It is possible to set up or adjust the firing efficiency of a fossil-fuel heating appliance by sight or sound.

Name: It is possible to set up or adjust the firing efficiency of a fossil-fuel heating appliance by sight or sound.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The firing efficiency of a fossil-fuel heating appliance cannot be determined by sight or sound alone. It requires proper measurement and analysis, which should be done by a trained technician.

It Is Possible to Set Up or Adjust the Firing