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1. Turn “OFF” the gas supply to the
water heater.
If the main gas line shut-off valve
serving all gas appliances is
used, also shut “OFF” the gas at
each appliance. Leave all gas
appliances shut “OFF” until the
water heater installation is
completed, see Figures 3 and 4.
2. Turn “OFF” the water supply to the
water heater at the water shut off
valve or water meter. Some
installations require that the water
be turned off to the entire house,
see Figures 3 and 5.
REMOREMO
REMOREMO
REMO
VING THE OLD WVING THE OLD W
VING THE OLD WVING THE OLD W
VING THE OLD W
AA
AA
A
TER HEATER HEA
TER HEATER HEA
TER HEA
TERTER
TERTER
TER
FIGURE 3.
4. Attach a hose to the water heater
drain valve and put the other end in
a floor drain or outdoors. Open the
water heater drain valve. Open a
nearby hot water faucet which will
relieve pressure in the water
heater and speed draining. The
water passing out of the drain valve
may be extremely hot. To avoid
being scalded, make sure all
connections are tight and that the
water flow is directed away from
any person, see Figures 3 and 6.
FIGURE 4.
FIGURE 5.
3. Check again to make sure the gas supply is “OFF” to the
water heater. Then disconnect the gas supply connection
from the gas control valve.
FIGURE 6.
5. Disconnect the vent pipe from the draft hood where they
connect to the water heater. In most installations the vent
pipe can be lifted off after any screw or other attached devices
are removed. Dispose of the draft hood. The new water
heater has the draft hood which must be used for proper
operation.
6. If you have copper piping to the water heater, the two copper
water pipes can be cut with a hacksaw approximately four
inches away from where they connect to the water heater.
This will avoid cutting off pipes too short. Additional cuts can
be made later if necessary. Disconnect the temperature-
pressure relief valve drain line. When the water heater is
drained, disconnect the hose from the drain valve. Close the
drain valve. The water heater is now completely disconnected
and ready to be removed, see Figure 7.
FIGURE 7.
If you have galvanized pipe to the water heater, loosen the two
galvanized pipes with a pipe wrench at the union in each line.
Also disconnect the piping remaining to the water heater.
These pieces should be saved since they may be needed
when reconnecting the new water heater. Disconnect the
temperature-pressure relief valve drain line. When the water
heater is drained, disconnect the hose from the drain valve.
Close the drain valve. The water heater is now completely
disconnected and ready to be removed. Mineral buildup or
sediment may have accumulated in the old water heater. This
causes the water heater to be much heavier than normal and
this residue, if spilled out, could cause staining, see
Figure 8.
FIGURE 8.