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CE1P2522E / 30.03.2000

Basic Documentation RVL470

Siemens Building Technologies

32/68

Function block "Boiler"

Landis & Staefa Division

10.3.2. Minimum limitation of the boiler return temperature

For minimum limitation of the boiler temperature, a minimum limit value can be adjusted.
The switch-on point cannot fall below the minimum limit value. The switch-off point will
then be higher by the amount of the set switching differential.
If the return temperature is limited, the display shows .

10.4. Two-position control

Two-position control controls the boiler temperature by switching a single- or two-stage
burner on and off.
The control's commands to the burner or burner stages are fed to the output relays and
indicated by LEDs.

10.4.1. Control with a single-stage burner

For two-position control with a single-stage burner, the variables that can be set are the
switching differential and the minimum burner running time.
The controller compares the actual value of the boiler temperature with the setpoint. If
the boiler temperature falls below the setpoint by half the switching differential, the
burner will be switched on. If the boiler temperature exceeds the setpoint by half the
switching differential, the burner will be switched off.

T

K

25

22

D

1

6

ON

OFF

T

Kw

SD

2

SD

2

SD
T

K

T

Kw

Switching differential
Boiler temperature
Boiler temperature setpoint

If there is no more deviation before the minimum burner running time has elapsed, the
burner will nevertheless remain activated until that time is completed (burner cycling
protection). This means that the minimum burner running time has priority, provided the
boiler temperature will not exceed the maximum limit, which will always lead to burner
shutdown.

T

Kw

+ 0,5

*

SD

0

1

252

2D14

T

K

T

Kw

T

Kw

- 0,5

*

SD

T

Kx

t

Y

B

SD

Switching differential

t

Time

T

K

Boiler temperature

w

TK

Boiler temperature setpoint

x

TK

Actual value of the boiler temperature

Y

B

Burner control signal

Note: when controlling a single-stage burner, the reset limit of the second stage should
be set to zero.

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Summary of Contents for RVL469

Page 1: ...CE1P2522E 30 03 2000 Siemens Building Technologies Landis Staefa Division RVL470 and RVL469 Heating Controllers Basic Documentation Edition 2 1 Controller series B ...

Page 2: ... 1996 Siemens Building Technologies Ltd Siemens Building Technologies AG Landis Staefa Division Gubelstrasse 22 CH 6301 Zug Tel 041 724 11 24 Fax 041 724 35 22 http www landisstaefa com ...

Page 3: ... Space heating with a mixing valve 5 3 2 2 Plant type 2 Space heating with a boiler 6 3 2 3 Plant type 3 Space heating with district heat 6 3 2 4 Plant type 4 Pre control with a mixing valve 6 3 2 5 Plant type 5 Pre control with a boiler 7 3 2 6 Plant type 6 Pre control with district heat 7 3 3 Plant types and function blocks 7 3 4 Operating modes 8 3 4 1 Automatic mode 8 3 4 2 Continuous REDUCED ...

Page 4: ...lts 15 7 Function block Plant type 17 7 1 Operating line 17 7 2 General 17 8 Function block Space heating 18 8 1 Operating lines 18 8 2 ECO function 18 8 2 1 Compensating variables and auxiliary variables 18 8 2 2 Heating limits 19 8 2 3 Mode of operation 19 8 2 3 1 Switching the heating off 19 8 2 3 2 Switching the heating on 20 8 2 4 Operating modes and operational statuses 20 8 3 Room temperatu...

Page 5: ... 31 10 1 Operating lines 31 10 2 Operating mode 31 10 3 Limitations 31 10 3 1 Maximum limitation of the boiler temperature 31 10 3 2 Minimum limitation of the boiler return temperature 32 10 4 Two position control 32 10 4 1 Control with a single stage burner 32 10 4 2 Control with a two stage burner 33 10 4 2 1 Setting parameters 33 10 4 2 2 Control 33 10 4 3 Frost protection for the boiler 34 10 ...

