72
• PURGE
- To free gas conduit of air or gas, or mixture of gas
and air.
• PURGE TIME
- Period of time intended to allow for
dissipation of any unburned gas or residual products of
combustion.
• QUALIFIED AGENCY
- Any individual, firm, corporation, or
company engaged in and responsible for:
• Installation, testing, or replacement of gas piping, or
connection, installation, testing, repair or servicing
of appliances and equipment.
• Experienced in such work.
• Familiar with all precautions required.
• Complies with all requirements of authority having
jurisdiction.
• SAFETY RELIEF VALVE
- Valve designed to relieve
pressure in hot water supply system when pressure exceeds
pressure capability of equipment.
• SAFETY SHUTOFF DEVICE
- Device that will shut off gas
supply to controlled burner in event source of ignition fails.
• SEDIMENT TRAP
- Gas piping arrangement designed to
collect any liquid or solid contaminant before reaching gas
valve.
• VENT
- Passageway used to convey flue gases from
appliance vent connector to outdoors.
• VENTING SYSTEM
- Continuous open passageway from
of appliance vent connector to outdoors for purpose of
removing flue or vent gases.
15 - GLOSSARY
PN 240011320 Rev. G 10/01/2021]