Related Manuals for Siemens RVL471
Summary of Contents for Siemens RVL471
- Page 1 RVL471 Heating and Domestic Hot Water Controller Basic Documentation Edition: 2.2 Controller series: C Siemens Building Technologies CE1P2524E HVAC Products 23.10.2002...
- Page 2 2/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 23.10.2002...
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Page 3: Table Of Contents
D.h.w. plant type 5 – only electric immersion heater ........20 3.2.14 Summary of plant types and plant combinations ...........21 Setting levels, function blocks and plant types ..........22 Heating circuit operating modes ..............23 3.4.1 Automatic operation ..................23 3/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002... - Page 4 General......................30 5.2.2 Frost protection for the building..............30 Heating program.................... 30 Holiday program .................... 31 Function block "Enduser d.h.w."..............32 Operating lines ....................32 Setpoint ......................32 4/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 5 Maximum limitation of the room temperature..........43 10.5.2 Room influence ....................43 10.6 Heating curve....................44 10.6.1 Purpose......................44 10.6.2 Basic setting ....................44 10.6.3 Deflection .......................45 10.6.4 Parallel displacement of heating curve ............46 5/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 6 Mode of operation in interconnected plants ..........58 Function block "District heat"................. 59 14.1 Operating lines ....................59 14.2 Limitations ..................... 59 14.2.1 Maximum limitation of the primary return temperature........59 6/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 7 Function block "D.h.w. storage tank" .............72 19.1 Operating lines....................72 19.2 D.h.w. charging ....................72 19.2.1 D.h.w. charging with hot water...............72 19.2.2 Alternate d.h.w. charging with hot water and electricity.........72 7/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 8 Circulating pump operation during the legionella function ......81 23.2 Mode of operation ..................81 Function block "Switching program 3"............83 24.1 Operating lines ....................83 24.2 Function ......................83 8/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 9 Combination with room unit QAW50..............96 27.1.3 Combination with room unit QAW70..............96 27.1.4 Combination with SYNERGYR central unit OZW30 ........98 27.2 Communication with other devices ..............98 27.2.1 Data bus......................98 9/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
- Page 10 Connection diagrams .................. 106 29.2.1 Low-voltage side ..................106 29.2.2 Mains voltage side ..................106 Mechanical design ..................107 30.1 Basic design....................107 30.2 Dimensions ....................107 Technical data..................... 108 10/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Contents 23.10.2002...
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Page 11: Summary
• For use in plants with own heat generation or with a district heat connection • With regard to d.h.w. heating, the RVL471 is suited for plants with d.h.w. storage tanks, electric immersion heaters and instantaneous systems with own heat exchangers •... -
Page 12: Suitable Room Units
The scalable DC 0...10 V signal can be used to pass the heat demand signal to other devices in the system. 1.3.6 Documentation Type of documentation Ordering number (for English) Data Sheet RVL471 CE1N2524E Operating Instructions RVL471 4 319 2779 0 Installation Instructions RVL471 4 319 2770 0... -
Page 13: Use
• Interconnected plants consisting of heat generation, several heating zones and central or decentral d.h.w. heating Types of houses and buildings Basically, the RVL471 is suited for use in all types of houses and buildings It has been designed especially for: • Multi-family houses •... - Page 14 • Flow alarm • Legionella function • Manual d.h.w. charging For the preprogrammed heating and d.h.w. heating circuits and their possible combina- tions, refer to section 3.2 ”Plant types”. 14/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 2 Use 23.10.2002...
