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WATER PIPING
Water
temperature
over
125°F
(52°C)
can
cause
severe
burns
instantly resulting in severe iniury or
death.
Children,
the
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, see Figure 15. Valves for reducing point
of use temperature
by mixing cold and hot water are also available:
HOT WATER
OUTLET
*MIXIN_
VALVE
÷
FROM
HOT WATER
OUTLET
ON
WATER
HEATER
COLD WATER
WATERHEATER
Toxic chemicals,
such as those used for boiler treatment
shall not be
introduced
into this system.
When the system requires water at temperatures
higher than required
for domestic water purposes, a tempering valve must be installed. Please
refer to Figure 15 for suggested
piping arrangement.
Water supply
systems
may, because
of such events
as high line
pressure, frequent cut-offs, 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.
Thermal expansion
tanks are available from Sears stores and through
the Sears Service Centers. Contact the local plumbing inspector, water
supplier
and/or the Sears Service Center for assistance
in controlling
these situations.
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.
FIGURE 15.
Consult Sears Service Center.
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.
Toxic
Chemical
Hazard
- Do not connect
to non=potable
,dater system.
This water heater shall not be connected
to any heating system
or
component
or used as a nompotable
water heating appliance.
All piping components
connected
to this unit shall be suitable for use
with potable water.
Figure !6 shows the typical attachment
of the water piping to the water
heater.
The water
heater
is equipped
with
3/4 inch NPT water
connections.
NOTE: ff 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.
Look at the top of the water heater. The cold water inlet is marked
"COLD".
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 cold
water pipe to the cold water inlet of the water heater.
12
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