Rheem 22V40F1 Use And Care Manual Download Page 19

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Care and cleaning of the water heater.

Draining the Water Heater

CAUTION: Shut off gas to the water

heater at the 

gas control

(thermostat) gas

cock or manual shut-off valve before
draining water.

DANGER: Before manually operating the

temperature and pressure relief valve, make
certain no one will be exposed to the hot
water released by the valve. The water
drained from the tank may be hot enough to
present a scald hazard and should be
directed to a suitable drain to prevent injury
or damage.

In order to drain the water heater, turn off
the cold water supply. Open a hot water
faucet or lift the handle on the relief valve
to admit air to the tank. 

Attach a garden hose to the drain 
valve on the water heater and direct 
the stream of water to a drain. Open 
the valve.

!

!

Routine Preventative Maintenance

Properly maintained, your water heater
will provide years of dependable trouble-
free service. 

It is recommended that a periodic
inspection of the gas control (thermostat),
burner, relief valve, internal flue-way and
venting system should be made by service
personnel qualified in gas appliance repair.

It is suggested that a routine preventative
maintenance program be established and
followed by the user.

At least once a year, lift and release the
lever handle on the temperature pressure
relief valve, located near the top of the
water heater, to make certain the valve
operates freely. Allow several gallons to
flush through the discharge line to an open
drain.

NOTICE: If the temperature and
pressure relief valve on the hot water
heater discharges periodically, this may
be due to thermal expansion in a closed
water system. Contact the water
supplier or your plumbing contractor on
how to correct this. DO NOT plug the
relief valve outlet.

A water heater’s tank can act as a settling
basin for solids suspended in the water. It
is therefore not uncommon for hard water
deposits to accumulate in the bottom of the
tank.  If allowed to accumulate, these
solids can cover the gas control

(thermostat) sensors, causing the sensors to
operate erratically.  Because accumulated
solids can prevent the gas control
(thermostat) sensors from accurately
reading the water temperature, the water 
at the fixture can be hotter than the gas
control (thermostat) dial setting.  It is
suggested that a few quarts of water be
drained from the water heater’s tank every
month to clean the tank of these deposits. 

Rapid closing of faucets or solenoid valves
in automatic water using appliances can
cause a banging noise heard in a water
pipe. Strategically located risers in the
water pipe system or water hammer
arresting devices can be used to minimize
the problem.

The anode rod should be removed from the
water heater’s tank annually for inspection
and replaced when more than 6” of core
wire is exposed at either end of the rod.

Make sure the cold water supply is turned

off before removing anode rod.

This water heater incorporates a
combustion shut off device that shuts the
operation of the water heater down if
undesirable combustion conditions occur.
Such as the presence of flammable vapors
or blockage of the combustion air inlet
openings.  Please contact a Qualified
Service Technician if this occurs.

Housekeeping

Visually inspect pilot burner and 
relight if necessary.

To ensure sufficient ventilation and
combustion air supply, proper clearances
must be maintained. 

When installed in a closet, 

DO NOT

block or obstruct any of the combustion air
inlet openings located around the perimeter
of the water heater.   A minimum of 1” is
required between these combustion air inlet
openings and any obstruction.

DANGER: Before

manually operating the
relief valve, make certain
no one will be exposed to
the danger of the hot water
released by the valve. The
water may be hot enough to
create a scald hazard. The
water should be released
into a suitable drain to
prevent injury or property
damage.

DANGER: Combustible

materials, such as clothing,
cleaning materials, or
flammable liquids, etc., must
not be placed against or next
to the water heater.

!

DANGER:  Failure to

perform the recommended
Routine Preventative
Maintenance can harm the
proper operation of this
water heater, which can
cause carbon monoxide
dangers, excessive
hot water temperatures and
other potentially hazardous
conditions.

DANGER: Hotter water

increases the potential for
Hot Water Scalds.

!

Summary of Contents for 22V40F1

Page 1: ...r the proper installation and adjustment of the water heater and two for the owner operator to explain the features operation safety precautions maintenance and troubleshooting of the water heater Thi...

