12
VENTING
Failure to follow all instructions can result in flue gas spillage and carbon monoxide
emissions, causing severe personal injury or death. All chimneys must meet the requirements of
NFPA 211 and NFPA 31
Direct Vent
The furnace can be direct vented when used in conjunction with the Boyertown Furnace Direct Vent Kit.
For complete direct vent application and installation instructions consult the Furnace Direct Vent Kit Z-
Flex DVO manual.
Chimney
OIL FIRED APPLIANCES SHALL BE CONNECTED TO FLUES HAVING SUFFICIENT DRAFT AT ALL
TIMES TO ENSURE SAFE AND PROPER OPERATION OF THE APPLIANCE
. An adequate chimney or
venting system is one that is sealed and lined with the capability of producing a -.04" W.C. flue draft
and having the capacity to handle the amount of flue gas that is introduced. A chimney with an
internal construction of corrosion resistant tile, stainless steel, or some other material that will
withstand flue gas temperatures up to 1000
0
F is required.
Masonry and metal chimneys shall be constructed in accordance with applicable building code
requirements. Masonry chimneys shall be lined with an approved clay tile liner or a listed chimney
lining system installed in accordance with manufacturers’ instructions and also meeting the
requirements of NFPA-211 Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning
Appliances. Metal chimneys also shall meet the requirements of NFPA-211. Factory built chimneys
shall be listed and shall be installed in accordance with their listing and NFPA-211.
Prior to installation of the furnace, the chimney or venting system shall be examined by the installer
and determined to be in good condition. All joints of the chimney must be tightly sealed. The inside of
the chimney should be free of all obstruction, such as loose brick, broken pieces of tile, or corroded
metal. If chimney flues are divided or there are multiple flues within one chimney, make sure there are
no openings in the partition separating the divided or individual flues. When a new appliance is
connected to an existing chimney, that chimney shall be brought up to current requirements.
Chimneys which are relined shall be done so with an approved liner that will resist corrosion,
softening, or cracking from the flue gasses.
All chimney clean-out doors and flue connections must fit tightly so they will seal to avoid air
leakage.
The inside area of the chimney liner
should equal, at a minimum, the area of the vent pipe exiting the
furnace. If more than one appliance is installed, the area of both appliances shall be used in
determining the required inside area of the chimney.
The flue gas exit of a chimney shall be at least 3 feet above the highest point where it passes through
the roof of a building and at least 2 feet higher than any portion of a building within 10 feet of such
chimney.
The chimney height will also be determined by the height of the surrounding trees, buildings and
terrain. When chimney downdraft conditions cause faulty operation that creates a hazard, corrective
steps must be taken.
When altering the surrounding obstructions is not possible, a chimney cap can be constructed on the
top of the chimney to avoid downdrafts. The chimney cap should be pyramid shaped on the top with a
perfectly flat surface immediately above the chimney outlet. The hood should be attached by four (4)
iron supports. The four iron supports should be equal in height to the width of the chimney opening.
WARNING
Содержание RSM 500
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