Siemens LGA52.150B17 User Manual

CC1N7418en
21.06.2016
Building Technologies Division
7
418
Gas Burner Controls
LGA...
The gas burner controls are used for supervision, startup and control of
atmospheric gas burners of small to medium capacity without a fan in
intermittent operation.
The LGA... and this Data Sheet are intended for use by OEMs which integrate the
gas burner controls in their products.
Use, features
The LGA are designed for startup and supervision of atmospheric gas burners in
intermittent operation. The flame is supervised with an ionization probe.
 Burner controls for gas burners and gas units with or without fan
to EN 298: 1994-02 or EN 298: 1993
 Undervoltage detection
 Air pressure supervision with functional check of the air pressure switch during
startup and operation
LGA41.173A27 and LGA52.171B27 are suitable for use with air heaters.

Note!
Do not use for new designs.

Note!
The following burner controls can be used for new designs:
 LME1...
 LME2...
 LME3...
 LME4...
General features
Special features

Siemens LGA52.150B17 Specifications

General

Brand	Siemens
Product Type	Controller
Model	LGA52.150B17
Gas burner	Yes
Oil burner	Yes
Voltage	220-240 V
Frequency	50-60 Hz
Protection class	IP40
Application	Gas burner
Safety time	3 seconds
Input Voltage	220-240 V
Operating Temperature	-20 to +60 °C

Summary

Gas Burner Controls Overview

Use and Features

Safety and Warning Notes

General Warning Notes

Crucial warnings to prevent injury, property damage, and environmental harm during operation.

Mounting and Installation Precautions

Essential guidelines for safe mounting and installation, including probe positioning.

Installation Procedures

General Installation Guidelines

Comprehensive instructions for wiring, grounding, and connecting components for safe installation.

Specific Wiring Configurations

Ionization Probe Electrical Connection

Commissioning and Safety Checks

Mandatory safety checks and their anticipated responses for proper system startup.

Technical Specifications

General Unit Data

Flame Supervision Methods

Ionization Probe Supervision

Details on detector voltage, current, cable length, and insulation resistance.

AC 110 V Supervision

Control Functions

Startup Sequence Requirements

Undervoltage and Polarity Protection

Control Sequence Timing

Fault Handling and Reset

Fault Response Logic

Describes cause-and-effect for faults like erroneous flame signals or loss of flame.

Lockout and Reset Procedures

Details on lockout states, resetting the burner control after faults.

Internal Diagram LGA41

Internal Diagram LGA52/LGA63

Program Sequence Timing

Program Sequence for LGA41

Program Sequence for LGA52/LGA63