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Building Technologies Basic Documentation LME7... CC1P7105enr
2 System makeup / function description 17.04.2018
2 System makeup / function description
The LME7 is a microprocessor-based burner control with matching system components
for the control and supervision of forced draft burners of medium to high capacity.
LME7 are used for the startup and supervision of 1- or 2-stage forced draft burners in
intermittent operation. The flame is supervised with an ionization probe, optionally with
flame detector QRA2, QRA4 or QRA10.
∂ Applications in accordance with EN 267: Gas burners for liquid fuels
∂ Applications in accordance with EN 676: Automatic forced draft burners for
gaseous fuels
∂ Applications in accordance with EN 746-2: Industrial thermoprocessing equipment -
Part 2: Safety requirements for combustion and fuel handling systems
∂ Type-tested and approved in accordance with DIN EN 298
Integrated in the LME7 basic unit are:
∂ Burner control
∂ BCI for connection a display or PC
∂ Only LME72 / LME73: Control for one actuator
∂ Lockout reset button (info button)
∂ 3 multicolor signal lamp LED for operations and fault notifications
∂ Optional: Analog inputs for load controller DC 0...10 V, DC 0/4...20 mA, 0...135 Ω
∂ 3 x 7-segment display for service, fault and operating state information
∂ Interface for program module
Figure 2: Example: Modulating gas burner
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