FULTON Vantage VTG Series Installation And Operation Manual page 35

SECTION 2
VTG-IOM-2016-1214
acceptable pressures. The equivalent length method is not an approved
engineering method for determining acceptability of a vent system due to
varying burner modulation rates, ambient air temperatures, and flue gas
temperatures, among other factors. Combustion air intake piping (if used)
must be accounted for in an analysis of the venting system.
5. If the maximum positive pressure is exceeded, the boiler may have to be
de-rated or require the installation of draft accessories such as a properly
selected exhaust assist fan to prevent operational issues from occurring. If
the maximum negative pressure is exceeded due to excessive natural draft
(stack effect), the exhaust system may require the use of draft accessories
such as a fixed-position balancing baffle or modulating overdraft damper.
Draft accessories must be appropriate for Category II/IV installations
and are not included with the boiler. Consult your venting supplier for
recommendations.
6. Adhere to local and jurisdictional codes and regulations, which may differ
from recommendations and diagrams contained in this manual.
7. Do not terminate the venting in an enclosed area. Care must be taken
when selecting the orientation of the terminations. The combustion
air intake termination must be located as to not be subjected to the
exhaust of other mechanical equipment such as other fuel fired heating
equipment, loading docks, generators, and air handling systems.
8. Site specific conditions not addressed in this manual may require
additional precautions or design considerations. Consult your local Fulton
Representative and venting supplier for recommendations.
NOTEE: Consult your venting pipe supplier for assistance with sizing of vent
–
materials and other potentially required accessories.
9. Do not use boot tees or bullhead tees.
10. Barometric dampers are physically open to the mechanical space. When
used in a condensing boiler application with negative pressure exhaust
vent, the design must prevent flue gas condensate from draining down
the outside of the stack or dripping into the space. Barometric dampers
must never be used in a positive pressure exhaust or direct vent sealed
combustion application.
11. The air intake system must be designed to prevent any moisture from
draining to the boiler.
12. The layout of the piping used for air intake and exhaust must be done
in a way that facilitates smooth travel and natural flow. A pressure drop
calculation isn't enough information to make sure a draft system will
perform adequately. Good practice must be used by the designer and
installer. Some recommendations:
ƒ Avoid sharp turns, boot tees, bullhead tees, back-to-back 90 degree
elbows, short radius elbows especially right at the connections to
the boilers.
Questions? Please Contact Your Local Manufacturer's Representative
INSTALLATION
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct, and strict
adherence to applicable jurisdictional/
professional codes and regulations.
Never install a barometric damper on flue
systems designed with positive pressure.
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