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Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
12
Installing the water heater.
Venting
NOTE: This unit can be vented using only the following
recommended pipe material. Use only 2- or 3-inch
diameter pipe.
PVC (Schedule 40, ASTM D-1785)
Coex Cellular Core PVC (Schedule 40, ASTM F-891)
CPVC (Schedule 40, ASTM F-441)
ABS (Schedule 40, ASTM D-2661)
The fittings, other than the TERMINA
TION, should be
equivalent to the following:
PVC (Schedule 40 DWV, ASTM D-2665)
CPVC (Schedule 40 DWV, ASTM F-438)
ABS (Schedule 40 DWV, ASTM D-2661)
The unit may be vented horizontally through a wall or
vertically through the roof. Pipe runs must be
adequately supported along both vertical and horizontal
runs. Maximum unsupported span is recommended to
be no more than 6 feet. It is imperative that the first
hanger be located on the horizontal run immediately
adjacent to the first 90-degree elbow from the vertical
rise or at the blower outlet in the case of a horizontal
blower position. Support method used should isolate
the vent pipe from floor joists or other structural
members to help prevent the transmission of noise and
vibration. Do not support, pin or otherwise secure the
venting 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 vented water heater, a thorough
inspection of the existing venting system must be
performed prior to any installation work. Verify that the
correct materials, as detailed above have been used, and
that the minimum or maximum vent length and terminal
locations as detailed in this manual have been met.
Carefully inspect the entire venting system for any signs
of cracks or fractures, particularly at the joints between
elbows or other fittings and the straight runs of vent
pipe. Check the system for signs of sagging or other
stresses in the joints as a result of misalignment of
any components in the system. If any of these
conditions are found, they must be corrected in
accordance with the venting instructions in this manual
before completing the installation and putting the water
heater into service.
Connect blower assembly with Molex connector. Attach Blower Assembly
to top pan using the four screws and retainer clips provided. Install
rubber coupling (supplied in the box with water heater) on blower housing
and secure it.
Blower Assembly Installation
Maximum and Minimum Vent Lengths
Sheet metal screw
Retainer
clips/
brackets
Blower
assembly
Sheet
metal
screws
Rubber
coupling
Sheet metal
screw
Molex
connector
WARNING: The water heater
must be vented to the outdoors as
described in these instructions. DO
NOT connect this water heater to an
existing Vent or Chimney—it must be
vented separately from all other
appliances.
WARNING: Failure to properly
vent the water heater to the outdoors
as outlined above and in the following
section can 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 this water heater
unless it is properly vented and has
an adequate air supply for proper
operation. The vent pipe must overlap
a minimum of 1/2″ 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.
Venting Information for 2″ Vents*
Number of 90° Elbows Number of Minimum Pipe Maximum
with Vent Terminal 45° Elbows Length Req. (ft) Length (ft)
One (1) None 3.00 32.00
One (1) One (1) 3.00 29.00
Two (2) None 3.00 26.00
Two (2) One (1) 3.00 23.00
Three (3) None 3.00 20.00
*For the 2″ vent, one 90-degree elbow is approximately equal to 6 feet of pipe. One 45-degree elbow is approximately equal to 3 feet of pipe.
NOTE: The mixing of 2″
and 3″ vent pipe is not
recommended.
If 3″ pipe is used, a 2″ to 3″
bell coupling is recommended
at the rubber coupling.
This heater is supplied with a
two-inch Schedule 40 PVC 45°
vent terminal. If you decide to
vent with 3″ pipe, a Schedule
40 DWV PVC 45° vent terminal
must be used. For your
convenience, we have
included a screen for both 2″
and 3″ vent terminals.
Venting Information for 3″ Vents**
Number of 90° Elbows Number of Minimum Pipe Maximum
with Vent Terminal 45° Elbows Length Req. (ft) Length (ft)
One (1) None 3.00 75.00
One (1) One (1) 3.00 72.50
Two (2) None 3.00 65.00
Two (2) One (1) 3.00 62.50
Three (3) None 3.00 60.00
Three (3) One (1) 3.00 57.50
Four (4) None 3.00 55.00
Four (4) One (1) 3.00 52.50
Five (5) None 3.00 50.00
**For the 3″ vent, one 90-degree elbow is approximately equal to 5 feet of pipe. One 45-degree elbow is approximately equal to 2.5 feet of pipe.
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