Table of Contents
Advertisement
3.16 - COMBUSTION AIR AND VENTILATION
OPENINGS
Provisions for combustion and ventiiation air must be made
in accordance with section 5.3, Air for Combustion and Venti-
lation, of the National Flue Gas Code, ANSI Z223.1/NFPA 54,
or Sections 7.2, 7.3 or 7.4 of CAN/CGA B149, installation
Codes, or appiicabie provisions of the local building codes.
CAUTION
BOILER DAMAGE AND OPERATIONAL
FAILURES
Due to insufficient or improper openings for com-
bustion air
and/or ventiiation of the boiler room.
Provisions for combustion air and ventiiation are
always re-
quired, regardiess whether the combustion air is
taken from
the outside (sealed combustion) or inside (room
air for com-
bustion).
Insufficient ventilation of the boiler room can lead
to high air
temperatures. This can result in boiler damage.
- Make sure that intake and exhaust openings
are sufficiently sized and no reduction or closu-
re of openings takes place.
- When the problem is not resolved, do not ope-
rate the boiler.
- Please note these restrictions and its dangers
to the operator of the boiler.
WARNING
BOILER DAMAGE !
Due to contaminated air.
- Boiler must be clear and free from combustible
materials, gasoline and other flammable vapors
and liquids, and corrosive liquids and vapors.
Never use chiorine and hydrocarbon containing
chemicals (such as spray chemicals, solution and
cleaning agents, paints, giues etc) in the vicinity
of the boiler.
- Do not store and use these chemicals in the
boiler room.
- Avoid excessive dust formation and buildup.
NOTICE
When one expects contaminated combustion air
(near swim-
ming pools, chemical cleaning operations and
hair salons),
sealed combustion operation is recommended.
DANGER
Fire danger due to flammable materials or liqui-
ds.
- Do not store flammable materials and liquids in
the immediate vicinity of the boiler.
Instructions for the installer
All Air from inside the Building (room air)
The closet shall be provided with two permanent openings
communicating directly with an additional room(s). The total
input of all gas utilization equipment installed in the combi-
ned space shall be considered in making this determination.
Each opening shall have a minimum free area of 1 square
inch per 1,000 Btu per hour of total input rating of all gas
utilization equipment in the confined space, but no less than
100 square inches. One opening shall commence within 12
inches (305 mm) of the top, and one opening shall commen-
ce within 12 inches (305 mm) of the bottom of the enclosure.
The minimum dimension of air openings shall be not less
than 4 inches (101 .6 mm).
25
Advertisement
Table of Contents
