FULTON FHE-250 - Horizontal Exhaust Vent Termination

FHE-250 MANUAL 09 2014 ISSUE 2
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IMPORTANT NOTE: Wherever horizontal runs of exhaust vents are installed, a minimum slope of 1:50 must be
maintained, falling back toward the boiler(s).
Adhere to the following for installation:
1. Where the vent termination is joined to the vent pipe outside the wall. Use the same joining
procedures for vent pipe and ttings. The termination of the vent system must be at least
305 mm above the nished grade, or at least 305 mm above normal snow accumulation
level (for applicable geographical areas). The termination of the vent system should not be
located in trafc areas such as walkways, adjacent buildings, openable windows and building
openings unless the venting system is at least 21.3 m above nished grade. The vent
terminations must be at least 1.22 m horizontally from electric meters, gas meters,
regulators, and relief equipment.
2. When installing inlet and exhaust terminations on the same wall, the exhaust outlet must be
installed 0.914 m minimum above and downwind from air supply inlet to prevent exhaust
recirculation. Under certain wind conditions, some building materials may be affected by ue
products expelled in close proximity to unprotected surfaces. Sealing or shielding of the
exposed surfaces with a corrosion resistant material may be required to prevent staining or
deterioration.
3. The minimum vent height should extend to at least 0.914 m above the roof, or at least
0.609 m above the highest part of any structure within 3.04 m of the vent.
4. If the exhaust vent terminates within 3.04 m horizontally of the air inlet, the exhaust vent
must be at least 1.22 m above the inlet. Dimensions listed above and those illustrated are
minimum, and may or may not be sufcient for conditions at a specic job site.
5. To prevent the possible re-circulation of ue gases,the vent designer must take into
consideration factors such as prevailing winds, eddy zones, building congurations,
etc. Fulton cannot be responsible for the effects such adverse conditions may have on the
operation of the boilers. It is important to locate the exhaust duct in such a way that it does
not become blocked due to snow, ice, and other natural or man-made obstructions.
2.13.1
HORIZONTAL EXHAUST VENT TERMINATION