Maytag HRX75XORSCGA - Manuel (Page 7)

7
PREPARATIONS FOR INSTALLATION
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 1 and 2.
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 1 and 3.
FIGURE 1.
Removing the Old Water Heater
FIGURE 2.
FIGURE 3.
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.
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 1 and 4.
FIGURE 4.
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 5.
FIGURE 5.
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 6.
FIGURE 6.