Venting Terminations - FULTON VSRT Series Installation And Operation Manual

2 - INSTALLATION
5. The run in the total distance of stack ducting,
as measured in a straight line from the outlet of
the boiler to the outlet of the stack, should not
exceed 25% of the rise. With the exception of the
duct run previously described, horizontal sections
of ducting must be avoided and should not
exceed four feet total. See Figure 15.
6. The stack and chimney material shall comply with
all applicable codes.
7. Adequate provision must be made for the
support of the weight of the chimney and stack
to avoid having a load imparted to the outlet
connection of the equipment.
8. The installation of a draft regulator by the client/
contractor is recommended at all installations.
This will help to maintain the required draft. The
placement of the draft regulator should be as
shown in Figure 15.
! WARNING
To maintain a reasonable temperature in the
equipment area and ensure safety to personnel, the
section of the chimney duct within the building should
be insulated.
! CAUTION
Concentration levels of only a few ppm of chlorine
containing compounds in combustion air can produce
serious corrosion of the flue over long periods of time.
High chlorine containing compounds such as carbon
tetrachloride or perchloroethylene would be prime
suspects.
2-30
VSRT_IOM_2018-1213

Venting Terminations

Adhere to the following for installation:
1. 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.
2. 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. Fulton
cannot be held responsible for the effects such
adverse conditions may have on the operation of
the boilers.
3. The required minimum air space clearances also
apply to electrical wires and any kind of building
insulation.
4. Listed termination parts must be used.
5. Select the air intake point of penetration where
a minimum of 1/4" per foot (6.35 mm per .3 m)
upward pitch can be maintained.
6. 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 screens. Consult your
venting supplier for recommendations.
7. 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 elbow upward. Avoid areas (example:
courtyards) where swirling high winds may be
present.
© Fulton 2018