Water Quality - Bosch C1210ES Applications Manual

1 4 | THERM/GREENTHERM Tankless Water Heaters

7 Water Quality

Water quality can have an impact on appliance
longevity and may void the manufacturer's warranty.
For water analysis data call your local water department,
or if on a well, have well water analyzed periodically. If
water quality exceeds one or more of the values
speci ed below, Bosch recommends installing a water
conditioner or softener. If the tankless water heater is
operating in applications where the outlet temperature
exceeds 140°F, a water softening system is strongly
recommended. The higher the set temperature is on the
appliance, the greater the risk for scale/mineral
deposits. Damage from scale/mineral deposits is not
covered under warranty. Refer to manufacturer's limited
warranty.
Water quality limits
Description
pH
TDS (total dissolved solids)
Total hardness
Aluminum
Chlorides
Copper
Iron
Manganese
Zinc
Data subject to change
Unit Max. Levels
pH 6.5 - 8.5
mg/l or ppm 500
mg/l or ppm 100 (6 grains)
mg/l or ppm 2.0
mg/l or ppm 250
mg/l or ppm 1.0
mg/l or ppm 0.3
mg/l or ppm 0.05
mg/l or ppm 5.0
Applications Manual
Bosch Thermotechnology Corp.