HVAC Excellence Master Combustion study guide
HVAC Excellence Master Combustion · Work through your exam, one topic at a time.
HVAC Excellence is the credentialing and standards program operated by ESCO Group, based in Mt. Prospect, Illinois, and reachable toll free at (800) 726-9696. Its stated mission is to develop standards and resources that strengthen the quality of education, training, credentialing, and workforce development across the HVACR and building science industries. The program describes its certifications as portable and stackable, offered at progressive levels so that students, technicians, contractors, and instructors can pursue credentials at every stage of their careers. Topics on this exam: Combustion Analysis and Fuel Combustion Fundamentals, Combustion Appliance Venting and Draft, Gas Piping, Combustion Air, and Appliance Installation, Burner and Ignition System Setup and Troubleshooting, and Carbon Monoxide Safety, Diagnostics, and Efficiency Tuning. The HVAC Excellence Master Combustion study guide has 5 sections and about 1,629 words.
01Combustion Analysis and Fuel Combustion Fundamentals
Combustion analysis questions check whether you can read flue gas as chemistry in action: how much air the burner actually received (O2, excess air), how completely the fuel burned (CO, CO2), and what stack temperature says about loss up the flue. Methane burns as CH4 + 2O2 - CO2 + 2H2O.
368 words, about 2 min02Combustion Appliance Venting and Draft
Category I: negative pressure, non-condensing; B-vent or lined masonry. Category II: negative pressure, condensing.
304 words, about 2 min03Gas Piping, Combustion Air, and Appliance Installation
Size with the longest-length method using tables for 0.60 specific gravity and 0.5 in. pressure drop, and include every appliance on the line.
333 words, about 2 min04Burner and Ignition System Setup and Troubleshooting
Set manifold pressure with the burner firing and steady. Clock the meter: Btu/h = ft3 timed x 3,600 / seconds x heating value.
295 words, about 1 min05Carbon Monoxide Safety, Diagnostics, and Efficiency Tuning
CO is colorless, odorless, and binds hemoglobin far more readily than oxygen. It comes from incomplete combustion: rich mixture, flame impingement, blocked or undersized flue, backdrafting, overfiring, or a failed heat exchanger.
329 words, about 2 min