Page 2: ...model and serial numbers here You can find them on a label on the appliance Staple sales slip or cancelled check here Proof of the original purchase date is needed to obtain service under the warranty...

Page 3: ...nt system for proper installation at initial start up and at least annually thereafter Refer to the Care and Cleaning section of this manual for more information regarding vent system inspection DANGE...

Page 4: ...r temperature for each mark on the Gas Control Thermostat Temperature Dial DANGER Hotter water increases the potential for Hot Water SCALDS D A N G E R HOT Water temperature over 125 F can cause sever...

Page 5: ...LP gas must be used with great caution It is heavier than air and will collect first in lower areas making it hard to detect at nose level Before attempting to light the water heater make sure to look...

Page 6: ...RMATION READ ALL INSTRUCTIONS BEFORE USING WARNING For your safety the information in this manual must be followed to minimize the risk of fire or explosion electric shock or to prevent property damag...

Page 7: ...nd create a shut down condition of the water heater which will not allow the water heater to ignite until examined by a Qualified Service Technician The water heater must be located so it is not subje...

Page 8: ...located as specified above and each must have a minimum net free area of not less than one square inch per 4000 Btuh of the total input rating of all the appliances in the enclosure If horizontal duc...

Page 9: ...relieving the over pressure condition and eliminating the repeated operation of the relief valve Other methods of controlling thermal expansion are also available Contact your installing contractor wa...

Page 10: ...e end of the discharge line should not be threaded or concealed and should be protected from freezing No valve of any type restriction or reducer coupling should be installed in the discharge line To...

Page 11: ...r LP gas Gas Supply The branch gas supply line to the water heater should be clean 1 2 black steel pipe or other approved gas piping material A ground joint union or ANSI design certified semi rigid o...

Page 12: ...nergy 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 un...

Page 13: ...ter heater jacket DON T remove the Burner Access Door unless absolutely necessary This should only be done by a qualified service technician A new burner access door gasket must be installed on any bu...

Page 14: ...tion air inlet openings observed see page 7 Water heater completely filled with water Air purged from water heater and piping Water connections tight and free of leaks Gas line equipped with shut off...

Page 15: ...xisting heating unit or components of a heating system that have previously been used with a non drinking water system Toxic chemicals such as those used for boiler treatment may be present and will c...

Page 16: ...and all other labels on the water heater as well as the warnings printed in this manual Failure to do so can result in unsafe operation of the water heater resulting in property damage personal injur...

Page 17: ...more details The chart below may be used as a guide in determining the proper water temperature for your home Safety Precautions Do turn off manual gas shut off valve if water heater has been subject...

Page 18: ...r that hotter water increases the risk of scald injury Also always supervise young children or others who are incapacitated The gas control thermostat is constructed with a built in safety shut off de...

Page 19: ...ated solids can prevent the gas control thermostat sensors from accurately reading the water temperature the water at the fixture can be hotter than the gas control thermostat dial setting It is sugge...

Page 20: ...r cleaning remove the burner from the water heater A vacuum cleaner can be used on the burner and floor shield inside the water heater The burner can also be cleaned by scrubbing with mild detergent P...

Page 21: ...vice technician Pilot burner tube pinched or The pilot burner should be cleaned repaired or clogged replaced by a qualified service technician Gas Cock Knob not See the Lighting The Water Heater secti...

Page 22: ...hting The Water Heater section of this manual The gas control thermostat See the Water Temperature Setting of The Water may be set too low Heater section of this manual Leaking or open hot Make sure a...

Page 23: ...s vent connectors or other safety devices Refer repairs to qualified service personnel Draft hood Temperature and pressure relief valve Burner supply tube Flue baffle and hanger Anode rod Heat Trap He...

Page 24: ...Drive East Montgomery Alabama 36109 1413 Phone 1 800 432 8373 When contacting the manufacturer the following information will be requested a Model and serial number of the water heater as shown on the...

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