John Wood Direct Vent - Manuel (Page 37)

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LEAKAGE CHECKPOINTS
SERVICE
If a condition persists or you are uncertain about the
operation of the water heater contact a service agency.
Use this guide to check a “Leaking” water heater (see
Figure 43). Many suspected “Leakers” are not leaking
tanks. Often the source of the water can be found and
corrected.
If you are not thoroughly familiar with gas codes, your
water heater, and safety practices, contact your gas
supplier or qualifi ed installer to check the water heater.
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.
D. Water at the vent assembly is water vapour which has
condensed out of the combustion products. This is
caused by a problem in the vent. Contact the gas utility.
E. *Condensation may be seen on pipes in humid weather
or pipe connections may be leaking.
F. *The anode rod fi tting may be leaking (anode is located
under the plastic plug and insulation).
G. Small amounts of water from temperature-pressure
relief valve may be due to thermal expansion or high
water pressure in your area.
H. *The temperature-pressure relief valve may be leaking
at the tank fi tting.
I. Water from a drain valve may be due to the valve being
slightly opened.
J. *The drain valve may be leaking at the tank fi tting.
K. Combustion products contain water vapour 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.
L. 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.
M. The combo heating system connections may be
leaking.
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 the draining instructions in this manual,
and then remove fi tting. Put pipe dope or Tefl on
® tape
on the threads and replace. To refi ll the water heater
follow the instructions in “Draining, Refilling And
Flushing”.
F
G
I
H
D
E
A
B
B
C
J
Figure 43