Bosch C1210ES Specifications download pdf (Page 29)

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Installation instructions

3.9 Water connections

B When facing the heater, the ¾" cold connection is

on the bottom right and the hot connection is on the

bottom left. Centrally locating the water heater is

recommended to keep hot water distribution times

even throughout the structure.

Fig. 32

Fig. 33 Water filter

1 Water valve with engine

2 Water filter

B The use of unions when connecting both water

pipes to the inlet and outlet connections is

required. This will facilitate any necessary

servicing.

B Plastic or PEX type plumbing line materials are not

suitable for connecting directly to the water heater.

B Although water piping throughout the building may

be other than copper, we recommend that copper or

suitably rated stainless steel flex line piping be used

for the water connections for at least 1.5 feet on

either side of the water heater (follow local codes if

more stringent).

B Never sweat any piping directly to or beneath

the water connections, as damage will occur to

the internal water valve from heating of the

pipe.

B Keep water inlet and outlet pipes to no less

than ¾" (19.05mm) diameter to allow the full

flow capacity.

B If the cold and hot connections to the heater are

reversed, the heater will not function. Be certain there

are no loose particles or dirt in the piping. Blow out

or flush the lines before connecting to the water

heater.

B Full port shutoff or isolation valves must be

installed on both the cold water supply and hot

water outlet lines to facilitate servicing the

heater (see Fig. 34).

B For installation on a private well system with the use

of a pressure tank, the lowest pressure range setting

recommended is 40-60 psi (2.75 - 4.15bar).

3.10 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

specified 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.

Warning: This heater is not approved

for preheated water supply exceeding

140°F (60°C).

HOT COLD

6720608836-11.1AL

Description Max. Levels

pH pH 6.5 - 8.5

TDS (total Dissolved

Solids)

mg/l or ppm 500

Total hardness mg/l or ppm

100

(6 grains)

Aluminum mg/l or ppm 2.0

Chlorides mg/l or ppm 250

Copper mg/l or ppm 1.0

Iron mg/l or ppm 0.3

Manganese mg/l or ppm 0.05

Zinc mg/l or ppm 5.0

Table 20

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 71 72

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Bosch C1210ES Specifications Page 29

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