Carrier 59SP5A Installation, Start-Up, Operating And Service And Maintenance Instructions page 53

Roof T e rm ination (Pref erred)
At least 36 in.
(914mm)
V e r tical separation
between comb ustion
air and v ent
8 3/4 in. (222mm)f or 3 in. (76mm)ki t
(457mm)
6 3/4 in. (172mm)f or 2 in. (51mm) ki t 18 in. maximu m
Maintain 12 in. (305mm)min.
clearance abo ve
highest anticipated
sno w le ve l
Maximum of 24 in.(614mm)
abo v e roof
Note: "A" denotes 0 to < 2 in.
Between the first 2 vents
Third vent must be > 36 in. away
90 °
Fig. 47 - - Combustion Air and Vent Pipe 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. 48 - - Vent Pipe Termination for Non- -Direct Vent and Ventilated Combustion Air System
A
Abandoned masonr y
used as race wa y
(per code)
(51mm)
(914mm)
12 in. min fro m
ov erhang or roof
(typ)
At least 36 in.
12 in. (305mm)
separation between
bottom ofcomb ustion air and
A
bottom of v ent (typ)
in. (305mm)
Maintain 12
min. clearance abo ve
highest anticipated
sno w le ve l or grade
whiche ve r 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.
53
Concent ri c V ent and Comb ustion Ai r
Roof T er mination (pre fe rred)
A
At least
36 in.
(914mm)
A
(914mm)
Side wa ll te rm inatio n
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 abo ve
highest anticipated
sno w le ve l, maximum of
24 in . abo v e roof
in. (25mm)
1 maximum (typ) from wall to inlet
in. (305mm)
12 minimum fro m
ov erhang or roof
A
(305mm)
Maintain 12 in.
min. clearance ab ov e
highest anticipated
sno w le v el or grade
which eve r is greate r
Concent ri c V ent
and Comb ustion - Air
Side T e rm inatio n
A05090
Maintain 12 in. (305mm)
minimum clearance
above highest anticipated
snow level or grade
whichever is greater
A05091