Azbil AUD300C1000 - Chapter 2. MOUNTING; Before Mounting this Unit; Monitoring of Burner Flame

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WARNING
Before removing, mounting, or wiring the AUD300C, be sure to turn off the AUD300C and all con-
nected devices. Failure to do so might cause electric shock.
Make sure that this device does not detect ultraviolet rays other than those of the burner flame. If
it responds to other ultraviolet rays, flame failure in the burner will not be detected. As a result, fuel
will continue to be discharged, causing a very serious explosion hazard.
CAUTION
Only authorized personnel who have the technical skill about the combustion equipment and
flame safeguard control must carry out the mounting, wiring, inspection, adjustment, and mainte-
nance work.
If this unit is operated in an atmosphere where any steam, smoke, oil mist, dust, and/or organic sol-
vent exist that hinder the penetration of ultraviolet rays, take appropriate corrective measures.
When using multiple burners, mount this unit at a position where it detects the flame of only the
burner to be monitored.
Before mounting this unit n
• To mount this unit correctly, thoroughly read the instruction manuals published
by burner, boiler, and/or other equipment manufacturers. Make the proper
mounting plan while referring to such instruction manuals.
• It is necessary that this unit actually monitors the flame. As long as the overall
layout and temperature around the burner and other limitations permit, mount
this unit as close to the flame as possible. As this unit is mounted closer to the
burner nozzle, the detection amount of the ultraviolet ray radiation will increase.
• Mount this unit at a position far from the ignition transformer.
Additionally, mount the ignition transformer as close to the burner as possible,
and then ground it firmly.
Monitoring of burner flame n
Monitoring of only pilot flame (continuous pilot or intermittent pilot) ●
The main burner must be ignited firmly with the minimum pilot flame that this
unit can detect. Therefore, throttle the pilot fuel manual valve until the main
burner is ignited barely. Mount this unit under these conditions so that the unit
monitors only the top of the pilot flame. Put the monitoring area as close to the top
of the flame as possible so that the unit monitors the pilot flame along with the axis
of the pilot flame.
Chapter 2. MOUNTING