John Wood Noritz N-069M-DV - Manual (Page 45)

45
Vertical Vent Termination
• Terminate at least 6' from the
combustion air intake of any
appliance, and 3' from any
other building opening, gas
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 2' 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.
Appliance
Adapter
Firestop
Firestop/
Support
Roof
Flashing
RainCap
Exhaust
Intake Air
Hanger
Strap Elbow
Condensation
Drain (Install
According to
Local Codes)
3'
1-2'
6'
2'
Min.
(Combustible material)
Intake pipe
External wall,
combustible material
• Inspection openings are suggested for the vent intake and exhaust
pipes if they are installed in an enclosure. These openings should
be near the entrance and exit of the vent into the enclosure.
• These openings should be 18" x 18".
Suggested inspection openings (18" x 18")
When the intake/exhaust pipes pass through an enclosed space:
Ceiling
Sloping down toward vent terminal Exhaust pipe
SAR8192-2_035_045_E_J.p65 05.11.29, 9:01 PM Page 45 Adobe PageMaker 6.5J/PPC