Carbon Monoxide Detectors - NTI TRX II Series Installation Start-Up Maintenance

Part 3 - Prepare the Boiler for Installation
1. Direct Vent of Exhaust and Intake
If installing a direct vent option, combustion air must be drawn
from the outdoors directly into the boiler intake and exhaust must
terminate outdoors. There are three basic direct vent options detailed
in this manual: 1. Side Wall Venting, 2. Roof Venting, and 3. Unbalanced
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 7.
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 7.
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 7) 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 7.
16
2 /kW) of the total input of
2 ).
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.
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.
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.
420012001300 - Rev. 04 - 031524