Allied Air Enterprises 92G1UH, A95UH, 95G1UH, A93UH Direct Vent Application Using Existing Chimney

DIRECT VENT CONCENTRIC WALL TERMINATION

71M80, 69M29 OR 60L46 (US)

41W92 or 41W93 (Canada)

Figure 34

OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT INSTALLATION OF DIRECT VENT WALL TERMINATION

Figure 35

DIRECT VENT APPLICATION

USING EXISTING CHIMNEY

NOTE: Do not discharge exhaust gases directly into any chimney or vent stack. If vertical discharge through an existing unused chimney or stack is required, insert piping inside chimney until the pipe open end is above top of chimney and terminates as illustrated. In any exterior portion of chimney, the exhaust vent must be insulated.

Figure 36

Details of Exhaust Piping Terminations for Non-Direct Vent Applications

Exhaust pipes may be routed either horizontally through an outside wall or vertically through the roof. In attic or closet installations, vertical termination through the roof is preferred. Figures 37 through 40 show typical terminations.

1.Exhaust piping must terminate straight out or up as shown. The termination pipe must be sized as listed in Table 6. The specified pipe size ensures proper velocity required to move the exhaust gases away from the building.

2.On field supplied terminations for side wall exit, exhaust piping may extend a maximum of 12 inches (305 mm) for 2” PVC and 20” (508 mm) for 3” (76 mm) PVC beyond the outside wall. See Figure 38.

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