System Makeup / Function Description - Siemens LME7 Series Basic Documentation

Building Technologies
HVAC Products
2

System makeup / function description

The LME7... is a microprocessor-based burner control with matching system compo-
nents 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 gas forced draft burners
in intermittent operation. The flame supervision supervised with ionization probe optional
with UV flame detector QRA2..., QRA4.U or QRA10....
Burner control to EN 298: 2003
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For gas forced draft burners to EN 267 and EN 676
-
Integrated in the LME7... basic unit are:
•
Burner control
•
BCI
•
Only LME72... / LME73...: Control for one actuator
•
Lockout reset button (info button)
•
3 multi color 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 state information's
•
Interface for program module
Figure 2: Example: Modulating gas burner
Basic Documentation LME7...
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CC1P7105en
13.10.2009