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• Freeze damage that occurs without taking proper preventive measures as described in the installation
manual.
• Condensate damage due to improperly installed or lack of a condensate trap (drain).
• Any product not installed in compliance with all applicable local & provincial codes, ordinances, and
good trade practices.
• Any product sold to or installed in areas outside of the fifty states (and the District of Columbia) of
the United States of America and Canada.
• Any product installed in applications that cause the water heater to activate more than 300 times per
day. (This averages to an activation every 5 minutes in a 24-hour period.)
• Any failures that are not due to defects in materials or workmanship (mechanical and/or electrical parts).
• Damages due to improper installation:
• Gas: incorrect gas pipe sizing, incorrect gas meter sizing, incorrect gas type, and/or gas pressures
that fall outside the product’s specified range.
• 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.
