To present a slide show I downloaded the Chrome browser. to show the browser screen on the Chromecast receiver monitor/TV. For the slideshow I added the Chrome browser iSlide extension. I found that I could not use it directly to present a folder of photos on the laptop.
Check for local requirements. To have a gas water heater, you will need a supply of gas. If you are going to install gas piping or change the gas piping you already have, a separate gas-piping permit must be obtained. The gas piping must not block the removal of the tank. Always adhere to the manufacturer's installation instructions.
The pilot light from your water heater is the flame that will ignite the fumes from any spilled flammable liquids. If your water heater is NOT a flammable vapor ignition resistance water heater, it must be raised to 18 inches if it is located in the garage where a car would be parked. In some of the cities on the Peninsula and in the Bay Area, you may install a flammable vapor ignition resistance water heater on the ground in a garage.