Our dealer told us the drain on the outside was the low point drain. I made the comment that it seemed strange that there was only one. I said that there is normally one for the hot and one for the cold. He said "They must tie them together in someway." I didn't argue but did determine that the drain he said was the low point drain was actually the drain for the fresh water tank. Have not yet found the low point drain although I did get schematic from Thor that should help me find them when i get the opportunity.
__________________
|