Siemens LFL1.322 User Manual

CC1N7451en
20.11.2017
Building Technologies Division
7
451
Burner Controls LFL1...
Burner controls
 For gas, oil or dual-fuel forced draft burners of medium to high capacity
 For multistage or modulating burners in intermittent operation
 With checked air damper control
 Flame supervision
– with UV detectors QRA2 / QRA4 / QRA10
– and ionization probe
The LFL1... and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products!
Use
 Control and supervision of forced draft burners of direct spark flame or interrupted
pilot construction
 For medium to high capacity
 For intermittent operation (at least one controlled shutdown every 24 hours)
 For universal use with multistage or modulating burners
 For use with stationary air heaters (WLE)
 For use with dual-fuel burners
 Type-tested and approved in accordance with DIN EN 298
The flame supervision is ensured via a flame detector QRA2 / QRA4 / QRA10 or
ionization probe. The difference between 01 series and 02 series is the duration of the
safety time for the pilot burner of burners equipped with pilot gas valves.
For atmospheric burners of high capacity, use the LFL1.638.

Siemens LFL1.322 Specifications

General

Brand	Siemens
Model	LFL1.322
Category	Controller
Language	English

Summary

Burner Controls

Supplementary Documentation and Safety

Critical Safety Warnings

Critical safety instructions to avoid injury, property damage, or environmental harm.

Application and Commissioning Notes

Commissioning Safety Checks

Essential safety checks before plant commissioning or maintenance.

Standards and Certifications

Applicable Directives and Standards

Overview of applicable directives, standards, and conformity marks.

Technical Data - General and Environmental

General Unit Specifications

Specifications for mains voltage, frequency, fuses, weight, and power.

Environmental Condition Requirements

Technical Data - Flame Supervision

Ionization Probe Supervision Data

UV Detector Supervision Data

Functionality Overview

Burner Operation Modes

Functional descriptions for different burner configurations.

Detailed Functionality and Safety

General Safety Features

Additional safety features and their operation.

Burner Control Operation

How the burner control manages fan motors, valves, and actuators.

Flame Supervision and Startup Preconditions

Details on flame supervision methods and startup preconditions.

Preconditions for Burner Startup

Startup Signal Requirements

Conditions and signals required for a successful burner startup.

Startup Sequence - Direct Spark

Startup Command and Pre-Purge

Initial steps of the startup sequence including command and prepurge.

Direct Spark Flame Ignition Timing

Ignition safety time and preignition for direct spark burners.

Startup Sequence - Interrupted Pilot

Interrupted Pilot Ignition Timing

Burner Operation and Shutdown Phases

Fault Conditions and Lockout

Lockout Indicator Symbols

Lockout Reset Procedure

Connection Examples and Program Sequences

Program Sequences - Advanced Configurations