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Siemens Burner Controls LMV27

Siemens Burner Controls LMV27

Siemens
Siemens Burner Controls LMV27 Series is a microprocessor-based burner management system designed for medium- to high-capacity forced draft gas or oil burners. It features integrated electronic fuel/air ratio control for up to two actuators, gas valve proving, and flame supervision. With Modbus communication and compatibility with Siemens AZL display units and ACS410 software, the LMV27 is suitable for industrial boilers and heating applications requiring coordinated combustion control.

Product Description

Siemens Burner Controls LMV27 Series

Siemens LMV27 Series is a microprocessor-based burner management system designed for the control and supervision of medium- to high-capacity forced draft burners. It supports single-fuel gas or oil burners operating in intermittent mode.

The LMV27 integrates burner sequence control, flame supervision, electronic fuel/air ratio control, and gas valve proving into one burner management platform. The system supports up to two actuators for coordinated combustion control.

Key Features

  • Microprocessor-based burner management system
  • Designed for single-fuel gas or oil burners
  • Electronic fuel/air ratio control
  • Supports up to two SQM3... or SQN1... actuators
  • Integrated gas valve proving system
  • Flame supervision using compatible QRA, QRB, QRC or ionization detectors
  • Integrated Modbus communication interface
  • Burner Communication Interface (BCI) for display and PC connectivity
  • Parameter configuration through display units or Siemens ACS410 software

Industrial Applications

Siemens LMV27 is intended for OEM manufacturers and qualified burner system integrators. Typical applications include:

  • Industrial steam boilers
  • Gas burner systems
  • Oil burner systems
  • Industrial heating equipment
  • Combustion systems requiring coordinated fuel and air control

Compatible System Components

  • Display Units: Siemens AZL21 and AZL23
  • Actuators: Siemens SQM33 and SQN1 Series
  • Flame Detectors: QRA2, QRA4, QRA10, QRB, QRC and ionization probes, subject to model compatibility
  • PC Software: Siemens ACS410
  • Communication Interfaces: OCI410 and OCI412.10

Note: Component selection, parameter settings, and system commissioning must follow the applicable Siemens technical documentation and be performed by qualified personnel.

Specifications

Siemens LMV27 Technical Specifications

Brand Siemens
Product Series LMV27 Series
Reference Model LMV27.100A2
Product Type Burner Management System
Control Technology Microprocessor-based
Fuel Type Gas / Oil (Single-fuel Burner)
Operating Mode Intermittent Operation
Supply Voltage AC 230 V (-15% / +10%)
Frequency 50 / 60 Hz ±6%
Power Consumption <30 W (Typical)
Fuel/Air Ratio Control Electronic
Maximum Actuators 2
Compatible Actuators SQM3... / SQN1...
Gas Valve Proving Integrated
Flame Detectors QRA2 / QRA4 / QRA10 / QRB / QRC / Ionization Probe
Safety Time (Gas) 3 seconds
Safety Time (Oil) 5 seconds
Communication Modbus / BCI
Display Units AZL21 / AZL23
Configuration Software Siemens ACS410
Protection Rating IP00 (Basic Unit)
Operating Temperature -20 to +60 °C
Relative Humidity <95% RH (Non-condensing)
Internal Fuse 6.3 AT
Maximum External Fuse 16 AT
Test Standards EN 230, EN 298, EN 1643, EN 12067-2, EN 13611

Technical information is based on Siemens Datasheet CC1N7541en for LMV27.100A2. Installation must follow Siemens requirements. The burner or boiler manufacturer must provide IP40 protection through suitable installation.