[Guy]

                Our coach has a water hose in the mid bay area.I think it serves as a hot water loop. It seems to be a splitter, where 3/4 heater hoses join up from the cab heater, engine heat for pre heating the water heater water when under way, and also serve hot water up to the bedroom under bed hot water room heater. It began leaking last winter, and I had it replaced by Interstate Power in Sioux Falls. Today I noticed a 3/4 heater hose loop from this manifold , looping on top of the water heater, and returning to the mainfold. The hose is beginning to weep. 

I don't understand what the purpose of this loop. but I do need to replace the hose, with a much shorter loop. What can I be missing here. Anyone know what the purpose of this hose was? 

Also I notice that the hoses replaced by the Interstate Power are silicone. Should I do this bypass in silicone?