Siemens RVD230 Operator's manual

Edition 3.0
Controller series D
CE1P2383en
27.05.2004
Siemens Building Technologies
HVAC Products
RVD230
District Heating and Domestic Hot Water Controller
Basic Documentation

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HVAC Products 27.05.2004
Siemens Building Technologies AG
HVAC Products
Gubelstrasse 22
CH 6301 Zug
Tel. [phone]
Fax [phone]
www.landisstaefa.com
© 2000 Siemens Building Technologies AG
Subject to change

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Contents
1Summary ....................................................................................................... 13
1.1 Brief description and key features .................................................................13
1.2 Type summary............................................................................................... 13
1.3 Equipment combinations ............................................................................... 13
1.3.1 Suitable sensors ............................................................................................ 13
1.3.2 Suitable room units........................................................................................ 14
1.3.3 Suitable valve actuators ................................................................................ 14
1.3.4 Communication.............................................................................................. 14
1.3.5 Documentation .............................................................................................. 14
2Use ................................................................................................................ 15
2.1 Types of plant ................................................................................................ 15
2.2 Types of houses and buildings ...................................................................... 15
2.3 Types of heating systems.............................................................................. 15
2.4 Heating circuit functions ................................................................................ 15
2.5 D.h.w. functions ............................................................................................. 16
2.6 Auxiliary functions.......................................................................................... 16
3Fundamentals................................................................................................ 17
3.1 Key technical features ................................................................................... 17
3.1.1 Function blocks.............................................................................................. 17
3.1.2 Plant types..................................................................................................... 17
3.2 Operating modes ........................................................................................... 23
3.2.1 Heating circuit control .................................................................................... 23
3.2.2 D.h.w. heating................................................................................................ 23
3.2.3 Manual operation........................................................................................... 23
4Acquisition of measured values..................................................................... 24
4.1 General.......................................................................................................... 24
4.2 Flow temperature (B1, B12) .......................................................................... 24
4.2.1 Types of sensors ...........................................................................................24
4.2.2 Handling faults............................................................................................... 24
4.3 Outside temperature (B9) .............................................................................. 24
4.3.1 Types of sensors ...........................................................................................24
4.3.2 Handling faults............................................................................................... 24
4.4 Room temperature (A6).................................................................................25
4.4.1 Types of sensors ...........................................................................................25
4.4.2 Handling faults............................................................................................... 25
4.4.3 Room model .................................................................................................. 25
4.5 D.h.w. flow temperature (B3 and B12) .......................................................... 25

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4.5.1 Measuring variable.........................................................................................25
4.5.2 Types of sensors............................................................................................25
4.5.3 Handling faults ...............................................................................................26
4.6 D.h.w. storage tank temperature (B31)..........................................................26
4.6.1 Measuring variable.........................................................................................26
4.6.2 Types of sensors............................................................................................26
4.6.3 Handling faults ...............................................................................................26
4.7 D.h.w. storage tank or return temperature (B32) ...........................................27
4.7.1 Measuring variable.........................................................................................27
4.7.2 Types of sensors............................................................................................27
4.7.3 Handling faults ...............................................................................................27
4.8 Primary return temperature (B7, B71 and B72)...............................................27
4.8.1 Measurement .................................................................................................27
4.8.2 Types of sensors............................................................................................27
4.8.3 Handling faults ...............................................................................................27
4.9 Secondary return temperature (B7 and B71).................................................28
4.9.1 Measurement .................................................................................................28
4.9.2 Types of sensors............................................................................................28
4.9.3 Handling faults ...............................................................................................28
5Function block Space heating........................................................................29
5.1 Operating lines...............................................................................................29
5.2 Settings and displays .....................................................................................29
5.3 Heating program ............................................................................................30
6Function block Clock settings ........................................................................31
6.1 Operating lines...............................................................................................31
6.2 Entries............................................................................................................31
7Function block End-user d.h.w.......................................................................32
7.1 Operating lines...............................................................................................32
7.2 D.h.w. heating program..................................................................................32
7.3 Adjustment of setpoints..................................................................................32
8Function block Display of actual sensor values .............................................33
8.1 Operating lines...............................................................................................33
8.2 Displays .........................................................................................................33
9Function block Holiday settings .....................................................................34
9.1 Operating lines...............................................................................................34
9.2 Holiday program.............................................................................................34
10 Function block Indication of errors .................................................................35
10.1 Operating line.................................................................................................35

