Water Heater Exhaust
Hoping some of you may have expertise in this area. I purchased my home - new construction - nearly 7 years ago. The place came with a State Select 50g water heater with an exhaust blower unit connected to it at the top. That blower vented into black ABS out the top and then 90 degree on out to a whole for it on my garage wall.
This water heater officially died recently (leaking rusted water out of the bottom) - wholes in tank, not from valve or otherwise. I replaced it with a Rheem Performance Platinum unit from home depot. I went with the Performance Plat because of the $200 rebate from our utility company (PGE in NorCal) which made its costs in line with the standard performance line I started looking at.
Anyway, I haven't been able to find out a concrete answer on this - do I need a blower on the new heater since it vents essentially up and to the right? Also, since it is ABS, my understanding is the exhaust gases need to be cooled a bit and the blower provides that function as well mixing ambient air with the exhaust from the burner before expelling out the vent?
Any help is greatly appreciated - thank you!