TABLE 3
VERTICAL VENT REQUIREMENTS
MODEL | INSTALLATION | FLUE TYPE | FLUE | AIR | VENT CAP | OTHER |
|
| AIR INLET TYPE | DIA. | INLET |
|
|
|
|
|
| DIA. |
|
|
45 | COMMERCIAL | SINGLE WALL | 3” | 3” | U.L. APPROVED | MAY USE ONE |
| or | SINGLE WALL or |
|
|
| SECTION OF B- |
| RESIDENTIAL | METAL FLEX VENT |
|
|
| VENT |
45 | COMMERCIAL | TYPE B VENT | 3” | 3” | U.L. APPROVED |
|
| or | SINGLE WALL or |
|
|
|
|
| RESIDENTIAL | METAL FLEX VENT |
|
|
|
|
45 | COMMERCIAL | CONCENTRIC | 3” | 3” | 4” CONCENTRIC |
|
| or | SINGLE WALL or |
|
| VENT/ ADAPTER/CAP |
|
| RESIDENTIAL | METAL FLEX VENT |
|
| KIT REQUIRED |
|
60, 75 | COMMERCIAL | SINGLE WALL | 4” | 4” | U.L. APPROVED | MAY USE ONE |
| or | SINGLE WALL or |
|
|
| SECTION OF B- |
| RESIDENTIAL | METAL FLEX VENT |
|
|
| VENT |
60, 75 | COMMERCIAL | TYPE B VENT | 4” | 4” | U.L. APPROVED |
|
| or | SINGLE WALL or |
|
|
|
|
| RESIDENTIAL | METAL FLEX VENT |
|
|
|
|
60, 75 | COMMERCIAL | CONCENTRIC | 4” | 4” | 4” CONCENTRIC |
|
| or | SINGLE WALL or |
|
| VENT/ ADAPTER/CAP |
|
| RESIDENTIAL | METAL FLEX VENT |
|
| KIT REQUIRED |
|
100, 125 | COMMERCIAL | SINGLE WALL | 5” | 4” | U.L. APPROVED | MAY USE ONE |
| or | SINGLE WALL or |
|
|
| SECTION OF B- |
| RESIDENTIAL | METAL FLEX VENT |
|
|
| VENT |
100, 125 | COMMERCIAL | TYPE B VENT | 5” | 4” | U.L. APPROVED |
|
| or | SINGLE WALL or |
|
|
|
|
| RESIDENTIAL | METAL FLEX VENT |
|
|
|
|
100, 125 | COMMERCIAL | CONCENTRIC | 5” | 4” | 5” CONCENTRIC |
|
| or | SINGLE WALL or |
|
| VENT/ ADAPTER/CAP |
|
| RESIDENTIAL | METAL FLEX VENT |
|
| KIT REQUIRED |
|
HORIZONTAL VENTING - RESIDENTIAL INSTALLATION
UPWARD SLOPE
MAY BE SINGLE WALL (26 GSG) GALV. OR EQUIVALENT STAINLESS STEEL SEALED ACCORDING TO THESE INSTALLATION INSTRUCTIONS OR A SINGLE SECTION OF TYPE
VENT TERMINATION
(TERMINATIONS MAY USE WIRE MESH BIRD SCREEN)
12” (30.5 CM) MIN. FROM
AIR INLET TO VENT TERMINATION (MAY
BE HORIZONTAL OR VERTICAL CLEARANCE)
12” (30.5 CM) MINIMUM ABOVE HIGHEST SNOWFALL
12” (30.5 CM) MIN. FROM WALL TO
VENT TERMINATION
LISTED THIMBLE
THROUGH
COMBUSTIBLE WALL
AIR INLET TERMINATION
NOTE - MINIMUM HORIZONTAL LENGTH 3 FT. (91.4 CM) NOT INCLUDING TERMINATION. MAXIMUM HORIZONTAL VENT LENGTH 5 FT. (1.5M) PLUS ONE
GROUND LEVEL
COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER.
FIGURE 6
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