Gee Gee new furnace specification 12-3-18GENERAL VENTING REQUIREMENTS AND
GUIDELINES
DIRECT VENT (cont.)
Figure 23 below shows the necessary detail for the roof penetration on a standard direct -vent vertical termination.
FIGURE 23
DIRECT VENT VERTICAL TERMINATION DETAIL
TOP OF
EXHAUST
15" MIN. 12" MIN.
(38 cm) (31 cm)
48" MAX. 45' MAX. I
(122 cm) (114 cm) 3" MIN.
1 1 (8 cm)
DETAIL A
TERMINATION HEIGHT REQUIREMENTS
COMBUSTION AIR Terminations more than 24"
TERMINATION above roof penetration re-
quire additional support.
INLET ELEVATION
12" (31cm) U.S. MAX. AVERAGE
36" MAX. CANADA: TERMINATIONS ANTICIPATION
(91 cm) MUST CONFORM TO SNOW LEVEL
CSA B149.1-10, SECT. 8.14
*3" (8cm) minimum only if no snow accumulation is anticipated.
ROOF LINE OR
PENETRATION
NOTE: IF 3" 0 VENTING IS
USED, BOTH PIPES (INTAKE
AND EXHAUST) MUST BE
REDUCED TO 2" 0 BEFORE
PENETRATING ROOF.
3" VENT = REDUCER/ ADAPTER
2" VENT = START OF TERMINATION AND END
EQUIV. VENT LENGTH
ST -A1194 -18-X0
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