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10.2 Indication of errors......................................................................................... 35
11 Function block Plant configuration................................................................. 36
11.1 Operating lines .............................................................................................. 36
11.2 Parameters to be set .....................................................................................36
11.2.1 Plant type....................................................................................................... 36
11.2.2 Input B71 / U1................................................................................................ 36
11.2.3 Circulating pump............................................................................................ 37
11.2.4 Input H5 ......................................................................................................... 37
11.2.5 Control of variable speed pump..................................................................... 37
12 Function block Space heating .......................................................................41
12.1 Operating lines .............................................................................................. 41
12.2 Compensating variables ................................................................................ 41
12.2.1 Outside temperature...................................................................................... 41
12.2.2 Room temperature......................................................................................... 42
12.3 Heating curve ................................................................................................ 43
12.4 Generation of setpoint ...................................................................................44
12.4.1 Display of setpoint ......................................................................................... 44
12.4.2 Setpoint of weather-compensated control ..................................................... 44
12.4.3 Setpoint of room-compensated control.......................................................... 45
12.4.4 Setpoint of weather-compensated control with room influence ..................... 45
12.5 Heating circuit control .................................................................................... 46
12.5.1 Weather-compensated control ...................................................................... 46
12.5.2 Room-compensated control .......................................................................... 46
12.5.3 Weather-compensated control with room influence ......................................46
12.6 Automatic ECO function ................................................................................ 47
12.6.1 Fundamentals................................................................................................ 47
12.6.2 Compensating variables and auxiliary variables ........................................... 47
12.6.3 Heating limit................................................................................................... 48
12.6.4 Mode of operation of ECO function 1 ............................................................ 48
12.6.5 Mode of operation of ECO function 2 ............................................................ 48
12.7 Pump overrun ................................................................................................ 48
12.8 Maximum limitation of the room temperature ................................................48
12.9 Optimization................................................................................................... 49
12.9.1 Definition and purpose................................................................................... 49
12.9.2 Fundamentals................................................................................................ 49
12.9.3 Process.......................................................................................................... 50
12.9.4 Room model temperature.............................................................................. 50
12.9.5 Optimum stop control .................................................................................... 51
12.9.6 Quick setback ................................................................................................ 51
12.9.7 Optimum start control ....................................................................................51
12.9.8 Maximum rate of flow temperature increase ................................................. 52

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12.10 Frost protection for the building .....................................................................52
12.10.1 General ..........................................................................................................52
12.10.2 Mode of operation with room sensor..............................................................52
12.10.3 Mode of operation without room sensor.........................................................53
12.11 Protective functions........................................................................................53
12.11.1 Pump kick ......................................................................................................53
12.11.2 Valve kick.......................................................................................................53
12.11.3 Shutdown of pump .........................................................................................53
13 Precontrol.......................................................................................................54
13.1 General ..........................................................................................................54
13.2 Heat demand .................................................................................................54
13.3 Control ...........................................................................................................54
13.4 Pump Q1........................................................................................................54
13.5 Pump and mixing valve overrun.....................................................................54
13.6 Frost protection ..............................................................................................55
13.7 Other functions...............................................................................................55
13.8 Room unit.......................................................................................................56
14 Function block Valve actuator heat converter / primary controller .................57
14.1 Operating lines...............................................................................................57
14.2 Mode of operation ..........................................................................................57
14.3 Control process..............................................................................................57
14.4 Maximum limitation of the flow temperature ..................................................57
14.5 Minimum limitation of the flow temperature ...................................................58
14.6 External heat demand at input H5 .................................................................58
14.7 External heat demand at input U1 .................................................................58
15 Function block Valve actuator heating circuit.................................................60
15.1 Operating lines...............................................................................................60
15.2 Mode of operation ..........................................................................................60
15.3 Control process..............................................................................................60
15.4 Maximum limitation of the flow temperature ..................................................60
15.5 Minimum limitation of the flow temperature ...................................................61
16 Function block D.h.w. heating........................................................................62
16.1 Operating lines...............................................................................................62
16.2 Release of d.h.w. heating ..............................................................................62
16.3 Control of the circulating pump ......................................................................63
16.4 Switching differential of d.h.w. control............................................................63
16.5 Legionella function .........................................................................................63
16.6 Priority of d.h.w. heating ................................................................................63
16.6.1 General ..........................................................................................................63

