HELIX VX-399 Installation, Operation & Maintanance Manual page 65

• 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
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