Originally Posted by
Rick Maday
I'm trying to find some logic to it.
The "logic to it" (without considering the code requirements) is that the water 'will not splash all over, will not overflow the water heater drain pan, and will not leak all over when doing the preceding'.
Did you get the other items in that photo also
- combustion air size and height above the floor
- sediment traps
- access to water heater
- ??