Bosch C1210ES Specifications download pdf (Page 28)

28 | Installation instructions

C 1210 ES/ESC6 720 644 887 (2014/11)

4.9 Water connections

▶ 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. 31

[1] Cold connection

[2] Hot connection

Fig. 32 Water filter

▶ The use of unions when connecting both water pipes to the inlet and

outlet connections is required. This will facilitate any necessary

servicing.

▶ Plastic or PEX type plumbing line materials are not suitable for

connecting directly to the water heater.

▶ 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 1.5’ on either

side of the water heater (follow local codes if more stringent).

▶ 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.

▶ Keep water inlet and outlet pipes to no less than ¾" (19.05mm)

diameter to allow the full flow capacity.

▶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.

▶ Full port shutoff valves should be installed on both the cold water

supply and hot water outlet lines to facilitate servicing the heater (see

fig. 33).

▶ 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).

4.10 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 consulting a

local water treatment professional for water softening/conditioning

options.

Connecting the pressure relief valve (PRV)

A listed pressure relief valve must be installed at the time of installation.

No valve is to be placed between the PRV and the heater. No reducing

coupling or other restriction may be installed in the discharge line. The

discharge line must be a minimum of 4” above a drain and installed such

that it allows complete drainage of both the PRV and the line. The

discharge line must be placed where it will not cause any damage.

The location of the PRV must be readily accessible for servicing or

replacement, and be mounted as close to the water heater as possible.

See fig. 33. To install the PRV, a suitable fitting connected to an

extension on a “T” fitting can be sweated to the hot water line.

Support all piping.

NOTICE:

▶ This heater is not approved for preheated water

applications exceeding 140°F (60°C).

NOTICE:

▶ In applications where inlet water temperature can

exceed 140°F (60ºC), a 3-way valve or mixing valve

must be installed before the appliance to prevent

water exceeding 140°F (60°C) from entering the

appliance.

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 29

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 63 64

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Bosch C1210ES Specifications Page 28

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