HVAC Combustion Safety and Carbon Monoxide Test

Inspection template for documenting combustion safety testing of fuel-fired HVAC appliances, including draft, spillage, ambient carbon monoxide, CO in flue, and worst-case depressurization results.

Job Information and Appliance Identification

• Inspection location and date recorded
• Fuel-fired appliance identified by type, model, and serial number
• Vent system type identified
• Appliance category and input rating documented
• Inspection performed by qualified technician or competent person

Safety Preconditions and Test Setup

• Combustion analyzer and CO meter calibrated within manufacturer interval
• Test area free of obvious fuel leaks, soot accumulation, or blocked venting
• Appliance access panels removed and reinstalled as required for testing
• Combustion air openings and return air pathways identified
• All safety devices and controls restored to normal operating condition after setup

Ambient Conditions and Baseline Measurements

• Ambient carbon monoxide in test area
• Room temperature at time of test
• Outdoor temperature recorded
• Baseline draft reading before appliance firing
• Baseline flue CO reading before appliance firing

Operating Combustion Safety Tests

• Appliance starts and reaches stable operating condition
• Draft measured at flue outlet during steady-state operation
• Spillage observed at draft hood or flue opening during startup
• Spillage observed after warm-up period
• Carbon monoxide in flue during steady-state operation

Worst-Case Depressurization Test

• Worst-case depressurization setup completed
• Worst-case draft reading recorded
• Worst-case spillage observed
• Worst-case ambient CO remained within acceptable limit

Results, Deficiencies, and Sign-Off

• Overall test result
• Deficiencies, non-conformances, or corrective actions documented
• Inspector signature