If you're firing a heating boiler in the summer or fall, there may be no load to match for an extended period. However, try to do a complete combustion analysis. If there is no load, and you have the capability to generate a false load, a combustion analysis can be performed at this time. But if no such provisions exist, a combustion analysis must be performed before the unit is put into operation for the heating season. Performing a combustion analysis is critical because your fuel cost often represents your greatest operating expense.
Some heating plants perform a monthly or quarterly combustion analysis.
They use these data to maximize fuel savings, and as a basis for comparison with future tests. Based on accurate measurements of these combustion byproducts, the burner can be adjusted to its optimum fuel efficiency. When the combustion analysis is completed, you should be given a copy of the report. A professional service technician should have the latest equipment to measure flue gas byproducts and components and make the necessary burner adjustments. When possible, disconnect the main power supply and lockout before cleaning, checking, and repairing your system.