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25
Operational Conditions (Continued)
Leakage Checkpoints
FIGURE 27.
Read this manual fi rst. Then before checking the water heater
make sure the gas supply has been turned “OFF”, and never turn
the gas “ON” before the tank is completely full of water.
Never use this water heater unless it is completely fi lled with
water. To prevent damage to the tank, the tank must be fi lled
with water. Water must fl ow from the hot water faucet before
turning “ON” gas to the water heater. See Figure 27.
A. Water at the draft hood is water vapor which has condensed
out of the combustion products. This is caused by a problem
in the vent. Contact the gas utility.
B. *Condensation may be seen on pipes in humid weather or
pipe connections may be leaking.
C. *The anode rod fi tting may be leaking.
D. Small amounts of water from temperature-pressure relief valve
may be due to thermal expansion or high water pressure in
your area.
E. *The temperature-pressure relief valve may be leaking at the
tank fi tting.
F. Water from a drain valve may be due to the valve being slightly
opened.
G. *The drain valve may be leaking at the tank fi tting.
H. Combustion products contain water vapor which can
condense on the cooler surfaces of the tank. Droplets form
and drip onto the burner or run on the fl oor. This is common
at the time of start-up after installation and when incoming
water is cold.
I. Water in the water heater bottom or on the fl oor may be
from condensation, loose connections, or the relief valve.
DO NOT replace the water heater until a full inspection of all
possible water sources is made and necessary corrective
steps taken.
Leakage from other appliances, water lines, or ground seepage
should also be checked.
* To check where threaded portion enters tank, insert cotton
swab between jacket opening and fi tting. If cotton is wet,
follow “Draining” instructions in the Periodic Maintenance
section and then remove fi tting. Put pipe dope or tefl on tape on
the threads and replace. Then follow Filling the Water Heater
instructions in the Installing the New Water Heater section.