Working on a friends Aqua Hot. What tubing between the boiler tank and the recovery bottle. This coach has the recovery bottle 8+ feet from the unit. Currently has clear plastic, 2 90s, some kind of white semi ridged pipe. Trying to clean this mess up.
mine uses 5/16" Gates heater hose
I moved the recovery bottle right behind the Aqua-hot on the same side. It make more sense to
me to have it near the Aqua-hot and I needed the space where it was for the solar collector.
I use the same tubing on the aquahot, generator and main engine coolant overflow bottles. Bought a 25' length off of Amazon and replaced all three due to age cracking of the original. Also bought new spring type hose clamps for all ends.