Siemens RVL470,RVL469 Basic Documentation
CE1P2522E
30.03.2000
Siemens Building Technologies
Landis & Staefa Division
RVL470 and RVL469
Heating Controllers
Basic Documentation
Edition: 2.1
Controller series: B
1996 Siemens Building Technologies Ltd.
S
iemens Building Technologies AG
L
andis & Staefa Division
G
ubelstrasse 22
C
H-6301 Zug
T
el. 041 - 724 11 24
F
ax. 041 - 724 35 22
h
ttp://www.landisstaefa.com
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Contents
TOC-I
Contents
1. Summary.........................................................................................................1
1.1. RVL470 and RVL469.......................................................................................1
1.2. Brief description and key features....................................................................1
1.3. Type summary.................................................................................................1
1.4. Equipment combinations..................................................................................1
1.4.1. Suitable sensors ..............................................................................................1
1.4.2. Suitable room units..........................................................................................2
1.4.3. Suitable actuators............................................................................................2
1.4.4. Communication................................................................................................2
1.4.5. Documentation.................................................................................................2
2. Use..................................................................................................................3
2.1. Types of plant ..................................................................................................3
2.2. Types of buildings............................................................................................3
2.3. Types of heating systems................................................................................3
2.4. Functions .........................................................................................................3
3. Fundamentals.................................................................................................5
3.1. Key technical features......................................................................................5
3.1.1. Plant types with regard to the heating circuit....................................................5
3.1.2. Function blocks................................................................................................5
3.2. Plant types.......................................................................................................5
3.2.1. Plant type 1 – "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 heating .......................................................................8
3.4.3. Continuous NORMAL heating..........................................................................8
3.4.4. Standby............................................................................................................8
3.4.5. Manual operation.............................................................................................8
3.4.6. Plant type and operating mode........................................................................9
3.5. Operational status and operational level..........................................................9
4. Acquisition of measured values.................................................................10
4.1.1. Room temperature (A6, B5)...........................................................................10
4.1.1.1. Measurement.................................................................................................10
4.1.1.2. Handling of faults...........................................................................................10
4.1.1.3. Room model...................................................................................................10
4.1.2. Flow and boiler temperature (B1)...................................................................10
4.1.2.1. Measurement.................................................................................................10
4.1.2.2. Handling of faults...........................................................................................11
4.1.3. Outside temperature (B9) ..............................................................................11
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
TOC-II
Contents
Landis & Staefa Division
4.1.3.1. Measurement ................................................................................................ 11
4.1.3.2. Handling of faults........................................................................................... 11
4.1.4. Primary return temperature (B7).................................................................... 11
4.1.4.1. Measurement ................................................................................................ 11
4.1.4.2. Handling of faults........................................................................................... 11
4.1.5. Secondary return temperature (B71)............................................................. 12
4.1.5.1. Measurement ................................................................................................ 12
4.1.5.2. Handling of faults........................................................................................... 12
5. Function block "End-user 1"...................................................................... 13
5.1. Operating lines.............................................................................................. 13
5.2. Setpoints....................................................................................................... 13
5.2.1. General ......................................................................................................... 13
5.2.2. Frost protection for the building..................................................................... 13
5.3. Heating program............................................................................................ 13
5.4. Holiday program............................................................................................ 14
6. Function block "End-user 2"...................................................................... 15
6.1. Operating lines.............................................................................................. 15
6.2. Time of day and date..................................................................................... 15
6.3. Indication of faults ......................................................................................... 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 temperature source............................................................................. 20
8.4. Optimization .................................................................................................. 20
8.4.1. Definition and purpose .................................................................................. 20
8.4.2. Fundamentals................................................................................................ 21
8.4.2.1. With a room temperature sensor................................................................... 21
8.4.2.2. Without a room temperature sensor.............................................................. 21
8.4.3. Process......................................................................................................... 21
