SIEMENS LMO14.111C2 Oil Burner Controller

SIEMENS

Description

The SIEMENS LMO14.111C2 is a high-performance, microcontroller-based oil burner controller manufactured in Germany, designed as a core safety and control component for single-stage forced-draft oil burners in commercial and industrial heating systems. As a genuine Siemens OEM part, it delivers fully automatic ignition, flame supervision, operational control, and fault protection for oil-fired boilers, burners, and heating equipment, fully complying with EN230 and EN267 safety standards.

Product Details

Operating on a 230V AC, 50-60Hz power supply, this controller features a maximum ignition safety time (TSA) of 10 seconds, ensuring the system automatically cuts off fuel supply and locks out if no flame is detected within the safe window, preventing explosion hazards. It is compatible with QRB/QRC series flame detectors, supporting oil burners with a maximum throughput of up to 30 kg/h, and is widely used with BALTUR and other leading burner brands.

Additional functions include remote reset, oil preheater control, preheating time monitoring, 24-hour intermittent operation, and multi-color status indication for easy on-site troubleshooting. With a robust design rated IP40, an operating temperature range of -30°C to +70°C, and 12VA power consumption, the LMO14.111C2 ensures reliable, efficient, and safe operation in demanding industrial heating, boiler, and HVAC applications, making it an essential component for combustion system reliability and compliance.

The SIEMENS LMO14.111C2 is a state-of-the-art oil burner control unit engineered for the startup, continuous supervision, and safety protection of single-stage forced-draft oil burners in intermittent operation. As a member of the Siemens LMO14 series, this microcontroller-based controller is the industry standard for reliable combustion control in commercial and industrial heating systems, including boilers, furnaces, and HVAC units.

Key Functional Features

Automatic Combustion Control: Manages the entire burner startup sequence, including pre-purge, ignition, fuel valve activation, and post-ignition monitoring, ensuring compliance with strict safety regulations.
Flame Supervision & Safety Lockout: Works seamlessly with QRB/QRC series flame sensors to continuously monitor flame presence. If no flame is detected within the 10-second maximum ignition safety time (TSA), the controller immediately shuts down the fuel supply and enters a lockout state, preventing dangerous fuel accumulation.
Advanced System Integration: Supports remote reset functionality for convenient maintenance, oil preheater control with configurable preheating time monitoring, and low-voltage protection to ensure stable operation under fluctuating power conditions.
Diagnostic & Operational Flexibility: Equipped with a multi-color LED indicator for real-time status display and fault diagnosis, and supports 24-hour intermittent operation to meet cyclic heating requirements.
Robust Industrial Design: Manufactured in Germany with strict quality control, featuring IP40 protection (ensured via proper mounting), a wide operating temperature range of -30°C to +70°C, and resistance to vibration and thermal shock, ensuring long-term reliability in harsh industrial environments.

Application Scenarios

This controller is specifically designed for single-stage oil burners with a maximum oil throughput of ≤30 kg/h, and is a direct replacement for original equipment in burners from leading brands such as BALTUR. It is widely deployed in commercial boilers, industrial heating systems, process heating equipment, and HVAC systems, ensuring safe, efficient, and compliant combustion operation.

Parameter	Specification
Model Number	LMO14.111C2
Product Type	Oil Burner Controller / Program Controller
Brand	Siemens AG
Power Supply	230V AC, 50-60Hz
Power Consumption	12 VA
Ignition Safety Time (TSA)	Max. 10s
Burner Type	1-Stage Forced Draft Oil Burner
Max. Oil Throughput	≤ 30 kg/h
Compatible Flame Detector	QRB, QRC Series
Protection Class	IP40 (to be ensured by mounting)
Safety Class	I
Operating Temperature Range	-30°C to +70°C (-22°F to +158°F)
Humidity Range	< 95% RH, non-condensing
External Fuse	6.3A Slow Blow
Max. Cable Length (Power)	3m (100pF/m)
Max. Cable Length (Detector/Remote Reset)	20m
Weight	Approx. 200g
Origin	Made in Germany
Compliance Standards	EN230, EN267, CE, DIN