Rheem 97MDV060 Series Installation Instructions Manual page 34

GENERAL VENTING REQUIREMENTS AND
GUIDELINES
DIRECT VENT (cont.)
Figure 17 below shows the necessary detail for the roof penetration on a standard direct-vent vertical termination.
FIGURE 17
DIRECT VENT VERTICAL TERMINATION DETAIL
48" MAX. 45" MAX.
(122 cm) (114 cm)
*3" (8cm) minimum only if no snow accumulation is anticipated.
34
3" MIN.
*
36" MAX.
(8 cm)
(91 cm)
Terminations more than 24"
above roof penetration re-
quire additional support.
12" (31cm) U.S.
CANADA: TERMINATIONS
MUST CONFORM TO
CSA B149.1-10, SECT. 8.14
NOTE: IF 3 Ø VENTING IS
USED, BOTH PIPES (INTAKE
AND EXHAUST) MUST BE
REDUCED TO 2 Ø BEFORE
PENETRATING ROOF.
ST-A1194-18-XO
DETAIL A