6 720 817 281 (2017/05)
Greentherm 9800 SEO 160/199 | SECO 199
Installation instructions | 19
6.2
Water quality
Water quality can have an impact on appliance longevity. Water
supplied to the Greentherm 9800 SEO / SECO must be in
accordance with table 10.
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.
6.3
Water connections
▶ When facing the heater, the ¾ " cold connection is on the
bottom right and the hot connection is on the bottom left.
▶ Tighten all water connections with the support of a wrench,
see Fig. 12.
Fig. 12
[1] Hot connection
[2] Cold connection
Fig. 13
Water filter
[1] Cap
[2] Water filter
▶ The use of unions when connecting 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 or within an 18" pipe run of 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 be used for the water
connections for 1.5’ on either side of the water heater
(follow local codes if more stringent).
Description
Max. Levels
pH
pH
6.5 - 8.5
TDS (total Dissolved Solids)
mg/l or ppm
690
Total hardness
mg/l or ppm
200
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 10
NOTICE:
▶ This heater is not approved for
preheated water applications exceeding
140 °F (60 °C) for Residential
appliances or 180 °F (82 °C) for
Commercial appliances, in these cases
use a 3-way valve or mixing valve must
be installed before the appliance to
prevent water exceeding 140 °F (60 °C)
for Residential appliances or 180 °F
(82 °C) for Commercial appliances,
from entering the appliance.
WARNING:
Appliance damage!
Appliance will overheat if not filled with water
▶ Ensure that the appliance is filled with
water by opening a hot water tap, before
plug in the water heater to the power
supply.
