Use & Care Manual
18
Installing the Water Heater
Direct Vent Terminal Clearances
D
V
V
E
FIXED
CLOSED
O
P
ERAB
LE
O
PERABLE
FIXED
CLOSED
v
v
B
L
F
C
B
v
v
v
X
B
B
B
A
J
B
I
H
X
v
M
K
v
G
A
Canadian Installations
1
A = Clearance above grade, veranda, porch, deck
or balcony
1ft. (30 cm)
B = Clearance to window or door that may be
opened
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
C = Clearance to permanently closed window 1 ft. (30 cm)
D = Vertical clearance to ventilated soft located
above the terminal
2 ft. (61 cm)
E - Clearance to unventilated soft 1 ft. (30 cm)
F - Clearance to outside corner 1 ft. (30 cm)
G - Clearance to inside corner 2 ft. (61 cm)
H - Clearance to each side of center line extended
above meter/regulator assembly
3 ft. (91 cm) within a height 15 ft. (4.5 m) above the meter/
regulator assembly
I - Clearance to service regulator vent outlet 3 ft. (91 cm)
J - Clearance to non mechanical air supply inlet
to building or the combustion air inlet to any
other appliance
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
K - Clearance to a mechanical air supply inlet 6 ft. (1.83 m)
L - Clearance above paved sidewalk or paved
driveway located on public property
7 ft. (2.13 m )*
M - Clearance under veranda, porch, deck, or
balcony
1ft. (30 cm )**
1
In accordance with the CSA B149.1, Natural Gas and Propane Installation Code
* A vent shall not be terminated 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.
For clearances not specied in CSA B149.1, the following statement shall be included: "Clearance in accordance with local installa-
tion codes and the requirements of the gas supplier and the manufacturer's installation instructions."
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted