UDZ Venting Instructions
Table Of Contents
- VENTING INSTRUCTIONS FOR UNIT HEATERS (MODEL UBZ: SEPARATED-COMBUSTION BLOWER TYPE AND MODEL UDZ: SEPARATED-COMBUSTION FAN TYPE)
- GENERAL INFORMATION
- INSTALLATION
- APPENDIX: INSTRUCTIONS FOR ATTACHING DOUBLE-WALL TYPE B VENT PIPE TO SINGLE-WALL PIPE
- FIGURES
- Figure 1. Typical Combustion Air Inlet and Venter Outlet Connections
- Figure 2. Concentric Adapter Box
- Figure 3. Concentric Adapter Box Dimensions (Refer to Table 4)
- Figure 4. Concentric Adapter Box Connections (Refer to Table 4)
- Figure 5. Vent Terminal Options
- Figure 6. Option CC2 Components
- Figure 7. Option CC2 Installation
- Figure 8. Concentric Adapter Box Brackets
- Figure 9. Combustion Air Pipe Installation
- Figure 10. Combustion Air Pipe Through Roof
- Figure 11. Combustion Air Inlet and Vent Terminal
- Figure 12. Option CC6 Components
- Figure 13. Option CC6 Installation
- TABLES
- Table 1. Combustion Air Inlet and Venter Outlet Connection Sizes
- Table 2. Concentric (Outdoor) Pipe Sizes
- Table 3. Diameter and Length of Pipe from Heater to Concentric Adapter Box
- Table 4. Vent Pipe Opening Diameter
- Table 5. Concentric Adapter Box Vent Pipe Sizes
- Table 6. Vertical Vent Terminal/Combustion Air Package (Option CC2) Components
- Table 7. Minimum Spacing Between Center Lines of Vertical Vent Pipes
- Table 8. Horizontal Vent Terminal/Combustion Air Package (Option CC6) Components
- Table 9. Minimum Clearance Requirements for Horizontal Vent Termination Location
APPENDIX: INSTRUCTIONS FOR ATTACHING DOUBLE-WALL TYPE B VENT PIPE
TO SINGLE-WALL PIPE
NOTE: Work quickly to assemble components before sealant dries.
STEP 1: Place continual 1/4-
inch bead of silicone sealant
around circumference of
single-wall pipe.
STEP 2: Before sealant can dry,
insert single-wall pipe into inner
pipe of double-wall pipe until
bead of sealant contacts inner
pipe to create sealed joint.
STEP 3: Drill three small holes
spaced equally around double-
wall pipe below sealant ring.
Secure joint using 3/4-inch-
long sheet metal screws. Do
not overtighten screws.
Double-
Wall Pipe
STEP 4: Place continual 3/8-
inch bead of silicone sealant
around he circumference of
vent cap collar to prevent any
water inside vent cap from
running down double-wall pipe.
STEP 6: Drill small hole
through vent cap and double-
wall pipe. Secure joint using
3/4-inch-long sheet metal
screw. Do not overtighten
screw.
STEP 5: Before sealant can dry,
insert collar on vent cap as far
as possible inside inner wall of
double-wall pipe. Apply silicone
sealant to fully close any gaps
between vent cap and double-
wall pipe to prevent water from
entering double-wall pipe.
STEP 7: Place continual 1/4-
inch bead of silicone sealant
around circumference of
venter outlet collar.
STEP 8: Before sealant can dry, slide double-wall pipe over collar
so that collar is inside inner pipe. Push double-wall pipe tight to
heater cabinet. Drill three small holes through the pipe and into collar
spaced equally around pipe below sealant ring. Secure joint using
3/4-inch-long sheet metal screws. Do not overtighten screws.
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CP-UBZ-UDZ-VENT (02-21) 1034632-0