circulating pump, the switching program of the controller internal heating circuit will be adopted. Switching program according to the selected d.h.w. release (operating line 121). 87/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 88: Assignment Of D.h.w. Heating

    Effect Depending on the selection made, the d.h.w. will be heated for the following consumers: For the local consumer only (RVA47.320) For all consumers (controllers) in the same segment For all consumers (controllers) in the LPB system In the case of d.h.w. heating according to the heating circuit time switch program (operating line 121, setting 1), the time switch programs are used from the appropriate range for the release of d.h.w.

  • Page 89: Once Per Day With A Forward Shift Of 2.5 Hours Setting 0

    Control thermostat: the switching status of the control thermostat connected to terminal B3 is used for the control of the d.h.w. temperature. 89/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 90: Boost Of The Flow Temperature Setpoint For D.h.w

    Benefit Efficient d.h.w. heating Description To allow the d.h.w. to be heated up, the boiler temperature must be higher than the d.h.w. setpoint. 90/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 91: D.h.w. Priority

    No priority: D.h.w. heating and space heating at the same time. 91/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 92: Shifting Priority

    This means that when the undershoot is significant, the setpoint reduction will be greater. 92/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings...
  • Page 93 Start of d.h.w. heating Boiler temperature TKw Boiler temperature setpoint Actual value of the boiler temperature SDK Boiler’s switching differential (factory setting 8K) Time Locking signal 93/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 94: Demand For Heat With Reduced D.h.w. Setpoint

    Outside the main occupancy hours, the d.h.w. temperature is raised to the level of the reduced setpoint. This is accomplished by sensing a heat demand signal to the heat source (individual boiler or cascade). 94/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 95: Cascade Settings

    BMU 3 BMU 4 lead boiler t [h] Total number of operating hours of all lead boilers [h] Total output of cascade [kW] 95/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 96: Exemption From Automatic Changeover Of The Boiler Sequence

    (line 130). Note The boiler sequence is to be determined on operating lines ”Device address” (line 140) and ”Segment address” (line 141). 96/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 97: Lead Boiler With A Fixed Changeover Of The Boiler Sequence

    This setting has an effect only if function "Changeover of boiler sequence in cascades" (operating line 130) is set to ”---” = fixed switching on / off sequence. 97/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings...

  • Page 98: Switch-On Delay Lag Boilers

    The BMU will be released again only after the adjusted period of time has elapsed. This prevents frequent cycling of the BMUs and ensures that plant conditions will be more stable. 98/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 99: Lpb / System

    For more detailed information about the addressing of devices in a system, refer to ”Local Process Bus (LPB), Basic Documentation, System Engineering” (document no. CE1P2370E). 99/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 100: Lpb Segment Address

    Bus power supply The bus system (LPB) can be powered either via the individual controller bus power supplies or via a central bus power supply. 100/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 101: Displaying The Lpb Power Supply

    The status of the BUS communication will automatically be displayed on this line. Display Communication active The controller communicates with another controller via the LPB. Communication inactive 101/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 102: Range Of Action Of Central Changeover

    Setting 1 (central effect) is active only if the controller has been defined as a master controller (setting on line 140 = 1). 102/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 103: Central Standby Switch

    The setting will change the effect of the system time on the controller's time setting (settings on operating lines 1 to 2). Entry: 103/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 104: Winter- / Summertime Changeover

    For that purpose, the time of day is shifted forward by one hour. Setting Setting range Unit Factory setting 01.01...31.12. tt.MM 25.03. 104/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 105: Summer- / Wintertime Changeover

    For that purpose, the time of day is shifted backward by one hour. Setting Setting range Unit Factory setting 01.01...31.12. tt.MM 25.10. 105/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 106: Input H1

    Exception D.h.w. cannot be boosted by another heat requisition. Important The relay contacts must be suited for use with extra low voltage (gold-plated). 106/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 107: Changeover Of Operating Mode (Remote Telephone Switch) - Setting 0 / 1

    With setting 0 as selected above (d.h.w. heating locked), the two buttons will flash. With setting 1 as selected above (d.h.w. heating remains released), only operating mode button will flash. 107/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 108: Minimum Setpoint Of Flow Temperature Contact H1

    All heat demand signals from the heating circuits connected to LPB and from the d.h.w. storage tank connected to the RVA47.320 will be ignored while frost protection for the boiler will remain ensured. However, a local d.h.w. storage tank connected directly to the BMU can still trigger d.h.w.

