| 5.3003.35a
Combustion air | Combustion supply/exhaust air opening will be in compliance with applicable
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
standards or local code | Exhaust combustion products to the outdoors Ensure work does not damage building Protect workers and occupants from injury |
| 5.3003.35b
Flue vent material | Flue vent material will be selected to prevent flue gas freezing and/or corrosion (using double wall, where necessary) Cost-effective materials will be used when appropriate and allowable | Ensure durability of flue vent system Ensure selected material is appropriate and cost-effective |
| 5.3003.35c
Installation | Venting systems will be installed considering proper material, pitch, common venting, chimney liner, clearance, total equivalent length, and termination in accordance with
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
54, 31, 211 Category I venting systems will be installed in accordance with
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
54/
ANSI
ANSI
American National Standards Institute, www.ansi.org
Z223.1 Category III and IV venting systems will be installed in accordance with the manufacturer specifications Terminations will be located away from windows, doors, and walkways Aesthetics and noise will be considered Venting will be routed in the shortest and most direct path possible Vent joints will be airtight and watertight | Exhaust combustion products to the outdoors Ensure work does not damage building Protect workers and occupants from injury |
| 5.3003.35d
Orphaned equipment
Orphaned equipment
Condition when one smaller combustion appliance exists after being commonly vented with a larger appliance. What remains is a larger exhaust flue or chimney than is necessary for the remaining smaller appliance
| Existing vent system or chimney will be resized or relined in accordance with the applicable
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
standard when one or more common vented appliances are removed | Exhaust combustion products to the outdoors Ensure work does not damage building Protect workers and occupants from injury |