8.4.4. Room model temperature.............................................................................. 21
8.4.5. Optimum stop control.................................................................................... 22
8.4.6. Quick setback................................................................................................ 22
8.4.7. Optimum start control.................................................................................... 23
8.4.8. Boost heating ................................................................................................ 23
8.5. Room functions ............................................................................................. 24
8.5.1. Maximum limitation of the room temperature ................................................ 24
8.5.2. Room temperature influence......................................................................... 25
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Contents
TOC-III
8.6. Heating curve.................................................................................................25
8.6.1. Purpose .........................................................................................................25
8.6.2. Basic setting...................................................................................................25
8.6.2.1. Settings with the bar ......................................................................................26
8.6.2.2. Settings on operating lines.............................................................................26
8.6.2.3. Selection of setting.........................................................................................26
8.6.3. Deflection.......................................................................................................26
8.6.4. Parallel displacement of heating curve ..........................................................27
8.6.5. Display of setpoints........................................................................................27
8.7. Generation of setpoint....................................................................................28
8.7.1. Weather-compensated control.......................................................................28
8.7.2. Demand-compensated control.......................................................................28
9. Function block "Three-position actuator heating circuit"..........................29
9.1. Operating lines...............................................................................................29
9.2. Limitations......................................................................................................29
9.2.1. Limitations of the flow temperature................................................................29
9.2.2. Setpoint increase...........................................................................................29
9.3. Three-position control....................................................................................30
9.4. Excess mixing valve temperature ..................................................................30
9.5. Locking of pulses...........................................................................................30
10. Function block "Boiler"...............................................................................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
10.4.4. Protective boiler startup.................................................................................34
10.4.5. Protection against boiler overtemperatures....................................................35
10.5. Operating mode of pump M1 .........................................................................36
11. Function block "Setpoint of return temperature limitation" ....................37
11.1. Operating line.................................................................................................37
11.2. Description.....................................................................................................37
11.3. Minimum limitation of the return temperature.................................................37
11.3.1. Acquisition of the measured values ...............................................................37
11.3.2. Mode of operation..........................................................................................37
11.3.3. Mode of operation with a single unit (with no bus).........................................38
11.3.4. Mode of operation in interconnected plants ...................................................38
11.3.4.1. Central impact of limitation.............................................................................38
11.3.4.2. Local impact of limitation................................................................................ 38
12. Function block "District heat" ....................................................................39
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
TOC-IV
Contents
Landis & Staefa Division
12.1. Operating lines.............................................................................................. 39
12.2. Limitations..................................................................................................... 39
12.2.1. Secondary flow temperature.......................................................................... 39
12.2.2. Maximum limitation of primary return temperature........................................ 39
12.2.2.1. Purpose39
12.2.2.2. Generation of maximum limit value............................................................... 39
12.2.2.3. Function40
12.2.3. Maximum limitation of the return temperature differential (DRT limitation).... 40
12.2.3.1. Function40
12.2.3.2. Purpose40
12.2.4. Integral action time........................................................................................ 41
12.2.5. Minimum limitation of stroke (suppression of hydraulic creep)...................... 41
12.2.6. Flow limitation................................................................................................ 41
13. Function block "Service functions and general settings"....................... 42
13.1. Operating lines.............................................................................................. 42
13.2. Display functions........................................................................................... 43
13.2.1. Flow temperature setpoint............................................................................. 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 ................................................................ 48
13.4.7. Gain of locking signal.................................................................................... 48
13.4.7.1. Fundamentals................................................................................................48
13.4.7.2. Uncritical locking signals............................................................................... 48
13.4.7.3. Critical locking signals................................................................................... 48
13.5. Entries for LPB.............................................................................................. 49
13.5.1. Source of time of day .................................................................................... 49
13.5.2. Source of outside temperature...................................................................... 50
13.5.3. Addressing of devices................................................................................... 50
13.5.4. Bus power supply.......................................................................................... 51