Page 6: ...int 43 13 2 2 Heating curve 44 13 3 Commissioning aids 44 13 3 1 Simulation of outside temperature 44 13 3 2 Relay test 45 13 3 3 Sensor test 45 13 3 4 Test of H contacts 46 13 4 Auxiliary functions 46 13 4 1 Frost protection for the plant 46 13 4 2 Flow alarm 46 13 4 3 Manual overriding of operating mode contact H1 47 13 4 4 Pump overrun 47 13 4 5 Pump kick 48 13 4 6 Winter summertime changeover ...

Page 7: ...ies from the RVL470 57 17 1 4 Combination with SYNERGYR central unit OZW30 57 17 2 Communication with other devices 57 18 RVL469 58 18 1 Features and function 58 18 2 Technical design 58 18 2 1 Type of plant 58 18 2 2 Operation with a partner 58 18 2 3 Handling errors 59 18 2 3 1 Wrong addressing 59 18 2 3 2 Missing or wrong partner 59 18 2 4 Passive mode 59 19 Handling 60 19 1 Operation 60 19 1 1...

Page 8: ...er operating lines 64 19 2 2 3 Operating lines for functional checks 64 19 3 Installation 64 19 3 1 Location 64 19 3 2 Mounting choices 64 19 3 3 Wiring 64 20 Engineering 65 20 1 Connection terminals 65 20 1 1 Low voltage side 65 20 1 2 Mains voltage side 65 20 2 Connection diagrams 66 20 2 1 Basic connections on the low voltage side 66 20 2 2 Basic connections on the mains voltage side 66 21 Mech...

Page 9: ...cess Bus The RVL470 has 6 types of plants pre programmed When a certain plant type is se lected all functions and settings required for that particular plant will be activated For the direct setting of the heating curve the proven bar is used but digital adjust ment of the heating curve is also possible For readjustment of the room temperature a setting knob is used L S standard All other paramete...

Page 10: ...ith the following types of units All controllers made by Landis Staefa with LPB communication capability SYNERGYR central unit OZW30 software version 3 0 or higher 1 4 5 Documentation Type of documentation Ordering number for English Data sheet RVL470 CE1N2522E Data sheet RVL469 CE1N2527E Operating Instructions RVL470 4 319 2634 0 Operating Instructions RVL469 74 319 0008 0 Installation Instructio...

Page 11: ...ating systems Ceiling heating systems Radiant panels 2 4 Functions The RVL470 is used if one or several of the following functions is are required Weather compensated flow temperature control Flow temperature control through a modulating seat or slipper valve or boiler tem perature control through direct control of a single or two stage burner Optimum start stop control according to the selected w...

Page 12: ...ies 4 68 Use Landis Staefa Division Minimum and maximum limitation of flow temperature Maximum limitation of room temperature Periodic pump run Pump overrun Maximum limitation of the rate of setpoint increase Flow alarm For application examples refer to section 3 Fundamentals ...

Page 13: ...ction block Three position actuator for heating circuit Function block Boiler Function block Setpoint of return temperature limitation Function block Settings for plant type 3 Function block Service functions and general settings Function block Contact H2 Function block Contact H2 and general displays Function block Locking functions For each function block the required settings are available in t...

Page 14: ...ogram 3 2 3 Plant type 3 Space heating with district heat B9 A6 B5 B7 B71 Space heating with a district heat connection with weather compensated flow tem perature control through the valve in the primary return of the district heat connection Outside temperature signal from own outside sensor or data bus With or without room temperature influence Heating up and setback according to the heating pro...

Page 15: ...erating equipment B1 Flow boiler temperature sensor boiler heat exchanger B5 Room temperature sensor E2 Load space B7 Return temperature sensor primary circuit LPB Data bus B71 Return temperature sensor secondary circuit M1 Heating circuit pump circulating pump B9 Outside sensor N1 Controller RVL470 Y1 Heating circuit mixing valve 3 3 Plant types and function blocks Plant type Level Function block...

