Hello, Sharon -
Reliance manufactures many types of water heaters. Without knowing which one you have, it is a challenge to look for the right owner's manual for you.
If you have not already done so, I suggest you go to the Reliance Water Heater web site:
http://www.reliancewaterheaters.com/
Scroll down the home page to see the column at the bottom, second from the right: Resources.
The second choice listed in that column, Instructions Manuals, is the one you should choose. Check the list of manuals to find one for your model.
Note: All the manuals are in PDF format, so you need to have Adobe Acrobat Reader software installed to read and save the manual. Be sure to save the manual with a file name you can find easily.
If you do not find a manual for your model of Reliance water heater, then I suggest you contact the company Customer Service department and ask about the availability of an owner's manual for your model.
Best wishes.