HVAC Excellence Oil Heat Certification Exam case studies
HVAC Excellence Oil Heat · Put your knowledge to work in context.
HVAC Excellence is a program of ESCO Group, based in Mt. Prospect, Illinois, that develops standards and resources for education, training, credentialing, and workforce development across the HVACR and building science industries. Its certifications are described as portable and stackable, meaning a candidate can pursue progressive levels of certification at different career stages, and the organization offers exams at each of those levels. The credential is aimed at students in HVACR training programs, working technicians, contractors, and instructors; separate educator credentialing exams exist for those who teach. The HVAC Excellence Oil Heat case studies are 5 cases and about 3,294 words.
1Overfired Boiler After Nozzle Replacement
A technician responds to a 1990s cast-iron boiler rated 175,000 Btu/hr input. The homeowner reports that the boiler was serviced last week by another company and now the basement smells oily and the boiler rumbles on startup.
691 words, about 3 min2Intermittent Lockout on a High-Lift Suction Line
A technician is called to a ranch house whose oil burner locks out two or three times a week, usually after the system has been off for several hours. The outdoor aboveground tank has a top outlet and a dip tube.
682 words, about 3 min3Puffback After Electrode Adjustment
A technician tunes a 1.0 GPH retention-head oil burner on a steel boiler. Before the tune-up, the burner had been running with a 3/16-inch electrode gap, and both electrode tips were set about 1/8 inch behind the nozzle face.
657 words, about 3 min4Lukewarm Domestic Water From a Tankless Coil
A family complains that the shower starts hot and turns lukewarm after about five minutes in winter. The boiler is an oil-fired unit with a tankless domestic hot water coil rated 3 gpm at a 100°F temperature rise.
661 words, about 3 min5CO Alarm and Chimney Spillage on a Natural-Draft Boiler
A technician arrives at a 1920s house with a natural-draft oil boiler vented into an unlined masonry chimney. The basement CO detector has alarmed twice in the past week, usually when the clothes dryer and bathroom exhaust fan run.
603 words, about 3 min