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Page 15: Fundamentals
Key technical features The RVL471 offers 2 key technical features: • The RVL471 has 6 heating circuit plant types and 5 d.h.w. plant types preprogrammed. When making use of all possible or practical combinations, there is a total of 29 plant types available •... -
Page 16: Plant Types
On the following pages, a description of the individual functions per block and line is given. Plant types The RVL471 has 29 plant types preprogrammed; the functions required for each type of plant are ready assigned. When commissioning the installation, the relevant plant type must be selected. -
Page 17: Heating Circuit Type 1 - Space Heating With Mixing Valve
2-position control acting on the burner. Outside temperature signal from own sensor or data bus. With or without room influ- ence. Heating up and setback according to the heating program. 17/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 18: Heating Circuit Type 3 - Space Heating With District Heat
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. 18/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 19: Heating Circuit Type 6 - Precontrol With District Heat
Heat demand signal from data bus. No heating program. 3.2.8 D.h.w. plant type 0 – no d.h.w. The RVL471 does not provide d.h.w. heating. 3.2.9 D.h.w. plant type 1 – d.h.w. storage tank with charging pump Charging of d.h.w. -
Page 20: Plant Type 3 - Storage Tank With Diverting Valve
Return sensor (primary circuit) Controller RVL471 Return sensor (secondary circuit) Heating circuit mixing valve Outside sensor Diverting valve Heat source (boiler / heat converter) D.h.w. mixing valve 20/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 21: Summary Of Plant Types And Plant Combinations
Precontrol with dis- D.h.w. heating trict heat, heat de- via electric mand signal via data immersion heater only Õ Possible d.h.w. combi- 1, 2 0, 5 nations: 21/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 22: Setting Levels, Function Blocks And Plant Types
‚ The above table shows • the assignment of function blocks to the 3 operating levels • the function blocks activated with the different plant types 22/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 23: Heating Circuit Operating Modes
(with data bus, depending on the setting made). • OFF (button dark): No d.h.w. heating. Frost protection is ensured (with the excep- tion of plant types x–4 and x–5) 23/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 24: Manual Operation
Manual operation The RVL471 can be switched to manual operation. In this case, the control will be switched off. In manual operation, the various actuating devices behave as follows: • Heating circuit mixing valve: This mixing valve is not under voltage, but can be manu-... -
Page 25: Operating State And Operational Level
When the operating state is ON, there is a maximum of 3 operational levels, depending on the operating mode. The operational level is determined by the heating program and the holiday program. Operating mode Operating state Operational level 25/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 3 Fundamentals 23.10.2002... -
Page 26: Acquisition Of Measured Values
• A room unit QAW50 or QAW70 can be connected to terminal A6 • 2 units can be connected to the terminals. In this case, the RVL471 can ascertain the average of the 2 measurements. The other room unit functions will not be affected by averaging 4.1.2... -
Page 27: Handling Faults
Handling faults If there is a short-circuit or open-circuit in the measuring circuit, and if the controller requires the return temperature, it responds as follows: 27/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 4 Acquisition of measured values 23.10.2002... -
Page 28: Secondary Return Temperature (B71)
In the event of a short-circuit or open-circuit in one of the 2 measuring circuits, the controller continues to work with the other measuring circuit, if possible. An error mes- sage will not be generated. 28/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 4 Acquisition of measured values 23.10.2002... - Page 29 Exception: With plant type x–2, the d.h.w. storage tank is always charged when sensor B3 (d.h.w. flow) works normally 29/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 4 Acquisition of measured values 23.10.2002...
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Page 30: Function Block "Enduser Space Heating
ECO – if available – will stop OFF until the room temperature has risen 1 °C above the holiday / frost protection setpoint. Heating program The heating program of the RVL471 provides a maximum of 3 heating periods per day; also, every weekday may have different heating periods. Caution The entries to be made are not the switching times, but the periods of time during which the NORMAL room temperature shall apply. -
Page 31: Holiday Program
/ holiday mode takes place. At 24:00 of the last day of the holiday period, the RVL471 will change to NORMAL or REDUCED heating in accordance with the time switch settings. -
Page 32: Function Block "Enduser D.h.w
If the measurement is made with one or 2 thermostats, it is not possible to display the actual value. In that case, the display shows ---. 32/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 6 Function block "Enduser d.h.w."... -
