Direct Vent Diagram - American Water Heater 300 Series Instruction Manual

DIRECT VENT DIAGRAM

DIRECT VENT INSTALLATIONS
Direct Vent combustion air intake drains are required in certain situations. See the section on Direct Vent Air Intake Moisture Protection on
page 28 and the Figures 21 and 22 below.
EXHAUST
Figure 21
Figure 23
18" 450 mm
OR ABOVE ANTICIPATED
SNOW LEVEL
*
*
24" MINIMUM SEPARATION.
EXHAUST MUST BE AT SAME
LEVEL OR ABOVE INTAKE
TERMINAL.
*
ABOVE ANTICIPATED
SNOW LEVEL, OR
12" (300 mm) ABOVE GRADE.
SNORKELING IS ALLOWED TO
ACHIEVE PROPER CLEARANCE.
*
THE SNORKEL MUST BE
SECURELY SUPPORTED.
*
Direct Vent combustion air intake drains are required in certain situations.
See the section on Direct Vent Air Intake Moisture Protection on page 27.
*
Figure 22
*
*
Figure 24
32
18" 450 mm
OR ABOVE ANTICIPATED
SNOW LEVEL
*
ABOVE ANTICIPATED
SNOW LEVEL, OR
12" (300 mm) ABOVE GRADE.