13.5.5. Bus loading characteristic ............................................................................. 51
14. Function block "Contact H2" ..................................................................... 52
14.1. Operating line................................................................................................ 52
14.2. Description .................................................................................................... 52
15. Function block "External inputs" .............................................................. 53
15.1. Operating lines.............................................................................................. 53
15.2. Contact H2.................................................................................................... 53
15.3. Hours run counter.......................................................................................... 53
15.4. Software version............................................................................................ 53
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Contents
TOC-V
15.5. Identification number of room unit..................................................................53
15.6. Radio clock, elapsed time since last reception...............................................53
16. Function block "Locking functions"..........................................................54
16.1. Operating line.................................................................................................54
16.2. Locking the settings on the software side ......................................................54
16.3. Locking the settings for district heat on the hardware side ............................54
17. Communication............................................................................................55
17.1. Combination with room units..........................................................................55
17.1.1. General..........................................................................................................55
17.1.2. Combination with room unit QAW50..............................................................55
17.1.2.1. Overriding the operating mode.......................................................................55
17.1.2.2. Setting knob for room temperature readjustments.........................................55
17.1.3. Combination with room unit QAW70..............................................................55
17.1.3.1. Overriding the operating mode.......................................................................56
17.1.3.2. Setting knob for room temperature readjustments.........................................56
17.1.3.3. Effect of the individual QAW70 operating lines on the RVL470.....................56
17.1.3.4. Overriding the QAW70 entries 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. General..........................................................................................................60
19.1.1.1. Operating elements........................................................................................60
19.1.1.2. Display 61
19.1.1.3. Operating instructions....................................................................................61
19.1.2. Analog operating elements ............................................................................61
19.1.2.1. Buttons and displays for selecting the operating mode..................................61
19.1.2.2. Heating curve.................................................................................................61
19.1.2.3. Setting knob for room temperature readjustments.........................................61
19.1.2.4. Buttons and displays for manual operation....................................................61
19.1.2.5. Display of positioning commands...................................................................62
19.1.2.6. Display "Heating operates"............................................................................62
19.1.3. Digital operating elements..............................................................................62
19.1.3.1. Operating line principle..................................................................................62
19.1.3.2. Buttons 62
19.1.3.3. Block skip function .........................................................................................62
19.1.3.4. Info button...................................................................................................... 63
19.1.4. Setting levels and access rights.....................................................................63
19.1.4.1. Setting levels..................................................................................................63
19.1.4.2. Access rights..................................................................................................63
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
TOC-VI
Contents
Landis & Staefa Division
19.2. Commissioning.............................................................................................. 63
19.2.1. Installation instructions.................................................................................. 63
19.2.2. Operating lines.............................................................................................. 63
19.2.2.1. Setting the operating line "Plant type" ........................................................... 63
19.2.2.2. Setting the other 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. Mechanical design ...................................................................................... 67
21.1. Basic design.................................................................................................. 67
21.2. Dimensions.................................................................................................... 67
22. Technical data ............................................................................................. 68
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Summary
1/68
1. Summary
1.1. RVL470 and RVL469
This Basic Documentation covers two types of heating controllers, the RVL470 and the
RVL469. The RVL470 is described in every detail, not so the RVL469.
The RVL469 contains functions of the RVL470 and is therefore integrated in the present
Basic Documentation. But only the section “RVL469” refers to the specific functionality
of the RVL469 (functions that differ from those of the RVL470). In all the other chapters
and sections, the RVL469 will not be specifically mentioned.
1.2. Brief description and key features
•
The RVL470 is a multi-functional heating controller for use in residential and nonresidential buildings. It is suited for weather-compensated flow temperature control of
heating zones with or without room temperature influence or for demand-compensated control of heat generating equipment (pre-control)
•
It is used in plants with own heat generating equipment or with a district heat connection
•
The RVL470 is capable of communicating with other units via LPB (Local Process
Bus)
•
The RVL470 has 6 types of plants pre-programmed. When a certain plant type is selected, 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 adjustment of the heating curve is also possible. For readjustment of the room temperature,
a setting knob is used (L&S standard)
•
All other parameters are set digitally using the operating line principle (L&S standard)
•
Operating voltage AC 230 V, CE conformity, overall dimensions to DIN 43700
(144
*
144 mm)
1.3. Type summary
The
RVL470
is a compact controller requiring no plug-in modules or cards.
