Rheem Professional Heavy Duty Series Use and Care Manual - Page 12

Insulation Blankets, Venting

Page 12 highlights

Installing the water heater. The water heater must be installed with the factory supplied draft hood in place. DANGER: Failure to install the draft hood 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. Venting Vent connectors must be attached to the draft hood outlet to connect the water heater to the gas vent or chimney. The vent connectors must be the same size (diameter) as the draft hood or larger, never smaller. For proper venting in certain installations a larger vent connector size may be needed. Consult the Vent Tables in Appendix G of the latest version of the National Fuel Gas Code (ANSI standard Z223.1 or NFPA 54.) Horizontal vent connectors must be pitched upward to the chimney at least 1/4" per foot of length. Single wall vent connectors must be at least 6" from adjacent unprotected combustible surface. Vent joints must be securely fastened by sheet metal screws or other approved method. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use a flame of a match or candle or smoke. The flame or smoke should be pulled into the draft hood's relief opening(s). WARNING: If local codes require external application of insulation blanket kits the manufacturer's instructions included with the kit must be carefully followed. Insulation Blankets Insulation blankets, available to the general public, for external use on gas water heaters are not necessary. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters. This water heater meets or exceeds the National Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary. The manufacturer's warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property. The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices. CAUTION: If local codes require the application of an external insulation blanket to this water heater, pay careful attention to the following so as not to restrict the proper function and operation of the water heater: ● Do not cover the operating or warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket. Do not apply insulation to the top of the water heater. This will interfere with the safe operation of the draft hood. Do not cover the burner access door, jacket door, gas control (thermost at)/gas valve or pressure and temperature relief valve. Do not apply insulation to the bottom of the water heater or the area where the combustion air inlet openings are located. This area must be unobstructed so as not to restrict combustion air flow to the burner. Inspect the insulation blanket frequently making certain it has not sagged and is restricting the air flow to the combustion air inlet openings (perforation holes) located around the lower perimeter of the water heater jacket. This could result in an unsafe operating condition. 12

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12
Installing the water heater.
The water heater must be installed with the factory supplied draft hood in place.
Insulation Blankets
Venting
Vent connectors must be attached to the
draft hood outlet to connect the water
heater to the gas vent or chimney. The
vent connectors must be the same size
(diameter) as the draft hood or larger,
never smaller.
For proper venting in certain installations
a larger vent connector size may be
needed. Consult the Vent Tables in
Appendix G of the latest version of the
National Fuel Gas Code (ANSI standard
Z223.1 or NFPA 54.)
Horizontal vent connectors must be
pitched upward to the chimney at least
1/4” per foot of length. Single wall vent
connectors must be at least 6” from
adjacent unprotected combustible surface.
Vent joints must be securely fastened
by sheet metal screws or other approved
method.
Test for spillage at the draft hood relief
opening after 5 minutes of main burner
operation.
Use a flame of a match or
candle or smoke.
The flame or smoke
should be pulled into the draft hood’s
relief opening(s).
Insulation blankets, available to the
general public, for external use on gas
water heaters are not necessary.
The
purpose of an insulation blanket is to
reduce the standby heat loss encountered
with storage tank heaters.
This water
heater meets or exceeds the
N
ational
Appliance Energy Conservation Act
standards with respect to insulation and
standby loss requirements making an
insulation blanket unnecessary.
The manufacturer’s warranty does not
cover any damage or defect caused by
installation, attachment or use of
any type of energy saving or other
unapproved devices (other than those
authorized by the manufacturer) into, onto
or in conjunction with the water heater.
The use of unauthorized energy saving
devices may shorten the life of the water
heater and may endanger life and property.
The manufacturer disclaims any
responsibility for such loss or injury
resulting from the use of such
unauthorized devices.
CAUTION: If local codes require the
application of an external insulation
blanket to this water heater, pay careful
attention to the following so as not to
restrict the proper function and
operation of the water heater:
Do not cover the operating or warning
labels attached to the water heater or
attempt to relocate them on the exterior
of insulation blanket.
z
Do not apply insulation to the top of the
water heater. This will interfere with the
safe operation of the draft hood.
z
Do not cover the burner access door,
jacket door, gas control (thermost at)/gas
valve or pressure and temperature relief
valve.
z
Do not apply insulation to the bottom
of the water heater or the area where
the combustion air inlet openings are
located. This area must be unobstructed
so as not to restrict combustion air flow
to the burner.
z
Inspect the insulation blanket frequently
making certain it has not sagged and is
restricting the air flow to the combustion
air inlet openings (perforation holes)
located around the lower perimeter of
the water heater jacket. This could result
in an unsafe operating condition.
DANGER: Failure to
install the draft hood 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.
WARNING: If local codes
require external application
of insulation blanket kits
the manufacturer’s
instructions included with
the kit must be carefully
followed.