Noritz N-132M Manuel D'installation page 47

Vertical Vent Termination
Elbow
3'
Max.
Appliance
Adapter
Rain
Cap
Firestop/
Support
Firestop
Hanger
Strap
Condensation
Drain (Install
According to
Local Codes)
• Terminate at least 6' from the
combustion air intake of any
appliance, and 3' from any
Roof
other building opening, gas
Flashing
utility meter, service regulator
etc.
• 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 3' above, but not more
than 6' above the roof line, or
according to the vent pipe
manufacturer's instructions.
• Provide vertical support every
12' or as required by the vent
pipe manufacturer's instructions.
• Slope the horizontal vent 1/4"
downwards for every 12".
• Do not vent straight upwards.
Always have a horizontal section
of venting.
• Install a condensation drain in
the horizontal section of the
venting.
47