Check Burner

      The burner combustion efficiency should be checked regularly by measuring the combustion products’ CO₂ content. Too little combustion air (producing high CO) can overheat the burner, produce soot and cause damage. Too much combustion air reduces the system efficiency by increasing fuel consumption. Simply monitoring the heater flue gas temperature can quickly indicate a problem. The lower the temperature the higher the heater efficiency. Increased flue gas temperature could indicate the burner is out of adjustment or soot build-up in the heater.