12-18-2017, 07:43 PM
mine had 4 valves. 2 for the coming and going of the dash heater core. and another two that goes to the aquahot to heat the water with engine coolant, just like your marine hot water heater.
tom
tom
2002 45'8" Newell Coach 608 Series 60 DDEC4/Allison World 6 Speed HD4000MH