Dilution Air Inlet
Tall Models
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
Heat Traps
For increased energy efficiency, some
water heaters have been supplied with
factory installed 3/4" NPT heat traps in
the hot outlet line and cold water inlet
line.
During Installation of this water heater...........
DO
❑
check inlet gas pressure to ensure
DO
that it is within the range specified on the
rating plate.
❑
provide adequate air for combustion
DO
and ventilation as discussed in the Use and
Care Manual and the National Fuel Gas
Code.
❑
maintain proper clearances to
DO
combustibles as specified on the rating
plate.
❑
allow enough time for joint cement
DO
vapors to dissipate BEFORE applying power
to the water heater.
❑
ensure that the venting system
DO
complies with the guidelines found in the
Use and Care Manual and National Fuel Gas
Code.
❑
contact a qualified service technician
DO
if the pilot or main burner will not stay lit.
The burner chamber is designed to be sealed
utilizing a gasket and tamper resistant
screws.
Burner Access
Door Grommet
Flammable
Vapor Sensor
These heat traps may require a minimum
of one (1) 90
3/4" NPT elbow and may
°
require an additional 90° 3/4" NPT elbow
or a 3/4" coupling depending on your
installation needs. See Illustration of
nipples and heat traps on page 33.
DON'T
❑
block or restrict Combustion
DON'T
Air Inlet Openings or the Flammable Vapor
Sensor located around the lower portion of
the water heater jacket.
❑
block or restrict the Blower
DON'T
Assembly Dilution Air holes.
❑
remove the Burner Access Door
DON'T
unless absolutely necessary. This should
only be done by a qualified service technician.
A new burner access door gasket must be
installed on any burner access door that
has been removed.
❑
install this water heater where
DON'T
standing water may occur. The base of the
water heater is meant to be mounted on a
dry surface.
❑
operate the water heater if the
DON'T
sight glass or burner access door grommet
is damaged or broken.
Sight Glass
19