HVAC Excellence Master Combustion case studies
HVAC Excellence Master Combustion · Put your knowledge to work in context.
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. The HVAC Excellence Master Combustion case studies are 5 cases and about 3,975 words.
1455°F Stack on a New 80% Furnace: What the Numbers Do and Don't Prove
An 80% AFUE, single-stage induced-draft furnace rated 90,000 Btu/h is being commissioned in a new townhouse at sea level. The rating plate specifies 3.5 in.
781 words, about 4 min2Orphaned Water Heater in an Oversized Exterior Chimney
A 1990s two-story colonial had its 80% atmospheric furnace replaced with a 95% direct-vent unit. The original 40,000 Btu/h natural-draft water heater remains, connected by 5 ft of 4 in.
813 words, about 4 min3Tankless Heater: Undersized CSST and a Combustion-Air Assumption
A 199,000 Btu/h condensing tankless water heater replaces a 40-gallon tank in a 5 ft x 7 ft closet opening off a hallway. It is installed as a two-pipe, sealed-combustion appliance: 2 in.
811 words, about 4 min4Propane Conversion With a Regulator It Cannot Hold
A 120,000 Btu/h condensing furnace is field-converted from natural gas to propane. The kit's LP orifices were installed and the new label calls for 10.0 in.
816 words, about 4 min5CO in the Supply Air on an Overfired Furnace: Correct the Input First
An 18-year-old, 100,000 Btu/h, 80% upflow furnace is being checked on a seasonal tune-up. The rating plate lists 3.5 in.
754 words, about 4 min