Lesson 1
The Gas Boundary
See how a room-sealed boiler breathes through one pipe in the wall, why its case stays on, and what to do if you suspect carbon monoxide.
Predict
Ravi’s gas boiler hangs on his kitchen wall, against an outside wall, with one round pipe running from its top through the brick. A flame can’t burn without air.
Where does this flame get its air?
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Choose a prediction, then select Next to see the answer.