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

INSIDE

CORNER DETAIL

G

H

D

E

B

L

A

C

FIXED

CLOSED

OPERABLE

 

B

B

FIXED

CLOSED

 

OPERABLE

B

J

 

 

B

 

A

I M

K

X AIR SUPPLY INLET

V

F

B

VENT TERMINAL

AREA WHERE TERMINAL 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.

Manual - Rinnai Condensing Water Heaters

27

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Rinnai RC80E, RC98I, RC98E Flue Terminal Clearances ANS Z21.10.3, CSA, Description Canadian Installations US Installations

RC80E, RC80I, RC98E, RC98I specifications

The Rinnai RC80E, RC98I, RC98E, and RC80I are high-efficiency tankless water heaters that exemplify leading-edge technology and engineering. Designed to meet the demands of modern households, these units provide continuous hot water while offering energy savings and compact sizes.

Starting with the RC80E, this model features a maximum flow rate of 8 gallons per minute, making it suitable for smaller homes or multi-family settings. It incorporates Rinnai's Circ-Logic technology, allowing homeowners to customize their hot water recirculation. This means users can schedule hot water availability, ensuring comfort while minimizing water waste.

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