Instructions / Assembly

12
Installing the water heater
Venting
NOTICE: This water heater may be
installed in attics provided ambient
temperatures DO NOT exceed 125°F
(52°C) and CPVC or ABS pipe and
fittings are used for the entire vent
system.
The support method used should isolate
the vent pipes from floor joists or other
structural members to help prevent the
transmission of noise and vibration.
DO NOT support, pin or otherwise secure
the vent system in a way that restricts the
normal thermal expansion and contraction
of the chosen venting material.
If the water heater is being installed as a
replacement for an existing power vent,
water heater, a thorough inspection of the
existing vent system must be performed
prior to any installation work.
Verify that the correct materials as
specified in this manual have been used,
and that the minimum or maximum
vent lengths and terminal location as
detailed in this manual have been met.
Carefully inspect the entire vent system
for any signs of cracks or fractures,
particularly at the joints between
elbows or other fittings and the straight
length of vent pipe.
Ambient Installation Temperatures and Vent System Material Specications
Up to 100°F (38°C) 100°F (38°C) to 125°F (52°C)
0 to Max. ft.
Equivalent Vent
System Length
0 to Max. ft.
Equivalent Vent
System Length
0 to Max. ft.
Equivalent Vent
System Length
PVC, CPVC, or ABS CPVC, or ABS CPVC, or ABS
This water heater is a Category III
appliance.
For proper installation of the vent
system, follow the instructions as
detailed in this manual. DO NOT
connect this water heater to an existing
vent or chimney. Common venting
is NOT permitted. It must be vented
separately from all other ztappliances.
Multi-story venting is permitted in
accordance with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54.
NOTICE: This water heater is
approved to use the following
materials for pipe of the vent system:
PVC (DWV, ASTM-D2665 or
CSA B181.2)
PVC (Schedule 40, ASTM-D1785 or
CSA B137.3)
PVC (SDR Series, ASTM-D2241 or
CSA B137.3)
CPVC (CPVC 4120, ASTM-D2846 or
CSA B137.6)
CPVC (Schedule 40, ASTM-F441 or
CSA B137.3)
CPVC (SDR Series, ASTM-F442)
ABS (Schedule 40, DWV,
ASTM-D2661 or CSA B181.1)
This water heater is approved to use the
following materials for the fittings of
the vent system:
PVC (Schedule 40 DWV, ASTM
D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM
D2661)
DO NOT mix ABS pipe and fittings
with PVC or CPVC pipe fittings. Note:
It is acceptable to interchange PVC and
CPVC pipe and fittings.
Use of PVC cellular core
(ASTM-F891), ABS Schedule 40,
DWV cellular core (ASTM – F628), or
Radel® (polyphenolsulfone) in
non-metallic venting systems is
prohibited.
The vent system must be adequately
supported along both vertical and
horizontal lengths.
The vent system of this water heater
may be installed horizontally through a
wall or vertically through the roof.
Maximum unsupported length is
recommended to be no more than 4 feet
(1.22 m).
It is imperative that the first hanger
be located on the horizontal length
immediately adjacent to the first
90-degree elbow from the vertical rise
of vent pipe connected to the water
heater.
DANGER: Failure to
install the blower assembly
if shipped detached from
the water heater and
properly vent the water
heater to the outdoors as
outlined in the Venting
section of this manual will
result in unsafe operation of
the water heater causing
bodily injury, explosion,
fire or death.
To avoid the risk of fire,
explosion, or asphyxiation
from carbon monoxide,
NEVER operate the water
heater unless it is properly
vented and has adequate air
supply for proper operation
as outlined in the Venting
section of this manual.
The vent pipe must overlap
a minimum of ½ in. on each
connection. It is important
that the vent pipe engages
fully into any pipe fitting
and be kept in that position
until the adhesive has fully
cured. DO NOT drill or
punch holes in the plastic
pipe or fittings.
NOTICE: This unit is
equipped with a Flammable
Vapor Sensor. DO NOT
apply power until enough
time has passed to allow the
vapors from the primer and
cement to dissipate.