Siemens LMG22.330A27 User Manual

Landis & Staefa Division CC1N7421E December 04, 1998 1/16
7
421
Burner Controls LMG2...
Burner controls for the supervision of single- or two-stage forced draught gas or
gas / oil burners of small to medium capacity (typically up to 350 kW) in
intermittent operation.
The burner controls are certified to EN 230 and EN 298.
They carry the CE mark based on the directives for gas appliances and
electromagnetic compatibility.
The LMG2... and this data sheet are intended for use by OEMs which integrate the
burner controls in their products.
Burner controls of the LMG2... range are used for startup and supervision of single- or
two-stage gas or gas / oil burners in intermittent operation.
The flame is supervised with a detector electrode or UV flame detector QRA... (with
ancillary unit AGQ2...A27).
LMG21... / LMG22... in the same housing replace burner controls LGB21... / LGB22...
(refer to «Type summary») and, with the help of the respective adapters, burner controls
LFI7... and LFM1... (refer to «Ordering»).
Application-specific features
–
Detection of undervoltages
–
Air pressure supervision with function check of air pressure monitor during startup
and operation
–
Electric remote reset
–
Indication of error code and flame signal by means of LEDs in the lockout reset button
–
Precise program times thanks to digital processing of signals
Available versions
•
LMG21... / LMG22... For unlimited burner capacities (output on startup ≤ 120 kW)
Locking in the event of loss of flame during operation
•
LMG25... For burner capacities ≤ 120 kW
Three repetitions in the event of loss of flame during
operation
ISO 9001
Use

Siemens LMG22.330A27 Specifications

General

Brand	Siemens
Model	LMG22.330A27
Category	Controller
Language	English

Summary

Burner Control Introduction

Application and Features

Details LMG2... application for gas/oil burners and lists key features like undervoltage detection.

Available Versions

Outlines the different available versions of the LMG2... burner control models.

Safety and Technical Notes

Safety Precautions

Crucial safety precautions to avoid personal injury and damage to property or the environment.

Technical Notes

Provides engineering, mounting, and installation guidance for burner controls.

Detector Connections and Mechanical Design

Electrical Connection Guidelines

Guidance on achieving loss-free signal transmission for detector connections.

Mechanical Design Details

Describes the plug-in design and housing made of impact-resistant plastic.

Plug-in Base

Details the plug-in base made of heat-resistant plastic with screw terminals.

Type Summary

Ordering Information

Accessories and Ancillaries

Details of accessories like plug-in bases, cable holders, RC units, ancillary units, and compatible actuators.

Replacement Types

Provides adapter types for replacing predecessor models with new burner controls.

Technical Data

Flame Supervision (Detector Electrode)

Measuring Circuit

Diagram illustrating the measuring circuit for detector currents using a microammeter.

Flame Supervision (UV Detector)

Ancillary Unit and Circuits

Details the UV ancillary unit and presents connection/measurement circuits for UV detector supervision.

Functions and Operation

Startup and Operation Conditions

Conditions for startup, behavior during undervoltage, operation cycles, and polarity protection.

Fault Handling and Reset

Describes fault response, lockout conditions, and how to reset the burner control.

Connection Diagrams (LMG21/LMG25)

Application Examples

Illustrates application examples for two-stage or modulating burners with LMG21/LMG25.

Connection Diagrams (LMG22)

Application Examples

Illustrates application examples for two-stage or modulating burners with LMG22.

Additional Application Examples

Diagram Legend

Operating Concept and Fault Diagnosis

Fault Diagnosis Methods

Methods for diagnosing faults using blink codes and the comprehensive error code table.

Flame Establishment Time Diagnostics

Diagnostics Table

Table correlating blink codes with flame establishment times for different TSA settings.

Internal Circuit Diagrams

Physical Dimensions

Unit and Component Dimensions

Provides physical dimensions for the burner control, plug-in base, and ancillary unit.