Water Chemistry Requirements - Bosch TRONIC 5000T ES30M Installation Manual

6 Water Chemistry Requirements

NOTICE:
 Chemical imbalance of the water supply may affect
efficiency and cause severe damage to the appliance and
associated equipment. Water quality must be professionally
analyzed to determine whether it is necessary to treat the
water. Various solutions are available to adjust water quality.
Adverse water quality will affect the reliability of the system.
In addition, operating temperatures above 135°F will
accelerate the build-up of lime scale and possibly shorten
appliance service life. Failure of an appliance due to lime
scale build-up, low pH, or other chemical imbalance IS NOT
covered by the warranty.
The water must be potable, free of corrosive chemicals, sand, dirt, and other
contaminates. It is up to the installer to ensure the water does not contain corrosive
chemicals or elements that can damage the heat exchanger. Potable water is
defi ned as drinkable water supplied from utility or well water in compliance
with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the
water contains contaminants higher than outlined by the EPA, water treatment is
required.
If you suspect that your water is contaminated in any way, discontinue use of the
appliance and contact an authorized technician or licensed professional.
Water pH must be between 6.5 and 8.5
 pH levels below 6.5 can cause an increase in the rate of corrosion. pH of
8.5 or higher can potentially cause lime scale build-up.
 Maintain water pH between 6.5 and 8.5. Check with litmus paper or have
it chemically analyzed by a local water treatment company.
 If the pH is not between 6.5 and 8.5, consult a local water treatment
company for solutions.
Water Hardness
 Water hardness levels above the upper limit of 7 grains/gallon (120 mg/L)
can lead to lime scale build-up throughout the system. Water hardness
below the lower limit of 5 grains/gallon (85 mg/L) may be over-softened.
 Consult local water treatment companies if the water hardness is outside
the required level of between 5 and 7 grains/gallon.
Chloride concentration must be less than 100 ppm (mg/L)
 Do not fill appliance or operate with water containing chlorides in excess
of 100 ppm (mg/L).
 Using chlorinated fresh water is acceptable if the level of chloride
concentration is less than 5ppg (mg/L).
 Do not connect the appliance to directly heat swimming pool or spa water.
Bosch Tronic 5000T Electric Water Heaters- BTC 724001301 A (10.2021)
Total Dissolved Solids (TDS) must be less than 500 ppm (mg/L)
 Total dissolved solids are minerals, salts, metals, and charged particles
that are dissolved in water.
 The greater the amounts of TDS present, the higher the corrosion
potential due to increased conductivity in the water.
 If using softened water to fill the appliance, it is still possible to have
high TDS. This water can be corrosive. Consult local water treatment
companies for other treatment solutions to reduce this affect.
F ollow the required maintenance procedures in this manual to promote
appliance service life.
NOTICE: PRODUCT DAMAGE
 Failure of electric elements due to lime scale build-up on the
heating surface, low pH, or other imbalance IS NOT covered
by the warranty.
Installation Manual
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