The correct antifreeze solution mixture for protecting your
Aqua-Hot system depends on where you are and how cold it is — or can
Use the Propylene Glycol-Based Antifreeze Protection chart to determine
the protection you require in your Aqua-Hot system. Freezing Points are
temperatures at which ice crystals form. Even below those temperatures, a
slushy condition exist which may flow. Burst point is the temperature
where damage will occur to the coach; at antifreeze solution percentages
above 35%, burst protection is below -50 degrees F.
Aqua-Hot recommends the antifreeze solution contain between 35% and
50% propylene glycol boiler antifreeze to water mixture. Too much
antifreeze lowers the heat transfer capability, causes sticking check
valves in the heating zone lines, and may coat the system's interior
surfaces resulting in lower water and interior cabin temperature levels.
DO NOT exceed 50% propylene glycol in an Aqua-Hot system.
Your Aqua-Hot Factory Authorized Service Center will assure the proper ratios. If you do it yourself, check the color.
Green Color Ratio? The green color Century
brand boiler antifreeze is pre-mixed at approximately 37% propylene
glycol and requires NO dilution and it is not necessary to mix Century
boiler antifreeze with water before adding it to the Aqua-Hot system’s
Pink Color Ratio? The pink color Camco boiler antifreeze comes two ways: There's a pre-mixed gallon and a concentrated quart.
The Camco pre-mixed gallon has approximately 67%
propylene glycol. DILUTION IS REQUIRED to achieve the proper antifreeze
to water ratio. Add one (1) gallon of Antifreeze to one (1) gallon of
deionized or distilled water to reach a 35%-38% Propylene Glycol Level.
Check the diluted level of Propylene Glycol with a refractometer before
adding the new solution to the Aqua-Hot system antifreeze solution.
The Camco 32oz. concentrate contains approximately
97% propylene glycol. DILUTION IS REQUIRED. Add one (1) quart of
Antifreeze to two (2) quarts deionized or distilled water to reach a
35%-38% Propylene Glycol Level. Check the diluted level of Propylene
Glycol with a refractometer before adding the new antfreeze solution to
the Aqua-Hot system.
TIP: Don’t mix colors in your Aqua-Hot system. Mixing pink and
green boiler antifreeze produces a brown color that may be confused with
corrosion, creating unnecessary service expense. Camco and Century may
not honor the warranty of their product if mixed with another company's