Step-by-Step Instructions for Water Test Kit 405

NOTE: ANY time water is added to the system, it is extremely important to bring the water temperature up to operating temperature (185°F) as soon as possible, even if it is during the off-season.

To obtain a system water sample, bend the sight gauge tube away from the outdoor furnace. Before collecting the sample, open the valve and drain about a quart of water from the sight gauge tube; then carefully fill the sample container without contaminating the sample. Be sure to properly install the sight gauge tube and close the valve when finished. The water in the sight gauge valve and tube will drain when the valve is closed.

For systems without boiler-type antifreeze, use Nitrite Test Kit (p/n 405), provided with the outdoor furnace. For systems with boiler-type antifreeze, use the Antifreeze Specific Nitrite Test Kit (p/n 597) which may be purchased from your Central Boiler dealer. NOTE: For more information about using antifreeze in your outdoor furnace system, refer to the Installation Guide.

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. The pH of the water should now be between 8.0 and 9.5.

Rinse and fill the sample tube to the 25 mL mark with treated water from the outdoor furnace.

Add 25 drops of Sulfuric Acid (p/n 404) to the water sample and swirl to mix.

Using the dropper, add Permanganate Reagent (p/n 403) one drop at a time, swirling the water and counting each drop, until the color changes from colorless to pink that persists for at least one minute. One drop of permanganate reagent equals approximately 100 ppm.

NOTE: Always hold the dropper in a vertical position to ensure proper droplet size.

• The initial nitrite level should be 2000 ppm (20 drops by nitrite test), but 2000-3000 ppm (20 to 30 drops by nitrite test) is acceptable. Do not exceed treatment of higher than 3000 ppm (30 drops by nitrite test).

• If the nitrite level is not at least 2000 ppm (20 drops by nitrite test), add 1/4 unit of 1650XL Inhibitor Plus (p/n 1650); then circulate water for another 24 hours and repeat procedure, as needed, to achieve a nitrite level of at least 2000 ppm (20 drops by nitrite test).
• Do not exceed treatment of higher than 3000 ppm (30 drops by the nitrite test). If the test requires more than 30 drops, dilute the water by draining water from the system until the water level just reaches the bottom of the sight gauge; then add untreated water until the water level reaches the full mark. NOTE: ANY time water is added to the system, it is extremely important to bring the water temperature up to operating temperature (185°F) as soon as possible, even if it is during the off-season. Circulate the water for another 24 hours and test again to achieve a nitrite level between 2000-3000 ppm (20-30 drops by nitrite test).
• After the proper nitrite level has been obtained, check pH to make sure it is between 8 and 9.5.
• After initial treatment, the maintenance minimum nitrite level is 1500 ppm (15 drops by nitrite test). An acceptable nitrite level is 1500-3000 ppm (15 to 30 drops by nitrite test). The lower the nitrite levels are below 1500 ppm, the higher the likelihood of water jacket failure.