State GTS-710-PIEA - Manual (Page 52)

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 Water: incorrect water pipe sizing, water pressures that fall outside the product’s specified range, recirculation flow rates that fall
outside the product’s specified range (air removal), and/or lack of proper methods of air removal in a closed-loop, circulation
system. (See installation manual for details.)
 Electric: supply power voltages that fall outside the product’s specified range.
 Damages due to water quality:
 Introduction of liquids other than potable water or potable water / glycol mixtures into the product.
 Introduction of pool water, spa water, or any chemically treated water into the product.
 Introduction of hard water measuring more than 7 grains per gallon (120 ppm) for single family domestic applications or more
than 4 grains per gallon (70 ppm) for all other types of applications into the product.
 Introduction of untreated or poorly treated well water into the product.
 Introduction of water with pH levels less than 6.5 and greater than 8.5 into the product.
ATM32
63T051-5