  • Page 109: Demand For Heat - Setting 4

    External consumers can transmit a demand for heat in the form of an analog signal of DC 0...10 V. The RVA47.320 converts this voltage signal to a temperature setpoint of 0...130 °C and considers this value when generating the setpoint of the cascade.

  • Page 110: Minimum Setpoint Of Flow Temperature Contact H1

    Otherwise, the required output will be provided through modulation of the burner. °C TVHw °C TVHw Minimum setpoint of the flow temperature, contact H1 TKw Boiler temperature setpoint 110/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 111: Maximum Value Of Heat Demand Signal Dc 0

    Note If input H1 is used for a heat demand signal (line 170, setting 4), this setting will have no effect. 111/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the heating engineer settings 15.07.2002...

  • Page 112: Description Of The Oem Settings

    In manual operation, the value set is used directly as the flow temperature setpoint. The boilers controlled by the BMUs are operated at this temperature. 112/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings...

  • Page 113: Pump Overrun Time

    The minimum boiler return temperature can be adjusted • The effect on the consumers can be adjusted Description The setting defines the permitted minimum boiler return temperature. 113/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 114: Calibration Of Actual Output Range Of Bmu 1-4

    On the ACS69, the value is displayed on page “Heat source state“ under the name “Actual capacity value BMU X“. The values of P and P are given on the type field of the BMUs. 114/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 115: Heating Circuit Values

    Actual value of the room temperature TRwk Corrected room temperature setpoint Note The gain factor of the room influence is only active when a room unit is connected. 115/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 116: Constant For Quick Setback (Kon)

    If a room sensor is connected, the quick setback time will not be generated from this setting. For details, refer to section "Quick setback with room temperature sensor” (Chapter 6, ”Functions with no settings”). 116/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 117: Boost Of Room Temperature Setpoint

    The boost produces an increase in the flow temperature setpoint. °C Actual value of the room temperature Setpoint boost TRw Room temperature setpoint Time 117/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 118: Frost Protection For The Plant

    -4 °C and is switched on / off when the outside temperature is higher takt TA °C 118/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 119: Overtemperature Protection For The Pump Heating Circuit

    This means that with an on time ratio of 0.6, the pump runs for 6 minutes and is then switched off for the remaining 4 minutes of the cycling period. 119/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 120: Heat Gains

    Press the line selection buttons to select line 36OEM. Setting Press the + / - buttons to adjust adaption sensitivity 1. Display Factory setting 1...15 120/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 121: Adaption Sensitivity 2

    When readjusting the slope of the heating curve (line 17), the adaption sensitivity will Note automatically be reset to the factory-set value. Diagram Example using a nominal room temperature setpoint of 20 °C: 121/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...
  • Page 122 ZAF 2 Adaption sensitivity 2 (line 37 Note For more detailed information about the effects, refer to operating line ”Adaption of heating curve” (line 106). 122/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 123: D.h.w. Values

    The setting will change the switching differential of the d.h.w. temperature control. Entry: Increase: Switching differential will become larger Fewer and longer heating up times, larger temperature variations 123/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 124: Legionella Function

    Press the + / – buttons to activate or deactivate the legionella function. Setting range Unit Factory setting 0 / 1 Increment Effect The setting activates or deactivates the legionella function. Entry: OFF: Function not active. 124/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 125: Setpoint Of The Legionella Function

    Protection against discharging is active only when heat generation is locked Protection only either when heat generation is logged based on comparison between flow sensor B2 and buffer storage tank or 125/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...
  • Page 126 If the boost value is less than 1/8 of the value set, d.h.w. heating will not be released Note Setting 1 may be used only if the cascade return temperature sensor is connected. 126/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 127: Cascade Settings

    - First, determine the required type of lead boiler operation - Determine the required running time strategy - Use the above table to choose the setting required for your application 127/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 128: Type Of Lead Boiler Operation

    51 and 52). linked: A differentiation is made between lead boiler and lag boilers. The RVA47.320 delivers a temperature setpoint to the lead boiler, which translates it into output. The lag boilers take this output as maximum limitation of output, thus following the lead boiler.

