John Wood Noritz Condensing - N-0841MC - Manuel (Page 53)

53
Horizontal Vent Termination- 75mm (3") Concentric PVC/CPVC Termination
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Hanger
Straps
The concentric termination may be shortened,
but not lengthened from its original factory
supplied length.
Terminate at least 300mm (12") above grade or
above snow line.
Terminate at least 2.1m (7') above a public walkway,
1.8m (6') from the combustion air intake of
any appliance, and 0.9m (3') from any other
building opening, gas utility meter, service
regulator etc.
Teminate at least 0.9m (3') above any forced air
inlet within 3m (10'), 1.2m (4') below, 1.2m (4')
horizontally from or 0.3m (1') above any door,
window, or gravity air inlet into any building per
National Fuel Gas Code ANSI Z223.1/NFPA 54.
Slope the horizontal vent 1/4" upwards
for every 300mm (12").
Use a condensation drain if necessary.
In the Commonwealth of Massachusetts
a carbon monoxide detector is required
for all side wall horizontally vented gas
fuel equipment. Please refer to Technical
Bulletin TB 010606 for full installation in
structions.
75mm (3")
Intake
75mm (3")
Exhaust
PVC/CPVC
Adapter*
PVC/CPVC
Coupling
* Not supplied with water
heater, order separately.
Slope vent
Upwards
25mm (1")
Minimum
Pipe diameter
No. of Elbows
3 3m (10')
2 3.9m (13')
1 4.8m (16')
Insert Bird Screen
in End of Termination
**Not including the concentric termination
• There must be a minimum of 25mm (1") clearance
between the outside wall and the air intake section
of the termination as illustrated on the left.
• Install a securing strap to prevent movement of
the termination.
Strap
Max. Straight Vent Length**
75mm (3") PVC or CPVC