Do Rheems come with pipe already installed in the holes?? Also I have a Lochinvar 50 ga electric about 2006 model. LTA052KK model. Where is the anode rod?? Do you think its worth changing the elements? I dont see any rust on the nipples. For about 5 years it was empty 5 months a year when I was away. I changed the thermostat 7 years ago and have had no issues with it.It is well insulated enough that the top metal is barely warm to the touch when in use. And contrary to the usual ideas, It has PEX right out the nipple on the hot side and I have never had any issues with that.