1.4. Equipment combinations
1.4.1. Suitable sensors
•
For water temperatures:
Suitable are all types of temperature sensors that use a sensing element LGNi 1000 Ω at 0 °C. The following types are presently available:
–
Clamp-on temperature sensor QAD22
–
Immersion temperature sensor QAE22...
–
Immersion temperature sensor QAP21.3 with integrated connecting cable
•
For the room temperature:
Suitable are all types of temperature sensors that use a sensing element LGNi 1000 Ω at 0 °C. The following type is presently available:
–
Room temperature sensor QAA24
•
For the outside temperature:
–
Outside sensor QAC22 (sensing element LG-Ni 1000 Ω at 0 °C)
–
Outside sensor QAC32 (sensing element NTC 575 Ω at 20 °C)
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
2/68
Summary
Landis & Staefa Division
1.4.2. Suitable room units
•
Room unit QAW50
•
Room unit QAW70
1.4.3. Suitable actuators
All Landis & Staefa actuators with the following features can be used:
•
Electric or electro-hydraulic actuators with a running time of 0.5 to 14.5 minutes
•
Suitable for three-position control
•
Operating voltage AC 24 V ... AC 230 V
1.4.4. Communication
Communication is possible with 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 Instructions RVL470 4 319 2643 0
Installation Instructions RVL469 74 319 0017 0
Data sheet QAW50 CE2N1635E
Data sheet QAW70 CE2N1637E
Data sheet "LPB Basic System Data" CE1N2030E
Data sheet "LPB Basic Engineering Data" CE1N2032E
Basic documentation "LPB System engineering“ CE1P2370E
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Use
3/68
2. Use
2.1. Types of plant
Basically, the RVL470 is suitable for all types of heating plants that use weathercompensated flow temperature control. In addition, it can be used for demandcompensated control of the main flow. Examples:
•
Heating zones with own heat generation
•
Heating zones with a direct or indirect district heat connection
•
Main groups with own heat generation
•
Main groups with a direct or indirect district heat connection
•
Large plants comprising heat generation and several heating zones
2.2. Types of buildings
Basically, the RVL470 is suitable for all types of buildings that use weathercompensated heating control, but is designed specifically for use in:
•
Multi-family houses
•
Single-family houses
•
Small to medium-size non-residential buildings
2.3. Types of heating systems
The RVL470 is suitable for use with all standard heating systems, such as:
•
Radiators
•
Convectors
•
Underfloor heating 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 temperature control through direct control of a single- or two-stage burner
•
Optimum start / stop control according to the selected weekly program
•
Quick setback and boost heating according to the selected weekly program
•
ECO function: demand-dependent switching of the heating system based on the type
of building construction and the outside temperature
•
Weekly program for building occupancy with a maximum of three setback periods per
day and daily varying occupancy schedules
•
Entry of eight holiday periods per year
•
Automatic summer- / wintertime changeover
•
Display of parameters, actual values, operational statuses and fault status signals
•
Communication with other units via the LPB
•
Remote operation with the help of a room unit and external switches
•
Service functions
•
Frost protection for the plant, the boiler and the building
•
Minimum or maximum limitation of return temperature
•
DRT limitation (limitation of the temperature differential)
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
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".
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Fundamentals
5/68
3. Fundamentals
3.1. Key technical features
The RVL470 offers two key technical features:
•
The controller has six plant types preprogrammed
•
The settings are combined in the form of function blocks
3.1.1. Plant types with regard to the heating circuit
In terms of the heating circuit, the following plant types are available:
•
Plant type 1 – "Space heating with a mixing valve"
•
Plant type 2 – "Space heating with a boiler"
•
Plant type 3 – "Space heating with district heat"
•
Plant type 4 – "Pre-control with a mixing valve"
•
Plant type 5 – "Pre-control with a boiler"
•
Plant type 6 – "Pre-control with district heat"
3.1.2. Function blocks
The following function blocks are available:
•
Function block "End-user 1"
•
Function block "End-user 2"
•
Function block "Plant type"
•
Function block "Space heating"
•
Function 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 the form of operating
lines. A description of the individual functions is given below, for each function block and
line.
