Bryant 987MA Installation, Start-Up, Operating And Service And Maintenance Instructions page 59

¾ in. (222mm) for 3 in. (76mm)
¾ in. (172mm) for 2 in. (51mm)
Fig. 47 - - Combustion Air and Vent Pipe Termination for Direct Vent (2- -Pipe) System
Fig. 48 - - Vent Pipe Termination for Non- -Direct Vent and Ventilated Combustion Air System
12 in. (305mm) min. separation
between bottom of combustion
air and bottom of vent (Typ.)
Roof Termination (Preferred)
Vent
Maintain 12 in (305mm) .
minimum clearance
above highest anticipated
snow level maximum of
24 in. (610mm) above roof .
Abandoned masonry
used as raceway
(per code)
12 in. (305 mm) min. from
overhang or roof
90°
Maintain 12 in. (305mm)
minimum clearance
above highest anticipated
snow level or grade
whichever is greater.
Side wall termination
with 2 elbows (preferred)
59
12 in. min. (305 mm)from
overhang or roof
6 in. (152mm) minimum clearance
between wall and end of vent pipe.
10 in. (254mm) maximum pipe lengt h
Sidewall Termination
with Straight Pipe (preferred)
A13305
Maintain 12 in. (305mm)
minimum clearance
above highest anticipated
snow level or grade
whichever is greater
A05091