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CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
If the test indicates a significantly lower pH level or higher nitrite level,
perform another test with a new test kit to verify the results. If the results are
+10% different using a new test kit, either water or Corrosion Inhibitor Plus™
has been added to the system.
If a test is conducted and verified that indicates a high pH (above 9.5) and/
or nitrite level (above 30 drops), DO NOT ADD MORE CORROSION
INHIBITOR PLUS™. Adding Corrosion Inhibitor Plus™ increases nitrite and
pH levels.
The outdoor furnace should be drained until the water in the sight gauge
reaches the bottom of the sight gauge; then add fresh water until it is 1 inch
(2,5 cm) below the FULL mark on the sight gauge. Circulate the water for 24
hours and test the water again.
Testing Supply Water
Before filling the outdoor furnace with water, test a sample of the supply water
that will be used to fill the outdoor furnace (softened water is recommended).
1. Collect a small sample of the water to be used to fill the outdoor furnace
in a clean container.
2. Dip the pH test strip from the test kit in the water sample. Shake excess
water off the test strip. Compare the color of the test strip to the chart
provided to determine pH level.
3. If the pH level is between 6.5 and 8.0 and there are no other known water
quality problems, then the outdoor furnace may be filled with this water.
4. If the water to be used to fill the outdoor furnace has a pH level of less
than 6.5 or greater than 8, a sample of the water should be sent to a
water quality test lab for recommended treatment, the water should be
conditioned, or water should be supplied from a different source.
Corrosion Inhibitor Plus™ and Initial Treatment
Central Boiler Corrosion Inhibitor Plus™ (p/n 1650) gives optimum protection
when it is used to initially treat the water and is then maintained at proper
levels. The initial nitrite level target is 20 drops by nitrite test, but 20 to 30
drops is acceptable. Do not exceed treatment of higher than 30 drops by nitrite
test.
The recommended initial treatment rate for the outdoor furnace is specified
by units. One unit of the Corrosion Inhibitor Plus™ is a 1-gallon (3.78-liter)
container.
INITIAL CORROSION INHIBITOR TREATMENT AMOUNTS
Classic Edge 350/550
1 unit
Classic Edge 750
2 units
