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4
INSTALLATION OF FDVS DIRECT VENT SYSTEM
Installation of the Vent Termination
1. Remove vent system components from box and inspect for
damage. If the carton has been crushed or mutilated, check
components very carefully for damage. DO NOT install if
any damage is apparent.
2. Remove the combustion air tee assembly from the vent
termination. Set the tee aside for later use.
3. The location of the vent termination must be installed
according to all local codes that are applicable. In the USA
according to the latest version of the National Fire
Protection Association NFPA-31,National Fuel Gas Code
ANSI Z223.1. Where requirements for venting standards
differ the most stringent standard shall apply. In Canada
according to the latest version of CSA B140 and the
CSA B139 Installation Code. Refer to the following
requirements or See Diagram A for typical locations.
a. The exit termination of mechanical draft systems shall
not be less than 7' above grade when located adjacent
to public walkways.
b. A venting system shall terminate at least 3' above any
forced air inlet located within 10'.
c. The venting system of other than a direct vent appliance
shall terminate at least 4' below, 4' horizontally from, or
1' above any door, window or gravity air inlet into the
building.
d. The vent termination of a direct vent appliance with an
input of 50,000 BTU's per hour or less, shall be located
at least 9" from any opening through which vented
gases could enter the building. With input over 50,000
BTU's per hour, a 12" termination clearance shall be
required.
e. The vent termination point shall not be installed closer
than 3' from an inside corner of an L-shaped structure.
f.
The vent termination should not be mounted directly
above, or within 3' horizontally from an oil tank vent or
gas meter.
g. The bottom of the vent terminal shall be located at least
12" above finished grade or expected snow line, which
ever is greater.
4. After determining the location of the venting system
termination (See Diagram A), cut a hole in the wall sized
according to "L" dimension in Table 1. (See Figure 1)
5. Seal the back side of the base plate around the outer pipe
of the vent termination with a bead of high temperature sili
cone sealant. (See Figure 2) Mount the vent termination
through the wall, keeping the outer pipe centered in the
hole. (See Figure 1) Fasten the vent termination to the out
side wall with appropriate fasteners. Seal the edges
of the vent termination base plate to the wall with a high-
temperature silicone sealant.
6. Mount the backing plate over the outer pipe. Fasten the
backing plate to the inside wall with appropriate fasteners.
(See Figure 2) DO NOT BLOCK the intake or exhaust
openings, or the intake access panel on the vent
termination body. Wood or vinyl siding should be cut so that
the unit mounts directly on the wallboard to provide a stable
support. If the siding is greater than 1/2" thick use a spacer
plate or board behind the vent termination mounting plate.
(See Figure 2)
(c)
(a)
(c)
Diagram A
Figure 1. End View
Model
FDVS-4
Table 1.
Figure 2. Side View
EC10DV SERIES
(b)
(e)
(c)
(g)
"L"
7-1/4"
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