Page 16: ...g Continuous heating to the REDUCED temperature With ECO function No holiday mode Remote operation from a room unit not possible Frost protection is assured 3 4 3 Continuous NORMAL heating Continuous heating to NORMAL temperature No ECO function No holiday mode Remote operation from a room unit not possible Frost protection is assured 3 4 4 Standby Heating is switched off but is ready to operate F...

Page 17: ...ES 3 5 Operational status and operational level The user selects the required operating mode by pressing the respective button Each operating mode has a maximum of two operational statuses with the exception of op erating mode Continuously NORMAL heating only one operational status possible When the ECO function is activated and in the case of quick setback the operational status is always OFF Whe...

Page 18: ...In the event of a short circuit or open circuit the control continues to operate de pending on the function of the room model A fault status message will be generated Average value operating line 65 3 In the event of a short circuit or open circuit in one of the two measuring circuits the control continues to operate with the normally working measuring circuit A fault status message will be genera...

Page 19: ...mperature A fault status signal is always generated In the event of an interruption If the controller requires an outside temperature and it is made available via LPB it is used There will be no fault status signal in that case this is the usual status in inter connected plants If however there is no outside temperature made available via LPB the control uses a fixed value of 0 C In that case a fa...

Page 20: ... with a sensor having a sensing element LG Ni 1000 Ω at 0 C This measured value is required for limitation of the temperature differential DRT limitation plant types 3 and 6 together with the primary return tem perature 4 1 5 2 Handling of faults If there is a short circuit or open circuit in the measuring circuit and if the controller re quires the return temperature DRT limitation will be deacti...

Page 21: ...he plant holiday mode are entered directly in C room temperature They are inde pendent of whether or not the control uses a room temperature sensor 5 2 2 Frost protection for the building The lowest valid room temperature setpoint always corresponds to at least the setpoint of frost protection holiday mode setting on operating line 3 even if lower values have been entered as the setpoints of the N...

Page 22: ...ds per year can be programmed At 00 00 of the first day of the holiday period changeover to the setpoint of frost protection holiday mode takes place After 24 00 of the last day of the holiday period the RVL470 will change to NORMAL or REDUCED mode in accordance with the time switch settings The settings of each holiday period will be cleared as soon as the respective period has elapsed The holida...

Page 23: ...Interruption or short circuit in the flow or boiler temperature sensor s measuring circuit B1 40 Interruption or short circuit in the measuring circuit of the return tem perature sensor in the primary circuit B7 42 Interruption or short circuit in the measuring circuit of the return tem perature sensor in the secondary circuit B71 60 Interruption or short circuit in the room temperature sensor s m...

Page 24: ...es 16 68 Function block End user 2 Landis Staefa Division Example of display in interconnected plants 2522Z05 50 10 2 03 line number error code device number segment number The fault status signal disappears only after rectification of the fault There will be no acknowledgment ...

Page 25: ... parameter Unit Factory setting Range 51 Plant type 1 1 6 7 2 General When commissioning the plant the respective plant type must be entered first This en sures that the functions required for the specific type of plant the parameters and oper ating lines for the settings and displays will be activated All plant specific variables and operating lines that are available for the other plant types wi...

Page 26: ...e ECO function the heating system operates only or consumes energy only when required 8 2 1 Compensating variables and auxiliary variables The ECO function takes into account the development of the outside temperature and the heat storage capacity of the building The following variables are taken into consideration The building time constant This is the measure of the type of building construction...

Page 27: ...lower temperature level this may be REDUCED heating or OFF holidays frost protection In both cases the heating limit is the outside temperature at which the heating shall be switched on and off The switching differential is 1 C 8 2 3 Mode of operation 8 2 3 1 Switching the heating off The heating will be switched off when one of the three following conditions is satisfied The actual outside temper...

Page 28: ...ature source can be selected on operating line 65 The following settings are possible Operating line 65 Room temperature source 0 No room temperature sensor 1 Room unit connected to terminal A6 2 Room temperature sensor connected to terminal B5 3 Average value of devices connected to terminals A6 and B5 A Automatic selection Line 65 also displays the room temperature source effectively used by the...

