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VENTING
Breathing
Hazard
° Catben
Monoxide
Gas
Install vent system in accordance
with
codes.
" Do not operate water
heater if hood
damaged.
- High altitude odhce must be installed for
operation above7,700
feet (2,347 m)
o Do not operate if soot buildup
" Do not obstruct water heater air intake
with insulating jacket.
- Do not place cheraicd
vapor emitting
products near water heater
" Gas and carbon
monoxide
detectors
are available.
,, Never operate the heater unless it _s
vented to the outdoors and has adequate
air supply to avoid risks of improper
operation, fire, explosion, or asphyxiation
o Make sure the flue baffle and flue restrtctor
ring are properly aligned and inserted on
top of the flue. This can be checked
through the dilution air inlet of the blower
assemb_j. For _ewing, the Air Intake screen
d the blower assembly will have to be
removed Replace after the check is made
Breathing carbon monoxide can cause brain damage or death
Always read and understand instruction manual
The vent system
must
terminate
so that proper
clearances
are
maintained
as cited in local codes or the current edition of the National
Fuel Gas Code, ANSi Z223.1/NFPA54,
7.3.4e and 7.8a,b, as follows:
1. The exit terminals
of a mechanical
vent system shall be not less
than 7 feet (2. ! 3 m) above grade when located adiacent
to public
walkways,
see Figure 23.
2. A venting system shall terminate
at least 3 feet (91 cm) above any
forced air inlet located within 10 feet (3.1 m), see Figure 23.
3. The venting system shall terminate
at least 4 feet (1.2 m) below, 4
feet (! .2 m) horizontally
from or, 12 in. (30 cm) above any door,
window or gravity air inlet into any building.
The manufacturer
also recommends
that the vent termination should
not be installed closer than 3 feet (91 cm) from an inside corner of an
L shaped structure and not be less than 12 in. (30 cm) above grade.
The vent shall terminate a minimum of 12" (30.5 cm) above expected
snow, all level to prevent blockage of vent termination,
see Figure 23.
4. In cold climates, it is recommended that vent termination not be mounted
directly above or within 3 feet (91 cm) horizontally from an oil tank vent or
gas meter to avoid potential freeze-up from condensation, see Figure 23.
Plan the vent system layout so that proper clearances
are maintained
from plumbing and wiring.
Vent pipes serving power vented appliances
are classified by building
codes as "vent connectors".
Required
clearances
from combustible
materials must be provided in accordance with information in this manual
under FACTS TO CONSIDER
ABOUT THE LOCATION
and VENT
TERMINAL
INSTALLATIONS,
and with the National Fuel Gas Code and
local codes.
VENT TERMINAL INSTALLATION
After the point of termination
has been determined,
use the cover
plate as a template
to mark the hole for the vent pipe to insert
through the wall. BEWARE OF CONCEALED
WIRING AND PIPING
INSIDE OFWALL
If the Vent Terminal is being installed on the outside
of a finished
wall, it may be easier to mark both the inside and outside
walk
Align the holes by drilling a hole through the center of the template
from the inside through to the outside.
The template can now be
positioned on the outside wall using the drilled hole as a centering
point for the template.
A) MASONRY SIDE WALLS
Chisel an opening
approximately
one half inch larger than the
marked circle.
B) WOODEN SIDE WALLS
Drill a pilot hole approximately
one quarter
inch outside
of the
marked
circle.
This pilot hole is used as a starting
point for a
saws=all or sabre saw blade. Cut around the marked circle staying
approximately
one quarter inch outside of the line. (This will allow
the vent
pipe to easily slide through the opening.
The resulting
gap will be covered up by the vent terminal cover plates.)
Repeat
this step on inside wall if necessary.
When the vent piping cannot pass through an outside
wall at a
height greater
than or equal to 12" above the ground (or above
snow accumulation
level), then the installation
can be modified as
shown
below.
12"MIN.
ABOVE
GROUNDORSNOW
ACCUMULATIONLEVEL
FIGURE22.
18
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