Form I-VR (10-14), P/N 205202 R14, Page 45
Addendum
FIGURE 47 -
Attaching Double-
Wall (Type B) Pipe to
Single Wall Pipe
FIGURE 47 - STEP 1
On the single-wall pipe, where illus
-
trated, place a continual 1/4 inch
bead of silicone sealant around the
circumference. Do STEP 2 immedi
-
ately following STEP 1.
FIGURE 47 - 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 47 - STEP 3
Spaced equally around the double-wall
pipe, drill three small holes below the
sealant ring. Insert 3/4 inch long sheet
-
metal screws to secure the joint. Do not
over tighten screws.
FIGURE 48 -
Attaching Double-
Wall (Type B) Pipe
to a Vent Cap
FIGURE 48 - STEP 1
Place a continual 3/8” bead of silicone sealant
around the circumference of the vent cap col
-
lar. This will prevent any water inside the vent
cap from running down the double-wall pipe. Do
STEP 2 immediately following STEP 1.
FIGURE 48 - 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 pre
-
vent water from entering the double wall pipe.
FIGURE 48 - STEP 3
Single-
Wall Vent
Pipe
Single-
Wall
Vent
Pipe
with
Sealant
Double-
Wall
Pipe
NOTE:
Only single-wall vent pipe can be attached to the exhaust heat
exchanger tube.
Instructions for Attaching
Double-Wall Vent Pipe (Type-B)