Page 29: ...imization continually acquires the room temperature and the respective outside temperature It captures these variables via the room temperature sensor and the outside sensor and continually adjusts the forward shift of the switching points In this way optimization can also detect changes made to the building and to take them into consideration The learning process always concentrates on the first ...

Page 30: ...emperature 8 4 5 Optimum stop control During the building s occupancy times the RVL470 maintains the setpoint of NORMAL heating Toward 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 be 0 5 C below the setpoint of NORMAL heating op timum shutdown By entering 0 hours a...

Page 31: ...no room temperature sensor the forward shift in time is calculated as follows t min TRw TRM 60 where t Forward shift TRw Setpoint of the NORMAL room temperature TRM Room model temperature Optimum start control with the room model takes place only if a quick setback was pre viously effected Optimum start control can be deactivated by entering 0 hours as the maximum heating up period 8 4 8 Boost hea...

Page 32: ...ting TRw Room temperature setpoint TRw Boost of room temperature setpoint with boost heating 8 5 Room functions 8 5 1 Maximum limitation of the room temperature For the room temperature it is possible to have an adjustable maximum limitation in which case a room temperature sensor is required sensor or room unit If the room temperature lies 1 C above the limit value the room temperature setpoint w...

Page 33: ...oom tem perature setpoint is calculated as follows TVw K TRw 1 s where s Heating curve slope TRw Room temperature setpoint TRw Change of room temperature setpoint TRw Reduction of room temperature setpoint TRw Increase of room temperature setpoint TRx Actual value of room temperature TR Room temperature deviation TRw TRx TVw Change of flow temperature setpoint VF Gain factor 8 6 Heating curve 8 6 ...

Page 34: ... the heat output of radiators does not in crease proportionally when the difference between radiator and room temperature in creases For this reason the radiators heat exchanger characteristic is deflected The heating curve s deflection takes these properties into consideration In the range of small slopes e g with underfloor heating systems the heating curve is practically linear due to the small...

Page 35: ...urve 20 10 0 10 20 30 90 80 70 60 50 40 30 2522D10 100 0 10 10 0 30 TRw TA TV s Slope TA Outside temperature TV Flow temperature TWR Room temperature setpoint 8 6 5 Display of setpoints Two setpoints result from the basic setting the position of the setting knob and if made the entry on operating line 72 which can be called up on operating line 166 TV1 resulting flow temperature setpoint at an out...

Page 36: ...s a minimum limit value refer to section 13 Function block Service functions and gen eral settings Composite outside temperature Setting knob room unit Heating curve Setting knob on controller Flow temperature setpoint TVw Setpoint on operating line 165 Parallel displacement of heating curve operating line 72 LPB SYNERGYR OZW30 Room setpoint or s 1 s 20 C Operating line 1 2 oder 3 1 s 2524B01e LPB...

Page 37: ...0 140 82 Minimum limitation of flow temperature C 0 140 83 Maximum rate of flow temperature increase C h 1 600 84 Excess temperature mixing valve heat exchanger C 10 0 50 85 Actuator running time s 120 30 873 86 P band of control Xp C 32 0 1 100 87 Integral action time of control Tn s 120 30 873 9 2 Limitations 9 2 1 Limitations of the flow temperature The following limitations can be set Maximum ...

Page 38: ...fed to the output relays and indicated by LEDs 9 4 Excess mixing valve temperature In interconnected plants an excess mixing valve temperature can be entered on the RVL470 This is a boost of the heating zone s flow temperature setpoint The higher setpoint is delivered to the heat generating equipment as the heat demand signal The excess mixing valve temperature can only be set on controllers drivi...

Page 39: ...own when there is no demand for heat and operating mode standby is selected setting 0 on operating line 91 With automatic shutdown the boiler will be shut down when there is no demand for heat irrespective of the selected operating mode setting 1 on operating line 91 Boiler operating modes when there is no demand for heat Boiler operating mode Controller s operat ing mode With manual shutdown With...

