Siemens LME39 Series Gas Burner Controllers
Product Description
Siemens Burner Controllers LME39 Series
Siemens LME39 Series consists of automatic gas burner control units designed to manage the startup, ignition, flame supervision and safe shutdown of small- to medium-capacity single- or two-stage gas burners operating in intermittent mode. These controllers can be used in appropriate burner configurations with or without a fan.
Using microcontroller technology and digital signal processing, LME39 provides repeatable burner operating sequences and integrated safety monitoring. Configurable program parameters allow qualified personnel to adapt supported functions and timing values to the burner application.
Key Features
- Automatic control for single- and two-stage gas burners
- Flame supervision with an ionization probe or a compatible QRA UV detector and AGQ3 ancillary unit
- Digital processing for accurate burner sequence control
- Integrated undervoltage monitoring
- Air pressure supervision according to the selected program and configuration
- Multicolor LED for operating status and fault identification
- Electrical remote lockout reset
- Configurable limitation of restart attempts
- Controlled intermittent operation after a maximum of 24 hours
- Parameterization and diagnostics through AZL2 or Siemens ACS410 with compatible interface equipment
Available Models
- LME39.100C1: AC 120 V, maximum ignition safety time 3 s
- LME39.100C2: AC 230 V, maximum ignition safety time 3 s
- LME39.400C1: AC 120 V, maximum ignition safety time 5 s
- LME39.400C2: AC 230 V, maximum ignition safety time 5 s
The .100 and .400 variants have different program sequences and purge timing definitions. Choose the correct model according to the required burner sequence and safety parameters.
Flame Detection and Accessories
- Ionization Probe: Flame supervision for compatible gas burner systems
- QRA UV Flame Detector: Supported with AGQ3 ancillary unit on compatible AC 230 V configurations
- AGK11.6: Plug-in terminal base, ordered separately
- AZL2 / ACS410: Parameter setting and diagnostic tools with compatible accessories
Typical Applications
- Industrial gas-fired steam and hot water boilers
- Gas-fired heating equipment
- Single-stage and two-stage gas burners
- Gas burner systems requiring flame supervision and air pressure monitoring
- Intermittent industrial gas combustion systems
Selection Guidelines
Before selecting or replacing an LME39 controller, verify the complete model number, supply voltage, flame detector compatibility, wiring, air pressure supervision, safety time and required operating sequence.
Safety Note: Installation, commissioning and safety-related parameter adjustments must be carried out by qualified personnel in accordance with the applicable Siemens technical documentation.
Specifications
Siemens LME39 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Series | LME39 Series |
| Product Type | Gas Burner Controls |
| Burner Type | 1-/2-Stage Gas Burners |
| Operating Mode | Intermittent Operation |
| Supply Voltage | AC 120 V +10%/-15% (C1 models); AC 230 V +10%/-15% (C2 models) |
| Supply Frequency | 50-60 Hz |
| Power Consumption | 12 VA |
| Flame Detection | Ionization Probe or QRA UV Detector with AGQ3 ancillary unit (UV supervision only on compatible AC 230 V models) |
| Flame Failure Response Time | Max. 1 s |
| Operating Temperature | -20 to +60 °C |
| Relative Humidity | <95% RH |
| Degree of Protection | IP40 when correctly installed; IP10 with uncovered RJ11 jack |
| Safety Class | Class I with suitable plug-in base |
| Weight | Approx. 160 g |
| External Primary Fuse | 6.3 A slow-blow recommended; follow specified fuse limits |
| Installation Altitude | Max. 2,000 m above sea level |
| Plug-in Base | AGK11.6 (separately ordered) |
| Parameterization | AZL2 / ACS410 with compatible interface accessories |
| Applicable Standards | DIN EN 298, DIN EN 13611, DIN EN 60730-2-5 |
| Technical Reference | Siemens CC1N7106en (19.03.2024) |
Model Variants and Program Timing
| Model | Voltage | Safety Time (TSA) | Prepurge / Purge |
|---|---|---|---|
| LME39.100C1 | AC 120 V | Max. 3 s | t1: Min. 30 s |
| LME39.100C2 | AC 230 V | Max. 3 s | t1: Min. 30 s |
| LME39.400C1 | AC 120 V | Max. 5 s | t1': Min. 14.5 s |
| LME39.400C2 | AC 230 V | Max. 5 s | t1': Min. 14.5 s |
Technical Note: t1 means prepurge time, while t1' means purge time. The listed values are manufacturer type-summary requirements, not necessarily the programmed values after commissioning. The AGK11.6 plug-in base and flame detector are ordered separately. Consult Siemens CC1N7106en before installation or replacement.
Product Specifications
Siemens LME39 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Series | LME39 Series |
| Product Type | Gas Burner Controls |
| Burner Type | 1-/2-Stage Gas Burners |
| Operating Mode | Intermittent Operation |
| Supply Voltage | AC 120 V +10%/-15% (C1 models); AC 230 V +10%/-15% (C2 models) |
| Supply Frequency | 50-60 Hz |
| Power Consumption | 12 VA |
| Flame Detection | Ionization Probe or QRA UV Detector with AGQ3 ancillary unit (UV supervision only on compatible AC 230 V models) |
| Flame Failure Response Time | Max. 1 s |
| Operating Temperature | -20 to +60 °C |
| Relative Humidity | <95% RH |
| Degree of Protection | IP40 when correctly installed; IP10 with uncovered RJ11 jack |
| Safety Class | Class I with suitable plug-in base |
| Weight | Approx. 160 g |
| External Primary Fuse | 6.3 A slow-blow recommended; follow specified fuse limits |
| Installation Altitude | Max. 2,000 m above sea level |
| Plug-in Base | AGK11.6 (separately ordered) |
| Parameterization | AZL2 / ACS410 with compatible interface accessories |
| Applicable Standards | DIN EN 298, DIN EN 13611, DIN EN 60730-2-5 |
| Technical Reference | Siemens CC1N7106en (19.03.2024) |
Model Variants and Program Timing
| Model | Voltage | Safety Time (TSA) | Prepurge / Purge |
|---|---|---|---|
| LME39.100C1 | AC 120 V | Max. 3 s | t1: Min. 30 s |
| LME39.100C2 | AC 230 V | Max. 3 s | t1: Min. 30 s |
| LME39.400C1 | AC 120 V | Max. 5 s | t1': Min. 14.5 s |
| LME39.400C2 | AC 230 V | Max. 5 s | t1': Min. 14.5 s |
Technical Note: t1 means prepurge time, while t1' means purge time. The listed values are manufacturer type-summary requirements, not necessarily the programmed values after commissioning. The AGK11.6 plug-in base and flame detector are ordered separately. Consult Siemens CC1N7106en before installation or replacement.
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