Planning on switching to OAT coolant in my 2015 IH45, need to flush engine, and the dash heat and Aqua-hot loops. So, does engine coolant continuous circulate thru Aqua-hot loop whenever the Cummins engine running?
Yes Sir, anytime the main engine is moving its coolant it is being circulated to the heater inless it has been valved off. I have not heard of Foretravel installing the valves needed to do that. So, you are good to go.
Rudy, any idea how much engine coolant should be in a 100 unit? When I had to cut out the elbow on the coolant loop, I collected about 3 gallons after pinching off the two coolant lines to the unit. Does that sound right?
I've run the unit, the engine pre-heat pump and even driven the coach enough to get it to cycle the thermostat and so far it has not wanted that 3 gallons back yet. Reservoir is still where it should be. Seems odd.
I do not know the capacity of the engine loop.