Gasfitter Red Seal Certification

Physical properties of natural gas and propane including specific gravity, heating values, odorants, flammability limits, and pressure characteristics.

Pipe types, sizing calculations, thread sealants, CSST bonding, unions, flex connectors, and sediment traps for gas distribution systems.

Gas pressure regulators, two-stage systems, manifold pressures, gas meters, shutoff valves, and excess flow protection.

Vent types, appliance categories, clearances, draft hoods, barometric dampers, vent terminals, and direct vent systems.

Rating plates, BTU sizing, clearances to combustibles, gas trains, manifolds, burner components, and piping schematics.

Complete vs incomplete combustion, flame characteristics, combustion air requirements, secondary air, and carbon monoxide hazards.

Thermocouples, thermopiles, flame rectification, hot surface igniters, intermittent pilot, direct spark ignition, gas valves, and flame sensor diagnostics.

Pressure testing, leak detection methods, line purging, combustion analysis, appliance commissioning, and flue gas measurement.

Condensing furnaces, heat exchangers, inducer motors, limit switches, pressure switches, rollout switches, spill switches, condensate management, and lockout diagnosis.