Specifications

11
A. O. Smith Water Products Service Handbook
Ashland City, Tennessee 2005
©
Training Department
STANDARD VENT - HORIZONTAL (CATEGORY III)
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 90° elbow is equal to 10
feet (3 M) of straight pipe.
APPLIANCE CERTIFIED EXHAUST MAXIMUM
MODEL CATEGORY VENTING VENT SIZE VENT LENGTH
MATERIAL (INCHES) (FEET)
STAINLESS
STEEL AL 29-4C
1300 STAINLESS
1500 STEEL AL 29-4C
1850 STAINLESS
2100 STEEL AL 29-4C
STAINLESS
STEEL AL 29-4C
III
III
III
III
I000
2500
10”(25.4 cm)
12" (30.5 cm)
14"(35.6 cm)
16" (40.6 cm)
70' (21.3 m)
70' (21.3 m)
40' (21.3 m)
40' (21.3 m)