Siemens LMV5 Quick Start Manual page 26
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Also See for LMV5:
- Technical instructions (374 pages) ,
- Basic documentation (278 pages) ,
- Manual (39 pages)
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QGO20 O2 Sensor
(LMV52 only)
The QGO20 is a zirconium-oxide O2 sensor that resides in the flue of a burner / boiler. It measures
the residual O2 in the flue on a wet basis enabling O2 control across the firing range.
Please see Section 10-1 for specifications.
Figure 2-5.2 QGO20 O2 Sensor dimensions (inches)
This sensor must be used with one of two available flue gas collectors detailed below. These
stainless steel collectors are normally seal welded into the flue with their bevels pointed downward
to collect flue gas.
NOTES : Notches (2) on the sensor, (1) on the collector flange pointed upward (upstream).
Do not weld the collector into the flue with the sensor bolted to the collector.
The collector must be mounted perpendicular to the flue gas flow. (See figure 2-5.4)
Both sets of holes (QGO20 and collector) must be inside the flue, at least 1/2" away from the inner
surface of the flue.
After welding, the QGO20 can be inserted and bolted to the flue gas collector flange.
Please see Section 10-1 for specifications.
Figure 2-5.3 Flue Gas Collector dimensions (inches)
LMV5 QSG Rev 4
Sec 2
Pg 10
www.scccombustion.com
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