Siemens LFE1-8866 Burner Control
110v 50Hz
The LFE1-8866 burner control is designed for use with forced draft gas and dual-fuel burners of any capacity, in intermittent operation.

The LFE1-8866 and this Data Sheet are intended for use by OEMs which integrate the burner controls in their products.

The LFE1-8866 is designed for the fully automatic control and supervision of single-stage, multi-stage or modulating gas or dual-fuel burners. It is suited for use with expanding flame and interrupted pilot type gas burners. Flame supervision is ensured by means of an ionization probe or a QRA... UV flame detector. Ignition spark proving with a UV flame detector is also possible. When used in connection with a gas valve proving system LDU11... , the control sequence of the LFE1-8866 can be extended to include automatic gas valve proving. All types of burner controls comply with the relevant European standards for gas and oil burners of any capacity.

The LFE1... can control the following burner plant components: fan motor, flue gas fan, air damper, ignition transformer, 1 to 3 fuel valves, load controller and an external lockout warning device.

• Applications in accordance with EN 676: Automatic forced draft burners for liquid fuels
• Type-tested in accordance with EN 298: 2004

• Features
• Prepurge time adjustable between 8 and 63 seconds
• Operation optional with or without postpurging
• Fully automatic control of the air damper, irrespective of the actuator running time
• The air pressure check can be combined with the functional check of the air pressure switch prior to startup
• Ignition optional: direct ignition, with pilot burner, without or with ignition spark proving
• First and second safety time adjustable between 0 and 9 seconds
• Automatic test of the UV flame detector during burner off periods and during the purging times
• Optional semi-automatic start and operation
• Built-in lockout warning lamp
• The program indicator shows continuously the program sequence
• The motor of the sequence switch can be switched off (to simplify burner adjustments)
• The camshaft of the sequence switch can be turned manually
• Optional electrical remote lockout reset