Re: Propane Hot Water Heater woes... Maybe.
The recovery rate for this water heater is 10.2 gal/hour, to raise the temperature of the water by 90F. If you started with 45F water, and raised it to 135F, it would take about 35 minutes. Since you brought it up to 155F, 50 minutes might not be too far off.
However, 155F seems way too hot for me !!!