  • Page 129: Running Time Strategies

    See line 10 - Entry of maximum limit of output range (Pmax) See line 52 The RVA47.320 initiates changeover only when it leads to a valid operational status while taking the above parameters into consideration. Notes The following parameters also have an impact on the function:...
  • Page 130 20 - 80 %: 100% 100% 100% = increase in output = Switching on = decrease in output = Switching off = Output 130/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 131: Lower Limit Of Output Range (Pmin)

    BMUs' output ratio, an invalid operational status would result after changeover. 131/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 132: Upper Limit Of Output Range (Pmax)

    Note When using heat generating equipment of very high capacity, the longer time leads to a more stable (slower) operating performance. 132/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 133: Minimum Temperature Differential At The Pressureless Header

    Cascade return temperature (B70) Minimum temperature differential at the pressureless header LZS1-3 Running time strategy 1 - 3 a / b Changeover points of running time strategy 133/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 134: Configuration Of Plant

    When connecting several BMUs to the controller, the continuous display always shows the cascade flow temperature. In that case, setting 0 can be no longer selected. 134/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings...

  • Page 135: General Values

    The hours considered as operating hours are those during which power was supplied to the controller, that is, including the periods of time with no effective heating operation. The number of operating hours cannot be reset. 135/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Description of the OEM settings 15.07.2002...

  • Page 136: Functions With No Settings

    The boiler temperature is maintained at the highest setpoint currently demanded - Effect unless d.h.w. is required. 136/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings 15.07.2002...

  • Page 137: Automatic 24-Hour Heating Limit

    TRw +2 S/10 Switching on If the flow temperature setpoint exceeds the room temperature setpoint plus a correction value, the heating will be switched on. 137/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings 15.07.2002...

  • Page 138: With Room Influence

    • Heating’s switch-on point: 31OEM ≥ − TVwk TVwk Flow temperature setpoint corrected by the room temperature Room temperature setpoint Slope of the heating curve 138/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings 15.07.2002...

  • Page 139: Quick Setback With Room Sensor

    If no room sensor is connected, quick setback will not be accomplished through this process. For details, refer to section "Quick setback constant", operating line 31 139/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings...

  • Page 140: D.h.w. Push

    TBWw TBWx SDBW TBWR · SDBW TBWw TBWR Push SDBW Switching differential d.h.w. TBWw Nominal d.h.w. temperature setpoint TBWR Reduced setpoint of the d.h.w. temperature 140/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings 15.07.2002...

  • Page 141: Pump Kick

    The pump kick is a protective function aimed at preventing the pumps from seizing. Description Every Friday at 10:00 h, the pumps connected directly to the RVA47.320 are activated Process for 30 seconds, one by one at an interval of one minute.

  • Page 142: Overview Of Pump Operation

    5) do not run, for example with: • Summer / winter changeover • 24-hour heating limit • Quick setback • Room temperature limitation by room sensor 142/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Functions with no settings 15.07.2002...

  • Page 143: Frost Protection

    • Important The frost protection function only acts on a d.h.w. storage tank connected directly to the RVA47.320. In the case of plant types with d.h.w. heating via BMU, this function must be provided by the BMU. • The frost protection function is only active when using a temperature sensor. If the d.h.w.

  • Page 144: Application Examples

    The outside sensor can be connected either directly to the RVA47.320 or to one of the sensor BMUs to transmit its value to the controller via the PPS, but it can also be connected to some other LPB capable controller to transmit its value to the other LPB capable controllers via the LPB.

  • Page 145: Plant Types Rva47.320 - No. 27

    This application requires the heat demand signal from a consumer to release heat generation: • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.

  • Page 146: Plant Types Rva47.320 - No. 31

    This application requires the heat demand signal from a consumer (or d.h.w. heating) to release heat generation: • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.

  • Page 147: Plant Types Rva47.320 - No. 29

    This application requires the heat demand signal from a consumer to release heat generation: • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.

  • Page 148: Plant Types Rva47.320 - No. 30

    Heat generation is released by the heat demand signal from a consumer: • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.

