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Siemens LGK16.322A27 User Manual

Siemens LGK16.322A27
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CC1N7785en
20.11.2017
Building Technologies Division
7
785
Burner Controls LOK16...
LGK16...
Burner controls
For gas, oil or dual-fuel forced draft burners of medium to high capacity
For multistage or modulating burners in continuous operation
With air pressure supervision for checked air damper control.
Flame supervision
- LOK16: With silicon detector RAR
- LGK16: With flame detector QRA53/QRA55/ionization probe
Burner control for oil burners or gas burners in accordance with EN 298:2012
Suitable for use with air heaters (WLE)
With self-checking flame signal amplifier
The LOK16.../LGK16... and this Data Sheet are intended for use by OEMs which
integrate the burner controls in their products.
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Siemens LGK16.322A27 Specifications

General IconGeneral
TypeLGK16.322A27
Ignition transformer controlYes
ApplicationBurner control
Gas typeNatural gas
Voltage220-240 V AC
Frequency50-60 Hz
Flame supervisionIonization or UV
Safety time3 seconds
ApprovalEN 298

Summary

Burner Controls Overview

Key Product Features

Summarizes main capabilities like fuel type, capacity, operation modes, and supervision.

Critical Safety and Warning Notices

General Safety Precautions

Essential warnings for handling, installation, and operation to prevent hazards.

Installation and Application Guidelines

Type Summary

LOK16 Type Summary and Switching Times

Lists LOK16 model types, preferred uses, and detailed switching time parameters for oil burners with photocell detectors.

Type Summary (Continued)

LGK16 Type Summary and Switching Times

Lists LGK16 model types, preferred uses, and detailed switching time parameters for various flame detection methods.

Technical Data and Environmental Specifications

General Unit Specifications

Key electrical and physical data for LOK16/LGK16, including voltage, fuse, weight, and protection rating.

Flame Supervision Technical Details

Detector Current and Cable Specifications

Provides operating voltages, current limits, and maximum cable lengths for various flame detectors.

Detector Current Measurement Circuits

Illustrates circuits for measuring detector current for LOK16/RAR9 and LGK16/QRA5x, with important notices.

Detector Current Measurement Diagrams

LGK16 Ionization Probe Measurement

Shows the circuit diagram for measuring ionization probe current with the LGK16 control.

Functional Principles

Self-Supervision Mechanism

Explains how the self-checking flame supervision circuit operates and detects faults.

Burner Startup Requirements

Lists the necessary conditions and checks required for initiating a burner startup sequence.

Burner Startup Program Details

General Startup Sequence Steps

Describes the initial steps of the startup program, including prepurge and ignition timing.

Burner Startup and Operation

Startup for Interrupted Pilot Burners

Explains startup sequence steps and timing parameters for LGK16 with pilot burners.

Fault Detection and Lockout Sequences

Understanding Lockout Indications

Explains various fault symbols and their meanings, indicating startup abortions and lockouts.

Specific Lockout Scenarios

Details lockout causes like loss of flame, air pressure failure, and specific LOK16 behavior after flame loss.

Lockout Indication and Reset Procedures

Lockout Resetting Guidelines

Instructions on how to reset the burner control after a lockout, emphasizing the 10-second limit for the reset button.

Wiring and Connection Diagrams

Wiring Diagrams for LGK16

Detailed Connection Schematics

Burner Control Program Sequences

Program Sequence Examples

Specific Connection Examples

Operational Timings and Lockout Codes

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