Carrier DIRECT VENT 4 58HDV Installation Instructions Manual page 30

2" (50.8mm) Max
12" " (304.8mm)
Min. Grade or
Snow Level
Combustion
Air
Fig. 26 - - Concentric Vent and Combustion- -Air
Roof Termination
1" (25.4mm)
Maximum
Combustion Air
Exhaust
Vent
Dimension "A" is touching or 2" (50.8mm) maximum separation.
Fig. 27 - - Concentric Vent and Combustion Air
Sidewall Termination
36" Min
Exhaust
(914.4mm)
OR
36"Min
(914.4mm)
A07718
Vent
"A"
25--22--02d
A07695
8" (203.2mm) Min.
20' (6.1m) Max.
Inlet
12" " (304.8mm)
Min. Grade or
Snow Level
Fig. 30 - - Rooftop Inlet Vent and Exhaust- -Air Termination
Exhaust
"A"
Inlet
12" " (304.8mm) Min.
Grade or Snow Level
Dimension "A" is touching or 2" (50.8mm) maximum separation.
Fig. 28 - - Sidewall Inlet Vent and Exhaust- -Air Termination
8" (203.2mm) Min.
20' (6.1m) Max.
Exhaust
"A"
Dimension "A" is touching or 2" (50.8mm) maximum separation.
Fig. 29 - - Sidewall Inlet Vent and Exhaust- -Air Termination
with Exterior Risers
Exhaust
18" (457.2mm) Min. for Cold Climates
[Sustained 0°F(- 17°C) and below for
24 hours or more consecutive hours]
25--22--43
A07698
30
"A"
8" Min.
8" (457.2mm) Min.
20' (6.1m) Max.
18" (457.2mm) Min. for Cold Climates
[Sustained 0°F(- 17°C) and below for
24 hours or more consecutive hours]
A07696
8" (203.2mm) Min.
12" (457.2mm)
Min. Grade or
Inlet
Snow Level
"A"
18" (457.2mm) Min. for Cold Climates
[Sustained 0°F(- 17°C) and below for
24 hours or more consecutive hours]
A07697