3.2. Plant types
The RVL470 has six types of plant ready programmed, whereby the functions are assigned to each type of plant, as required. When commissioning a plant, the respective
plant type must be selected.
3.2.1. Plant type 1 – "Space heating with a mixing valve"
B9
A6/B5
B7
Space heating with weather-compensated flow temperature control. Three-position
control through the heating zone's mixing valve. Outside temperature signal from own
outside sensor or data bus. With or without room temperature influence. Heating-up and
setback according to the heating program.
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
6/68
Fundamentals
Landis & Staefa Division
3.2.2. Plant type 2 – "Space heating with a boiler"
B9
A6/B5
Space heating with own boiler, with weather-compensated boiler temperature control.
Two-position control through a burner.
Outside temperature signal from own outside sensor or data bus. With or without room
temperature influence. Heating-up and setback according to the heating program.
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 temperature 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 program.
3.2.4. Plant type 4 – "Pre-control with a mixing valve"
B7
Pre-control with demand-compensated control of the main flow temperature. Threeposition control through the mixing valve in the main flow.
Heat demand signal from the data bus. No heating program.
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Fundamentals
7/68
3.2.5. Plant type 5 – "Pre-control with a boiler"
B7
Pre-control with demand-compensated boiler temperature control. Two-position control
through the burner.
Heat demand signal from the data bus. No heating program.
3.2.6. Plant type 6 – "Pre-control with district heat"
B7 B71
2522S06
Pre-control with a district heat connection, with demand-compensated control of the
secondary flow temperature through the valve in the primary return.
Heat demand signal from the data bus. No heating program.
A6 Room unit QAW50 or QAW70 E1 Heat generating 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 typeLevel Function block
123456
End-user 1
zzz
End-user
level
End-user 2
zzzzzz
Plant type
zzzzzz
Space heating
zzz
Three-position actuator for heating circuit
zzzz
Boiler
zz
Setpoint of return temperature limitation
z zzzz
Settings for plant type 3
zz
Service functions and general settings
zzzzzz
Contact H2
zzzz
Heating engineer level
Contact H2 and general displays
zzzzzz
Locking level Locking functions
zzzzzz
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
8/68
Fundamentals
Landis & Staefa Division
The block diagram shows
•
the function blocks assigned to the three operational levels
•
the function blocks activated with the different plant types
3.4. Operating modes
The operating mode is selected on the controller by pressing the respective button.
Also, the operating mode can be changed by bridging terminals H1–M.
3.4.1. Automatic mode
•
Automatic changeover from NORMAL to REDUCED temperature, and vice versa,
according to the entered weekly program
•
Automatic changeover to holiday mode, and back, according to the entered holiday
schedule
•
Demand-dependent switching of the heating system in function of the room and outside temperature while giving consideration to the building's thermal inertia (ECO
function)
•
Remote operation from a room unit (optional)
•
Frost protection is assured
3.4.2. Continuous REDUCED heating
•
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
•
Frost protection is assured
3.4.5. Manual operation
The RVL470 can be switched to manual operation. In that case, the control will be
switched off.
In manual operation, the various regulating units behave as follows:
•
Heating circuit slipper valve / seat valve: this mixing valve is not under voltage, but
can be manually driven to any position by pressing the manual buttons
( = clos-
ing,
= opening).
The heating circuit pump/circulating pump M1 is continuously running.
•
Boiler: the two burner stages are continuously on. The manual button can be used
to switch the second stage on and off.
The heating circuit pump/circulating pump M1 is continuously running.
Manual operation also negates any overriding of the controller's operating mode (bridging H1–M).
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Fundamentals
9/68
3.4.6. Plant type and operating mode
Depending on the type of plant selected, the following operating modes are available:
Plant type
1 YES YES YES YES YES
2 YES YES YES YES YES
3 YES YES YES YES YES
4 YES NO NO NO YES
5 YES NO NO *) YES
6 YES NO NO NO YES
*) Depending on the boiler's operating mode:
Boiler with automatic shutdown: NO
Boiler without manual shutdown: YES
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 operating 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.
