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Topic: Changing Coolant--Aquahot Loop? (Read 304 times) previous topic - next topic

Changing Coolant--Aquahot Loop?

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? 
Old Scout
2015 IH45
New Braunfels Tx

Re: Changing Coolant--Aquahot Loop?

Reply #1 –
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 Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Changing Coolant--Aquahot Loop?

Reply #2 –
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.
Keith
2003 U320 38' #6197
 

Re: Changing Coolant--Aquahot Loop?

Reply #3 –
I do not know the capacity of the engine loop.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas