American Water Heater DIRECT VENT GAS WATER HEATER, Installation And Operating Instruction Manual

Page: 11 / 40

11
VENTING
This is a Direct Vent Gas Water Heater where all air for combustion is
obtained from the outside atmosphere and all flue gases are discharged to
the outside atmosphere.
WARNING
The vent-air intake system must be properly installed. Failure to
properly install the vent-air intake system properly could result in
property damage, personal injury or death.
DO NOT install any damaged vent-air intake system components.
Contact the manufacturer of the water heater for replacement parts.
Figure 4
Direct Vent Terminal Clearances
Canadian
Installations
1
US Installations
2
A= Clearance above grade, veranda,
porch, deck or balcony 12 inches (30
cm)
12 inches
(30 cm)
B= Clearance to widow or door that may
be opened 12 inches (30
cm)
9 inches (23 cm)
C= Clearance to permanently closed
widow *b *b
D= Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal 12 inches (30
cm) *a
12 inches (30
cm) *a
E= Clearance to unventilated soffit 12 inches (30
cm) *a
12 inches (30
cm) *a
F= Clearance to outside corner *b *b
G= Clearance to inside corner *b *b
H= Clearance to each side of center line
extended above meter/regulator
assembly 3 feet (91 cm)
within a height
15 feet (4.6 m)
above the
meter/regulator
assembly
*b