Page 33: Function Block "Enduser General
• As a time switch program for the release of d.h.w. heating • As a time switch program for the multi-functional relay Switching program 2 of the RVL471 affords a maximum of three ON periods per day. Also, every day of week may have different ON periods. -
Page 34: Indication Of Errors
= error number = segment number = device number The error message disappears only after rectification of the fault. There will be no ac- knowledgement! 34/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 7 Function block "Enduser general" 23.10.2002... -
Page 35: Function Block "Plant Type
They will not be displayed. Example for an entry (selection of plant type 1–2) = heating circuit type 1 = d.h.w. circuit type 2 35/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 8 Function block "Plant type" 23.10.2002... -
Page 36: Function Block "Cascade Slave
Note Automatic boiler sequence changeover according to the number of burner operating hours is not possible with the RVL471 since this controller does not acquire the number of burner operating hours. Boiler management functions must be provided in the cas- cade master. -
Page 37: Function Block "Space Heating
This ensures that no heating will take place in the summer when, under normal circumstances, the heating would be switched on because the outside temperature drops for a few days 37/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 38: Heating Limits
When the ECO function has switched the heating off, the display shows ECO. Switching the heating on The heating will be switched on again only when all 3 of the following conditions are satisfied: 38/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 39: Operating Modes And Operating States
It is possible to select or set: • The type of optimization: either with a room sensor / room unit or based on the room model 39/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 40: Process
To ascertain the room temperature generated by the room model, a distinction must be made between 2 cases: • The RVL471 is not in quick setback mode: The room temperature generated by the room model is identical to the current room... -
Page 41: Optimum Stop Control
10.4.5 Optimum stop control During the building's occupancy time, the RVL471 maintains the setpoint of NORMAL heating. Towards the end of the occupancy time, the control switches to the REDUCED setpoint. Optimization calculates the changeover time such that, at the end of occu- pancy, the room temperature will lie 0.5 °C below the setpoint of NORMAL heating... -
Page 42: Optimum Start Control
10.4.7 Optimum start control During the building’s non-occupancy times, the RVL471 maintains the setpoint of REDUCED heating. Toward the end of the non-occupancy time, optimization switches the control to boost heating. This means that the selected boost will be added to the room temperature setpoint. -
Page 43: Room Functions
0 = room temperature deviations have no impact on the generation of the setpoint 20 = room temperature deviations have a maximum impact on the generation of the setpoint 43/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 44: Heating Curve
• Flow temperature setpoint at an outside temperature of +15 °C The basic setting during commissioning is made according to the planning documenta- tion or in agreement with local practices. 44/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 45: Deflection
The heating curve is valid for a room temperature setpoint of 20 °C. 45/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 46: Parallel Displacement Of Heating Curve
– the current flow temperature setpoint is generated. It can be called up on operating line 165 (also refer to chapter “25 Function block "Service functions and general settings""). 46/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 10 Function block "Space heating" 23.10.2002... -
Page 47: Generation Of Setpoint
Demand-compensated control is used with plant types 4 x, 5 x, and 6 The setpoint is delivered to the RVL471 via the data bus (LPB) in the form of a heat demand signal. In that case, the outside temperature will not be taken into considera- tion. -
Page 48: Function Block "3-Position Actuator Heating Circuit
Minimum limitation is also active during storage tank charging, depending on the kind of priority. With plant types 3–1 and 3-3, where maximum limitation is not active during storage tank charging. 48/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 11 Function block "3-position actuator heating circuit" 23.10.2002... -
Page 49: Setpoint Rise
In interconnected plants, an excess mixing valve or heat exchanger temperature can be entered on the RVL471. This is a boost of the respective heating zone's flow tempera- ture setpoint. The higher setpoint is delivered to the heat source as the heat demand signal. -
Page 50: Pulse Lock
This minimizes the strain on the actuator. For safety reasons, the controller delivers a one-minute closing pulse at 10-minute intervals. An opening pulse negates the pulse lock. 50/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 11 Function block "3-position actuator heating circuit" 23.10.2002... -
