NTI INSTALLATION MANUALS

Part 5 - Venting

D. Exhaust Vent and Intake Pipe Location

INSIDE CORNER

DETAIL

G

E

A

H

E

B

B

C

D

FIXED

E

E

OPERABLE

CLOSED

FIXED

CLOSED

E

I

E

OPERABLE

F

K

E

B

M

B

E

E

I

I

E

J

A

K

I

L

B

LP-179-CC

03/28/17

Intake Pipe Terminal

I

Exhaust Vent Terminal

Area Where Intake Terminal Is Not Permitted

E

Figure 21 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada

DESCRIPTION

US

CANADA

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

1 foot (30 cm)

Direct Vent

1 foot

Clearance to window or door that may be opened

3 feet (91 cm)

B

4 ft below or to side of opening; 1 ft above opening

Power Vent

Clearance to permanently closed window

*

C

D Vertical clearance to ventilated so t located above the terminal within a hori zontal distance 2 feet (61 cm) from the center line of the terminal

*

Clearance to unventilated so t

*

E

Clearance to outside corner

*

F

Clearance to inside corner

*

G

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

*

Above a regulator within 3 feet (91 cm) horizontally of the vertical center line of the regulator vent outlet to a maximum vertical distance of 15 ft (4.5 m)

Clearance to service regulator vent outlet

*

I

Direct Vent

1 foot

J Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance

3 feet (91 cm)

4 ft below or to side of opening; 1 ft above opening 3 feet above if within 10 feet horizontally

Power Vent

Clearance to mechanical air supply inlet

6 feet (1.83 m)

K

Direct Vent

*

L Clearance above paved sidewalk or paved driveway located on public property

7 feet (2.13 m)

Power Vent

7 feet (2.13 m)

Clearance under veranda, porch deck, or balcony

*

1 foot (30 cm)

M

Table 13 - Vent Termination Clearances - *NOTE: For clearances not specified in ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada, please use clearances in accordance with local installation codes and the requirements of the gas supplier.

WARNING

WARNING

For each Áoor containing bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedrooms, as well as in the room that houses the heater. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to comply with these requirements could result in product damage, severe personal injury, or death.

The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as well as scheduling routing maintenance. Failure to keep the vent piping terminations clear and properly maintain the heater could result in property damage, severe personal injury, or death.

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