INTRODUCTION
MEASURE PRESSURES An indispensable tool for trouble-shooting or servicing combustion equipment is a pressure measurement device: Pressure gauges, water manometers, or digital manometers are extremely valuable. After initial adjustment of the combustion system, the various pressures should be recorded. In the future, problems may be more easily solved by referring to those pressures and comparing them with the pressures at the time of the problem. See inside back cover. Using pressure measurement and the appropriate manufacturers' bulletins, you will be able to determine the burner firing rate, accuracy of the air/fuel ratio regulator, performance of the combustion air blower, pressure drops in existing piping, existence of blockages in the piping and their location, and utility supply pressures. Measurement of pressures for a combustion system should be performed under flow conditions. As an example, a partially open valve may allow full proper pressures under low flow conditions but excessive drop-off in pressure after burner is turned on. GOOD LUCK We trust that this booklet will make you more expert in industrial burner control systems.
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