Reznor UDBP Option - Installation - Power Venting - Manual (Page 10)

Form I-UD-V-PV, Page 10
ADDENDUM
Section A
-
Instructions for
Attaching Double-
Wall Vent Pipe
(Type-B)
FIGURE 5 - Attaching
Double-Wall (Type B)
Pipe to Single-Wall
Pipe
Figure 5 - STEP 1
On the single-wall pipe, where
illustrated, place a continual 1/4
inch bead of silicone sealant
around the circumference. Do
STEP 2 immediately following
STEP 1.
Figure 5 - STEP 2
Insert the single-wall pipe into
the inner pipe of the double-
wall pipe until the bead of
sealant contacts the inner pipe
creating a sealed joint.
Figure 5 - STEP 3
Spaced equally around
the double-wall pipe, drill
three small holes below the
sealant ring. Insert 3/4 inch
long sheetmetal screws
to secure the joint. Do not
over tighten screws.
FIGURE 6 - Attaching Double-Wall (Type B) Pipe to a Vent Cap
Figure 6 - STEP 1
Place a continual 3/8” bead
of silicone sealant around
the circumference of the
vent cap collar. This will
prevent any water inside
the vent cap from running
down the double-wall pipe.
Do STEP 2 immediately
following STEP 1.
Figure 6 - STEP 2
Secure the vent cap to
the double wall pipe by
drilling and inserting
a 3/4” long sheetmetal
screw into the vent cap
collar. Do not over tighten
screw.
Insert the collar on the vent
cap inside the inner wall of
the double-wall pipe. Insert
as far as possible. Add
additional silicone sealant
to fully close any gaps
between the vent cap and
the double wall pipe. This
is necessary to prevent
water from entering the
double wall pipe.
Figure 6 - STEP 3
Single-
Wall
Vent
Pipe
Single-
Wall
Vent
Pipe
with
Sealant
Double-
Wall
Pipe