Venting - Crown Boiler AWR Series Installation Instructions Manual

• Improper venting may result in property damage and/or the release of flue gases, which contain deadly
Carbon Monoxide (CO), into the home, which can cause severe personal injury or death.
• Do not use plastic venting materials (such as CPVC, PVC and RADEL) to vent this boiler.
• Inspect existing chimney before installing boiler. Failure to clean or replace damaged pipe or tile lining will
cause severe injury or death.
The vent system installation must be in accordance with local codes, or in the absence of such codes, the National Fuel Gas
Code (NFPA 54/ANSI Z223.1). In Canada, refer to the Natural Gas and Propane Installation Code (CAN/CSA 149.1).
A typical vent installation is illustrated by Figure 6.1. The components of vent installation are boiler draft diverter, vent
damper, vent connector and chimney. This boiler is equipped with a draft hood which is built into the boiler; do not attempt to
install an external draft hood.
1) Acceptable Chimneys - The following chimneys may be used to vent this boiler:
•
Listed Type B or L gas vent - Install in accordance with the manufacturer's instructions, the terms of its listing, and
applicable codes.
•
Masonry Chimney - The masonry chimney must be constructed in accordance with local codes, or in the absence of
any, the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances (NFPA 211). The chimney
must be lined with a clay liner or other listed lining system. Do not vent this boiler into an unlined chimney.
2) Acceptable Vent Connectors - The following may be used for vent connectors:
•
Listed type B or L Gas Vent
•
Single Wall Galvanized Pipe - Use 0.018" (26 gauge or heavier). The size and location of the chimney may not
permit the use of a single wall connector in some cases. (see the National Fuel Gas Code). Do not use single wall
pipe for vent connectors in attics.
•
Other Vent Connectors Permitted by the National Fuel Gas Code.
3) Chimney and Vent Connector Sizing - Size the chimney and vent connector in accordance with the National Fuel Gas
Code.
FIGURE 6.1: TYPICAL VENT SYSTEM INSTALLATION AND COMPONENTS
VI Venting
!
WARNING
14