The standard manual gives you dimensions, but a "better" approach focuses on the environmental factors that lead to premature failure.
If you are looking for specific wiring diagrams or part numbers, always cross-reference this guide with the specific model number found on your unit's rating plate to ensure 100% compatibility. rheem 71000 manual better
Thermal Expansion ProtectionIn a closed plumbing system, water expands as it heats. If your manual mentions a thermal expansion tank, do not skip it. Without one, the constant pressure fluctuations will eventually crack the tank liner, voiding your warranty. The standard manual gives you dimensions, but a