User Manual

ManualsBrandsSiemens ManualsBurner EquipmentBurner Management System LMV37.4

CC1N7546en

13.04.2018

Building Technologies

546

Basic unit with

integrated air-fuel ratio

control for forced draft

burners

LMV37.4...

The LMV37... is a microprocessor-based burner management system with

matching system components for the control and supervision of forced draft

burners of medium to high capacity.

The LMV37... and this Data Sheet are intended for OEMs which integrate the units

in their products!

Use

Microprocessor-based basic unit for single-fuel burners of any capacity, with electronic

air-fuel ratio control, up to 2 actuators, with integrated gas valve proving system.

The system components (AZL2, actuators) are connected directly to the LMV37.4. All

safety-related digital inputs and outputs of the LMV37.4 are monitored by a contact

feedback network.

∂ Type-tested and approved in accordance with DIN EN 298

∂ Applications in accordance with EN 676: Automatic forced draft burners for

gaseous fuels

∂ Applications in accordance with EN 267: Forced draft burners for liquid fuels

For intermittent operation in connection with the LMV37..., the ionization probe or the

QRA..., QRB… or QRC... optical flame detectors can be used. Continuous operation

is possible only when using an ionization probe.

For intermittent operation could in connection with the LMV37..., the ionization probe or

the optical flame detector QRA4... or QRB... can be used. Continuous operation is

possible only when using an ionization probe.

For Europe

For North America

Summary of content (22 pages)