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16.6.2 Absolute priority............................................................................................. 64
16.6.3 Shifting priority............................................................................................... 64
16.6.4 No priority ...................................................................................................... 65
16.7 Pump overrun ................................................................................................ 65
16.7.1 General.......................................................................................................... 65
16.7.2 Intermediate circuit pump ..............................................................................65
16.7.3 Storage tank charging pump ......................................................................... 65
16.8 Frost protection for d.h.w............................................................................... 66
16.9 Switching d.h.w. heating off........................................................................... 66
17 D.h.w. heating................................................................................................ 67
17.1 D.h.w. heating with storage tanks.................................................................. 67
17.1.1 General.......................................................................................................... 67
17.1.2 Maximum charging time ................................................................................ 67
17.1.3 Manual storage tank charging .......................................................................67
17.1.4 Forced charging............................................................................................. 67
17.1.5 Protection against discharging ......................................................................68
17.1.6 D.h.w. heating with diverting valve ................................................................ 68
17.1.7 Protection against overtemperatures............................................................. 68
17.1.8 Storage tank with electric immersion heater.................................................. 68
17.2 D.h.w. heating with stratification storage tank.................................................69
17.2.1 General.......................................................................................................... 69
17.2.2 D.h.w. heating with one flow sensor .............................................................. 69
17.2.3 D.h.w. heating with 2 flow sensors ................................................................ 69
17.2.4 Feeding the circulating water into the heat exchanger .................................. 70
17.3 Direct d.h.w. heating...................................................................................... 70
17.3.1 General.......................................................................................................... 70
17.3.2 D.h.w. heating................................................................................................ 70
17.3.3 Protection against cooling down.................................................................... 70
17.3.4 Siting the sensors .......................................................................................... 71
17.3.5 Flow switch .................................................................................................... 71
17.3.6 Compensation of heat losses through control ............................................... 72
17.3.7 Cold water sensor.......................................................................................... 73
17.3.8 Plant type 8–4................................................................................................ 73
18 Function block Extra legionella functions ...................................................... 74
18.1 Operating lines .............................................................................................. 74
18.1.1 Legionella function......................................................................................... 74
18.1.2 Setpoint ......................................................................................................... 74
18.1.3 Time............................................................................................................... 74
18.1.4 Dwelling time ................................................................................................. 74
18.1.5 Operation of circulating pump........................................................................ 75
18.1.6 Maximum limitation of the return temperature ............................................... 75

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18.2 Mode of operation ..........................................................................................75
19 Function block Valve actuator d.h.w. .............................................................77
19.1 Operating lines...............................................................................................77
19.2 Mode of operation ..........................................................................................77
19.3 Control process..............................................................................................77
19.4 Setpoint boost ................................................................................................78
19.4.1 Charging boost...............................................................................................78
19.4.2 Flow temperature boost .................................................................................78
19.5 Maximum setpoint of the d.h.w. temperature.................................................78
19.6 D.h.w. heating with 2 storage tank sensors ...................................................78
19.7 Adjustable load limit .......................................................................................79
19.7.1 Adjustment to the time of year .......................................................................79
19.7.2 Load limit........................................................................................................79
19.7.3 Child-proofing.................................................................................................79
20 Function block Assignment of d.h.w. heating.................................................80
20.1 Operating line.................................................................................................80
20.2 Assignment of d.h.w. heating.........................................................................80
21 Function block LPB parameters.....................................................................81
21.1 Operating lines...............................................................................................81
21.2 LPB parameters .............................................................................................81
21.2.1 Addressing the devices..................................................................................81
21.2.2 Source of time of day .....................................................................................81
21.2.3 Bus power supply...........................................................................................82
21.2.4 Outside temperature source ..........................................................................82
22 Locking signals ..............................................................................................83
22.1 Fundamentals ................................................................................................83
22.2 Critical locking signals....................................................................................83
22.3 Uncritical locking signals................................................................................84
22.3.1 General ..........................................................................................................84
22.3.2 Controller-internal uncritical locking signals...................................................84
22.3.3 Uncritical locking signals from the data bus...................................................84
23 Function block Device functions ....................................................................85
23.1 Operating lines...............................................................................................85
23.2 Actuator pulse lock.........................................................................................85
23.3 Frost protection for the plant ..........................................................................85
23.3.1 Principle .........................................................................................................85
23.3.2 Mode of operation with outside sensor ..........................................................85
23.3.3 Mode of operation without outside sensor .....................................................86
23.3.4 Frost protection for the heating circuit flow ....................................................86

