Bradford White EFR-1-60T1206SX User Manual

Page 22

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22

Figure 12a. Vent Terminal Clearances (Other than Direct Vent or “Power Vented” Installations)

Canadian

Installations

1

US

Installations

2

Canadian

Installations

1

US Installations

2

A= Clearance

above

grade, veranda, porch,
deck or balcony

12 inches
(30.5 cm)

12 inches
(30.5 cm)

H=

Clearance to each side
of center line extended
above meter/regulator
assembly

3 feet (.9 m) within a

height 15 feet (4.6 m)

above the

meter/regulator

assembly

*b

B=

Clearance to widow or
door that may be
opened

36 inches
(91.4 cm)

4 feet (1.2 m)

below or to the

side of opening;

12 inches

(30.5 cm)

above opening

I=

Clearance to service
regulator vent outlet or
oil tank vent

36 inches
(91.4 cm)

*b

C= Clearance

to

permanently closed
window

*b

*b

J=

Clearance to non-
mechanical air supply
inlet to building or the
combustion air inlet to
any other appliance

36 inches
(91.4 cm)

4 feet (1.2 m)

below or to side

of opening; 12

inches (30.5 cm)

above opening.

D= Vertical clearance to

ventilated soffit
located above the
terminal within a
horizontal distance of
2 feet (.61 m) from the
center line of the
terminal

*b

*b

K=

Clearance to a
mechanical air supply
inlet

6 feet

(1.8 m)

3 feet (.9 m)

above if within

10 feet (3 m)

horizontally

E= Clearance

to

unventilated soffit

*b

*b

L=

Clearance above paved
sidewalk or paved
driveway located on
public property

7 feet

(2.1 m)

7 feet

(2.1 m)

F=

Clearance to outside
corner

*b *b

M=

Clearance

under

a

veranda, porch, deck, or
balcony

12 inches (30.5 cm)‡ *b

G= Clearance to inside

corner

36 inches

(91.4 cm)*a

36 inches

(91.4 cm)*a

1

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

2

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

† A vent must 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”.

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