LMV26.300A2 Siemens Burner Control

Overview

The Siemens LMV26.300A2 is a microprocessor-based burner management system designed for the control and supervision of forced draft burners of medium to high capacity. This versatile unit provides all necessary supervisory functions for single-fuel or dual-fuel burners and features integrated electronic fuel-air ratio control. Engineered for reliability, the LMV26.300A2 streamlines burner management with its linkageless design and built-in communication interfaces, making it ideal for integration into complex industrial automation systems.

Features

• Integrated electronic fuel-air ratio control for up to two actuators, such as the SQM3 or SQN1 series
• Built-in gas valve proving system to ensure maximum operational safety
• Variable Speed Drive (VSD) control for air fan optimization
• Modbus communication interface based on RS-485 for easy integration into building automation systems
• Support for dual-fuel operation when used in conjunction with the AGM60 switch unit
• Designed for 250,000 startup cycles, equating to approximately 10 years of service life under normal conditions
• Comprehensive diagnostics and parameter setting via the AZL2 display unit or PC software

Specifications

• Model: LMV26.300A2
• Operating Voltage: AC 230 V (+10% / -15%), 50/60 Hz
• Power Consumption: Approximately 20 VA
• Operating Mode: Intermittent operation (at least one controlled shutdown every 24 hours)
• Protection Rating: IP00 (designed for installation in a control cabinet or housing)
• Temperature Range: -20 C to +60 C
• Weight: Approximately 1.0 kg
• Dimensions: 230 mm x 135 mm x 60 mm

Applications

• Supervision of forced draft gas and oil burners of medium to large capacity
• Industrial and commercial heating systems requiring precise fuel-to-air ratio modulation
• Dual-fuel burner systems (gas/oil) with the addition of a fuel switch unit
• Use in HVAC systems, steam boilers, and thermal process plants
• Applications complying with European standards EN 298, EN 676, and EN 267