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23.4 Flow alarm ..................................................................................................... 86
23.4.1 Heating circuit and d.h.w. circuit with storage tanks...................................... 86
23.4.2 Direct d.h.w. heating via heat exchanger ......................................................87
23.5 Winter- / summertime changeover ................................................................ 88
23.6 Pump kick ...................................................................................................... 88
24 Function block M-bus parameters .................................................................89
24.1 Operating lines .............................................................................................. 89
24.2 General.......................................................................................................... 89
24.3 Addressing and identification......................................................................... 89
24.4 Baud rate ....................................................................................................... 89
24.5 Load management......................................................................................... 89
24.5.1 Load management of d.h.w. .......................................................................... 89
24.5.2 Load management of the heating system ..................................................... 90
24.5.3 Resetting the load control signals.................................................................. 90
24.5.4 Use on the LPB .............................................................................................90
24.5.5 Resolution of M-bus signals ..........................................................................90
25 Function block PPS parameters .................................................................... 91
25.1 Operating line ................................................................................................ 91
25.2 Function......................................................................................................... 91
26 Function block Test and display .................................................................... 92
26.1 Operating lines .............................................................................................. 92
26.2 Sensor test .................................................................................................... 92
26.3 Setpoint test................................................................................................... 92
26.4 Relay test....................................................................................................... 93
26.5 Display of pump speed .................................................................................. 93
26.6 Display of digital inputs.................................................................................. 93
26.7 Limitations ..................................................................................................... 94
26.8 Software version............................................................................................ 94
27 Function block DRT and maximum limitation of the return temperature ....... 95
27.1 Operating lines .............................................................................................. 95
27.2 Maximum limitation of the primary return temperature .................................. 95
27.2.1 General.......................................................................................................... 95
27.2.2 Maximum limitation in heating mode ............................................................. 96
27.2.3 Maximum limitation in d.h.w. heating mode................................................... 97
27.3 Maximum limitation of the secondary return temperature ............................. 97
27.4 Maximum limitation of the temperature differential (DRT function) ...............98
27.4.1 Mode of operation.......................................................................................... 98
27.4.2 Purpose ......................................................................................................... 98
27.5 Integral action time of the limitation functions................................................ 99

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28 Function block Miscellaneous ......................................................................100
28.1 Operating lines.............................................................................................100
28.2 Limitation function at contact H5..................................................................100
28.3 Suppression of hydraulic creep....................................................................101
28.3.1 Mode of operation ........................................................................................101
28.3.2 Mode of operation ........................................................................................101
28.4 Raising the reduced room temperature setpoint..........................................101
29 Function block Operation locking functions .................................................103
29.1 Operating lines.............................................................................................103
29.2 Locking settings on the software side ..........................................................103
29.3 Locking of setting level ”Locking functions” on the hardware side...............103
30 Combination with PPS devices ....................................................................104
30.1 General ........................................................................................................104
30.2 Combination with room unit QAW50............................................................104
30.2.1 General ........................................................................................................104
30.2.2 Overriding the operating mode ....................................................................104
30.2.3 Knob for room temperature readjustments ..................................................105
30.2.4 Controller with operation lock.......................................................................105
30.3 Combination with room unit QAW70............................................................105
30.3.1 General ........................................................................................................105
30.3.2 Overriding the operating mode ....................................................................106
30.3.3 Knob for readjusting the room temperature .................................................106
30.3.4 Effects of the individual QAW70 operating lines on the RVD230 ................106
30.3.5 Controller with operation lock.......................................................................107
30.3.6 Entry of holiday periods ...............................................................................107
30.4 Room temperature sensor QAA10...............................................................107
31 Manual operation .........................................................................................108
32 Handling.......................................................................................................109
32.1 Operation .....................................................................................................109
32.1.1 General ........................................................................................................109
32.1.2 Analog operating elements ..........................................................................110
32.1.3 Digital operating elements ...........................................................................110
32.1.4 Controller in ”nonoperated state" .................................................................111
32.1.5 Safety concept .............................................................................................111
32.1.6 Setting levels and access rights...................................................................111
32.2 Commissioning ............................................................................................111
32.2.1 Installation instructions.................................................................................111
32.2.2 Operating lines.............................................................................................112
32.3 Installation....................................................................................................112