When the operational status is ON, there is a maximum of three operational levels, depending on the operating mode. The operational level is determined by the heating program and the holiday program.
OFF
ON
OFF
ON
OFF ON
ON
Opera t i ng mode
Operationa l statu s
Operat ional level
2522B03e
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
10/68
Acquisition of measured values
Landis & Staefa Division
4. Acquisition of measured values
4.1.1. Room temperature (A6, B5)
4.1.1.1. Measurement
The following choices exist:
•
A room temperature sensor QAA24 can be connected to terminal B5
•
A room unit QAW50 or QAW70 can be connected to terminal A6
•
A unit can be connected to each of the two terminals. In that case, the RVL470 can ascer-
tain the average of the two measurements.
The other room unit functions will not be affected by averaging
4.1.1.2. Handling of faults
If there is a short-circuit or an interruption in one of the two measuring circuits, the control will respond as follows:
•
No sensor (operating line 65 = 0):
A short-circuit or open-circuit has no impact on the control. A fault status message will
not be generated
•
Room unit sensor QAW... (operating line 65 = 1):
In the event of a short-circuit or open-circuit, the control continues to operate depending on the function of the room model. A fault status message will be generated
•
Room temperature sensor QAA24 (operating line 65 = 2):
In the event of a short-circuit or open-circuit, the control continues to operate depending 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 generated.
In the case of a short-circuit or open-circuit in both measuring circuits, the control
continues to operate depending on the function of the room model. Two fault status
messages will be generated
•
Automatic mode (operating line 65 = A):
Since the controller itself decides how it acquires the room temperature, no fault
status messages can be generated
4.1.1.3. Room model
The RVL470 features a room model which simulates the development of the room temperature. In plants with no measurement of the room temperature, it can provide certain
room functions (e.g. quick setback).
For more details, refer to section "8.4.4. Room model temperature".
4.1.2. Flow and boiler temperature (B1)
4.1.2.1. Measurement
The flow or boiler temperature is acquired with one or two sensors. Two sensors connected in parallel are used to ascertain the average value. The temperature sensors
used must always have a sensing element LG-Ni 1000 Ω.
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Acquisition of measured values
11/68
4.1.2.2. Handling of faults
A short-circuit or interruption in the measuring circuit is identified and displayed as a
fault. In that case, the plant will respond as follows:
•
Plants with mixing valve control:
The heating circuit pump/circulating pump M1 continues to run and the mixing valve
will close
•
Plants with boiler control:
The heating circuit pump/circulating pump M1 continues to run and the burner will
shut down
4.1.3. Outside temperature (B9)
4.1.3.1. Measurement
The outside temperature is acquired by the outside sensor, which may be a QAC22 or
QAC32:
QAC22: sensing element LG-Ni 1000 Ω at 0 °C
QAC32: sensing element NTC 575 Ω at 20 °C
The controller automatically identifies the type of sensor used. In interconnected plants,
the outside temperature signal is made available via LPB. Controllers having their own
sensor pass the outside temperature signal to the data bus.
4.1.3.2. Handling of faults
If there is a short-circuit or an interruption in the measuring circuit, the control will respond as follows:
•
In the event of a short-circuit:
If an outside temperature is made available via LPB, it is used. If none is available, the
control uses a fixed value of 0 °C outside temperature. 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 interconnected 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 fault status signal will be
delivered
4.1.4. Primary return temperature (B7)
4.1.4.1. Measurement
The primary return temperature is acquired with a sensor having a sensing element LGNi 1000 Ω at 0 °C. This measured value is required for minimum and maximum limitation of the primary return temperature and for limitation of the temperature differential
(DRT limitation).
In interconnected plants, the primary return temperature with plant type 1 can be acquired via the data bus. Controllers with plant type 1 and connected sensor pass the
primary return temperature signal to the data bus.
