Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS Table-P, Test Recommended Level

Installation and Service Manual

TABLE-P

Recommended Water Chemistry

Test	Recommended Level
Correct pH	7.2 - 7.8
Chlorine Residual	1.0 - 5.0 PPM
Total Alkalinity	80 - 120 PPM
Calcium Hardness	175 - 350 PPM

Chlorine residual is the chlorine remaining in the pool water after it is consumed in the process of destroying bacteria, algae and other oxidizable materials. Total alkalinity is the measurement of the total amount of alkaline chemicals in the water. Alkalinity controls pH. Sodium bicarbonate is used to raise total alkalinity. Calcium hardness can be raised by the addition of calcium chloride, and lowered by the addition of Tri-sodium Phosphate or its equivalent. The corrosive level of pool water can also be measured by the Ryznar Stability Index. This index is calculated by a formula which uses operating temperatures, total alkalinity, pH, calcium hardness and total dissolved solids. The Ryznar Stability Index is able to predict more accurately the scaling or corrosive tendencies of swimming pool water. Balanced water within the guidelines of the Ryznar Stability Index are from 6.3 - 6.7. Use of the Ryznar Stability Index may help prolong the service life of pool equipment, which in turn will be a cost savings to the commercial pool owner. Your pool dealer can provide additional data and equipment to make this measurement if a problem exists.

Refer to Circulating Pump on page 46 for information relating to pump wiring.

TABLE-Q

AMP Draw Data

Btu/Hr				Approximate
Input	Controls	Fans	Pump	Total Amps
500,000	3.6	2.7	5.0	11.3
650,000	5.4	3.4	5.0	13.8
750,000	5.4	3.4	5.0	13.8
990,000	7.3	3.2	7.4	17.9
1,260,000	7.3	3.2	7.4	17.9
1,440,000	7.3	6.7	7.4	21.4
1,800,000	7.3	6.7	8.8	22.8
2,070,000	7.3	6.7	8.8	22.8

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