Page 51: Function Block "Boiler
If the return temperature is limited, the display shows This maximum limitation cannot be used as a safety function; for that purpose, thermo- stats, thermal reset limit thermostats, etc., must be used. 51/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 12 Function block "Boiler" 23.10.2002... -
Page 52: Minimum Limitation Of The Boiler Temperature
(burner cycling protection). This means that the minimum burner running time has pri- ority. Maximum limitation of the boiler temperature will be maintained, however, which always leads to burner shutdown. 52/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 12 Function block "Boiler" 23.10.2002... -
Page 53: Control With A 2-Stage Burner
The first stage continues to operate. If the flow temperature drops, the second − stage will be switched on again at x < w SD. The setpoint is now maintained by the second burner stage. 53/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 12 Function block "Boiler" 23.10.2002... -
Page 54: Frost Protection For The Boiler
If the boiler temperature falls below 5 °C, the burner will always be switched on until the boiler temperature has crossed the minimum limit by the amount of the switching differ- ential. 54/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 12 Function block "Boiler" 23.10.2002... -
Page 55: Protective Boiler Startup
Protection against boiler overtemperatures To prevent heat from building up in the boilers (protection against overtemperatures), the RVL471 offers a protective function. When the first burner stage is switched off, the controller allows pump M1 to overrun for the set pump overrun time (operating line 174 on the boiler temperature controller), generating at the same time a forced signal to all loads (inside the controller on the data bus). -
Page 56: Operating Mode Of Pump M1
• Circulating pump with deactivation (setting 1): The circulating pump runs when one of the consumers calls for heat. It is deactivated during protective boiler startup. 56/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 12 Function block "Boiler" 23.10.2002... -
Page 57: Function Block "Setpoint Of Return Temperature Limitation
If the return temperature returns to a level above the minimum limit, the integral will be reduced, resulting in a reduction of the critical locking signal. The connencted loads rise their setpoint values. 57/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 13 Function block "Setpoint of return temperature limitation" 23.10.2002... -
Page 58: Mode Of Operation With A Single Device (With No Bus)
This means they generate a critical locking signal internally. For response to criti- cal locking signals, refer to section “25.4.7 Gain of locking signal“. 58/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 13 Function block "Setpoint of return temperature limitation"... -
Page 59: Function Block "District Heat
• If the outside temperature is lower than the value set for the start of compensation, the current limit value is calculated according to the following formula: − T [°C] = T + [ ( T L constant L start 59/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 14 Function block "District heat" 23.10.2002... -
Page 60: Maximum Limitation Of Return Temperature Differential (Drt Limitation)
• is a dynamic return temperature limitation • shaves peak loads • ensures the lowest possible return temperature Example of the effect of maximum limitation of the return temperature differential: 60/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 14 Function block "District heat" 23.10.2002... -
Page 61: Integral Action Time
The stroke assigned to the minimum volumetric flow must be acquired by an auxiliary switch fitted in the actuator and delivered to the RVL471. When bridging terminals H4−M, the valve will close and the waiting time commences. -
Page 62: Function Block "Maximum Limitation Of The Return Temperature, D.h.w
Maximum limitation of the return temperature in the d.h.w. circuit (operating line 117) The return temperature is acquired with sensor B7. 62/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 15 Function block "Maximum limitation of the return temperature, d.h.w."... - Page 63 If the function is active, the display shows This maximum limitation has priority over minimum limitation of the flow temperature. 63/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 15 Function block "Maximum limitation of the return temperature, d.h.w."...
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Page 64: Function Block "Basic Settings D.h.w
According to one or several heating programs According to switching program 2 of own controller According to switching program 3 of own controller 64/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 16 Function block "Basic settings d.h.w." 23.10.2002... -
Page 65: Operation Of Circulating Pump During The Holiday Period
0, 1, 2, or 3 Circulating pump OFF, if all controllers in the intercon- nected system are in holiday mode 65/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 16 Function block "Basic settings d.h.w." 23.10.2002... -
Page 66: Frost Protection For D.h.w