4.1.4.2. Handling of faults
If there is a short-circuit or an interruption in the measuring circuits, the control will respond as follows:
•
If, on the data bus, there is a return temperature from a controller of the same segment available, it is used (only with plant type no. 1). No fault status message will be
generated since this is the normal status in inconnected plants
•
If, on the data bus, there is no return temperature available, the return temperature
limitation functions will be deactivated and a fault status message generated
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
12/68
Acquisition of measured values
Landis & Staefa Division
4.1.5. Secondary return temperature (B71)
4.1.5.1. Measurement
The secondary return temperature is acquired 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 temperature.
4.1.5.2. Handling of faults
If there is a short-circuit or open-circuit in the measuring circuit, and if the controller requires the return temperature, DRT limitation will be deactivated and a fault status message generated.
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Function block "End-user 1"
13/68
5. Function block "End-user 1"
This function block contains settings that the end-user himself can make.
5.1. Operating lines
Line Function, parameter Unit Factory
setting
Range
1
Setpoint for NORMAL heating °C 20.0 0...35
2
Setpoint for REDUCED heating °C 14.0 0...35
3
Setpoint for frost protection / holiday mode °C 10.0 0...35
4
Weekday 1-7 1...7, 1-7
5
1st heating period, start of NORMAL heating hh:mm 06:00 --:-- / 00:00...24:00
6
1st heating period, start of REDUCED heating hh:mm 22:00 --:-- / 00:00...24:00
7
2nd heating period, start of NORMAL heating hh:mm --:-- --:-- / 00:00...24:00
8
2nd heating period, start of REDUCED heating hh:mm --:-- --:-- / 00:00. ..24:00
9
3rd heating period, start of NORMAL heating hh:mm --:-- --:-- / 00:00...24:00
10
3rd heating period, start of REDUCED heating hh:mm --:-- --:-- / 00:00...24:00
11
Holiday period 1...8 1...8
12
Date of first day of holidays dd:MM --:-- 00.00. ... 31.12.
13
Date of last day of holidays dd:MM --:-- 00.00. ... 31.12.
14
Heating curve, flow setpoint TV1 at 15 °C outside
temperature
°C 30 20...70
15
Heating curve, flow setpoint TV2 at –5 °C outside
temperature
°C 60 20...120
5.2. Setpoints
5.2.1. General
The setpoint of the NORMAL and the REDUCED temperature and of frost protection for
the plant / holiday mode are entered directly in °C room temperature. They are independent 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 NORMAL and the REDUCED temperature (settings on operating lines 1 and 2).
If a room temperature sensor is used and the room temperature falls below the holiday /
frost protection setpoint, ECO – if available – will stop OFF until the room temperature
has risen 1 °C above the holiday / frost protection setpoint.
5.3. Heating program
The heating program of the RVL470 provides a maximum of three heating periods per
day. Also, every weekday may have different heating periods.
Note:
The entries to be made are not switching times, but periods of time during which the
NORMAL temperature shall apply. Usually, these periods of time are identical to the
building's occupancy times. The actual switching times for the change from the
REDUCED to the NORMAL temperature, and vice versa, are calculated by the optimization function, provided it is activated. Using the setting "1-7" on operating line 4, it is
possible to enter a heating program that applies to all days of the week. This simplifies
the settings: if the weekend settings differ from the other weekday settings, first enter
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
14/68
Function block "End-user 1"
Landis & Staefa Division
the times for the entire week, then make the settings for days 6 and 7.
The entries are sorted and overlapping heating periods combined.
5.4. Holiday program
A maximum of eight holiday periods 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 holiday periods may overlap. It is not necessary to observe a certain order.
The holiday program is only activated in AUTO mode.
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Function block "End-user 2"
15/68
6. Function block "End-user 2"
This function block contains settings that the end-user himself may make, as well as
fault indication.
6.1. Operating lines
Line Function, parameter Unit Factory
setting
Range
38
Time of day hh:mm 00:00...23:59
39
Weekday 1...7
40
Date dd:MM 1.01. ... 31.12.
41
Year yyyy 1995...2094
50
Faults 0...255
6.2. Time of day and date
The RVL470 has a yearly clock to enter the time of day, weekday and date.
