Crown Boiler FSZ080, Installation Instructions Manual

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13
VII Venting
The vent installation must be in accordance with local building codes, or the local authority having jurisdiction. Contact your
local fire and building officials on specific requirements for restrictions and the installation of fuel oil burning equipment. In
the absence of other applicable codes, the vent system installation must meet the requirements of NFPA 31 –
Standard for the
Installation of Oil-Burning Equipment
and NFPA 211 -
Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning
Appliances
. Vent systems in Canada must comply with CSA B139-04 –
Installation Code for Oil-burning Equipment
.
A typical vent system is illustrated in Figure 7.0. The components of the vent installation are the vent connector (breeching),
barometric draft regulator, and chimney.
1) Acceptable Chimneys - The following chimneys may be used to vent a FSZ series boiler:
• Listed Type L 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 the latest edition of Standard for
Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances (NFPA 211) and lined with a clay liner or other listed
lining system. Do not vent a FSZ series boiler into an unlined chimney .
2) Acceptable Vent Connectors - The following may be used for vent connectors:
• Listed Type L vent.
• Single Wall Galvanized Pipe - Use 0.018” (26 gauge) or heavier.
3) Chimney and Vent Connector Sizing - See Table 7.1 for minimum vent connector and chimney sizing. The vent connector
size must not be smaller than boiler flue collar diameter .
4) Do not vent this appliance into any portion of a mechanical vent system operating under positive pressure.
5) Do not connect the boiler into a chimney flue serving an open fireplace or other solid fuel appliance.
6) Prior to boiler installation, an existing chimney must be inspected by a qualified person in accordance with the requirements
of Chapter 11 of NFPA 211, Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances . This inspection is
intended to identify safety problems with the chimney such as obstructions, a missing or damaged liner, or leak points. Clean
chimney as necessary and correct any other chimney defects before installing the boiler.
7) Vent connector must slope upward from boiler not less than one inch in four feet. No portion of vent pipe should run
downward or have sags. Vent connector must be securely supported.
8) The vertical section of vent connector coming off the boiler should be as tall as possible, while still maintaining the proper
clearance from the horizontal vent connector to combustibles and the proper pitch called for in (7) above.
9) Vent connector must be installed above the bottom of the chimney to minimize risk of blockage.
WARNING
• 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.
• Inspect existing chimney before installing boiler. Failure to clean or replace damaged pipe
or tile lining will cause property damage, severe personal injury or death.
• Do not de-rate the appliance. Failure to fire the unit at it’s designed input may cause
excessive condensation upon the interior walls of the chimney. In addition, the lower input
may not create enough draft to adequately evacuate the products of combustion.