Page 40: ...running time The controller compares the actual value of the boiler temperature with the setpoint If the boiler temperature falls below the setpoint by half the switching differential the burner will be switched on If the boiler temperature exceeds the setpoint by half the switching differential the burner will be switched off TK 2522D16 ON OFF TKw SD 2 SD 2 SD TK TKw Switching differential Boiler...

Page 41: ...scertains for how long and by how much the flow temperature remains below w 0 5 SD It continually generates the release limit based on the time and the temperature If on completion of the minimum locking time the flow temperature lies below w 0 5 SD and if the release limit reaches the set maximum limit the second burner stage will be released and switched on The flow temperature starts rising Whe...

Page 42: ...mperature has crossed the minimum limit by the amount of the switching differ ential 10 4 4 Protective boiler startup If while the burner is running the boiler temperature falls below the minimum limit of the boiler temperature the differential minimum limit value minus actual value will be inte grated From this a critical locking signal will be generated and transmitted to the con nected loads Th...

Page 43: ...ver run for the set pump overrun time operating line 174 on the boiler temperature control ler generating at the same time a forced signal to all loads inside the controller on the data bus If the boiler temperature controller is located in segment 0 the forced signal will be delivered to all loads in all segments By contrast if the boiler temperature con troller is located in segment 1 14 the sig...

Page 44: ... pump overrun time and then stop 10 5 Operating mode of pump M1 The operating mode during protective boiler startup of the pump M1 must be selected on operating line 99 Circulating pump with no deactivation setting 0 The circulating pump runs when one of the consumers calls for heat and when burner stage 1 is switched on that is also during protective boiler startup Circulating pump with deactivat...

Page 45: ...ing valve Plant type no 5 Precontrol with boiler Minimum limitation of the boiler return temperature prevents boiler corrosion resulting from flue gas condensation 11 3 1 Acquisition of the measured values A temperature sensor with a sensing element LG Ni 1000 Ω at 0 C is required in the return With plant type no 1 the return temperature can also be delivered via LPB In interconnected plants only ...

Page 46: ...ature sensor connected Critical locking signal Setting operating line 101 no own return temp sensor connected Setting operating 101 no own return temp sensor connected 11 3 4 2 Local impact of limitation Controller 2 Plant type 1 Controller 3 Plant type 1 Return temperature signal Controller 2 limits return temp to 50 C LPB 2522B08e Setting operating line 101 50 C return temp sensor connected Sett...

Page 47: ...gral action time min 30 0 60 115 Maximum limitation of return temperature differential C 0 5 50 116 Minimum stroke limitation Ymin function min 6 1 20 12 2 Limitations 12 2 1 Secondary flow temperature Refer to section 9 2 1 Limitations of the flow temperature 12 2 2 Maximum limitation of primary return temperature 12 2 2 1 Purpose The primary return temperature uses maximum limitation to make cer...

Page 48: ...s section of the characteristic can be adjusted Maximum limitation of the return temperature has priority over maximum limitation of the flow temperature This function can be deactivated on operating line 101 If the return temperature is limited the display shows 12 2 3 Maximum limitation of the return temperature differential DRT limitation 12 2 3 1 Function For the differential of primary return...

Page 49: ...itation function can be matched to the type of plant 12 2 5 Minimum limitation of stroke suppression of hydraulic creep To avoid measurement errors in connection with heat metering due to extremely small flow rates the flow through the two port valve in the primary return can be limited to a minimum Ymin function If the valve is supposed to open below the minimum stroke position it will be fully c...

Page 50: ... Range 161 Outside temperature simulation C 50 50 162 Relay test 0 0 4 163 Sensor test Display function 164 Test of H contacts Display function 165 Flow temperature setpoint Display function 166 Resulting heating curve Display function 167 Outside temp for frost protection for the plant C 2 0 0 25 168 Flow temp setpoint for frost protection for the plant C 15 0 140 169 Device number 0 0 16 170 Seg...

Page 51: ... heating curve Position of the setting knob for room temperature readjustments Parallel displacement of heating curve setting on operating line 72 With demand compensated control plant types 4 5 and 6 the display shows Generation of flow temperature setpoint TAM composite outside temperature Knob on controller Flow temperature setpoint operating line 165 1 s Parallel displacement of heating curve ...

