Bradford White UCG100H199 Installation & Operation Manual page 16

Figure 3 – Intake Vent Terminal Clearances (Referencing Other Appliance Venting Locations)
Clearance above
A= grade, veranda, porch,
deck or balcony
Clearance to window
B= or door that may be
opened
Clearance to
C= permanently closed
window
Vertical clearance to
ventilated soffit
located above the
terminal within a
D=
horizontal distance of
2 feet (61 cm) from the
center line of the
terminal
Clearance to
E=
unventilated soffit
Clearance to outside
F=
corner
Clearance to inside
G=
corner
In accordance with the current CAN/CGA-B149 Installation Codes.
2
In accordance with the current ANSI Z223.1-(Latest Edition)/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 a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
*a) A minimum clearance value determined by testing in accordance with section 2.20.
*b) "Clearance in accordance with local installation codes and the requirements of the gas supplier".
Vent pipes serving power vented appliances are classified by building codes as "vent connectors." Required
clearances from combustible materials must be provided in accordance with information in this manual under
Locating the Water Heater and Clearances, and with National Fuel Gas Code and local codes.
Canadian US
Installations 1 Installations
12 inches 12 inches
(30 cm) (30 cm)
6 in (15cm) for
appliances ≤10,000
4 feet (1.2 m)
Btuh (3kW); 12 in (30 below or to
cm) for appliances the side of
>10,000 Btuh (3kW) opening; 12
and ≤100,000 Btuh
inches (30
(30kW); 36 in (91 cm) cm) above
for appliances opening
>100,000 Btuh (30 kW)
*b *b
*b *b
*b *b
*b *b
36 inches 36 inches
(91 cm) *a (91 cm) *a
2
Clearance to each side of
H= center line extended above
meter/regulator assembly
Clearance to service
I= regulator vent outlet or oil
tank vent
Clearance to non-
mechanical air supply inlet
J= to building or the
combustion air inlet to any
other appliance
Clearance to a mechanical
K=
air supply inlet
Clearance above paved
L= sidewalk or paved driveway
located on public property
Clearance under a veranda,
M=
porch, deck, or balcony
16
Canadian
Installations 1 Installations
3 feet (91 cm) within a
height 15 feet (4.6 m)
above the
meter/regulator
assembly
36 inches
(91 cm)
6 in (15cm) for
appliances ≤10,000
4 feet (1.2 m)
Btuh (3kW); 12 in (30
below or to side
cm) for appliances
of opening;
>10,000 Btuh (3kW) and
12 inches (30
≤100,000 Btuh (30kW);
cm) above
36 in (91 cm) for
opening.
appliances >100,000
Btuh (30 kW)
3 feet (91 cm)
6 feet
above if within 10
(1.83 m)
feet horizontally
7 feet 7 feet
(2.13 m) † (2.13 m) †
12 inches
(30 cm) ‡
US
2
*b
*b
*b