LMV51.040C1 Siemens Burner Control

Overview

The Siemens LMV51.040C1 is a high-performance, microprocessor-based burner management system designed for the precise control and supervision of single or dual-fuel forced draft burners. As a core component of the LMV5 series, this 110V base unit integrates flame safeguard functions with electronic fuel-air ratio control. It is engineered to optimize combustion efficiency and safety in medium to high-capacity industrial and commercial applications, such as steam and hot water boilers or thermal fluid heaters. The system utilizes a CAN bus interface for seamless communication with actuators and display units, providing a sophisticated linkageless control solution that replaces traditional mechanical linkages.

Features

• Electronic fuel-air ratio control for up to 3 actuators simultaneously (with up to 4 connected)
• Integrated flame safeguard with support for continuous operation using IR flame sensors or ionization probes
• Integrated gas valve proving system to ensure safety and prevent leaks
• Microprocessor-based architecture with dual processors for high reliability and self-supervision
• CAN bus communication system for interconnection of system components like the AZL52 display
• Modbus communication capability for integration with building automation or external controllers
• Supports ultra-accurate stepper motor actuators with 900 repeatable positions for precise combustion tuning
• Built-in thermal shock protection and dual flame scanner options

Specifications

• Model: LMV51.040C1
• Operating Voltage: AC 120 V (+10% / -15%)
• Frequency: 50/60 Hz (+/- 6%)
• Power Consumption: Approximately 30 W
• Protection Rating: IP00 (requires suitable enclosure for higher ratings)
• Operating Temperature: -4 F to +140 F (-20 C to +60 C)
• Humidity: < 95% r.h. (non-condensing)
• Weight: Approximately 0.331 kg (0.73 lbs)
• Designed Lifetime: 250,000 burner startup cycles (approx. 10 years)

Applications

• Control and supervision of forced draft gas and oil burners in commercial and industrial settings
• Integration into steam boilers, hot water boilers, and thermal fluid heaters
• Fuel-air ratio control for dual-fuel burners requiring high-precision modulation
• Modernization of legacy burner systems by replacing mechanical linkages with electronic linkageless control
• High-demand burner operations in HVAC systems requiring continuous duty flame supervision