Bradford-White Corp BRUTE DELUXE BMT2V Manual De Usuario

Page 8

For indoor installations, as an additional measure 

of safety, Bradford White strongly recommends 

installation of suitable Carbon Monoxide detectors 

in the vicinity of this appliance and in any adjacent 

occupied spaces. 

Pour des installations intérieures, Bradford White 

recommande fortement, comme mesure de sécurité 

supplémentaire, l’installation de détecteurs de 

monoxyde de carbone adaptés dans le voisinage 

de l’appareil et dans chacune des pièces habitées 

adjacentes.

Brute Deluxe boilers and water heaters must 

have provisions for combustion and ventilation air in 

accordance with the applicable sections addressing 

requirements for air for combustion and ventilation of 

the National Fuel Gas Code, ANSI Z223.1. In Canada, 

the applicable sections of the Natural Gas and Propane 

Installation Code (CSA B149.1) must be followed. In 

all cases any and all applicable local installation codes 

must also be followed.

A Brute Deluxe appliance may receive 

combustion air from the space in which it is installed, 

or it can be ducted directly to the unit from the outside. 

Proper ventilation air must be provided in either case.

In the United States, the most common 

requirements specify that the space shall communicate 

with the outdoors in accordance with method 1 or 2, 

which follow. Where ducts are used, they shall be of 

the same cross-sectional area as the free area of the 

openings to which they connect.

Method 1: Two permanent openings, one 

commencing within 12 inches (30 cm) of the top 

and one commencing within 12 inches (30 cm) of 

the bottom, of the enclosure shall be provided. The 

openings shall communicate directly, or by ducts, 

with the outdoors or spaces that freely communicate 

with the outdoors. When directly communicating 

with the outdoors, or when communicating to the 

outdoors through vertical ducts, each opening shall 

have a minimum free area of 1 square inch per 4000 

Btu/hr (5.5 square cm/kW) of total input rating of all 

equipment in the enclosure. When communicating to 

the outdoors through horizontal ducts, each opening 

shall have a minimum free area of not less than 

1 square inch per 2000 Btu/hr (11 square cm/kW) of 

total input rating of all equipment in the enclosure. 

Table 3

 shows data for this sizing method.

Method 2: One permanent opening, commencing 

within 12 inches (30 cm) of the top of the enclosure, 

shall be permitted. The opening shall directly 

communicate with the outdoors or shall communicate 

through a vertical or horizontal duct to the outdoors 

or spaces that directly communicate with the outdoors 

and shall have a minimum free area of 1 square inch 

per 3000 Btu/hr (7 square cm/kW) of the total input 

rating of all equipment located in the enclosure. This 

opening must not be less than the sum of the areas of 

all vent connectors in the confined space.

Other methods of introducing combustion and 

ventilation air are acceptable, providing they conform 

to the requirements in the applicable codes listed 

above.

In Canada, consult local building and safety 

codes or, in absence of such requirements, follow 

CSA B149.1, the Natural Gas and Propane Installation 

Code.

Boiler 

Size

Each Opening*

Square cm

200

323

300

484

400

645

*Net Free Area in Square Inches / Square cm

Area indicated is for one of two openings; one at floor level 

and one at the ceiling, so the total net free area could be 

double the figures indicated.
This chart is for use when communicating directly with the 

outdoors. For special conditions and alternate methods, refer 

to the latest edition of ANSI Z223.1.
Note:  Check with louver manufacturers for net free area of 

louvers. Correct for screen resistance to the net free area 

if a screen is installed. Check all local codes applicable to 

combustion air.