Geostar ASTON Series Installation Manual
Also see for ASTON SERIES: Installation manualManualInstallation manualInstallation manualInstallation manual
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8In ground water situations where scaling could be heavy or wherebiological growth such as iron bacteria will be present, a closedloop system is recommended. The heat exchanger coils in groundwater systems may, over a period of time, lose heat exchangecapabilities due to a buildup of mineral deposits inside. Thesecan be cleaned, but only by a qualified service mechanic, asspecial solutions and pumping equipment are required. Hot watergenerator coils can likewise become scaled and possibly plugged.In areas with extremely hard water, the owner should be informedWater QualityMaterial Copper 90/10 Cupronickel 316 Stainless SteelpH Acidity/Alkalinity 7 - 9 7 - 9 7 - 9Scaling Calcium andMagnesium Carbonate(Total Hardness)less than 350 ppm(Total Hardness)less than 350 ppm(Total Hardness)less than 350 ppmCorrosionHydrogen Sulfide Less than 0.5 ppm (rotten eggsmell appears at 0.5 ppm) 10 - 50 ppm Less than 1 ppmSulfates Less than 125 ppm Less than 125 ppm Less than 200 ppmChlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmChlorides Less than 20 ppm Less than 125 ppm Less than 300 ppmCarbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppmAmmonia Less than 2 ppm Less than 2 ppm Less than 20 ppmAmmonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmAmmonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmAmmonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmAmmonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmTotal Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppmLSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5Iron Fouling(Biological Growth)Iron, FE 2 + (Ferrous)Bacterial Iron Potential < 0.2 ppm < 0.2 ppm < 0.2 ppmIron Oxide Less than 1 ppm, above this leveldeposition will occurLess than 1 ppm, above this leveldeposition will occurLess than 1 ppm, above this leveldeposition will occurErosionSuspended Solids Less than 10 ppm and filtered formax. of 600 micron sizeLess than 10 ppm and filtered formax. of 600 micron sizeLess than 10 ppm and filtered formax. of 600 micron sizeThreshold Velocity(Fresh Water) < 6 ft/sec < 6 ft/sec < 6 ft/secNOTES: Grains = ppm divided by 17mg/L is equivalent to ppm2/22/12that the heat exchanger may require occasional flushing. Failureto adhere to the guidelines in the water quality table could result inloss of warranty.Units with cupronickel heat exchangers are recommended foropen loop applications due to the increased resistance to build-upand corrosion, along with reduced wear caused by acid cleaning.ASTON DUAL-CAPACITY OUTDOOR SPLIT SERIES INSTALLATION MANUAL |
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