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INSTALLATION
!
WARNING
Fulton accepts no liability for installation
of any venting, including the selection of
venting materials. Maximum allowable
flue gas operating temperatures may
vary by manufacturer. Consult the
venting supplier for maximum allowable
temperatures.
2-26
Venting Terminations
Adhere to National Fuel Gas Code (ANSI Z223.1) and the following for installation:
1. Do not terminate the venting in an enclosed area. Care must be taken
when selecting the type and orientation of the terminations.
2. All vent pipes and fittings must be installed with appropriate air space
clearances to combustibles. These air space clearances apply to indoor or
outdoor vents—whether they are open, enclosed, horizontal or vertical or
pass through floors, walls, roofs, or framed spaces. The air space clearances
should be observed to joists, studs, sub floors, plywood, drywall or plaster
enclosures, insulating sheathing, rafters, roofing, and any other material
classed as combustible.
3. To prevent the possible re-circulation of flue gases, the vent designer
must take into consideration such things as prevailing winds, eddy zones,
building configurations, etc. Adverse conditions effect operation reliability
and durability of the boiler(s).
4. The required minimum air space clearances also apply to electrical wires
and any kind of building insulation.
5. Listed termination parts must be used.
6. Select the air intake point of penetration where a minimum of 1/4" per foot
(1 mm per 48 mm) upward pitch can be maintained.
7. It is recommended to install a mesh bird screen, with minimum 1/2" by 1/2"
openings, at the combustion air intake termination. Climates subject to
extreme cold may require alternate configurations to provide an increased
surface area, such a cylindrical basket screens. Consult your venting
supplier for recommendations.
8. It is important to locate the exhaust termination in such a way that it does
not become blocked due to snow, ice, and other natural or man-made
obstructions. If terminating into a prevailing wind, direct upward. Avoid
areas (example: courtyards) where swirling high winds may be present.
ƒ Wall Thimble Installation
Adhere to the following for installation (see Figure 13):
1. Insert the thimble through the wall from the outside.
2. Secure the outside flange to the wall with nails or screws, and seal with
adhesive material.
3. Install the inside flange to the inside wall, secure with nails or screws, and
seal with adhesive material.
4. Pass the vent pipe through the thimble from the outside and join to the
rest of the vent system. Seal the pipe to the thimble flange with adhesive
material.
SECTION 2
EXE-IOM-230112
© Fulton Group N.A., Inc. 2023
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