  • Page 149: Plant Types Rva47.320 - No. 65

    Hydraulic circuit Control of a single BMU or cascade control of up to four BMUs. D.h.w. heating with charging pump through the RVA47.320. System pump for heating circuits and d.h.w. heating connected to RVA47.320. Type of unit BMU 1 BMU 2...

  • Page 150: Plant Types Rva47.320 - No. 66

    Heat generation is released by the heat demand signal from a consumer (or d.h.w. heating): • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.
  • Page 151 Heat generation is released by the heat demand signal from a consumer: • LPB capable controllers signal the RVA47.320 their current heat demand directly via LPB. • Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.
  • Page 152 Pump function Q1 (line 95) 1 (heating circuit pump) Important Other LPB capable controllers on the consumer side signal the RVA47.320 their current heat demand directly via LPB. Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.
  • Page 153 Pump function Q1 (line 95) 1 (heating circuit pump) Important Other LPB capable controllers on the consumer side signal the RVA47.320 their current heat demand directly via LPB. Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.
  • Page 154 Pump function Q1 (line 95) 1 (heating circuit pump) Important Other LPB capable controllers on the consumer side signal the RVA47.320 their current heat demand directly via LPB. Controllers not suited for use with the LPB can deliver their heat demand signal via input H1.

  • Page 155: Plant Types Rva47.320 - No. 65

    Note Hydraulic circuit Control of a single BMU or cascade control of up to four BMUs. Control of the pump heating circuit by the RVA47.320 based on the heat demand signal received via input Type of unit BMU 1 BMU 2...

  • Page 156: Plant Types Rva47.320 - No. 66

    Control of a single BMU or cascade control of up to four BMUs. D.h.w. heating with charging pump through the RVA47.320. Control of the pump heating circuit by the RVA47.320 based on the heat demand signal received via input H1.

  • Page 157: Plant Types Rva47.320 - No. 67

    Control of a single BMU or cascade control of up to four BMUs. D.h.w. heating by one BMU, with changeover valve. Control of the pump heating circuit by the RVA47.320 based on the heat demand signal received via input H1.

  • Page 158: Legend

    The connection diagrams show optional components with broken lines. For application examples with a cascade integrated in systems with alternative heat generation, refer to Basic Documentation ”LPB System Engineering” (document no. CE1P2379E). 158/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Application examples 15.07.2002...

  • Page 159: Dimensions

    Dimensions Room unit 17,4 Panel cutout 2...10 +0.8 +0.8 159/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Dimensions 15.07.2002...

  • Page 160: Technical Data

    460 m Bus loading number E = 3 Perm. sensor cable 0.6 mm dia. max. 20 m lengths 1.0 mm max. 80 m 1.5 mm max. 120 m 160/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Technical data 15.07.2002...
  • Page 161 = 100 kΩ max. ratings 20 V; 20 mA > 12 hours Miscellaneous Backup of time switch Weight approx. 0.5 kg Software class to EN 60 730 class A 161/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Technical data 15.07.2002...
  • Page 162 ..............12 communication via LPB..........99 fixed changeover of boiler sequence......97 Composite outside temperature ........65 Flow temperature setpoint ........69 constant for quick setback........116 frost protection............143 162/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Index 15.07.2002...
  • Page 163 OEM ........27 mandatory time on basic stage ....... 132 parameter settings for the enduser ......20 manual operation ..........35, 112 parameter settings for the heating engineer .....22 163/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Index 15.07.2002...
  • Page 164 ..............37 Weekday..............37 screw / plug-in strips..........11 winter- / summertime ..........104 segment address.............100 winter operation ............45 segment controller.............99 wiring ................ 16 with master function ..........99 164/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Index 15.07.2002...
  • Page 165 Description for line 107 and 108 inserted Effect for entry 3: Shifting/absolute priority – description changed 130- Chapter "Automatic 24-hour heating limit" changed Output relays – Text deleted 165/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E HVAC Products Proof of change 15.07.2002...
  • Page 166 Siemens Building Technologies AG © 1999 Siemens Building Technologies AG HVAC Products Änderungen vorbehalten Gubelstrasse 22 CH 6301 Zug Tel. 41 41-724 24 24 Fax 41 41-724 35 22 www.landisstaefa.com 166/166 Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E Landis & Staefa Division...

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