System Makeup/Function Description - Siemens LME7 Series Basic Documentation

Building Technologies Division
Infrastructure & Cities Sector
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.U or QRA10....
Gas burner controls to EN 298 : 2003
-
Oil burner controls to EN 230 : 2005
-
For forced draft gas burners to EN 676
-
For forced draft oil burners to EN 267
-
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
Basic Documentation LME7...
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CC1P7105en
29.11.2011