Siemens LMV26

Service manual
AZL2x - LMV2x/3x
Burner Management System
M
12916CD Rev. 3.4 03/2023

Siemens LMV26 Specifications

General

Series	LMV
Application	Burner control
Frequency	50/60 Hz
Protection Class	IP40
Output Voltage	24 V DC

Summary

Dangers, Warnings, and Notes of Caution

General Introduction

General installation and usage precautions.

Special Instructions for Burners

Specific instructions for burner installation and use.

General Instructions Depending on Fuel Used

Directives and Standards

Symbols Used Explanation

Explanation of warning and danger symbols used in the manual.

Microprocessor Controlled System Overview

User Interface Description

Description of the AZL2x display and programming unit.

Parameters Level for Heating Engineers

Internal Parameters (Password Level)

Burner Control Parameters

Parameters for burner operation control.

FuelAir Ratio Control Curves

Settings for air/fuel ratio control curves.

Setting Menu Structure

Block 000: Internal Parameters

Block 200: Burner Control

Parameters for burner operation control.

Internal Parameter Block

Parameter 041: Heating Engineer Password

Parameter 042: OEM Password

Parameter 050: Start BackupRestore

Procedure for backing up and restoring configurations.

Burner Control Block

Parameter 201: Burner Operating Mode

Setting the burner's operating mode (fuel train).

Burner Control Block for LMV26

Parameter 301: Fuel 1 Operating Mode

Setting the operating mode for Fuel 1.

Setting AirFuel Ratio Curves

Parameter 401: Fuel Actuator Ratio Curve

Setting curves for the fuel actuator.

Parameter 402: Air Actuator Ratio Curve

Setting curves for the air actuator.

Parameter 403: VSD Ratio Curves

Settings for VSD ratio curves.

AirFuel Ratio Control

Parameter 501: No-Flame Fuel Actuator Position

Parameter 502: No-Flame Air Actuator Position

Parameter 503: No-Flame VSD Speeds

Actuators Configuration

Parameter 601: Reference Point Setting

Setting the reference point for actuators.

Parameter 602: Actuator Rotation Direction

Setting the rotation direction of actuators.

Error History Block

Parameter 701: Error Code

Parameter 701: Diagnostic Code

Process Data Block

Parameter 903: Current Output

Parameter 922: Incremental Actuator Position

Parameter 954: Flame Intensity

Displays the intensity of the flame.

Actuator References and Referencing

Gas Proving System

Commissioning the Burner

Main Parameters for Programming

Key parameters for burner programming.

Initial LMV Startup Display

What the display shows on first startup.

Warm Setting Procedure

Adjusting AirFuel Ratio

How to adjust air/fuel ratio for optimal combustion.

Setting High Flame Point (P9)

Configuring the maximum output point.

Cold Setting Procedure

Checking Curve Points

Verifying curve points during setting.

Burner Startup with Pre-programmed LMV2 x

Burner Startup Cycle Phases

Overview of the burner startup sequence phases.

Reset and Manual Lockout Functions

Entering Parameter Levels

Info Level Access and Parameters

Burner Locked Out Message

Interpreting lockout messages and error codes.

Service Level Access and Information

Service Level Parameters

Backup Parameter Procedure

Restore Parameter Procedure

Error Code Table Overview

Error Code 2: No Communication

Meaning and remedy for communication errors.

Error Code 3: Air Pressure Failure

Meaning and remedy for air pressure issues.

Error Code 4: Extraneous Light

Meaning and remedy for extraneous light detection.

Error Code Table - Valve and Pressure Switches

Error Code 12: Valve Proving

Meaning and remedy for valve proving errors.

Error Code 14: POC Open - Start Prevention

Error Code 19: Combustion Pressure, POC

Error Code Table - Safety and Internal Errors

Error Code 22: Safety Loop Burner Flange

Meaning and remedy for safety loop/flange issues.

Error Code Table - Fuel and Ratio Control

Error Code 58: Internal Error (Fuel Changeover)

Error Code 61: Invalid Fuel Signals

Error Code 70: Internal Error Fuel-Air Ratio Control

Meaning and remedy for fuel-air ratio control errors.

Error Code Table - VSD and Control Limitations

Error Code 75: Internal Error Fuel-Air Ratio Control (Data Clocking)

Error Code 80: Control Range Limitation of VSD

Meaning and remedy for VSD control range limitations.

Error Code Table - VSD Standardization

Error Code 82: Error During VSD Speed Standardization

Meaning and remedy for VSD standardization errors.

Error Code 82, Bit 4: Wrong Direction of Rotation

Meaning and remedy for incorrect motor rotation.

Error Code 82, Bit 5: Excessive Speed Deviation

Meaning and remedy for speed deviation issues.

Error Code Table - Phase and Actuator Referencing

Error Code 20: Wrong Phase of Phase Manager

Error Code 21: Safety Loop Burner Flange Open

Meaning and remedy for open safety loop/flange.

Error Code 22: Air Actuator Not Referenced

Meaning and remedy for unreferenced air actuator.

Error Code Table - Actuator Curve Slopes

Error Code 83: Speed Error VSD

Meaning and remedy for VSD speed errors.

Error Code 83, Bit 3: Curve Too Steep in Terms of Ramp Speed

Meaning and remedy for steep ramp speed curves.

Error Code Table - Actuator Referencing Errors

Error Code 84: Curve Slope Actuators

Meaning and remedy for actuator curve slope issues.

Error Code 85: Referencing Error Fuel Actuator

Error Code 85: Referencing Error Air Actuator

Error Code Table - Actuator and Signal Errors

Error Code 87: Error Air Actuator (Position Error)

Error Code 93: Error Flame Signal Acquisition

Error Code 95: External Power Supply NO Contact

Error Code Table - Backup and Restore Issues

Error Code 137: Internal Error - BackupRestore

Error Code 137, 157: Restore OK, Backup Smaller

Error Code 137, 245: Access Error to Parameter Restore Complete

Error Code Table - TV Test and Locking

Error Code 150: TV Test

Error Code 167: Unit Manually Locked

Error Code Table - Startup and Version Compatibility

Error Code 201: Prevention of Startup

Error Code 202: Internal Error Operating Mode Selection

Error Code 207: Version Compatibility

Wiring Diagram

Electrical Supply Connections

Actuator and Sensor Connections