NATE Gas Heating Service case studies
NATE Gas Heating Service · Put your knowledge to work in context.
The NATE Gas Heating (Service) credential is issued within the NATE certification program, which its operator describes as the nation's largest nonprofit certification organization for heating, ventilation, air conditioning and refrigeration technicians. The service profile is built for working technicians who diagnose, maintain, and repair residential and light commercial gas-fired heating equipment rather than for installers only or for sales staff. The NATE Gas Heating Service case studies are 5 cases and about 2,757 words.
1High-Altitude Conversion on a Natural Gas Furnace
A residential natural gas furnace rated 80,000 BTU/h input at sea level is installed at 5,200 ft elevation. The installer reused the sea-level orifice and left manifold pressure at 3.5 in.
560 words, about 3 min2Common-Vent Spillage in a Tight Basement
A 1,250 ft² basement with an 8 ft ceiling contains an 80% AFUE, 100,000 BTU/h natural-draft furnace and a 40,000 BTU/h natural-draft water heater. Both appliances connect to a common 6 in.
564 words, about 3 min3Adding a Garage Heater to an Existing 1/2-Inch Gas Line
Schedule 40 black iron gas line supplies a 100,000 BTU/h furnace and a 40,000 BTU/h water heater. The developed length from the meter to the farthest appliance is 45 ft with four elbows and one tee.
571 words, about 3 min4Pressure Switch Proving Failure on a Condensing Furnace
A 90% AFUE, two-stage, 60,000 BTU/h condensing furnace locks out with a three-flash code that the label defines as 'pressure switch stuck open.' The inducer starts and draws 0.9 A against a 1.1 A nameplate FLA. A manometer teed at the pressure switch reads -0.62 in.
520 words, about 3 min5High Temperature Rise After a Blower Replacement
A 100,000 BTU/h, 80% AFUE upflow furnace has a rated temperature rise of 35-65°F and a rated external static pressure of 0.50 in. A replacement 1/2 hp four-speed blower is set on medium-low.
542 words, about 3 min