PAGE 1
7 Basic unit with integrated air-fuel ratio control for forced draft burners 546 LMV37.4... The LMV37... is a microprocessor-based burner management system with matching system components for the control and supervision of forced draft burners of medium to high capacity. The LMV37...
PAGE 2
Features The following components are integrated in the basic unit of the LMV37...: ∂ Burner management system complete with valve proving system ∂ Electronic air-fuel ratio control system for a maximum of 2 SQM3... or SQN1...
PAGE 3
Standards and certificates Applied directives: ∂ Low-voltage directive ∂ Directive for pressure devices ∂ Gas Appliances Regulation (EU) ∂ Electromagnetic compatibility EMC (immunity) *) 2014/35/EC 2014/68/EU (EU) 2016/426 2014/30/EC *) The compliance with EMC emission requirements must be checked after the burner management system is installed in equipment Compliance with the regulations of the applied directives is verified by the adherence to the following standards / regulations: ∂ Automatic burner c
PAGE 4
Life cycle The burner management system has a designed lifetime* of 250,000 burner startup cycles which, under normal operating conditions in heating mode, correspond to approx. 10 years of usage (starting from the production date given on the type field). This lifetime is based on the endurance tests specified in standard EN 298. A summary of the conditions has been published by the European Control Manufacturers Association (Afecor) (www.afecor.org). The designed lifetime is based on use of the LMV37.
PAGE 5
Ordering Burner control LMV37... The basic unit is the actual burner control featuring all-polar input / output terminals. No operating elements. Operation via detached ancillary units for wire-bound communication. See Basic Documentation P7546 Article no. Type Mains voltage Parameter set BPZ:LMV37.400A2 LMV37.400A2 AC 230 V Europa BPZ:LMV37.420A1 LMV37.
PAGE 6
Ordering (cont´d) Flame detectors QRA2 Flame detector for use with Siemens burner controls, for the supervision of gas flames and yellow- / blue-burning oil flames as well as ignition spark checking. Plastic housing, metalized to prevent static charging caused by the air flow from the fan. For direct mounting on the burner. The detectors can be supplied with or without securing flange and clamp.
PAGE 7
Ordering (cont´d) Actuators SQM33.4… Rated torque 1.2 Nm (0.8 Nm holding torque when dead), running time 5 s, stepper motor, front mounting, D-type drive shaft. See Data Sheet N7813 SQM33.5… Rated torque 3 Nm (2.6 Nm holding torque when dead), running time 5 s, stepper motor, front mounting, D-type drive shaft. See Data Sheet N7813 SQM33.7… Rated torque 10 Nm (6 Nm holding torque when dead), running time 17 s, stepper motor, front mounting, D-type drive shaft.
PAGE 8
Ordering (cont´d) Connector sets AGG3.131 Article no.: BPZ:AGG3.131 Complete connector set RAST2.5 / RAST3.5 / RAST5 for gas / oil applications, single pack. See Object List C7541 (74 319 0637 0) Example: X5-02 AGG3.132 Article no.: BPZ:AGG3.132 Complete connector set RAST2.5 / RAST3.5 / RAST5 for gas- / oil applications, pack of 10. See Object List C7541 (74 319 0637 0) AGG3.131 AGG3.
PAGE 9
Ordering (cont´d) AGG9… Single connectors Packing unit 200 in total Accessories Example X5-03 Article no. Type Type of connector Terminal BPZ:AGG9.203 AGG9.203 RAST5 X3-02 BPZ:AGG9.204 AGG9.204 RAST5 X3-03 BPZ:AGG9.206 AGG9.206 RAST5 X8-04 BPZ:AGG9.209 AGG9.209 RAST5 X10-06 BPZ:AGG9.217 AGG9.217 RAST5 X75 BPZ:AGG9.303 AGG9.303 RAST5 X3-05 BPZ:AGG9.304 AGG9.304 RAST5 X4-02 BPZ:AGG9.306 AGG9.306 RAST5 X5-01 BPZ:AGG9.307 AGG9.307 RAST5 X5-02 BPZ:AGG9.309 AGG9.
PAGE 10
Ordering (cont´d) Cables AGV50.100 Article no.: BPZ:AGV50.100 Signal cable for AZL2..., with RJ11 connector, length 1 m, pack of 10 AGV50.300 Article no.: BPZ:AGV50.300 Signal cable for AZL2..., with RJ11 connector, length 3 m, pack of 10 Proportional controlling element with mounting plate VKP Proportional controlling element for mounting between threaded flanges in gas trains. Refer to Data Sheet N7646 ASK33.1 Article no.: BPZ:ASK33.1 Larger mounting plate required to replace existing mounting plate.
PAGE 11
1 X3-05 1 X3-04 1 X3-03 Connection and internal diagram LMV37...
PAGE 12
Technical Data LMV37... basic unit General Mains voltage - LMV37.420A1 - LMV37.
PAGE 13
Technical Data (cont´d) Terminal loading Outputs Total contact loading: ∂ Rated voltage - LMV37.420A1 - LMV37.400A2 ∂ Unit input current (safety loop) from: - Fan motor contactor - Ignition transformer - Valves - Oil pump / magnetic clutch Individual contact loading: Fan motor contactor ∂ Rated voltage - LMV37.420A1 - LMV37.400A2 ∂ Rated current - LMV37.400A2 - LMV37.420A1 ∂ Power factor Alarm output ∂ Rated voltage - LMV37.420A1 - LMV37.
PAGE 14
Technical Data (cont´d) Connection for pressure switch ∂ Rated voltage - LMV37.420A1 AC 120 V, 50 / 60 Hz - LMV37.400A2 AC 230 V, 50 / 60 Hz ∂ Rated current 1,5 mA ∂ Power factor --Power supply for pressure switch-max / POC (X5-02 pin 3) ∂ IaMax <10 mA Analog output / load output X74 pin 3 Accuracy of output voltage ±1 % Cable lengths Mains line AC 120 V / AC 230 V Display, BCI Max. 100 m (100 pF/m) For installation under the burner hood or in the control panel Max. 3 m (100 pF/m) Max.
PAGE 15
Technical Data (cont´d) Signal cable AGV50... from AZL2... ↑ BCI Signal cable Cable length - AGV50.100 - AGV50.300 Location Environmental conditions Storage Climatic conditions Mechanical conditions Temperature range Humidity Transport Climatic conditions Mechanical conditions Temperature range Humidity Operation Climatic conditions Mechanical conditions Temperature range Humidity Installation altitude Color white Unshielded Conductor 4 x 0.
PAGE 16
Technical Data (cont´d) Flame supervision with ionization probe For continuous operation! No-load voltage at ION terminal (X10–05 pin 2) Approx. U Mains Caution! The ionization probe must be protected against electric shock hazard (electric shock hazard)! Short-circuit current Required detector current Possible detector current Max. perm. length of detector cable (laid separately) Max. AC 1 mA Min. DC 2.3 µA, flame display approx.
PAGE 17
Technical Data (cont´d) Ionization input Bild 442en/0916 100 90 80 70 Flame intensity in % 60 50 40 30 20 10 0 0 2 4 6 8 10 12 14 16 Ionization current in µA Ionization probe Measuring circuit for detector current measurement LMV... X10-05/2 Legend M C ION C Electrolytic capacitor 100...470 µF; DC 10...25 V ION Ionization probe M Microammeter Ri max. 5000 ς X10-05/1 17/22 Building Technologies CC1N7546en 13.04.
PAGE 18
Technical Data (cont´d) Flame supervision with QRA2... / QRA4... / QRA10... Warning! If UV flame detectors QRA2… / QRA4... / QRA10... are used for flame supervision with the LMV37.4, it must be ensured that the LMV37.4 is permanently connected to power (conforming to EN 298), thus enabling the LMV37.4 to detect flame detector failures during startup and shutdown. Generally, the LMV37.4 works with QRA... flame detectors in intermittent operation.
PAGE 19
Technical Data (cont´d) Flame supervision with QRB1/QRB3 Β No-load voltage at QRB1/QRB3 terminal (X10–05 terminal 3) Max. perm. length of QRB1/QRB3 detector cable (laid separately) Approx. DC 5 V 3 m (wire – wire 100 pF/m) Note A detector resistance of RF <500 ς is identified as a short-circuit and leads to safety shutdown in operation as if the flame had been lost.
PAGE 20
Technical Data (cont´d) Flame supervision with QRB4 Open-circuit voltage at terminal QRB4 (X10-05 pin 3) Permissible length of QRB4 detector cable (laid separately) Approx. 5 V DC 3 m (wire to wire100 pF/m) Threshold values when flame is supervised by QRB4 Start prevention (extraneous light) Flame intensity (parameter 954) ≥10% Operation Flame intensity (parameter 954) >16% Β Note! In the case of the QRB4, the maximum intensity display is limited to approximately 40% due to the system (parameter 954).
PAGE 21
Technical Data (cont´d) Flame supervision with QRC... Check the intensity of flame with the AZL2... For system-specific reasons, the display of maximum flame intensity by the AZL2... of maximum intensity is limited to approx. 55 %. Warning! Flame detectors QRC… are only suited for AC 230 V operation. Start prevention (extraneous light) with IQRC Operation with IQRC Ca. 15 µA, display approx. 10 % Flame intensity (parameter 954) Ca. 25 µA, display approx.
PAGE 22
Dimensions Dimensions in mm LMV37… 230 202 192 141 82,5 135 122 118,5 100,8 118,5 53,6 76,6 25,5 39,3 16,5 22,8 17,3 10,2 R100 12,5 7546m02/0307 23,5 27,2 82,5 128,5 172 202 19,7 60 19,5 217 22/22 Building Technologies 2018 Siemens AG Building Technologies, Berliner Ring 23, D-76437 Rastatt Subject to change! CC1N7546en 13.04.