16.4 Frost protection for d.h.w. The frost protection for d.h.w. provided by the RVL471 is ensured by sensors B3, B31 and B32. The behavior depends on the type of plant. 16.4.1 Frost protection in the d.h.w. storage tank This type of frost protection is used with plant types x–1, x–2, and x–3. It always en- sures a minimum switch-on temperature of 5 °C. -
Page 67: Function Block "Release Of D.h.w. Heating
D.h.w. heating is released Continuously (24 hours a day) According to one or several heating programs According to switching program 2 of own controller 67/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 17 Function block "Release of d.h.w. heating" 23.10.2002... -
Page 68: Heating During The Holiday Period
0, 1, or 2 No d.h.w. heating when all controllers in the intercon- nected system are in holiday mode 68/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 17 Function block "Release of d.h.w. heating" 23.10.2002... -
Page 69: Function Block "D.h.w. Priority And Flow Temperature Setpoint
If the consumer master is in segment 0, the uncritical locking signal will be delivered to all controllers in all segments. 69/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 18 Function block "D.h.w. priority and flow temperature setpoint"... -
Page 70: Shifting Priority
With d.h.w. charging, the setpoint of the common flow temperature will then be the higher of the 2, namely 65 °C. 70/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 18 Function block "D.h.w. priority and flow temperature setpoint"... -
Page 71: D.h.w
65 °C. With d.h.w. charging, the setpoint of the common flow temperature will then be that of the d.h.w. circuit, namely 65 °C. 71/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 18 Function block "D.h.w. priority and flow temperature setpoint"... -
Page 72: Function Block "D.h.w. Storage Tank
With plant types x–5 (electric immersion heater only ), this function block is not active since the electric immersion heater provides the functions independent of the RVL471. 19.1 Operating lines Line... -
Page 73: Temperature And D.h.w. Switching Differential
From the 2 tables above, it is obvious that when using 2 sensors, it is irrelevant which of the 2 sensors is fitted at the top and which at the bottom of the d.h.w. storage tank. 73/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 19 Function block "D.h.w. storage tank"... -
Page 74: Boost Of The D.h.w. Charging Temperature
This function raises the d.h.w. temperature periodically, thus making certain that legionella viruses will be killed. For description, refer to chapter "23 Function block "Legionella function" 74/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 19 Function block "D.h.w. storage tank" 23.10.2002... -
Page 75: Forced Charging
Sensor B3 Sensor B3 5–1 Sensor B1 Sensor B1 5–2 Sensor B3 Sensor B3 6–1 Sensor B1 Sensor B1 6–2 Sensor B3 Sensor B3 75/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 19 Function block "D.h.w. storage tank" 23.10.2002... -
Page 76: Manual D.h.w. Charging
(button extinguishes). If the d.h.w. is heated with an electric immersion heater, manual charging is not possi- ble. 76/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 19 Function block "D.h.w. storage tank" 23.10.2002... -
Page 77: Function Block "3-Position Actuator For D.h.w
This minimizes the strain on the actuator. For safety reasons, the controller delivers a one-minute closing pulse at 10-minute intervals. An opening pulse negates the pulse lock. 77/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 20 Function block "3-position actuator for d.h.w." 23.10.2002... -
Page 78: Function Block "Derivative Action Time D.h.w. Heating Via Heat Exchanger
The 3-position controller provides PID mode. The derivative action time Tv (D-part) can be set on operating line 137. 78/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 21 Function block "Derivative action time d.h.w. heating via heat exchanger"... -
Page 79: Function Block "Multi-Functional Relay
Function block "Multi-functional re- lay" The RVL471 features a multifunctional relay whose function is selected on this block. This relay is also used for controlling an electric immersion heater for d.h.w. heating. This means that if the parameters of the controller are set to "Electric heater for d.h.w. -
Page 80: On / Off According To The Time Switch
In that case, the multifunctional relay is always de-energized. 22.2.4 Relay energized in the event of fault If, at the RVL471, a fault status message is present, either from the controller itself or from the data bus (LCD displays ), the multifunctional relay will be energized. -
Page 81: Function Block "Legionella Function
• A legionella setpoint is adjusted • D.h.w. heating is switched on (button lit) • The holiday function and operating mode changeover via contact H1 are not active 81/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 23 Function block "Legionella function" 23.10.2002... - Page 82 If a maximum d.h.w. charging time is set, it also acts here. If the legionella setpoint is not reached, the legionella function is interrupted and resumed at the end of the maxi- mum charging time. 82/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 23 Function block "Legionella function" 23.10.2002...
