Next unthread the nuts or screws securing the burner plate itself.
Cleaning gas water heater.
Unthread the nut to detach the burner supply tube from the gas or control valve.
Turn off the hot water heater.
Remove the temperature pressure release valve and screw in the vacuum adapter.
Allow the tank to drain completely flushing out flakes of mineral deposits along with the cooled water.
Open a hot water tap close.
Open the drain valve at the bottom of the hot water heater tank.
Take a water hose and attach it to the drain valve.
Open the drain valve after unscrewing the water supply line and allow sufficient time for the water to drain out of the heater into the basin.
If there is a thick layer of dust or dirt on your hot water heater use a shop vac to take off as much dust as possible.
Attach the shop vacuum hose and fire up the vacuum.
If necessary unthread any mounting screws and remove the burner access cover.
How to clean a hot water heater.
Before you begin be sure to unplug the water heater s power cord and shut off the gas supply.
Use the crevice.
Run the hose end to a basin where you can collect hot water.