American Water Heater VG6250T76NV Series 100 Water Heater User Manual


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19
TERMINATION CLEARANCES SIDEWALL POWER VENT
V X
VENT TERMINAL AIR SUPPLY INLETAREA WHERE TERMINAL IS NOT PERMITTED
v
v
A
G
V
FIXED
CLOSED
FIXED
CLOSED
OPERABLE
OPERABLE
V
C
B
B
B
B
F
B
V
V
A
J
V
H
M
X
X
V
V
K
B
E
D
L
POWER VENT
(using room air for combustion)
EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION
FIGURE 15.
Vent terminal clearances for “Power Vent” installations. Power Vent congurations use room air for combustion.
US INSTALLATIONS US INSTALLATIONS
A
Clearance above grade, veranda, porch,
deck or balcony
12inches(30cm)
H
Clearance to each side of center line
extended above meter/regulator assembly
3feet(91cm)withinaheight15feet(4.5m)
above the meter/regulator assembly*
B
Clearance to window or door that may
be opened
4feet(1.2m)belowortosideofopening;1
foot(30cm)aboveopening
I
Clearance to service regulator vent outlet
3feet(91cm)*
C
Clearance to permanently closed window 12inches(30cm)*
J
Clearance to a non mechanical air supply
inlet into building or combustion air inlet to
any other appliance
4feet(1.2m)belowortosideofopening;
1 foot
(30cm)aboveopening.
D
Verticalclearancetoventilatedsoft
located above the terminal within a
horizontaldistanceof2feet(61cm)from
the center line of the terminal
12inches(30cm)*
K
Clearance to a mechanical air supply inlet
3feet(91cm)aboveifwithin
10feet(3m)horizontally
E
Clearancetounventilatedsoft 12inches(30cm)*
L
Clearance above paved sidewalk or paved
driveway located on public property
7feet(2.13m)
†
F
Clearance to outside corner 2feet(60cm)*
M
Clearance under veranda, porch, deck, or
balcony
12inches(30cm)‡
G
Clearance to inside corner 18inches(45cm)*
In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
‡Permittedonlyifveranda,porch,deck,orbalconyisfullyopenonaminimumoftwosidesbeneaththeoor.
*Clearanceinaccordancewithlocalinstallationcodesandtherequirementsofthegassupplierandthemanufacturer’sinstallationinstructions.
VENT PIPE TERMINATION
The first step is to determine where the vent pipe will terminate.
See Figures 15, 20 and 21. The vent may terminate through a
sidewall as shown in Figure 20 or through the roof as shown
in Figure 21.
The vent system must terminate so that proper clearances are
maintained as cited in local codes or the current edition of the
NationalFuelGasCode,(ANSIZ223.1,12.9.1through12.9.4).
Instructions on proper installation through a sidewall are provided
in Figure 15.
Plan the vent system layout so that proper clearances are
maintained from plumbing and wiring.
Ventpipesservingpowerventedappliancesareclassiedby
buildingcodesas“ventconnectors”.Requiredclearancesfrom
combustible materials must be provided in accordance with
information in this manual under LOCATING THE NEW WATER
HEATER and INSTALLING THE WATER HEATER, and with the
National Fuel Gas Code and local codes.
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