
Siemens Burner Controls LMV27
Siemens Burner Controls LMV27 Series is a microprocessor-based burner management system designed for medium- to high-capacity forced draft gas or oil burners. It features integrated electronic fuel/air ratio control for up to two actuators, gas valve proving, and flame supervision. With Modbus communication and compatibility with Siemens AZL display units and ACS410 software, the LMV27 is suitable for industrial boilers and heating applications requiring coordinated combustion control.
Product Details
Siemens Burner Controls LMV27
Siemens Burner Controls LMV27 Series
Siemens LMV27 Series is a microprocessor-based burner management system designed for the control and supervision of medium- to high-capacity forced draft burners. It supports single-fuel gas or oil burners operating in intermittent mode.
The LMV27 integrates burner sequence control, flame supervision, electronic fuel/air ratio control, and gas valve proving into one burner management platform. The system supports up to two actuators for coordinated combustion control.
Key Features
- Microprocessor-based burner management system
- Designed for single-fuel gas or oil burners
- Electronic fuel/air ratio control
- Supports up to two SQM3... or SQN1... actuators
- Integrated gas valve proving system
- Flame supervision using compatible QRA, QRB, QRC or ionization detectors
- Integrated Modbus communication interface
- Burner Communication Interface (BCI) for display and PC connectivity
- Parameter configuration through display units or Siemens ACS410 software
Industrial Applications
Siemens LMV27 is intended for OEM manufacturers and qualified burner system integrators. Typical applications include:
- Industrial steam boilers
- Gas burner systems
- Oil burner systems
- Industrial heating equipment
- Combustion systems requiring coordinated fuel and air control
Compatible System Components
- Display Units: Siemens AZL21 and AZL23
- Actuators: Siemens SQM33 and SQN1 Series
- Flame Detectors: QRA2, QRA4, QRA10, QRB, QRC and ionization probes, subject to model compatibility
- PC Software: Siemens ACS410
- Communication Interfaces: OCI410 and OCI412.10
Note: Component selection, parameter settings, and system commissioning must follow the applicable Siemens technical documentation and be performed by qualified personnel.

Technical Specifications
Siemens LMV27 Technical Specifications
| Brand | Siemens |
|---|---|
| Product Series | LMV27 Series |
| Reference Model | LMV27.100A2 |
| Product Type | Burner Management System |
| Control Technology | Microprocessor-based |
| Fuel Type | Gas / Oil (Single-fuel Burner) |
| Operating Mode | Intermittent Operation |
| Supply Voltage | AC 230 V (-15% / +10%) |
| Frequency | 50 / 60 Hz ±6% |
| Power Consumption | <30 W (Typical) |
| Fuel/Air Ratio Control | Electronic |
| Maximum Actuators | 2 |
| Compatible Actuators | SQM3... / SQN1... |
| Gas Valve Proving | Integrated |
| Flame Detectors | QRA2 / QRA4 / QRA10 / QRB / QRC / Ionization Probe |
| Safety Time (Gas) | 3 seconds |
| Safety Time (Oil) | 5 seconds |
| Communication | Modbus / BCI |
| Display Units | AZL21 / AZL23 |
| Configuration Software | Siemens ACS410 |
| Protection Rating | IP00 (Basic Unit) |
| Operating Temperature | -20 to +60 °C |
| Relative Humidity | <95% RH (Non-condensing) |
| Internal Fuse | 6.3 AT |
| Maximum External Fuse | 16 AT |
| Test Standards | EN 230, EN 298, EN 1643, EN 12067-2, EN 13611 |
Technical information is based on Siemens Datasheet CC1N7541en for LMV27.100A2. Installation must follow Siemens requirements. The burner or boiler manufacturer must provide IP40 protection through suitable installation.
Dimensions
Documents & Downloads
Frequently Asked Questions
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