Bradford-White Corp BNTH, BNTV warranty Side Wall Combustion Air Terminal, Vertical Vent Terminal

Brute Elite Page 15

1.Figure 12 shows the requirements for mechanical vent terminal clearances for the U.S. and Canada.

2.Vent terminals for condensing appliances or appliances with condensing vents are not permitted to terminate above a public walkway, or over an area where condensate or vapor could create a nuisance or hazard.

3.Locate the vent terminal so that vent gases cannot be drawn into air conditioning system inlets.

4.Locate the vent terminal so that vent gases cannot enter the building through doors, windows, gravity inlets or other openings. Whenever possible, avoid locations under windows or near doors.

5.Locate the vent terminal so that it cannot be blocked by snow. The installer may determine that a vent terminal must be higher than the minimum shown in codes, depending upon local conditions.

6.Locate the terminal so the vent exhaust does not settle on building surfaces or other nearby objects. Vent products may damage surfaces or objects.

7.If the boiler or water heater uses ducted combustion air from an intake terminal located on the same wall, see Figures 12-14for proper spacing and orientation.

If the vent termination is located in an area exposed to high winds, an optional PVC tee (the same diameter as the vent pipe) may be used. The tee'd vent termination offers greater protection from wind related operating issues.

3.3.2Side Wall Combustion Air Terminal

The side wall combustion air terminal, or

concentric terminal (see Table 3), must be used when the heater takes air from a side wall. Contact Bradford White for AL29-4C termination fittings. Consider the following when installing the terminal (see Figures 12-

14):

1.Do not locate the air inlet terminal near a source of corrosive chemical fumes (e.g., cleaning fluid, chlorine compounds, etc.)

2.Locate the terminal so that it will not be subject to damage by accident or vandalism. It must be at least 7 feet (2.1m) above a public walkway.

3.Locate the combustion air terminal so that it cannot be blocked by snow. The National Fuel Gas Code requires that it be at least 12 inches (30cm) above grade, but the installer may determine it should be higher, depending upon local conditions.

4.If the Brute Elite is side-wall vented to the same wall, locate the vent terminal at least 1 foot (0.3m) above the combustion air terminal.

5.For concentric vent, follow instructions included with vent kit.

6.Multiple vent kits should be installed such that the horizontal distance between outlet group and inlet group is 36" (90cm) (see Figure 13).

7.Vent outlet for models 80-285 must be no lower than the center of the air inlet, and must be at least

12" (30cm) away from the air inlet. Vent outlets for models 399-850 must be at least 12" above the top of the air inlet, and must be at least 36" (90cm) horizontally from the air inlet (see Figure 14).

3.3.3 Vertical Vent Terminal

When the unit is vented through the roof, the vent must extend at least 3 feet (0.9m) above the point at which it penetrates the roof. It must extend at least 2 feet (0.6m) higher than any portion of a building within a horizontal distance of 10 feet (3.0m), and high enough above the roof line to prevent blockage from snow. The vent terminal included with the Brute Elite can be used in both vertical and horizontal applications. When the combustion air is taken from the roof, the combustion air must terminate at least 12" (30cm) below the vent terminal (see Figure 11).

3.3.4Vertical Combustion Air Terminal

When combustion air is taken from the roof, a

field-supplied rain cap or an elbow arrangement must be used to prevent entry of rain water (see Figure 11). The opening on the end of the terminal must be at least 12"

(30cm) above the point at which it penetrates the roof, and high enough above the roof line to prevent blockage from snow. When the vent terminates on the roof, the combustion air must terminate at least 12" (30cm) below the vent terminal.

3.3.5 Installations in the Commonwealth of Massachusetts

In Massachusetts the following items are required if the side-wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches. From Massachusetts Rules and regulations 248 CMR 5.08

1.Installation of Carbon Monoxide Detectors At the time of installation of the side wall vented gas fueled appliance, the installing plumber or gas- fitter shall observe that a hard-wired carbon monox- ide detector with an alarm battery back-up is instal- led on the floor level where the gas appliance is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard-wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side-wall hori- zontally vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for in- stallation of hard-wired carbon monoxide detectors.

a.In the event that the side-wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard-wired carbon monoxide with alarm and battery back-up may be installed on the next adjacent floor level.

b.In the event that the requirements of the subdivi- sion 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,