Page 52: ... s Slope TV1 Resulting flow temperature setpoint at an outside temperature of 15 C TV2 Resulting flow temperature setpoint at an outside temperature of 5 C TV S Flow temperature setpoint generated via the heating curve 13 3 Commissioning aids 13 3 1 Simulation of outside temperature To facilitate commissioning and fault tracing outside temperatures in the range of 50 to 50 C can be simulated This ...

Page 53: ...ering 0 5 Entry Display SET Display ACTUAL 0 No display Actual value of outside sensor at terminal B9 If the outside temperature is de livered via the data bus the dis play shows 1 Setpoint of flow boiler temperature With the plant types using a boiler the switch off point is displayed If there is no demand for heat the display shows Actual value of flow boiler tem perature sensor at terminal B1 2...

Page 54: ...rotection function 2522D12 BZ 167 TA ON OFF 0 5 C 0 5 C BZ167 Operating line 167 OFF Frost protection OFF TA Outside temperature ON Frost protection ON If the actual outside temperature falls below the limit value setting on operating line 167 minus 0 5 C the RVL470 will switch the circulating pump pump connected to terminal Q1 on and maintain the flow temperature at the selected minimum level The...

Page 55: ...te operation facility the controller s operating mode can be over ridden This is accomplished by bridging terminals H1 M It is possible to select the operating mode that shall apply when H1 M are bridged Setting Operating mode 0 Standby 1 AUTO 2 REDUCED 3 NORMAL As long as this function is activated the LED of the respective operating mode button flashes at low frequency approx 0 5 Hz The buttons ...

Page 56: ...n operating line 173 Am plification of locking signal to what degree they shall respond to a locking signal This gain of the locking signal is adjustable from 0 to 200 Setting Response 0 Locking signal will be ignored 100 Locking signal will be adopted 1 1 200 Locking signal will be doubled There are two types of locking signals Uncritical locking signals Critical locking signals The response of t...

Page 57: ... of day It must be entered on the RVL470 0 3 on operating line 178 0 autonomous clock in the RVL470 1 time of day from the bus clock slave with no remote readjustment 2 time of day from the bus clock slave with remote readjustment 3 time of day from the bus central clock master The effect of the individual entries is as follows Entry Effect Diagram 0 The time of day on the controller can be read j...

Page 58: ...ture source refer to data sheet N2030E 13 5 3 Addressing of devices Each device connected to the LPB requires an address This address is comprised of a device number a digit between 1 and 16 and a segment number a digit between 1 and 14 In an interconnected plant each address may be assigned only once If this is not ob served proper functioning of the entire plant cannot be ensured In that case a ...

Page 59: ...ting line 179 The display shows the cur rent setting as SET and the current bus power supply status as ACTUAL Display Bus power supply SET 0 Bus power supply is central no power supply via controller SET A Bus power supply is decentral via the controller ACTUAL 0 Presently no bus power supply available ACTUAL 1 Bus power supply presently available The word BUS appears on the display only when a bu...

Page 60: ...signal shall be passed Setting 0 heat demand signal to the heat source Setting 1 heat demand signal to the heating circuit With plant types 4 and 5 the heat demand signal is always passed to the ehat source On operating line 185 it is possible to select the setpoint to be used when H2 M is connected 0 constant flow boiler temperature setpoint the RVL470 maintains that fixed value 1 minimum flow bo...

Page 61: ...ing hours are displayed Whenever operating voltage is present the RVL470 counts the number of hours The maximum reading is limited to 500 000 hours 57 years 15 4 Software version The controller displays the software version in use 15 5 Identification number of room unit Based on the number shown in the display the type of room unit used can be identified The types of room units that can currently ...

Page 62: ...and one after the other 3 Now operating line 198 appears in the display The following locking choices are available 0 no locking 1 all settings are locked 2 only the settings required for the district heat parameters are locked operating lines 101 to 117 After locking all settings the following setting elements remain operative The buttons for selecting the operating lines The Info button No longe...

