Option 2: Vertical Venting Positive Pressure, Category Iv Figure 5 Or Figure 6 (Vent Pipe Equivalent Length Up To100 Feet Maximum); Category Iv Figure 5 Or Figure 6 (Vent Pipe Equivalent Length Up To100 Feet Maximum) - RBI FUTERA XLF Series Installation And Operation Instructions Manual

OPTION 2: VERTICAL VENTING
POSITIVE PRESSURE, CATEGORY IV
FIGURE 5 OR FIGURE 6
(VENT PIPE EQUIVALENT LENGTH UP TO 100 FEET MAXIMUM)
Masonry chimneys, when used, must be lined with a
metal liner certifi ed for Category IV venting.
A thorough inspection of the masonry chimney must be
performed to ensure that the chimney is clean, properly constructed,
Figure 5 VENT OPTION 2: VERTICAL CHIMNEY VENTING
Vertical venting — with a metal chimney system
See Figure 4, page 7 for minimum pipe diameters.
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F F Finned copper tube gas boilers & water heaters – Boiler Manual F d b b l
lined and sized. Exterior masonry chimneys should not be used
unless properly lined to prevent condensation and draft problems.
Table 4 lists the equivalent breeching and fl ue sizes required for the
boiler/water heater.
Vent connections
Locate the boiler/water heater as close to the chimney as
possible. Use the shortest, straightest vent connector possible for
the installation. If horizontal runs exceed 5 ft , 1.5 m they must be
supported at 3 ft , 0.9 m intervals with overhead hangers.
Th e vent connector should be sloped up toward the chimney at a
minimum rate of ¼ in/ft , 21 mm/m. On masonry chimneys the
connector must terminate fl ush with the inside of the chimney fl ue,
Figure 8, page 13.
Always provide a minimum clearance of 6 inches, 152 mm between
single wall vent pipe and any combustible materials.
Figure 6
& h B l M
Failure to maintain minimum clearances between vent
connectors and any combustible material can result
in a fire causing extensive property damage, severe
personal injury or death!
VENT OPTION 2: VERTICAL CHIMNEY VENTING
Vertical venting — using a lined masonry chimney
See Figure 4, page 7 for minimum pipe diameters.
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