winterizing

Try looking in the dump valve compartment. On our 845 there are two clear vinyl tubes with 90° valves. Under the sink you should find a winterizing valve. When turned to the winterize position the pigtail can be stuck in a jug of RV antifreeze and it siphons from there instead of the freshwater tank and through all the fixtures when you turn the pump on and open the taps including the commode. Don't forget the outside shower if you have one. One gallon ought to do it. You probably have a low point drain plug on the water heater tank that will get that empty. Remember to completely flush the system in spring.