Thanks. Pg. 35 has some clearances.
these suckers are heavy. . .
Regarding "the time to burn a child" table on pg. 66, I've heard that 42C will never burn an adult with normal blood circulation so if you don't have kids you can crank up the temp a bit.
At 11 GPM and 200,000 BTUH you only get a 37 F water temp rise but with a bathtub filling at 6 GPM you'd get a 67 F rise. I guess this is enough.
I don't have one of these but the numbers are telling me that as the temperature of the incoming water gets colder in winter you'll need to fill the bathtub more slowly if you want the same bath temp.