Page 63: ...eadjustment of room temperature For this purpose the QAW50 has three operating elements Operating mode button Economy button also called presence button Setting knob for room temperature readjustments 17 1 2 1 Overriding the operating mode From the QAW50 the operating mode of the RVL470 can be overridden This is made with the operating mode button and the economy button To enable the room unit to ...

Page 64: ...is as follows Operating mode QAW70 Operating mode RVL470 AUTO temporary overriding with economy button possible Continuously NORMAL heating or continuously REDUCED heating depending on the economy button Standby 17 1 3 2 Setting knob for room temperature readjustments With the setting knob of the QAW70 the room temperature setpoint of NORMAL heat ing can be readjusted by 3 C The setting of the roo...

Page 65: ...4 Overriding the QAW70 entries from the RVL470 If the RVL470 with a connected QAW70 is isolated from the mains network and then reconnected the following parameters on the QAW70 will be overwritten with the set tings made on the RVL470 Time of day and weekday Complete heating program Room temperature setpoint of NORMAL heating Room temperature setpoint of REDUCED heating This means that the RVL470...

Page 66: ...oom temperature sensor M1 Heating circuit pump B7 Return temperature sensor N1 Controller RVL469 B9 Outside sensor Y1 Heating circuit mixing valve 18 2 2 Operation with a partner Suitable partners The following L S controllers can be used as partners RVL470 RVL471 RVL472 RVL47 Each RVL469 requires one such partner The plant type selected on the partner is of no importance to the RVL469 Addressing ...

Page 67: ... partner is correctly identi fied e g RVL470 The RVL469 is switched to the active mode it op erates normally A new prompt is made after 10 min The identified partner is inad missible e g RVP300 The RVL469 changes to the passive mode A new prompt is made after 1 min The RVL469 gets no reply from the partner e g bus inter rupted The RVL469 maintains its current operational status and makes a new pro...

Page 68: ...ting circuit valve or burner stage 2 ON OFF in manual operation 5 Button for Open heating circuit valve in manual operation 6 Button for manual operation ON OFF 7 LEDs for Manual operation Valve opens 1st burner stage on Valve closes 2nd burner stage on Circulating pump running 8 Sealing facility for the cover 9 Info button for display of actual values 10 Display LCD 11 Slider for flow temperature...

Page 69: ...uttons available The required operating mode is activated by pressing the respective button Each button has an inte grated LED The currently active operating mode is indicated by the respective LED 19 1 2 2 Heating curve For the direct setting of the heating curve the little bar is used which has proved its worth over many years The slider on the left is used to set the required flow tempera ture ...

Page 70: ...nciple An operating line with an associated number is assigned to each parameter each actual value and each optional function The selection of an operating line and readjustment of the display are always made with a pair of buttons 19 1 3 2 Buttons To select and readjust setting values the procedure is the following Buttons Procedure Effekt Line selection Press button Selection of the next lower o...

Page 71: ...d user can access all analog operating elements This means that he can select the operating mode set the heating curve readjust the room temperature with the setting knob and activate manual operation Also he can access the setting level End user on operating lines 1 to 50 The heating engineer can access all operating elements and operating lines 19 2 Commissioning 19 2 1 Installation instructions...

Page 72: ...a dry room such as the boiler room but it can also be installed in a location which from a climatic point of view is unfavourable Its degree of protection is IP42 to EN 60529 and is therefore protected against dripping water The permissible ambient temperature is 0 50 C The RVL470 can be fitted as follows In a control panel on the inner wall or on a DIN mounting rail On a panel In the control pane...

Page 73: ...eover contacts and signal outputs 4 times B7 Return temperature sensor H1 Changeover contact Operating mode H2 Changeover contact for flow temperature setpoint B5 Room temperature sensor B71 Return temperature sensor primary circuit H4 Minimum stroke limitation Ymin contact H3 Contact for locking the district heat parameters The low voltage side carries one auxiliary terminal M 20 1 2 Mains voltag...

