Pentair MASTERTEMP 125 - Section 4. Maintenance; MAINTENANCE AND CARE

MASTERTEMP
®
125 Pool and Spa Heater Installation and User’s Guide Rev. B 8/14
48
CHEMICAL BALANCE (continued)
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If pH becomes too high (over alkaline), it has these effects:
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CAUTION: Do not test for pH when the chlorine residual is 3.0 ppm or higher, or bromine residual is
6.0 ppm or higher. See your local pool supply store for help in properly balancing your water chemistry.
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WATER CHEMISTRY PARAMETERS
Section 6. Maintenance
Table 7.
*Start-up TDS includes source water TDS and any other inorganic salt added at start-up.
NOTE (**): Failure to adhere to the listed water chemistry parameters may result in premature failure of the heat exchanger and will
VOIDTHEWARRANTY.
Disinfectant levels Minimum Ideal Maximum
Free Chlorine, ppm 1.0 2.0-4.0 5.0**
Combined Chlorine, ppm None None 0.2
Bromine, ppm 2.0 4-6 10.0
Other Sanitizers Levels not established. Consult local health department before use.
Chemical Values
pH 7.2 7.4-7.6 7.8**
Total Alkalinity (Buffering), ppm 60 80-100 180
as CaCO3
Salt ppm 2000 3200 5000**
Total Dissolved Solids, ppm N/A N/A 1,500 ppm > TDS at startup*
Calcium Hardness, ppm, as CaCO3 150 200-400 500-1,000
Heavy Metals None None None
Biological Values
Algae None None None
Bacteria None None Refer to Local Code