SIEMENS LFL1.322 Gas Burner Program Controller | Replacement, Equivalent & Selection Guide
The SIEMENS LFL1.322 is a microprocessor-based gas burner program controller designed for automatic forced-draft gas burners. It governs the complete start-up, operation, and shutdown sequence of the burner, providing reliable flame supervision and fault lockout protection. This page serves as a comprehensive selection, replacement, and compatibility reference for engineers, procurement specialists, and maintenance teams.
Technical Specifications
| Manufacturer | Siemens Building Technologies |
| Model / Part No. | LFL1.322 |
| Function | Gas Burner Program Controller (Automatic Burner Control) |
| Supply Voltage | 220 / 240 V AC, 50 / 60 Hz |
| Power Consumption | ≤ 10 VA |
| Safety Class | EN 298 / EN 230 compliant |
| Pre-purge Time | Approx. 26 s (fixed) |
| Safety Time (1st flame) | 3 s |
| Flame Detector Input | Ionization electrode / UV detector (QRA-series compatible) |
| Lockout Indication | Red LED + manual reset button |
| Ambient Temperature | -20 °C … +60 °C |
| Protection Class | IP 40 |
| Mounting | DIN rail or direct panel mount |
| Weight | Approx. 1,200 g (with base) |
| Certifications | CE, UL (market-dependent) |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or functional replacements for the LFL1.322. Always verify wiring diagrams and timing parameters before substitution.
| Model | Brand | Compatibility Notes |
|---|---|---|
| LFL1.322 | Siemens | Original — reference unit |
| LFL1.333 | Siemens | Extended pre-purge variant; same base platform |
| LFL1.335 | Siemens | Longer safety time; verify application suitability |
| LME11.330C2 | Siemens | Next-generation successor; requires wiring adaptation |
| LME21.330C2 | Siemens | Advanced diagnostics; drop-in for most LFL1 bases |
| BC1000 | Brahma | Functional equivalent; confirm terminal mapping |
| G20 / G30 Series | Honeywell / Resideo | Cross-reference required; different base connector |
⚠ Disclaimer: Replacement suitability depends on burner OEM specifications. Consult the burner manual or contact Konmask technical support before substitution.
Why Choose the Original Model
- Proven reliability — LFL1 series has decades of field deployment in industrial and commercial heating systems.
- OEM compliance — Many burner manufacturers specify LFL1.322 by part number; using the original avoids warranty and certification issues.
- Exact timing parameters — Pre-purge and safety times are factory-set to match EN 298 requirements without field adjustment.
- Seamless base compatibility — Plugs directly into AGG5.635 / AGG5.640 bases with no wiring modification.
- Siemens global support — Firmware, documentation, and spare parts backed by Siemens worldwide service network.
Typical Applications
- Industrial forced-draft gas burners (single-stage and two-stage)
- Commercial boilers and hot-water generators
- Process heating furnaces and ovens
- District heating plants and CHP pre-heaters
- Drying systems in food, textile, and chemical industries
- Replacement / retrofit of legacy Landis & Gyr LFL controllers
System Compatibility
- Flame detectors: Ionization electrode; UV detectors QRA2, QRA4, QRA10, QRA55 (with QRA adapter)
- Mounting bases: AGG5.635, AGG5.640 (Siemens standard bases)
- Gas valves: VGG, VGD, SKP series (Siemens); standard 220 V AC solenoid valves
- Air pressure switches: Standard SPDT pressure switch input (terminals 4 & 5)
- Burner OEM compatibility: Riello, Weishaupt, Baltur, Oilon, Bentone, and other major European burner brands
Selection Guide
Use the criteria below to confirm the LFL1.322 is the correct choice, or to identify the appropriate alternative:
- Fuel type: Gas only → LFL1.322 ✓ | Oil or dual-fuel → consider LOA / LAL series
- Burner stages: Single-stage or two-stage → LFL1.322 ✓ | Modulating → consider LMV series
- Pre-purge requirement: ~26 s fixed → LFL1.322 ✓ | Adjustable pre-purge → LFL1.333 or LME series
- Safety time: 3 s → LFL1.322 ✓ | 5 s → LFL1.335
- Flame detector: Ionization or QRA UV → LFL1.322 ✓ | QRB infrared → not compatible, use LOA series
- Diagnostics: Basic LED lockout → LFL1.322 ✓ | Advanced fault codes → LME21 / LMV series
- Supply voltage: 220–240 V AC → LFL1.322 ✓ | 120 V AC → consult Siemens North America variants
Quality Assurance & Sourcing
- All units supplied by Konmask.com are sourced from authorized distributors or verified OEM channels.
- Each unit undergoes incoming inspection: label verification, date-code check, and functional pre-test where applicable.
- Original manufacturer packaging, documentation, and holographic seals are preserved.
- Traceability records (batch/lot, origin) available on request for MRO and EPC procurement teams.
- Export compliance: HS Code 8537.10 — please confirm import regulations for your destination country.
How to Order
- Online: Add to cart directly from this page — stock availability shown in real time.
- Bulk / project inquiry: Email support@konmask.com with quantity, delivery location, and required lead time.
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead time: In-stock orders ship within 1–3 business days; special-order items 7–21 days.
- Payment: T/T bank transfer, PayPal, credit card (via Shopify Payments), and L/C for large orders.
Replacement & Compatibility FAQ
Q: Can I replace LFL1.322 with LME11.330C2 directly?
A: The LME11 uses the same AGG5 base but has different terminal assignments for some auxiliary functions. A wiring review is required — contact us for a free compatibility check.
Q: Is LFL1.322 still in production?
A: Siemens has transitioned to the LME series as the primary product line. LFL1.322 is available as a service/spare part. Konmask maintains stock to support legacy installations.
Q: What is the difference between LFL1.322 and LFL1.333?
A: The LFL1.333 has an extended pre-purge time (~38 s vs ~26 s). All other parameters are identical. Choose LFL1.333 if your burner OEM or local regulation requires a longer purge cycle.
Q: Can LFL1.322 work with oil burners?
A: No. LFL1.322 is designed exclusively for gas burners. For oil burners, use the LOA series (e.g., LOA24.171B27).
Q: Do you provide a warranty?
A: Yes — 12 months from date of shipment against manufacturing defects, with DOA replacement within 7 days of receipt.
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Contact: support@konmask.com | +0086 19859288691
