There should be two screws holding the cover on. You will need to disconnect the supply line for the burner and pilot light, the thermocouple and the sparker wire and take the burner out as a unit.
yes and when it breaks your water heater will leak when the steel tank rust.
As long as you own it.
There should be a dial on the front of the heater that you set the temp. with.
Yes. That model has a glasslined tank.
Being in a closed room with the heater on become stuffy an losers oxygen.
Personally I would not, as the cold water could thermo-shock the heater. And if you have a glass-lined tank, it will crack it and shorten the life of the tank. I would follow the manufacturer's instructions.
heater core is shot...
There should be a plate or decal on the front of the heater that says how many gallons it is. It has other information on it also.
If a sufficient amount of energy is added to a glass of ice water, the ice will melt, and if a sufficient amount of energy is removed, the water will freeze solid.
A well-used glass lantern will inevitably get some soot on it make sure you clean the glass with soapy water to lift off the oil that water alone cannot remove.
Begin by removing the water supply hoses from your 1989 Chevy heater core. Remove the heater core retaining bolts. The heater core can be removed.
turn off water on cold inlet to heater. attach water hose to drain hosebib on front bottom of heater. turn on hosebib, then either open cold water flex line to create a vacuum so the tank will drain. then the anode rod will be the plug style behind the vent or sometimes in front of the vent. if no plug is found the anode rod is attached to the hot nipple usually found on ( a.o smith, bradeford whites and some rheems). remove anode you will notice if its corroded then replace same way anode was removed.