Siemens LGB22.330A27 User Manual

CC1N7435en
11.01.2007
Building Technologies
HVAC Products
7
435
Burner Controls LGB...
Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity (typically up to 350 kW), with or without fan, in intermit-
tent operation.
The LGB... and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products!
Use
The LGB... burner controls are used for the startup and supervision of 1- or 2-stage gas
or gas / oil burners in intermittent operation.
Depending on the type of burner control used, the flame is supervised either by an
ionization probe, a blue-flame detector QRC1... for forced draft gas / oil burners, or a
UV detector QRA... (with auxiliary unit AGQ1...A27).
In connection with the respective adapters, the LGB... burner controls replace their
predecessor types LFI7... and LFM1... (also refer to «Replacement types» under «Or-
dering»).
- Automatic forced draft burners for gaseous fuels to EN 676
- Gas burner controls to EN 298
- Undervoltage detection
- Air pressure supervision with function check of the air pressure switch during
startup and operation
- Electrical remote reset facility
- LGB41... for use with atmospheric gas burners

Siemens LGB22.330A27 Specifications

General

Brand	Siemens
Model	LGB22.330A27
Category	Control Unit
Language	English

Summary

Burner Controls

Warning notes

Mounting notes

Installation notes

Guidelines for safe and compliant installation, including wiring, earthing, and cable routing.

Electrical connection of flame detectors

Commissioning notes

Essential safety checks and procedures to perform when starting up the system for the first time.

Technical data

Flame supervision

Flame supervision with ionization probe

Details how ionization current is used for flame detection and the required operating parameters.

Flame supervision with blue-flame detector

Explains using the QRC1... detector for blue-burning flames, covering its circuit and operational data.

Flame supervision with UV detector

Functions

Startup and Safety Conditions

Timing Parameters

Control sequence in the event of fault

Lockout

Details the conditions that cause lockout and how the system behaves in this state.

Lockout and control sequence indication

Connection diagrams

Internal diagram and time diagram of the programming mechanisms

LGB21...

LGB22... / LGB32...

LGB41...