Vent Pipe Installation - Noritz NR83-DVC Installation Manual

8.

Vent Pipe Installation

CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Be sure to do
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with NSCNGPI.
• This appliance requires the use of special concentric type vent pipe specifi ed by Noritz America.
Do not attempt to use materials that are not specifi ed for use on this appliance.
Straight Termination Installation Precautions.
Note the following vent terminal installation requirements.
• Do not install the vent terminal indoors
• Install with the proper length protruding through the wall
0.8"-3"
(20-75mm)
Proper installation.
The red line can be
seen, but not more
than 2.2" (55mm)
from the wall.
• Avoid installing the terminal where obstacles
will block it
Vent terminal
• Clearance from vent terminal.
If multiple units are installed, the concentric vent terminals must be separated
by a minimum of either 12" (300mm) horizontally or 60" (1.5m) vertically.
12" (300mm) or more
10
not far
enough
Vent terminal
Snow
drift
Vent terminal
WARNING
•
Do not cover the vent terminal with any type of protective
screen or enclosure. Blocked terminals can cause abnor-
mal combustion resulting in undesired performance from
the water heater.
< 0.8"
(20mm)
too far
• Install the vent terminal with a downward slope
downward
slope
Tree
60" (1.5m) or more
Vent terminal
• Avoid storing hazardous
objects near the terminal
> 3" (75mm)
Gasoline
upward
slope
Gas