Carrier Infinity ICS 58MVC 100 Series Installation Instructions Manual page 33

Roof T e rmination (Preferred)
At least 36 in.
(914mm)
Vertical separation
between combustion
air and vent
8 3/4 in. (222mm)for 3 in. (76mm)kit
(457mm)
6 3/4 in. (172mm)for 2 in. (51mm) ki t 18 in. maximum
Maintain 12 in. (305mm)min .
clearance above
highest anticipated
snow level
Maximum of 24 in.(614mm)
above roof
Note: "A" denotes 0 to < 2 in.
Between the first 2 vents
Third vent must be > 36 in. away
90°
Fig. 36 - - Combustion Air and Vent Termination for Direct Vent (2- -pipe) System
Maintain 12 in (305mm)
minimum clearance
above highest anticipated
snow level maximum of
24 in. (610mm) above roof
Side wall termination
with 2 elbows (preferred)
Fig. 37 - - Vent Pipe Termination for Ventilated Combustion Air System
A
Abandoned masonry
used as raceway
(per code)
(51mm)
(914mm)
12 in. min from
overhang or roof
(typ)
At least 36 in.
12 in. (305mm)
separation between
bottom ofcombustion air and
A
bottom of vent (typ)
in. (305mm)
Maintain 12
min. clearance above
highest anticipated
snow level or grade
whichever is greater (typ)
Roof Termination (Preferred)
Vent
.
.
Abandoned masonry
used as raceway
(per code)
10 in. (254mm) maximum pipe lengt h
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.
33
Concentric Vent and Combustion Air
Roof Termination (preferred)
A
At least
36 in.
(914mm)
A
(914mm)
Side wall termination
in. (305mm)
of less than 12 above highest snow level
12 in. min. (305 mm)from
overhang or roof
6 in. (152mm) minimum clearance
between wall and end of vent pipe.
Sidewall Termination
with Straight Pipe (preferred)
Maintain 12 in. (305mm)
min. clearance above
highest anticipated
snow level, maximum of
24 in. above roof
in. (25mm)
1 maximum (typ) from wall to inlet
in. (305mm)
12 minimum from
overhang or roof
A
(305mm)
Maintain 12 in.
min. clearance above
highest anticipated
snow level or grade
whichever is greater
Concentric Vent
and Combustion - Air
Side T e rmination
A05090
Maintain 12 in. (305mm)
minimum clearance
above highest anticipated
snow level or grade
whichever is greater
A05091