Siemens LME44.056A2 User Manual

CC1N7101en
27.11.2008
Building Technologies
HVAC Products
7
101
Burner Controls LME...
Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity, operation, with or without fan in intermittent.
The LME… and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.
Use, features
LME… burner controls are used for the startup and supervision of 1- or 2-stage gas or
gas / oil burners in intermittent operation. The flame is supervised by an ionization
probe or flame detector QRA… with ancillary unit AGQ3…A27 for gas / oil forced draft
burners or blue–burning flames with blue-flame detectors QRC...
In terms of housing dimensions, the LME... are identical with the LGB… and LMG…
burner controls (refer to «Type summary»).
- For gas burners with or without fan to EN 298: 2003
- For gas burners with fans conforming to EN 676
- For oil burners to EN 230: 2005
- Undervoltage detection
- Air pressure supervision with functional check of the air pressure switch during
startup and operation
- Electrical remote reset facility
- Multicolor indication of fault status and operational status messages
- Limitation of the number of repetitions
- Accurate control sequence thanks to digital signal handling
- Controlled intermittent operation after 24 hours of continuous operation
Supplementary documentation
Product Range Overview LME…............................................................................ Q7101
Use
Features

Siemens LME44.056A2 Specifications

General

Brand	Siemens
Model	LME44.056A2
Category	Controller
Language	English

Summary

Burner Controls Overview

Safety and Installation Guidelines

Critical Warning Notes

Essential safety precautions to avoid injury, damage, or environmental harm during handling and operation.

Installation and Wiring

Commissioning Procedures

Safety Checks for Commissioning

Mandatory safety checks during initial commissioning and maintenance work.

Burner Control Type Summary

Type References and Parameters

Table detailing LME burner control types, their parameters, and replacement information.

Technical Data Overview

General Unit Specifications

Flame Supervision Details

Ionization Probe Supervision

Technical data and measuring circuits for flame supervision using ionization probes.

UV Flame Detection

UV Detector and Ancillary Unit

Technical specifications and connection diagrams for UV flame supervision with AGQ3...A27.

Operational Status and Functions

Burner Startup Functions

Fault Handling and Reset

Fault Cause and Response

Detailed sequence of control responses to various fault conditions.

Control Reset and Repetitions

Procedures for resetting the burner control and limitations on startup repetitions.

Operation and Diagnostics

Operating States

Operational Status Indication

Fault Diagnostics

Error Code Diagnostics

Activating and interpreting error codes via the signal lamp for fault cause diagnosis.

LME11 Connection and Sequence

LME21 Connection and Sequence

LME22/23 Connection and Sequence

LME41 Connection and Sequence

LME44 Connection and Sequence