Siemens LOK16.250A27

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.

Siemens LOK16.250A27 Specifications

General

Brand	Siemens
Model	LOK16.250A27
Category	Control Systems
Language	English

Summary

Burner Controls Overview

Safety and Installation Warnings

Mounting and Configuration Notes

Installation and Commissioning Procedures

Electrical Connection of Flame Detectors

Instructions for wiring flame detectors to burner controls.

Regulatory Compliance and Standards

Burner Control Type Specifications

Burner Control Type Specifications (Continued)

Technical Specifications: General and Environmental

General Unit Data

Key specifications for LOK16 and LGK16 burner controls, including voltage, fuse, and weight.

Technical Specifications: Flame Detection

Flame Supervision Parameters

Operating voltage, current requirements, and cable lengths for flame supervision.

Detector Current Measurement Circuits

Technical Specifications: Detector Measurement Details

LGK16 Detector Wiring

Burner Control Functionality

Principle of Self-Supervision

Explains dynamic flame signal handling and safety actions.

Burner Startup Prerequisites

Conditions required for initiating a burner startup sequence.

Burner Startup Program Sequence

Burner Startup Program Sequence (Continued)

Fault Detection and Lockout Sequences

Fault Detection and Lockout Sequences (Continued)

Lockout Indication Methods

Visual indicators and sequence switch positions for lockout states.

Connection Diagrams: LOK16 Series

Connection Diagrams: LGK16 Series

Detailed Connection Diagrams

Burner Control Program Timing

LGK16 Program Sequence Timing

LOK16 Program Sequence Timing

Burner Program Sequence Details

Expanding Flame Burner Sequences

Sequence diagrams for burners without pilot burners.

Interrupted Pilot Burner Sequences

Sequence diagrams for burners with pilot burners.

Practical Connection Examples