Water Quality Requirements - Bosch TRONIC 4000 C Installation Manual

3 Water Quality Requirements

CAUTION: PROPERTY DAMAGE, PRODUCT DAMAGE
 Chemical imbalance of the water supply may aff ect
effi ciency 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 aff ect 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, and meet the manufacturer's requirements. 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 and the manufacturer, water treatment is recommended and
additional, more frequent maintenance may be 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.
Contaminant
pH
Total Dissolved Solids (TDS)
Free CO2
Total Hardness
Aluminum
Chloride
Copper
Iron
Manganese
Zinc
Table 3 Water Quality Requirements
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.
H ard water, water containing mineral concentration of over
250 mg/liter, may cause a scale build up that can damage the product.
In case of hard water it is recommended to use an anti-scale treatment.
Damage caused by scale is not covered by the warranty.
Bosch Tronic TR4000C Electric Tankless Water Heaters- BTC 722203301 A (08.2022)
Maximum Allowable Level
6.5 - 8.5
Less than 500 mg/L
Less than 500 mg/L
Less than 200 mg/L
Less than 0.2 mg/L
Less than 250 mg/L
Less than 1.0 mg/L
Less than 0.3 mg/L
Less than 0.05 mg/L
Less than 5 mg/L
T o promote appliance service life, it is strongly recommended to follow
the maintenance procedures in this manual.
Installation Manual
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