Page 223 - 12558 Drexler Builder Binder.pdf
P. 223
TROUBLESHOOTING
Temperature Too High Drips from T&P Relief If the water pressure is between 50
If the water temperature is too hot: Valve Discharge Pipe and 60 psi, a Thermal Expansion Tank
is installed and properly pressurized,
Install or adjust the Thermostatic A small amount of water dripping from and the valve has been cleared of any
Mixing Valves for each point-of-use the Temperature and Pressure (T&P) debris, and it s ll drips, the valve may
(see manufacturers instructions), Relief Valve usually means the homes be brokenhave a qualied person
or water pressure is too high or you need replace the T&P relief valve.
a properly sized and pressurized Ther-
Adjust the thermostat(s) on the Water Odor
water heater (see Step 10 in the mal Expansion Tank. Refer to Step 1 in
installation section of this manual). the Installa on sec on of this manual Harmless bacteria normally present in
for more informa on. A large amount tap water can mul ply in water heat-
A nonfunc oning thermostat or a of hot water coming from the T&P ers and give o a ro en egg smell.
shorted hea ng element can cause ex- discharge pipe may be due to the tank Although elimina ng the bacteria that
tremely hot water. If the Temperature overhea ng. causes smelly water with a Chlorina-
and Pressure Relief Valve (T&P Valve) on system is the only sure treatment,
releases large amounts of very hot WARNING! Do not cap or plug the in some cases, the standard anode
water, it is likely due to a shorted heat- T&P relief valve or discharge pipe, rod that came with your water heater
ing element, or more rarely a nonfunc- and do not operate the water heater can be replaced with a special zinc
oning thermostat, or the thermostat without a func oning T&P Relief Valve anode rod which may help reduce or
does not t snuggly against the tank. - this could cause an explosion. eliminate the odor. Contact a qualied
Very high water temperatures can also Water pressure too high. High water person.
cause the Energy Cut O (ECO) to trip pressure can cause the T&P Relief
(see page 19). Turn power o un l Valve to drip. Install a Pressure Reduc- NOTE: To protect the tank, an anode
this problem is xed. ing Valve (PRV) on the main cold water rod must be installed in the water
heater at all mes or the warranty is
supply line. Adjust the PRV to between void.
Low Water Pressure 50 and 60 psi.
In cases where the ro en egg smell
Check both the cold and hot water at a Thermal Expansion Tank. Install a is pronounced, you can raise the tank
sink to determine if the lower pressure Thermal Expansion Tank. If a Thermal temperature to 140°F in order to re-
is only on the hot water side. If both hot Expansion Tank is already installed and duce bacteria growth in the tank.
and cold faucets have low pressure, call the T&P Relief Valve discharge pipe atures increase the risk of scalding, if
TROUBLESHOOTING primary causes of this are: sure or the internal bladder may be you set the thermostat(s) higher than
drips, the Thermal Expansion Tank may
WARNING! Because higher temper-
your local water u lity. If the low pres-
be pressurized to the wrong pres-
sure is only on the hot water side, the
120°F, Thermosta c Mixing Valves
defec ve. Refer to the instruc ons that
Melted heat traps or dip tube. Sol-
at each point-of-use are par cularly
came with the Thermal Expansion Tank
dering copper pipes while they are
for more informa on.
important (page 4).
connected to the water heater can
melt the heat traps inside the hot
Debris. In rare cases, debris can s ck
and cold water connections or the
inside the T&P Relief Valve preven ng
dip tube (cold water side). Melted
heat traps or a melted dip tube can
case, the T&P Relief Valve discharge
restrict the flow of hot water. If thats
the case, replace the heat traps or the valve from sea ng fully. In that
pipe will drip. You may be able to clear
dip tube. debris from the T&P Relief Valve by
manually opera ng the valve, allowing
Partially closed supply valve. Open small quan es of water to ush out
the water heaters supply valve
fully. the debris. See the label on the T&P
Relief Valve for instruc ons.
20 Residen al Electric Water Heater Use and Care Guide
