Bradford-white DS1-50S6FSX User Manual download pdf (Page 12)

Venting continued-

Canadian

Installations

US Installations

I= Clearance to service regulator vent

outlet or oil tank vent

36 inches

(91 cm)

J= Clearance to non-mechanical air

supply inlet to building or the

combustion air inlet to any other

appliance

12 inches

(30 cm)

9 inches

(23 cm)

K= Clearance to a mechanical air supply

inlet

6 feet

(1.83 m)

3 feet (91 cm) above if

within 10 feet

horizontally

L= Clearance above paved sidewalk or

paved driveway located on public

property

7 feet

(2.13 m)†

M= Clearance under a veranda, porch,

deck, or balcony

12 inches (30

cm) ‡

In accordance with the current CAN/CGA-B149 Installation Codes.

In accordance with the current ANSI Z223.1-(Latest edition)/NFPA 54 National Fuel Gas Code.

† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two

single-family dwellings and serves both dwellings.

‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath

the floor.

*a) A minimum clearance value determined by testing in accordance with section 2.20.

*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.

The vent system must terminate so that proper clearances are maintained as

cited in local codes or the latest edition of the National Fuel Gas Code, ANSI

Z223.1.73.4e and 7.8a, b as follows:

1. Do not terminate near soffit vents or crawl space or other area

where condensate or vapor could create a nuisance or hazard or

cause property damage.

2. Do not terminate the exhaust vent terminal where condensate or

vapor could cause damage or could be detrimental to the operation

of regulators, relief valves, or other equipment.

3. Do not terminate the exhaust vent terminal over public area or

walkways where condensate or vapor can cause nuisance or

hazard.

4. The vent shall terminate a minimum of 12 inches above expected

snowfall level to prevent blockage of vent termination.

Vent pipes serving power vented appliances are classified by building codes

as “vent connectors”. Required clearances from combustible materials must

be provided in accordance with information in this manual under LOCATION

OF WATER HEATER and CLEARANCES, and with National Fuel Gas Code

and local code

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Bradford-white DS1-50S6FSX User Manual Page 12

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