Assertion: boiler | /r/HasProperty | tuned
Facets:
Source sentences:
text: Almost all boilers are tuned to add excess air to ensure proper air-fuel mixing and complete combustion of the fuel.
text: Boilers must be tuned to achieve complete combustion.
text: When a boiler is tuned, the goal is to maximize combustion efficiency by providing just enough excess air to assure complete combustion but not too much to reduce efficiency.