Leakage Checkpoints - A.O. Smith DEL Installation And Operaion Manual

LEAKAGE CHECKPOINTS

Instructions: Use this illustration as a guide when checking for sources of water leakage. You or your dealer may be able to correct what
appears to be a problem. NOTE: Cover and Insulation shown removed to reveal tank top
Where possible remove or lift top cover to
examine threads of fittings installed into tank
for evidence of leakage. Correct fitting leaks
as necessary.
Water leaks at the elements may be due to:
1. Defective element which leaks at terminals
or thru flange. Replace element*.
2. Loose element/gasket leak:
(a) Screw-in type:
1-1/2" socket wrench or Part Number 23985
wrench. If leak continues, remove
element*, discard gasket and clean thread
areas.Apply nonhardeningPermatex
Number 2 to thread areas, install new
gasket and screw element into fitting until
it seats. Tighten 1/2 to 3/4 turn with wrench.
(b) Flange type: tighten screw with wrench.
If leak continues remove element* and
discard gasket. Clean gasket seating
areas and re-install element with new
gasket. NOTE: Part Number 40000-1 scale
cleaning replacement screws available
where threads have become rusted or
damaged, preventing tightening.
All water which appears at the heater bottom
or on the surrounding floor may be caused by
condensation, loose connections or relief
valve operation and leakage. Do not replace
the heater until full inspection of all potential
leak points is made and corrective steps taken
to stop the leak. Leakage from other
appliances, water lines or ground seepage
should also be suspected until proven
otherwise.
Anode Rod (Some Models)
tighten with
Relief Valve
10
To Open Drain
Condensation and dripping may appear on
pipes when cold water temperature is low.
Pipe fitting may be leaking.
Relief valve operation and leakage may be
due to water expansion during heating cycle
or foreign material on seat of valve. If the
valve is not piped to an open drain the
released water could be mistaken for a
leaking heater. To check where threaded
material between jacket opening and swab
spud area, remove valve* if indicated and
repair with pipe joint compound.
To Open Drain
Water on the side of the tank may be
condensation due to the panel or insulation
not being in place.
Drain valve leakage could be from the valve
itself.* To check for leakage where threaded
portion enters tank, insert Q-tip or similar
absorbent material between jacket opening
and valve to swab spud area. Remove
valve* if leak is indicated and repair with
pipe joint compound.
*Contact your dealer as it is necessary to shut off
electricity and drain tank to perform procedure.