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32.3.1 Mounting location ........................................................................................ 112
32.3.2 Mounting choices......................................................................................... 112
32.3.3 Electrical installation .................................................................................... 112
33 Engineering ................................................................................................. 113
33.1 Connection terminals................................................................................... 113
33.2 Relays.......................................................................................................... 114
33.3 PWM output................................................................................................. 114
33.4 Lightning protection in M-bus plants............................................................ 114
33.5 Connection diagrams................................................................................... 115
33.5.1 Low-voltage side.......................................................................................... 115
33.5.2 Mains voltage side....................................................................................... 115
34 Mechanical design....................................................................................... 116
34.1 Basic design ................................................................................................ 116
34.2 Dimensions.................................................................................................. 116
35 Technical data ............................................................................................. 117

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HVAC Products Glossary 27.05.2004
Glossary
In this Basic Documentation, the following key terms are used:
Term Explanation
Heat converter Heat exchanger that, on the primary side, is con-
nected to the district heat network and that, on the
secondary side, delivers the hot water to a pre-
controlled or common flow. The flow then supplies
the hot water to several consumers that are con-
trolled by zone controllers, etc.
Heat exchanger Heat exchanger that delivers heat directly to the
consumers (e.g. space heating, d.h.w. heating,
etc.).
Term Explanation
Storage tank charging pump Pump that supplies tap water via the heat ex-
changer into the storage tank where it is made
available as d.h.w.
System pump Pump that supplies water from the heat source
(heat converter) to the consumers. The pump can
be located either in the flow or the return.
Intermediate circuit pump Pump that supplies water as a heat conducting
medium. The water transfers its heat via a coil or
storage tank to the d.h.w. without getting in direct
contact with it.
Term Explanation
Coil type storage tank
2383S33
Instantaneous d.h.w. heating (via
heat exchanger)
2383S34
Stratification storage tank
2383S35
Storage tanks Common term used for coil type and stratification
storage tanks.
Heat source, heat
generation
Pumps
D.h.w. heating

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1 Summary
1.1 Brief description and key features
• The RVD230 is a multifunctional heating controller for controlling the flow temperature
of the heating circuit and of d.h.w. heating
• The controller’s field of use covers exclusively plants with district heat connections. It
has been specially designed for small to medium-size residential and nonresidential
buildings
• The RVD230 has 7 heating circuit types and 11 d.h.w. plant types preprogrammed. By
combining the different plants, it is possible to configure 28 plant types. The configura-
tion activates all functions and settings required for the respective type of plant
• In terms of control, the RVD230 is designed as a flow temperature controller. Control
can be effected in 1 of 5 different ways:
−Weather-compensated control of the heating circuit flow
−Weather- and room temperature-compensated control of the heating circuit flow
−Room temperature-compensated control of the heating circuit flow
−Demand-dependent control of the common flow
−Demand-compensated precontrol
• In terms of d.h.w. heating, the RVD230 is designed for the following types of applica-
tions:
−D.h.w. heating with coil type storage tanks
−D.h.w. heating with stratification storage tanks
−Direct d.h.w. heating via heat exchanger
−Common or separate heat exchangers for the heating circuit and d.h.w. heating
−2-stage separation of the d.h.w. from district heating
• The RVD230 is suited for the control of 2-port and 3-port valves as well as diverting
valves and pumps, including variable speed pumps
• For the direct adjustment of the nominal room temperature setpoint, a setting knob is
available. All the other parameters are set digitally based on the operating line principle
• Key design features: Operating voltage AC 230 V, CE conformity, overall dimensions
to DIN 43700 (96 × 144 mm)
1.2 Type summary
The RVD230 is a compact controller and requires no accessories such as inserts, plug-
in modules, etc. The controller is supplied complete with base.
1.3 Equipment combinations
1.3.1 Suitable sensors
• For the flow temperatures:
Suitable are all types of temperature sensors that use a sensing element LG-Ni 1000.
The following types are presently available:
−Strap-on temperature sensor QAD22
−Immersion temperature sensors QAE2…
• For the control of the d.h.w. flow temperature (B3), it is also possible to use commer-
cially available sensors with Pt 500 sensing elements
• For the return temperatures:
The following types of temperature sensors are presently available:
−Strap-on temperature sensor QAD22
−Immersion temperature sensors QAE2…

