26
onsenproducts.com
onsenproducts.ca
800-996-5559
An 80 mm (3.15 in.) to 75 mm (3 in.) pipe reducer is included with this water heater to allow connection of
a 3 in. vent pipe.
Use the Universal Adapter pipe provided by the vent manufacturer to connect the vent pipe to the unit.
Follow the manufacturer vent pipe assembly guidelines and sample diagrams below.
Please use UL certified stainless steel vent pipe as per the standard UL 1738 and ULC S636-BH.
EXHAUST VENT PIPE ASSEMBLY
1
2
3
4
Inside
corner detail
Fixed
closed
Fixed
closed
Operable
Operable
= Vent terminal
= Air supply inlet
= Area where terminal is not permitted
V
X
LEGEND
Ref
Clearance Description
Canadian Installations (1)
US Installations (2)
A =
Clearance above grade, veranda, porch, deck, or balcony
12 in (30 cm)
12 in (30 cm)
B =
Clearance to window or door that may be opened
12 in (30 cm)
12 in (30 cm)
C =
Clearance to permanently closed window
*
*
D =
Vertical clearance to ventilated soffit located above the terminal within a
horizontal distance of 2 ft (61 cm) from the center line of the terminal
*
*
E =
Clearance to unventilated soffit
*
*
F =
Clearance to outside corner
*
*
G =
Clearance to inside corner
*
*
H =
Clearance to each side of the center line extended above meter/regulator
assembly
3 ft (91 cm) within a height of
15 ft (4.6 m)
*
I =
Clearance to service regulator vent outlet
3 ft (91 cm)
*