The changeover from summer- to wintertime, and vice versa, is automatic. Should the
respective regulations change, the changeover dates can be adjusted (refer to
section "13. Function block "Service functions and general settings"").
6.3. Indication of faults
The following faults are indicated:
Number Fault
10 Interruption or short-circuit in the outside sensor's measuring circuit (B9)
30 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 measuring
circuit (B5)
61 Interruption or short-circuit in the measuring circuit of the room unit's sen-
sor (A6)
62 Wrong room unit connected
81 Short-circuit on the LPB
82 Same bus address exists on the data bus (LPB) several times
100 Two time masters on the LPB
120 Flow alarm (for explanation, refer to function block "Service functions",
operating line 171)
140 Inadmissible bus address or inadmissible plant type (if RVL470 is used
with LPB)
142 Wrong partner unit (with RVL469 only)
If a fault occurs, the LCD displays
ERROR
.
In interconnected plants, the address (device and segment number) of the controller
causing the fault is indicated on all the other controllers, but no address is displayed on
the controller causing the fault.
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
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.
Siemens Building Technologies Basic Documentation RVL470 CE1P2522E / 30.03.2000
Landis & Staefa Division
Function block "Plant type"
17/68
7. Function block "Plant type"
This function block only contains the entry of the type of plant.
7.1. Operating line
Line Function, 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 ensures that the functions required for the specific type of plant, the parameters and operating lines for the settings and displays will be activated.
All plant-specific variables and operating lines that are available for the other plant types
will then be dead.
Example (selection of plant type no. 2):
2522Z18
CE1P2522E / 30.03.2000 Basic Documentation RVL470 Siemens Building Technologies
18/68
Function block "Space heating"
Landis & Staefa Division
8. Function block "Space heating"
This function block provides the ECO function, the optimization functions with boost
heating and quick setback, as well as the room temperature influence.
8.1. Operating lines
Line Function, parameter Unit Factory
setting
Range
61
Heating limit for NORMAL heating (ECO day) °C 17.0 --.- / −5...+25
62
Heating limit for REDUCED heating (ECO night) °C 5.0 --.- / –5...+25
63
Building time constant h 20 0...50
64
Quick setback 1 0 / 1
65
Source of the room temperature A 0 / 1 / 2 / 3 / A
66
Type of optimization 0 0 / 1
67
Maximum heating-up time hh:mm 00:00 00:00...42:00
68
Maximum optimum shutdown h:mm 0:00 0:00...6:00
69
Maximum limitation of room temperature °C --.- --.- / 0...35
70
Gain factor for room temperature influence 4 0...20
71
Boost of room temperature setpoint °C 5 0...20
72
Parallel displacement of heating curve °C 0.0
−4.5...+4.5
73
Type of heating curve adjustment 0 0...2
8.2. ECO function
The ECO function controls the heating system depending on demand. It gives consideration to the development of the room temperature depending on the type of building
construction as the outside temperature varies. If the amount of heat stored in the
building is sufficient to maintain the room temperature setpoint currently required, the
ECO function will switch the heating off.
Using the 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
and indicates how quickly the room temperature in the building would change if the
outside temperature was suddenly changed. The following guide values can be used
for setting the building time constant: 10 hours for light, 25 hours for medium, and 50
hours for heavy building structures
•
The actual outside temperature (TA)
•
The composite outside temperature (TAM); it is the mean value of
–
the actual outside temperature and
–
the outside temperature filtered by the building time constant
In comparison with the actual outside temperature, the composite outside temperature is attenuated. Hence, it represents the effects of short-time outside temperature
variations on the room temperature as they often occur during intermediate seasons
(spring time and autumn)
•
The attenuated outside temperature (TAD). It is generated by filtering twice the actual
outside temperature by the building time constant. This means that, in comparison
with the actual outside temperature, the attenuated outside temperature is considerably dampened.
This ensures that no heating will be provided in the summer when, under normal circumstances, the heating would be switched on because the outside temperature
drops for a few days.
Loading...