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For the control of the primary return temperatures (B7, B71, B72), it is also possible to
use commercially available sensors with Pt 500 sensing elements.
• For the outside temperature:
−Outside sensor QAC22 (sensing element LG-Ni 1000)
−Outside sensor QAC32 (sensing element NTC 575)
• For the room temperature:
PPS-compatible sensors must be used. The following types are available:
−Room temperature sensor QAA10
• For the storage tank temperature:
−Cable temperature sensor QAP21.3
−Immersion temperature sensors QAE2…
1.3.2 Suitable room units
• Room unit QAW50
• Room unit QAW70
1.3.3 Suitable valve actuators
All types of actuators from Siemens with the following features can be used:
• Electric or electrohydraulic actuators with a running time of 10…900 seconds
• 3-position control
• Operating voltage AC 24… 230 V
1.3.4 Communication
Communication with other devices, controllers, etc., is possible:
• Via LPB, e.g. assignment of d.h.w., reception of radio signal, master / slave assign-
ments for the time switch, reception of heat demand signals (RVD230 used as a pri-
mary controller, reception of outside temperature signal)
• Via M-bus, e.g. reading setpoints and actual values, or output control for space heating
1.3.5 Documentation
Type of documentation Classification number
Data Sheet RVD230 N2383
Operating Instructions RVD230 B2381
Installation Instructions RVD230 G2381
Data Sheet QAW50 N1635
Data Sheet QAW70 N1637
Installation Instructions QAW70 G1637
Data Sheet QAA10 N1725
Data Sheet "LPB Basic System Data" N2030
Data Sheet "LPB Basic Engineering Data" N2032
Basic Documentation M-bus P5361

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2 Use
2.1 Types of plant
Basically, the RVD230 is suited for the control of all types of heating plants in houses or
buildings
• that are connected to a district heat network
• in which the flow temperature of the heating circuit is controlled either weather- or room
temperature-compensated
• in which the control of d.h.w. heating can be integrated as an option
2.2 Types of houses and buildings
Basically, the RVD230 is suited for use in all types of houses and buildings in which the
heating is controlled either weather- or room temperature-compensated. It has been
designed especially for:
• Single-family homes
• Multifamily houses
• Small to medium-size nonresidential buildings
2.3 Types of heating systems
The RVD230 is suited for use with all standard heating systems, such as:
• Radiators
• Convectors
• Underfloor heating systems
• Ceiling heating systems
• Radiant panels
2.4 Heating circuit functions
The RVD230 is used if 1 or several of the following heating circuit functions is / are
required:
• Weather- or room-compensated or weather- and room-compensated flow temperature
control
• Flow temperature control via a modulating seat or slipper valve
• Common or separate heat exchangers for the heating circuit and for d.h.w. heating
• Optimum heating up and setback of the room temperature by learning the switch-on
and switch-off time
• Quick setback with and without room temperature sensor
• ECO function: Demand-dependent switching of the heating system as a function of the
outside temperature
• 7-day program for the heating periods with a maximum of 3 heating periods per day
and varying on times
• Frost protection for the plant and the house or building
• Yearly clock
• Holiday programs
• Independent time programs for space heating and d.h.w.
• Maximum rate of flow temperature increase
• Minimum and maximum limitation of the flow temperature
• Maximum limitation of the room temperature
• Flow alarm

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• Heat demand signal can be received
• Differential temperature limitation (DRT function)
• Maximum limitation of the primary return temperature, can be adjusted with 4 variables
• Limitation of power or volumetric flow by pulses
• Suppression of hydraulic creep in the primary circuit
• Weather-compensated raising of the reduced room temperature setpoint
• Remote operation via room unit
2.5 D.h.w. functions
The RVD230 is used if one or several of the following d.h.w. functions is / are required:
• Common or separate heat exchangers for the heating circuit and for d.h.w. heating
• D.h.w. heating with a coil type storage tank, with charging pump or diverting valve
• Direct d.h.w. heating via heat exchanger
• D.h.w. heating with coil type or stratification storage tanks, with or without mixing valve
in the intermediate circuit
• Continuous d.h.w. heating with mixing valve
• Flow switch with an adjustable load limit, child-proofing and adaptation to the season
• Own time program for the release of d.h.w. heating
• Optional assignment of the circulating pump to the heating circuit or the d.h.w. circuit
time program
• Protection against cooling down with d.h.w. heating via heat exchanger
• Legionella protection
• Forced d.h.w. charging
• Frost protection for d.h.w.
• Selectable priority for d.h.w. heating : Absolute, shifting or parallel
• Manual d.h.w. charging outside the time program
• Maximum limitation of the d.h.w. return temperature
• Flow alarm
2.6 Auxiliary functions
The RVD230 is used if 1 or several of the following functions is / are required:
• Demand-dependent control of the common flow
• Demand-dependent precontrol
• Pump kick, periodic pump run
• Pump overrun
• Valve kick, periodic activation of all actuators on the secondary side
• PWM output, control of a variable speed pump
• Display of parameters, actual values, operating states and error messages
• Alarm input
• Analog input DC 0…10 V (display, external heat demand)
• Digital input (heat meter, external heat demand, etc.)
• Flow switch (including child-proofing and adaptation to the season)
• Communication via M-bus
• Communication via LPB (Local Process Bus)
• Service functions
• Pulse lock for actuators
• Sensor test
• Relay test
• Display of setpoint
• Display of all active limitations
• Locking of settings
• Connection of sensors for display only

