Flue Terminal Clearances (ANS Z21.10.3 • CSA 4.3)

INSIDE

CORNER DETAIL

D

E

B

L

G

H

A

 

 

 

 

 

B

I

M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

FIXED

 

K

 

 

 

 

CLOSED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERABLE

 

 

 

C

 

B

 

J

 

 

 

FIXED

 

B

 

X AIR SUPPLY INLET

 

 

 

 

 

CLOSED

 

A

 

 

 

 

 

 

 

 

 

 

 

OPERABLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V VENT TERMINAL

F

AREA WHERE

BTERMINAL IS NOT PERMITTTED

Ref

Description

Canadian Installations

US Installations

 

 

 

 

A

Clearance above grade, veranda, porch, deck, or balcony

12 inches (30 cm)

12 inches (30 cm)

 

 

 

 

B

Clearance to window or door that may be opened

36 inches (91 cm)

12 inches (30 cm)

 

 

 

 

C

Clearance to permanently closed window

*

*

 

 

 

 

 

Vertical clearance to ventilated soffit, located above the terminal

 

*

D

within a horizontal distance of 2 feet (61 cm) from the center line

*

 

of the terminal

 

 

 

 

 

 

E

Clearance to unventilated soffit

*

*

 

 

 

 

F

Clearance to outside corner

*

*

 

 

 

 

G

Clearance to inside corner

*

*

 

 

 

 

H

Clearance to each side of center line extended above meter/

3 feet (91 cm) within a height

 

15 feet (4.5 m) above the

*

regulator assembly

 

meter/regulator assembly

 

 

 

 

 

 

 

 

I

Clearance to service regulator vent outlet

36 inches (91 cm)

*

 

 

 

 

J

Clearance to nonmechanical air supply inlet to building or the

36 inches (91 cm)

12 inches (30 cm)

combustion air inlet to any other appliance

 

 

 

 

 

 

 

K

Clearance to a mechanical air supply inlet

6 feet (1.83 m)

3 feet (91 cm) above if within

10 feet (3 m) horizontally

 

 

 

 

 

 

 

L

Clearance above paved sidewalk or paved driveway located on

7 feet (2.13 m) 1

*

public property

 

 

 

 

 

 

 

M

Clearance under veranda, porch, deck, or balcony

12 inches (30 cm) 2

*

 

 

 

 

1A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

2Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

*For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.

Clearance to opposite wall is 24 inches (60 cm) for Canada and US.

VA Series Indoor LS Manual

29

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Image 29
Rinnai REU-VA3237FFU installation manual Flue Terminal Clearances ANS Z21.10.3 CSA, Area Where Bterminal is not Permittted
Page 28 Page 30

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