Page 74: ...the right Connections for plant types 2 and 5 boiler with a two stage burner A6 Room unit QAW50 or QAW70 B1 Flow or boiler temperature sensor B5 Room temperature sensor B7 Return temperature sensor primary circuit B71 Return temperature sensor secondary circuit B9 Outside sensor E1 Two stage burner F1 Thermal reset limit thermostat F2 Manual reset safety limit thermostat LPB Data bus M1 Heating ci...

Page 75: ...st always be mounted and wired first To ensure the orientation will be correct the upper side of both the base and the controller housing carry the marking TOP Both the top and the bottom side of the base has five knockout holes for cable entries and there are ten knockout holes in the floor The controller insert is placed in the base The controller insert has two fixing screws with rotating level...

Page 76: ...nt at AC 90 250 V 0 02 2 A cos ϕ 0 6 Nominal current ignition transformer max 1 A during max 30 s Switch on current ignition transformer max 10 A during max 10 ms Bus loading number E LPB 6 Backup of clock controller min 12 hours Perm cable lengths to the sensors and ex ternal contacts Copper cable 0 6 mm dia max 20 m Copper cable 1 0 mm2 max 80 m Copper cable 1 5 mm2 max 120 m Perm cable lengths ...

Page 77: ...r 33 controller insert 67 critical locking signals 48 D date 15 demand compensated control 28 differential of return temperature 40 digital operating elements 62 dimensions 67 display 61 display Heating operates 62 display functions 43 display of current setpoints 27 display of positioning commands 62 displays for manual operation 61 district heat connection 39 documentation 2 DRT 40 E ECO functio...

Page 78: ...f boiler temperature 32 minimum limitation of flow temperature 29 minimum limitation of stroke 41 mounting choices 64 N NORMAL heating 8 O operating elements 60 operating elements 60 operating instructions 61 operating line principle 62 operating modes 8 operation 60 operational level 9 operational status 9 optimization 20 optimum start control 23 optimum stop control 22 outside temperature 11 P p...

Page 79: ...time of day 49 suitable actuators 2 suitable room units 2 suitable sensors 1 summertime 48 suppression of hydraulic creep 41 switching times 13 T terminate the relay test 45 terminate the simulation 44 three position control 29 30 time of day 15 two position control 32 two position controller 31 U uncritical locking signals 48 W weather compensated control 28 winter summertime changeover 48 winter...

Page 80: ...g valve heat exchanger 84 29 F Faults 50 15 Flow alarm 171 42 Flow temp setpoint for frost protection for the plant 168 42 Flow temperature setpoint 165 42 Function when terminals H2 M are linked 184 52 G Gain factor for room temperature influence 70 18 H 1st heating period start of NORMAL heating 5 13 1st heating period start of REDUCED heating 6 13 2nd heating period start of NORMAL heating 7 13...

Page 81: ...of flow temperature 82 29 Minimum limitation of return temperature 101 37 Minimum stroke limitation Ymin function 116 39 O Operating mode of boiler 91 31 Operating mode pump M1 99 31 Operating mode when terminals H1 M are bridged 172 42 Outside temp for frost protection for the plant 167 42 Outside temperature simulation 161 42 Outside temperature source 180 42 P Parallel displacement of heating c...

Page 82: ...list of operating lines Landis Staefa Division T Test of H contacts 164 42 Time of day 38 15 Type of heating curve adjustment 73 18 Type of optimization 66 18 W Waiting time second burner stage 98 31 Weekday for input heating program 4 13 Weekday 39 15 Winter summertime changeover 176 42 Y Year 41 15 ...

Page 83: ... version 2 0 Section Change 4 1 1 2 Setting for automatic function on operating line 65 corrected A 8 3 New section settings and displays on operating line 65 outside temperature source 13 5 3 Table modified resulting from function changes on the controller addresses G 1 and S 0 now permitted with all plant types 17 1 3 3 Name of operating line 178 corrected clock operation ...

Page 84: ...CE1P2522E 30 03 2000 Basic Documentation RVL470 Siemens Building Technologies INDEX 8 Corrigenda Landis Staefa Division ...

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