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3 Fundamentals
3.1 Key technical features
The RVD230 offers 2 key technical features:
• The controller has 28 different plant types preprogrammed.
Subsection 3.1.2 shows the relevant plant diagrams.
• The settings are assigned to different setting levels each of which contains a number
of function blocks with the relevant settings
3.1.1 Function blocks
Setting levels Function block
Space heating
Clock setting
End-user d.h.w. heating
Display of actual sensor values
Holiday settings
End-user
Indication of errors
Plant configuration
Space heating
Actuator heat exchanger
Actuator heating circuit
D.h.w. heating
D.h.w. actuator
Assignment of d.h.w.
Extra legionella functions
LPB parameter
Control functions
M-bus parameter
PPS parameter
Heating engineer
Test and display
DRT and limitation of the return temperature
Various functions
Locking functions
Locking functions
For each function block, the required settings are available in the form of operating
lines. On the following pages, a description of the individual functions per block and line
is given.
3.1.2 Plant types
The RVD230 has 28 plant types preprogrammed, whereby the functions required for
each type of plant are ready assigned. When commissioning the installation, the rele-
vant plant type must be selected.
Each plant type is comprised of a heating circuit and a d.h.w. circuit. When making use
of all possible or practical combinations, the above mentioned total of 28 plant types
are available.
With the number of preprogrammed plant types available, practically all types of heat-
ing plants with district heat connection and own d.h.w. heating can be handled and
controlled.
Note on the plant diagrams: Elements shown in broken lines (sensors B7 and B71,
circulating pump and flow switch) are optional components.

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Type ref. Diagram Legend
2383S01
H5
B3
Q3
B32B72
Y5
B9
B3 D.h.w. flow sensor
B32 Return sensor d.h.w.
B72 Primary return sensor
B9 Outside sensor (optional, display only)
H5 Flow switch (optional)
Q3 Circulating pump (optional)
Y5 2-port valve primary return
Y5
B9
B3
B32
Q3
K6
2383S02
B31
B72 a)
b)
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B72 Primary return sensor
B9 Outside sensor (optional, display only)
K6 Circulating pump (optional)
Q3 Storage tank charging pump
Y5 2-port valve primary return
B31
K6
B72
B3Q3
B9
2383 S03
Y5
B32
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B72 Primary return sensor
B9 Outside sensor (optional, display only)
K6 Circulating pump (optional)
Q3 D.h.w. intermediate circuit pump
Y5 2-port valve d.h.w. primary return
Y5
B9 B12
B32
Q4
K6
2383S04
B31
B72 a)
b)
B3
Q3
B12 D.h.w. flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B72 Primary return sensor
B9 Outside sensor (optional, display only)
K6 Circulating pump (optional)
Q3 D.h.w. intermediate circuit pump
Q4 Storage tank charging pump
Y5 2-port valve d.h.w. primary return
Y1 B7 B71
B1
Q1
B9 A6
2383S05
A6 Room unit
B1 Flow sensor heating circuit
B7 Primary return sensor*
B71 Secondary return sensor
B9 Outside sensor
Q1 Heating circuit pump
Y1 2-port valve primary return
Y1 B7 B71
B1
Q1
B9 A6
B31
K6
B72
2383S06
Y5
B32
A6 Room unit
B1 Flow sensor heating circuit
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Primary return sensor heating circuit*
B71 Secondary return sensor heating circuit
B72 Primary return sensor d.h.w.
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Y1 2-port valve heating circuit primary return
Y5 2-port valve d.h.w. primary return
B1
Y1
Y5
B7 Q1
A6
B9
2383S07
B32
B3
H5B72
Q3
B71
A6 Room unit
B1 Flow sensor heating circuit
B3 D.h.w. flow sensor
B32 Return sensor d.h.w. circuit
B7 Primary return sensor heating circuit*
B71 Secondary return sensor heating circuit
B72 Primary return sensor d.h.w. circuit
B9 Outside sensor
H5 Flow switch (optional)
Q1 Heating circuit pump
Q3 Circulating pump (optional)
Y1 2-port valve heating circuit primary return
Y5 2-port valve d.h.w. primary return
a) Circulating pump feeding water into the heat exchanger’s return
b) Circulating pump feeding water into the storage tank
* Suppression of hydraulic creep

