Leakage Checkpoints - A.O. Smith 300 Series Instruction Manual

A: Inlet &
Outlet
K: Temperatrue
Probe
Connection
H: Cleanout
E: Drain
Valve
Figure 51. Leakage Checkpoints
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.

LEAKAGE CHECKPOINTS

LEAKAGE CHECKPOINTS
Never use this water heater unless it is completely filled with water.
B: Anode Rod
Connection
To prevent damage to the tank, the tank must be filled with water.
Water must flow from the hot water faucet before turning "ON" gas
to the water heater.
A
G: Recirculation B. *The anode rod fitting may be leaking.
Connection
C. Small amounts of water from temperature-pressure relief
D: T & P
D. *The temperature-pressure relief valve may be leaking at
Connection
E. Water from a drain valve may be due to the valve being
F. *The drain valve may be leaking at the tank fitting.
G. Leakage from recirculation plug or pipe connection.
G: Recirculation
Connection H. Leakage from the plug under the cleanout cover.
I.
J. Condensate from the exhaust connection.
K. *The temperature probe fitting may be leaking.
Leakage from other water heaters, water lines, or ground seepage
should also be checked.
J: Flue Outlet
*
F: Drain Valve
Connection
WATER LEAK PROTECTION
The water heaters covered by this manual are able to support a water
leak detection feature that senses the buildup of water in vicinity of
the appliance, setting off an alarm to alert the end user.
To use this feature requires the installation of a kit. Contact your
local distributor or call Technical Support for assistance.
Kit number 100302557
57
*Condensation may be seen on pipes in humid weather or
pipe connections may be leaking.
valve may be due to thermal expansion or high water
pressure in your area.
the tank fitting.
slightly opened.
Leakage from the temperature probe connection (Not shown
in figure).
To check where threaded portion enters tank, insert cotton
swab between jacket opening and fitting. If cotton is wet,
follow "Draining" instructions in the "Periodic Maintenance"
section and then remove fitting. Put pipe dope or teflon tape
on the threads and replace. Then follow the instructions in
Filling the Water Heater (page 50).