Siemens Burner Controllers LEC1 /LFE1 Series
Product Description
Siemens Burner Controllers LEC1 Series
Siemens LEC1 Series burner control units are designed for the automatic startup and supervision of forced-draft oil and gas burners. They support double-flame and multi-flame supervision in continuous or intermittent burner operation.
The LEC1 Series operates with separate Siemens flame safeguards, including LAE10, LFE10 and LFE50, depending on the fuel type and flame detection requirements. These units are suitable for industrial boilers and heating systems.
Key Features
- Automatic burner startup and operating sequence control
- Supports double-flame and multi-flame supervision
- Adjustable prepurge time from 8 to 63 seconds
- Adjustable first and second safety times from 0 to 9 seconds
- Supports automatic air damper control and air pressure monitoring
- Safety lockout function in the event of flame failure
- Operating sequence and fault indication through the viewing window
- Electrical remote reset capability
Compatible Flame Safeguards
- LAE10: For intermittent oil burner operation using RAR flame detectors
- LFE10: For gas, oil or dual-fuel burners using ionization probes or QRA UV detectors, as applicable
- LFE50: For continuous or intermittent operation using QRA50 / QRA51 UV detectors
Selection Note: Verify the exact model reference, operating voltage, mains frequency and flame safeguard compatibility before installation. Installation and safety testing must be performed by qualified personnel.
Specifications
Siemens LEC1 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Model | LEC1 Series |
| Product Type | Burner Control Unit |
| Burner Type | Forced Draft Oil & Gas Burner |
| Flame Supervision | Double-Flame / Multi-Flame |
| Rated Voltage | AC 220–240 V or AC 100–110 V, depending on model |
| Mains Frequency | 50–60 Hz ±6% |
| Power Consumption - Startup | 8 VA |
| Power Consumption - Operation | 5 VA |
| Built-in Fuse | T6.3H250V |
| External Fuse | Max. 10 A (Slow) |
| Output Load per Terminal | Max. 4 A (AC3) |
| Total Output Load | Max. 5 A (AC3) |
| Prepurge Time | Adjustable: 8–63 seconds |
| Safety Times | First and second safety times: Adjustable 0–9 seconds |
| Protection Rating | IP40 (subject to mounting) |
| Operating Temperature | -20 to +60 °C |
| Transport Temperature | -50 to +60 °C |
| Relative Humidity | Less than 95% RH |
| Weight | Approx. 2 kg |
| Mounting Position | Any orientation |
| Compatible Flame Safeguards | LAE10 / LFE10 / LFE50 |
| Terminal Base | AGG41041713 (EC) / AGG12.1 (ordered separately) |
Reference: Siemens Data Sheet CC1N7761en. Specifications and factory settings may vary depending on the exact model reference.
Product Specifications
Siemens LEC1 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Model | LEC1 Series |
| Product Type | Burner Control Unit |
| Burner Type | Forced Draft Oil & Gas Burner |
| Flame Supervision | Double-Flame / Multi-Flame |
| Rated Voltage | AC 220–240 V or AC 100–110 V, depending on model |
| Mains Frequency | 50–60 Hz ±6% |
| Power Consumption - Startup | 8 VA |
| Power Consumption - Operation | 5 VA |
| Built-in Fuse | T6.3H250V |
| External Fuse | Max. 10 A (Slow) |
| Output Load per Terminal | Max. 4 A (AC3) |
| Total Output Load | Max. 5 A (AC3) |
| Prepurge Time | Adjustable: 8–63 seconds |
| Safety Times | First and second safety times: Adjustable 0–9 seconds |
| Protection Rating | IP40 (subject to mounting) |
| Operating Temperature | -20 to +60 °C |
| Transport Temperature | -50 to +60 °C |
| Relative Humidity | Less than 95% RH |
| Weight | Approx. 2 kg |
| Mounting Position | Any orientation |
| Compatible Flame Safeguards | LAE10 / LFE10 / LFE50 |
| Terminal Base | AGG41041713 (EC) / AGG12.1 (ordered separately) |
Reference: Siemens Data Sheet CC1N7761en. Specifications and factory settings may vary depending on the exact model reference.
Company Information
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