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B1
Y1
Y5
B7 Q1
A6
B9
B3
B32
Q3
B71
K6
2383S09
B72
B31
b)
a)
A6 Room unit
B1 Flow sensor heating circuit
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Primary return sensor heating circuit*
B71 Secondary return sensor heating circuit
B72 Primary return sensor d.h.w. circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 Storage tank charging pump
Y1 2-port valve heating circuit primary return
Y5 2-port valve d.h.w. primary return
Y1 B7 B71
B1
Q1
B9 A6
B31
K6
B72
2383S10
Y5
B32
B3Q3
A6 Room unit
B1 Flow sensor heating circuit
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Primary return sensor heating circuit*
B71 Secondary return sensor heating circuit
B72 Primary return sensor d.h.w. circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Y1 2-port valve heating circuit primary return
Y5 2-port valve d.h.w. primary return
B1
Y1
Y5
B7 Q1
A6
B9
B12
B32
Q4
B71
K6
2383S11
B72
B31
b)
a)
B3Q3
A6 Room unit
B1 Flow sensor heating circuit
B12 D.h.w. flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Primary return sensor heating circuit*
B71 Secondary return sensor heating circuit
B72 Primary return sensor d.h.w. circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Q4 Storage tank charging pump
Y1 2-port valve heating circuit primary return
Y5 2-port valve d.h.w. primary return
A6
B9
B71
Q1
K
6
Q3
Y1 B7
B1 B31
2383S12
B72
B32
A6 Room unit
B1 Common flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B72 Return sensor d.h.w. circuit
B9 Outside sensor
Q1 Heating circuit pump
Q3 D.h.w. storage tank charging pump
Y1 2-port valve common return
A6
B9
B71
Q1
K
6
Q3
Y1 B7
B1 B31
2383S13
B72
B32
Y5 B3
A6 Room unit
B1 Common flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B72 Return sensor d.h.w. circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. storage tank charging pump
Y1 2-port valve common return
Y5 Mixing valve d.h.w. circuit
a) Circulating pump feeding water into the heat exchanger’s return
b) Circulating pump feeding water into the storage tank
* Suppression of hydraulic creep

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Y1 B7
B1
Q1
A6
B9
B3
Q3
B71
2383S14
B32
K6
B31
Q4
A6 Room unit
B1 Common flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Q4 Storage tank charging pump
Y1 2-port valve common return
Y1 B7
B1
Q1
A6
B9
B12
Q3
Y5
B71
2383S15
B32
K6
B72
B3
Q4
B31
b)
a)
A6 Room unit
B1 Common flow sensor
B12 D.h.w. flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B72 Return sensor d.h.w. circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Q4 Storage tank charging pump
Y1 2-port valve common return
Y5 Mixing valve d.h.w. circuit
A6
B9
B71
K6
Y1 B7
B1 B31
2383S16
B32
Q3
Q1
A6 Room unit
B1 Common flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B9 Outside sensor
K6 Circulating pump (optional)
Q1 System pump
Q3 Diverting valve
Y1 2-port valve common return
Y1 B7
B1 Q1
A6
B9 B3
B71
2383S17
B32
K6
B31
Q4
Q3
A6 Room unit
B1 Common flow sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return sensor
B9 Outside sensor
K6 Circulating pump (optional)
Q1 System pump
Q3 Diverting valve
Q4 Storage tank charging pump
Y1 2-port valve common return
A6
B9
B12
Q1
Q3
Y1 B7
B1
Y5
B31
2383S18
B32
B72
K6
B71 B71
A6 Room unit
B1 Common flow sensor
B12 Flow sensor heating circuit
B31 Storage tank sensor 1
B32 Storage tank sensor 2
B7 Common primary return sensor*
B71 Common secondary return or d.h.w. return sensor
B72 Return sensor heating circuit
B9 Outside sensor
K6 Circulating pump (optional)
Q1 Heating circuit pump
Q3 D.h.w. intermediate circuit pump
Y1 2-port valve common return
Y5 Mixing valve heating circuit
a) Circulating pump feeding water into the heat exchanger’s return
b) Circulating pump feeding water into the storage tank
* Suppression of hydraulic creep