Specifications

13
A. O. Smith Water Products Service Handbook
Ashland City, Tennessee 2005
©
Training Department
WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would
jeopardize the safety and health of inhabitants.
• A maximum of two elbows can be used on inlet and outlet vent piping respectively. Each elbow is equal to 10 feet
(3 m) of straight pipe.
TABLE 10. DIRECT VENT (HORIZONTAL EXHAUST CONFIGURATIONS)
APPLIANCE CERTIFIED VENT MAXIMUM AIR INTAKE AIR INLET MAXIMUM
MODEL CATEGORY EXHAUST VENT SIZE VENT LENGTH MATERIAL SIZE AIR INTAKE
MATERIAL (INCHES) (FEET) (INCHES) LENGTH (FEET)
GAL. STEEL
RO SBA ,CVPIII
CPVC
GAL.STEEL
RC SBA ,CVPIII
CPVC
GAL. STEEL
RO SBA ,CVPIII
CPVC
GAL. STEEL
RO SBA ,CVPIII
CPVC
GAL. STEEL
RO SBA ,CVPIII
CPVC
I000
1300
1500
1850
2100
2500
AL29-4C
STAINLESS
(SEALED)
AL29-4C
STAINLESS
(SEALED)
AL29-4C
STAINLESS
(SEALED)
AL29-4C
STAINLESS
(SEALED)
AL29-4C
STAINLESS
(SEALED)
10"
(25.4 cm)
12"
(30.5 cm)
14"
(35.6 cm)
14"
(35.6 cm)
16"
(40.6 cm)
35'
(10.7 m)
35'
(10.7 m)
20'
(6.1 m)
20'
(6.1 m)
20'
(6.1 m)
35'
(10.7 m)
35'
(10.7 m)
20'
(6.1 m)
20'
(6.1 m)
20'
(6.1 m)
8"
(20.3 cm)
10"
(25.4 cm)
10"
(25.4 cm)
12"
(30.5 cm)
12"
(30.5 cm)
DIRECT VENT - HORIZONTAL (CATEGORY III)