Horizontal Vent Termination

 

 

 

 

Terminate at least 300mm (12") above

 

Hanger

 

grade or above snow line.

Elbow

Straps

Terminate at least 2.1m (7') above a public

 

 

walkway, 1.8m (6') from the combustion air

 

Wall

Termination

intake of any appliance, and 0.9m (3') from

 

any other building opening, gas utility meter,

 

Slope vent Thimble

 

 

Downwards

 

service regulator etc.

 

 

Terminate at least 0.9m (3') above any

 

**0.3m (1') Min. -

 

forced air inlet within 3m (10'), 1.2m (4') be-

Appliance

0.9m (3') Max.

 

low, 1.2m (4') horizontally from or 0.3m (1')

Adapter*

 

 

above any door, window, or gravity air inlet

 

* Adapter not required when

 

into any building per National Fuel Gas Code

 

 

ANSI Z223.1/NFPA 54.

 

using Noritz N-Vent.

 

 

** 0.3m (1') minimum recommended,

• Slope the horizontal vent 1/4" downwards

 

but not required. Avoid installing

 

for every 300m (12").

 

elbow directly on flue.

 

 

 

• Use a condensation drain if necessary.

 

 

• In the Commonwealth of Massachusetts a

 

 

 

carbon monoxide detector is required for all

Vertical Vent Termination

 

side wall horizontally vented gas fuel equip-

 

ment. Please refer to Technical Bulletin TB

 

Rain

 

 

Cap

 

010606 for full installation instructions.

Storm

 

 

Collar

Roof

• Terminate at least 1.8m (6') from the combus-

 

 

Flashing

tion air intake of any appliance, and 0.9m (3')

 

 

Roof

 

from any other building opening, gas utility

Jack

 

meter, service regulator etc.

 

 

Firestop/

Support

 

Hanger

Firestop

Elbow

Strap

 

 

 

 

Condensation

 

 

Drain (Install

 

**0.3m (1') Min. -

According to

 

0.9m (3') Max.

Local Codes)

 

 

Appliance

 

 

Adapter*

 

 

* Adapter not required when

 

using Noritz N-Vent.

 

 

** 0.3m (1') minimum recommended,

 

but not required. Avoid installing

 

elbow directly on flue.

 

Enclose exterior vent systems below the roof line to limit condensation and protect against mechanical failure.

When the vent penetrates a floor or ceiling and is not running in a fire rated shaft, a firestop and support is required.

Terminate the vent system at least 0.6m (2') above, but not more than 1.8m (6') above the roof line, or according to the vent pipe manufacturer's instructions.

Terminate the vent system at least 0.6m (2') above any portion of a building located within 3m (10') horizontally.

Provide vertical support every 3.6m (12') or as required by the vent pipe manufacturer's in- structions.

Slope the horizontal vent 1/4" for every 300m (12") towards the drain tee.

Do not vent straight upwards.

Always have a horizontal section of venting.

Install a condensation drain in the horizontal section of the venting.

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Pentax N-0751M-OD installation manual Horizontal Vent Termination, Vertical Vent Termination

N-0751M-OD, N-0751M specifications

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