Power Venting, Indoor Combustion Air In Confined Or Unconfined; Space; Carbon Monoxide Detectors; Prevent Combustion Air Contamination - NTI TRX Series Installation, Start-Up, Maintenance, Parts, Warranty

Venting.
Be sure to locate the boiler such that the exhaust vent and intake
piping can be routed through the building and properly terminated.
Different vent terminals can be used to simplify and eliminate multiple
penetrations in the building structure (see Optional Equipment in
Venting Section). The exhaust vent and intake piping lengths, routing,
and termination methods must all comply with the methods and limits
given in the Venting Section, this manual.
When installing a combustion air intake from outdoors, care must
be taken to utilize uncontaminated combustion air. To prevent
combustion air contamination, see Table 6.
2. Power Venting, Indoor Combustion Air in Confined or
Unconfined Space
This boiler requires fresh, uncontaminated air for safe operation and must
be installed in a mechanical room where there is adequate combustion
and ventilating air. NOTE: To prevent combustion air contamination,
see Table 6.
Combustion air from the indoor space can be used if the space has
adequate area or when air is provided through a duct or louver to supply
sufficient combustion air based on the boiler input. Never obstruct the
supply of combustion air to the boiler. If the boiler is installed in areas
where indoor air is contaminated (see Table 6) it is imperative that the
boiler be installed as direct vent so that all combustion air is taken directly
from the outdoors into the boiler intake connection.
Unconfined space is space with volume greater than 50 cubic feet per
1,000 BTU/hr (4.8 cubic meters per kW) of the total input rating of all fuel-
burning appliances installed in that space. Rooms connected directly to
this space through openings not furnished with doors are considered part
of the space. See Venting Section for details.
Confined space is space with volume less than 50 cubic feet per 1,000
BTU/hr (4.8 cubic meters per kW) of the total input rating of all fuel-
burning appliances installed in that space. Rooms connected directly to
this space through openings not furnished with doors are considered part
of the space.
When drawing combustion air from inside a conventionally constructed
building to a confined space, such space should be provided with two
permanent openings: one located 6" (15 cm) below the space ceiling, the
other 6" (15cm) above the space floor. Each opening should have a free
area of one square inch per 1,000 BTU/hr (22cm
all appliances in the space, but not less than 100 square inches (645cm
If the confined space is within a building of tight construction, air for
combustion must be obtained from the outdoors as outlined in the
Venting section of this manual.
CAUTION
When drawing combustion air from the outside into the mechanical
room, care must be taken to provide adequate freeze protection.
WARNING
Failure to provide an adequate supply of fresh combustion air can
cause poisonous flue gases to enter the living space, resulting
in severe personal injury or death. To prevent combustion air
contamination, see Table 6.
H. Carbon Monoxide Detectors
In the Commonwealth of Massachusetts and As Required by State
and Local Codes:
Installation of Carbon Monoxide Detectors: At the time of installation
or replacement of the vented gas fueled appliance, the installing
plumber or gas fitter shall observe that a hard wired carbon monoxide
detector with an alarm and battery back-up is installed on the floor
level where the gas appliance is installed, unless the appliance is
located in a detached, uninhabitable structure separate from the
dwelling, building, or structure used in whole or in part for residential
purposes.
In addition, the installing plumber or gas fitter shall observe that a hard
wired carbon monoxide detector with an alarm and battery back-up is
installed on each additional level of the dwelling, building, or structure
served by the vented gas appliance. It shall be the responsibility of the
property owner to secure the service of qualified licensed professionals
for the installation of hard wired carbon monoxide detectors.
Approved Carbon Monoxide Detectors: Each carbon monoxide
detector as required in accordance with the above provisions shall
comply with NFPA 70 and be ANSI/UL 2034 listed and IAS certified.
Install intake air piping for the boiler as described in the Venting
Section, this manual. Do not terminate exhaust in locations that can
allow contamination of intake air.
2 /kW) of the total input of
2 ).
Table 6 - Products and Areas Likely to Have Contaminants
Part 3 - Prepare the Boiler for Installation
a. In the event that the vented gas fueled appliance is installed in a
crawl space or attic, the hard wired carbon monoxide detector with
alarm and battery back-up shall be installed on the next adjacent
floor level.
b. In the event that these requirements cannot be met at the time
of completion of installation, the owner shall have a period of thirty
(30) days to comply with the above requirements; provided, however,
that during said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
WARNING
Do not attempt to vent this appliance by any means other than those
described in this manual. Doing so will void the warranty and may
result in severe personal injury or death.
I. Prevent Combustion Air Contamination
WARNING
Ensure that the intake air will not contain any of the contaminants
in Table 6. Contaminated air will damage the boiler, resulting in
possible substantial property damage, severe personal injury, or
death. For example, do not pipe intake air near a swimming pool or
laundry facilities. These areas always contain contaminants.
Products to Avoid
Spray cans containing fluorocarbons
Permanent wave solutions
Chlorinated waxes / cleaners
Chlorine-based swimming
chemicals
Calcium chloride used for
thawing
Sodium chloride used for water sof-
tening
Refrigerant leaks
Paint or varnish removers
Hydrochloric or Muriatic acid
Cements and glues
Antistatic fabric softeners used in
clothes dryers
Chlorine-type bleaches,
detergents, and cleaning solvents
Adhesives used to fasten building
products
NOTE: DAMAGE TO THE BOILER CAUSED BY EXPOSURE TO
CORROSIVE VAPORS IS NOT COVERED BY WARRANTY. (Refer to
the limited warranty for complete terms and conditions.)
Areas Likely to H ave
Contaminants
Dry cleaning / laundry areas
and establishments
Swimming pools
Metal fabrication plants
pool
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas
and establishments
New building construction
Remodeling areas
laundry
Garages and workshops
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