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AquaHot antifreeze change
#1

I need to drain and refill my AquaHot antifreeze.  Please let me know where the drain plug is and how much does it hold.

2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica
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#2

Drain is below and behind burner, 16 plus gallons

Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area
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#3

Rudy, does burner have to be removed?

2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica
Reply
#4

Also Rudy, an inspector of my coach recommends food grade antifreeze, and is this appropriate my boiler which is the older unit.
While food grade is not required, is it OK to use?

2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica
Reply
#5

Chester,

The drain valve is near the rear of the burner and can be reached without removing the burner. It will the tight though as it is behind the burner.

You can use engine coolant, the same as in generator and/or engine. Newer heaters with an electronic control board require GRAS (Generall Recognized As Safe) boiler antifreeze or coolant.

Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area
Reply
#6

Rudy, do you know of anyone in the Phoenix area that is qualified to change out the antifreeze?

2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica
Reply
#7

You might call John Carrillo, 970 5 one 8 3 zero 85, to see if he is still in Az.

Why do you want to change the fluid? If not contaminated, I would not suggest the change.

Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area
Reply


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