Reznor UDBP Option - Installation - Power Venting - Manual (Page 11)

Form I-UD-V-PV, P/N 195675R12, Page 11
FIGURE 7 -
Attaching Double-
Wall (Type-B) Vent
Pipe to the Heater
Figure 7 - STEP 1
Place a continual 1/4” bead
of silicone sealant around the
circumference of the venter
outlet collar.
Do STEP 2 immediately after
STEP 1.
Figure 7 - STEP 2
Slide the double-wall pipe over the collar so that
the collar is inside the inner pipe. Push the double-
wall pipe tight to the heater cabinet. To secure the
connection, spaced equal distance around the pipe,
drill and insert three 3/4” long sheetmetal screws
through the pipe and into the collar. Do not over
tighten the screws.
SUPPLIER NOTE: The adapters for Flex-L vent pipe illustrated in FIGURE 8 are
not available from Reznor ® ; the adapters are available from a Flex-L brand vent
pipe distributor. These instructions are designed to assist the contractor who
has selected to use Flex-L brand Category III vent pipe to install a Reznor ® power
vented heater with a 4” (102mm) venter outlet.
1. Attach the Adapter Pipe or Reducer to the Venter Collar
a) On the end of the adapter or reducer that attaches to the venter collar (the
end of the adapter with the double emboss without the locking ring hole), run
a continuous bead of high temperature silicone around the inside of the pipe.
See FIGURE 9.
FIGURE 8 - Flex-L
brand Vent Pipe
Adapters
4” (102mm) diameter, 12” long Adapter Pipe,
Flex-L ® #SRARZA4, specially designed for
attaching Flex-L brand Category III vent pipe to
a Reznor ® Model UDAP or UDBP 30, 45, 60, 75,
100, and 125 for 4” (102mm) diameter vent pipe.
4” to 3” (102 to 76mm) diameter, 6-3/4” long
Adapter Reducer, Flex-L #SRARZA43, specially
designed for attaching Flex-L brand Category III
vent pipe to a Reznor ® Model UDAP or UDBP 30,
45, and 60 for 3” (76mm) diameter vent pipe.
ADDENDUM
Section B
-
Instructions for
Installing Flex-L
brand Category
III Vent Pipe on
a Reznor ® Model
UDAP or UDBP
Power-Vented
Heater
Vent flow
Vent flow
Slide the adapter pipe or reducer over the venter
outlet. Secure with a sheetmetal screw.
Run a continuous bead
of high temperature
silicone around the
inside of the pipe.
Sheetmetal Screw
FIGURE 9 - Attach to
Venter Outlet