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Page 83: Function Block "Switching Program 3
--:-- / 00:00...24:00 24.2 Function Switching program 3 of the RVL471 affords a maximum of 3 ON periods per day. Also, every day of week may have different ON periods. As with the heating program, it is not switching times that are entered, but periods of time during which the program or the controlled function shall be active. -
Page 84: Function Block "Service Functions And General Settings
• Parallel displacement (setting on operating line 72) With demand-compensated control (plant types 4–x, 5–x, and 6–x), the display shows ---. 84/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 25 Function block "Service functions and general settings" 23.10.2002... -
Page 85: Heating Curve
Flow temperature setpoint (generated via the heating curve) 25.2.3 Hours run counter The number of controller operating hours is displayed. Whenever operating voltage is present, the RVL471 counts the hours. The maximum reading is limited to 500,000 hours (57 years). 25.2.4 Software version The controller displays the software version in use. -
Page 86: Identification Number Of Room Unit
Radio clock, elapsed time since last reception If a radio clock receiver is connected to the data bus, the RVL471 can receive the radio signals via data bus. On operating line 197, it is possible to see how much time has elapsed (hh:mm) since the radio clock receiver received the last correct time telegram. -
Page 87: Relay Test
Setpoint of room temperature. Actual value of room unit sensor at With the plant types with no rooms, terminal A6 the display shows --- 87/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 25 Function block "Service functions and general settings" 23.10.2002... -
Page 88: Test Of H-Contacts
25.4 Auxiliary functions 25.4.1 Frost protection for the plant The plant can be protected against frost. For this purpose, the RVL471 and the heat source equipment must be ready to operate (mains voltage present!). The following settings are required: • The outside temperature at which frost protection shall respond •... -
Page 89: Flow Alarm
If the outside temperature falls below the limit value (setting on operating line 167 mi- nus 0.5 °C), the RVL471 will switch the circulating pump on (pump connected to termi- nal Q1) and maintain the flow temperature at the selected minimum level. -
Page 90: Manual Overriding Of Operating Mode (Contact H1)
(approx. 0.5 Hz). The buttons themselves are however inop- erable. Once this function is deactivated, the RVL471 will resume the operating mode previ- ously selected. With plant types 4–x, 5–x, and 6–x, contact H1 only acts on the d.h.w. circuit. -
Page 91: Gain Of Locking Signal
When a defined value of the critical locking signal is reached, the pump will be deacti- vated, independent of the set locking signal gain In plants with changeover valve, the valve assumes the "Heating circuit” position 91/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 25 Function block "Service functions and general settings" 23.10.2002... -
Page 92: Entries For Lpb
Source of time of day Depending on the master clock, different sources for the time of day can be used. The source must be entered on the RVL471, on operating line 178, using setting 0…3: 0 = autonomous clock in the RVL471 1 = time of day from the bus;... -
Page 93: Addressing The Devices
On each connected device, it is then necessary to set whether the data bus is powered centrally or decentrally by each controller. With the RVL471, this setting is made on operating line 179. The display shows the current setting as SET and the current bus power supply status as actual. -
Page 94: Bus Loading Number
25.5.5 Bus loading number The bus loading figure E for the LPB of the RVL471 is 7. The total of all E-numbers of the devices connected to the same bus may not exceed the limit of 300. 25.6 Heat demand output DC 0...10 V Operating line 181 is described in section "27.2.2 Heat demand signal... -
Page 95: Function Block "Locking Functions
To make the link across H3-M inaccessible, the controller can be sealed to prevent its removal. Refer to section “28 Handling". 95/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 26 Function block "Locking functions" 23.10.2002... -
Page 96: Communication
27.1.1 General • Room units can be used with the RVL471 only if one of the plant types 1–x, 2–x, or 3–x has been selected on the controller • The room temperature acquired by a room unit is adopted by the RVL471 at terminal A6. - Page 97 From the QAW70, the heating circuit’s operating mode of the RVL471 can be overrid- circuit’s operating mode den. This is accomplished with the operating mode button and the economy button. To enable the room unit to act on the RVL471, the following operating conditions must be satisfied: • AUTO mode for heating circuit •...
