A.O. Smith G6-PVT4050NV Installation Instructions And Use & Care Manual page 12

GETTING STARTED
High Vent Installation
1 5
17"
Min.
6
1
72"
Max.
Figure 18 - High Venting Termination
NOTES: (applies to Figure 16 through
Figure 18)
1. In any installation the total of
dimension "A" plus dimension "B"
must not exceed 89".
2. This heater can be installed with
0" clearance to a wall.
3. Minimum vent pipe clearance to
combustibles is 1" (see Figure 9).
4. Minimum distance from center of
heater to wall is 14.25".
5. Dimension "A" includes wall
thickness.
6. Hole diameter in wall is 7".
7. Venting must slope up away from
the heater a minimum of 0.25"
per foot of length to prevent
condensation from collecting and
to provide sufficient draft.
8. Distance above horizontal at full
extension is 2".
9. Use support stays to hold the
venting to avoid sags or valleys.
12 • Residential Gas Water Heater Use and Care Guide
Replacing a Water
Heater Using the
Existing Vent System
Read the "Installing a New Vent
System" section of this manual
and make sure your vent system
12" Min.
Below
is properly installed. Inspect the
Soffit
existing vent system for obstructions,
corrosion, and proper installation.
Repair or replace if necessary. The
existing vent system must be UL listed
and installed according to the vent
manufacturer's instructions and the
terms of its listing. Do not use other
2
materials such as dryer vent hose.
See Application A and B to determine
if your new water heater can be
retrofitted to an existing vent
termination hood:
Vent Termination Hood
(Application A)
11-13/16"
Figure 19 - American Vent Termination Hood (A)
A current American DV water heater
vent termination includes 3 inch inner
piping to carry out the exhaust flue
gases and 5 inch outer piping to carry
in fresh combustion air.
If replacing a current American DV
water heater, a duct reducer and
union adapter must be installed to
connect the existing vent termination
hood to new inner and outer piping.
Use kit number 100366535.
IMPORTANT: A weather shroud
is provided in this kit and must
be installed over the existing vent
termination hood to ensure adequate
protection from wind and other
weather related hazards. Failure to do
so may result in pilot outages at the
water heater.
Vent Termination Hood
(Application B)
8-1/2"
Figure 20 - Bradford White Vent Termination
Hood (B)
A Bradford White® DV water heater
vent termination includes 3 inch inner
piping to carry out the exhaust flue
gases and 5 inch outer piping to carry
in fresh combustion air.
If replacing a Bradford White DV
water heater, a duct reducer and
union adapter must be installed to
connect the existing vent termination
7"
hood to new inner and outer piping.
Use kit number 100366536.
If you are not sure the existing vent
termination hood is compatible
with your new water heater, call our
Technical Assistance Hotline which is
listed on the water heater's warranty
sheet.
8"