DuraVent BV Installation Instructions Manual page 17

5.) If installed in a crawl space, rigid B-Vent
must extend through all penetration locations
(wall, ceiling, floor) by at least 3 inches
and must be supported/stabilized by using
a Support Assembly or by other generic
methods as shown in Figure 25 or figures
25a through 25e. NOTE: Not permitted in
Canada.
*If local code requires an attic insulation
shield to be installed above the attic floor, the
DuraConnect II B-Vent Segment must extend
above the Attic Insulation Shield.
TO INSTALL:
Select the length of Flexible Connector
sufficient to extend from Model BV Type B
Gas Vent to the appliance to be connected.
Insert the outlet (male) end into the inlet end
of the gas vent until it fully engages.
securely attached to Model BV, gently bend
the Flexible Connector in the direction of the
appliance to which it will be attached. Be
careful not to make any abrupt or sharp bends
or create any bends greater than 90 degrees.
Attach the inlet (female) end of the Flexible
Connector directly to the appliance draft hood
or the appliance flue collar.
It is available in 3", 4" and 5" diameters, both
having 2', 3', 4' and 5' lengths.
B-Vent
1" (25mm) Min.
Clearance
Attach To Model BV
or Universal Female
Adapter To Attach To
Other B-vent
Furnace or Water Heater
Fig. 20
Support
Assembly
Firestop
Trim
Collar
Wall Support
Strap
1" (25mm) Min.
Clearance
Fig. 19
To Compress Grasp
Firmly And Push
Downward, Working
Up From The Bottom
Until Desired Length
Is Achieved
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
DuraConnect II Wall Support Strap
Once
1" (25mm) Min.
Clearance
Flexible Connector
Model BVO - 4, 5 or 5/6
Oval Gas Vent Section
Model BV Type B
Gas Vent
1" (25mm) Min.
Clearance
Flexible Connector
Attach With Screws
To Wall / Ceiling
Clamp Around Flexible Length
Fig. 21
B-Vent
Fig. 22
Firestop
Trim Collar
Optional Appliance
Adapter Draft Hood
Connector
Fig. 23
Fig. 24
Double Wall
Fixed Wye
Or Tee
Tee Cap
1" (25mm) Min.
Clearance
Model BVO
Oval Double
Wall Tee
Model BVO
Oval Wall Tee
Support
2x4 for support
Double Wall
Fixed Wye
or Tee
Wall
Support
Strap
1" (25mm) Min.
Clearance
17