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
9
CP-UBZ-UDZ-VENT (02-21) 1034632-0
Table 6. Vertical Vent Terminal/Combustion Air Package (Option CC2) Components
Unit Size
Description Qty030–125 150–400
PN
205895 205896 Kit package 1
205884 205885 Concentric adapter box (see Figure 2, Figure 3, and Figure 4) 1
110051 110052 Exhaust vent terminal assembly (see Figure 6) 1
155635 53330 Combustion air inlet assembly (see Figure 6) 1
207232 Concentric adapter box bracket 2
53335 High-temperature silicone sealant, tube 1
EXHAUST VENT TERMINAL ASSEMBLY
COMBUSTION AIR INLET ASSEMBLY
Figure 6. Option CC2 Components
Install the vertical vent kit as follows:
⚠ DANGER ⚠
To prevent combustion products from entering the occupied space, all vent terminals must be
positioned or located away from fresh air intakes, doors, and windows. Failure to comply could
result in severe personal injury or death and/or property damage.
1. Determine vent terminal location on outside wall:
a. If more than one vertical vent terminal is being installed, minimum spacing between vent center lines is
determined by minimum outdoor design temperature (coldest outdoor condition at installation site). Refer to
Table 7 to ensure that location complies with minimum outdoor design temperature requirements.
Table 7. Minimum Spacing Between Center Lines of Vertical Vent Pipes
Minimum Outdoor Design Temperature
Minimum Spacing Between Center Lines of Vertical Vent Pipes
(Inches (mm))
≥31°F (≥0°C) 36 (914)
−10 to 30°F (−23 to −1°C) 60 (1524)
< −10°F (< −23°C) 84 (2134)
b. Select location away from fresh air intakes, allowing space for concentric adapter box inside. Vent terminal
must be located away from adjacent buildings as shown in Figure 7.