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Page 98: Combination With Synergyr Central Unit Ozw30
Based on the room temperature of the individual apartments, the OZW30 central unit (software version 3.0 or higher) generates a load compensation signal. This signal is passed on via the LPB to the RVL471 where it produces an appropriate change of the flow temperature setpoint. -
Page 99: Heat Demand Signal
27.2.2 Heat demand signal Using the DC 0...10 V heat demand signal (terminals Ux–M), the RVL471 can transmit the heat demand to other devices. The heat demand corresponds to the heat requisition in °C and - in terms of value - is identical with the heat requisition that reaches the primary controller via the data bus (LPB). -
Page 100: Handling
Setting slider for flow temperature setpoint at an outside temperature of 5 °C Setting slider for flow temperature setpoint at an outside temperature of 15 °C Knob for room temperature readjustments Fixing screw with sealing facility 100/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 28 Handling 23.10.2002... -
Page 101: Analog Operating Elements
A knob is used for, making manual room temperature readjustments. Its scale gives the ture readjustments room temperature change in °C. By turning the knob, the heating curve is displaced parallel (functionally), but the bar maintains its position. 101/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 28 Handling 23.10.2002... -
Page 102: Digital Operating Elements
The Info button is used to obtain basic information about the plant. Pressing this button, the cursor in the display is placed below the required symbol. The numbers on the display have the following meaning: 102/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 28 Handling 23.10.2002... -
Page 103: Setting Levels And Access Rights
28.2.1 Installation instructions The RVL471 is supplied with Installation Instructions which give a detailed description of installation, wiring and commissioning with functional checks and settings. They have been written for trained specialists. Each operating line has an empty field in which the selected value can be entered. -
Page 104: Installation
28.3.2 Mounting choices • The RVL471 can be mounted in one of 3 different ways: • Wall mounting: The base is secured to a flat wall with 3 screws • Rail mounting: The base is snapped on a DIN mounting rail •... -
Page 105: Engineering
D.h.w. mixing valve / valve OPEN D.h.w. mixing valve / valve CLOSED In addition to the standard connection terminals, there are 2 auxiliary terminals for N and available. 105/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 29 Engineering 23.10.2002... -
Page 106: Connection Diagrams
Actuator of diverting valve 2-stage burner Actuator for d.h.w. circuit Thermal reset limit thermostat Wire link for locking the district heat parameters Safety limit thermostat Multifunctional output 106/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 29 Engineering 23.10.2002... -
Page 107: Mechanical Design
The cover can be sealed; cover and housing are provided with lugs for introduction of a safety wire. The RVL471 has standard overall dimensions of 144 144 mm. It can be mounted in one of 3 different ways: •... -
Page 108: Technical Data
Transport and storage 0..0.50 °C Operation Weight (net) 1.2 kg For setting ranges, refer to the descriptions of the function blocks or of the individual operating lines. 108/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 31 Technical data 23.10.2002... - Page 109 ......... 72 combination with room units........96 electronics .............. 107 combinations .............16 engineering............. 105 commissioning............103 entries for LPB............92 commissioning aids ...........86 ERROR..............34 communication ............98 Error messages ............34 109/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Index 23.10.2002...
- Page 110 ....... 102 master clock.............. 92 handling ..............100 maximum charging time ..........74 handling faults ............ 26, 27 maximum limitation of return temperature d.h.w..62 H-contacts..............88 110/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Index 23.10.2002...
- Page 111 ..........18 short-circuit ............... 26 precontrol with district heat........19 simulation of the outside temperature ...... 86 precontrol with mixing valve ........18 slope of maximum limitation ........59 111/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Index 23.10.2002...
- Page 112 / summertime changeover......90 summertime .............. 33 wintertime............33, 90 suppression of hydraulic creep ......... 61 wiring............... 103 switching differential of the d.h.w. temperature ..73 switching program 2..........33 112/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Index 23.10.2002...
- Page 113 End of third ON period End of third ON period Flow alarm Flow temperature boost mixing valve / heat exchanger Flow temperature boost mixing valve / heat exchanger 113/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Alphabetical list of operating lines 23.10.2002...
- Page 114 Outside temperature for frost protection for the plant Outside temperature simulation Outside temperature source Outside temperature switch, switch-off value for occupancy time Outside temperature switch, switch-off value for non-occupancy time 114/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Alphabetical list of operating lines 23.10.2002...
- Page 115 Summer- / wintertime changeover Switching differential of the boiler Switching differential of the d.h.w. temperature Test of H-contacts Time of day Time of legionella function 115/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Alphabetical list of operating lines 23.10.2002...
- Page 116 Waiting time for second burner stage Weekday Weekday for the heating program Weekday for switching program 2 Weekday for switching program 3 Winter- / summertime changeover Year 116/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products Alphabetical list of operating lines 23.10.2002...
- Page 117 Operating line 181 added 25.6 New section 27.1.3 D.h.w. setpoint is the NORMAL setpoint 27.2.2 Scaling added Voltage and current range of relays corrected Backup refers to time of day 117/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products 23.10.2002...
- Page 118 Siemens Building Technologies Ltd. © 1997 Siemens Building Technologies Ltd. HVAC Products Subject to alteration Gubelstrasse 22 CH -6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.landisstaefa.com 118/118 Siemens Building Technologies Basic Documentation RVL471 CE1P2524E HVAC Products...