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SpecialConditionsCreatedbyMechanicalExhaustingor
Fireplaces:operationofexhaustfans,ventilationsystems,
clothesdryersorfireplacesmaycreateconditionsrequiring
specialattentiontoavoidunsatisfactoryoperationofinstalled
gasutilizationequipment.
Water Piping
Water temperature over 125°F
(52°C) can cause severe burns
instantly resulting in severe injury
or death.
Children, elderly, and the
physically or mentally disabled
are at highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting valves are
available.
Read instruction manual for safe
temperature setting
HOTTER WATER CAN SCALD:
Water heaters are intended to produce hot water. Water heated
to a temperature which will satisfy space heating, clothes
washing, dish washing, cleaning and other sanitizing needs
can scald and permanently injure you upon contact. Some
people are more likely to be permanently injured by hot water
than others. These include the elderly, children, the infirm, or
physically/mentally handicapped. If anyone using hot water in
your home fits into one of these groups or if there is a local
code or state law requiring a certain temperature water at the
hot water tap, then you must take special precautions. In
addition to using the lowest possible temperature setting that
satisfies your hot water needs, a means such as a *mixing
valve, shall be used at the hot water taps used by these people
or at the water heater. Mixing valves are available at plumbing
supply or hardware stores, see Figure 14 below. Valves for
reducing point of use temperatu re by mixing cold and hot water
are also available. Follow manufacturer's instructions for
installation of the valves. Before changing the factory setting
on the thermostat, read the Temperature Regulation section in
this manual.
SOT WATER
OUTLET
=
*MIXIN
VALVE
COLD WATER
Jo. ,oc% ,,ER
WATER HEATER
HOT WATER
OUTLET ON
WATER HEATER
F_URE14.
Toxic Chemical Hazard
• Do notconnect to non-potablewater system.
This water heater shall not be connected to any heating systems
or component(s) used with a non-potable water heating
appliance.
All piping components connected to this unit for space heating
applications shall be suitable for use with potable water.
Toxic chemicals, such as those used for boiler treatment shall
not be introduced into this system.
Water supply systems may, because of such events as high
line pressure, frequent cut-offs or the effects of water hammer
among others, have installed devices such as pressure
reducing valves, check valves, back flow preventers, etc. to
control these types of problems. When these devices are not
equipped with an internal by-pass, and no other measures are
taken, the devices cause the water system to be closed. As
water is heated, it expands (thermal expansion) and closed
systems do not allow for the expansion of heated water.
The water within the water heater tank expands as it is heated
and increases the pressure of the water system. If the relieving
point of the water heater's temperature-pressure relief valve is
reached, the valve will relieve the excess pressure. The
temperature-pressure relief valve is not intended for the
constant relief of thermal expansion. This is an unacceptable
condition and must be corrected. It is recommended that any
devices installed which could create a closed system have a
by-pass and/or the system have an expansion tank to relieve
the pressure built by thermal expansion in the water system.
Refer to the Thermal Expansion section under Troubleshooting
Guide or contact local plumbing authority or local Sears Service
Center on how to control this situation.
NOTE: To protect against untimely corrosion of hot and cold
water fittings, it is strongly recommended that di-electric
unions or couplings be installed on this water heater when
connected to copper pipe.
Property Damage Hazard
• Avoid water heater damage.
• Install thermal expansion tank if necessary.
• Do not apply heat to cold water inlet.
• Contact qualified installer or Sears Service Center.
12
Figure 15 shows the typical attachment of the water piping to
the water heater. The water heater is equipped with 3/4" NPT
water connections.
NOTE: If using copper tubing, solder tubing to an adapter
before attaching the adapter to the cold water inlet
connection. Do not solder the cold water supply line directly
to the cold water inlet. It will harm the dip tube and damage
the tank.
• Look at the top cover of the water heater. The water outlet is
marked "HOT". Put two or three turns of teflon tape around
the threaded end of the threaded-to-sweat coupling and
around both ends of the 3/4" NPT threaded nipple. Using
flexible connectors, connect the hot water pipe to the hot
water outlet on the water heater.