10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
FIG. 9 - Fixed Wye
Draft Hood
Connector
Draft
Hood
Connector
Adjustable
Length
Type B
Vent
45/60
Elbow
Common Vent
Fixed Wye
Type B Vent
45/60
Elbow
45/60
Elbow
appliance, or the larger of the two appliances.
This section can be rotated 360 degrees
with respect to the main body and branch of
the wye is at a 45 degree angle. If two fan
assisted appliances are used, Type B vent
should be used on both connector systems.
If only one fan assisted appliance is used,
and sizing guidelines permit a single wall
connector pipe may be attached to Model BV
Fixed Wye fitting with a Draft Hood Connector
and by inserting the crimped end of the single
wall connector into the Draft hood Connector
and attaching with three sheet metal screws
through the single wall pipe. Note: To
avoid excessive condensation, single wall
connectors should be used only in situations
where sizing recommendations permits.
When the wye fitting is attached to the
appliance with Type B vent, the final
connection can be made with either of two
adjustable lengths to eliminate the need for
special placement of either appliance.
Adjustable lengths are available in 12” and
18”.
VENT CONNECTOR TYPE AND SIZING
DuraVent Type B Gas Vent pipe meets all
building code and safety standards for use as
gas appliance vent connector and breechings.
Correct selection of connector and vent size
is detailed in the “National Fuel Gas Code”,
NFPA 54 in the US or the “Canadian Fuel Gas
Installation Code”, CSA-B149.1-00 in Canada
for Connector and Vent Capacities and sizing
recommendations.
MALE AND FEMALE UNIVERSAL
ADAPTERS
Male and female Universal Adapters are
available in 3” through 8” ID sizes. Universal
male adapters may be used to adapt to the
top (outlet) end of a compatible round, Type
B gas vent section, in order to continue the
system toward the termination with Model BV
joint coupling design.
Universal female adapters may be used to
adapt to the bottom (inlet) end of a compatible
Type B gas vent in order to continue the
system toward the appliance using DuraVent
round gas vent. The bottom end of the
adapter incorporates the Model BV joint
coupling design.
Compatibility
These fittings have been specifically
evaluated and listed for use in adapting to
other manufacturers of round Type B gas
vents.
The following Type B gas vent products are
directly compatible with DuraVent 3” through
8” Type B gas vent and require no adapters.
Selkirk(current and former)
Household Mfg. HVAC
Eljer HVAC
AirMate
Hart & Cooley
MALE ADAPTER - INSTALLATION
The male adapter is a fitting designed to
slide (telescope) down over the top end of
the adjacent gas vent section with the inner,
aluminum liner sliding inside the existing liner
and the outer wall sliding outside (over) the
outer wall (see Fig. 10A).
Longer (12” and 18”) versions of the universal
male adapter are offered as “Adjustable
Lengths” for use either (1) in adapting to
another manufacturer’s gas vent or (2) in
conjunction with another length section to
develop an assembly of a specific dimension.
TO INSTALL - Slide the adapter over the top
(outlet) end of the adjacent gas vent being
sure the aluminum inner wall slides within
and the outer slides over the top. Push the
adapter down until it overlaps at least 1-1/2”.
