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6
Commissioning
6
Commissioning
NOTICE: Risk of system damage through excessive
pressure!
Excessive pressure can result in tension cracks in the
enamel coating.
▶ Never close the blow-off line of the safety valve.
▶ Commission all assemblies and accessories as specified in the
manufacturer's technical documentation.
6.1
Commissioning the DHW cylinder
Check the DHW cylinder for leaks using potable water
only.
On the DHW side, the test pressure must not exceed 10 bar (150 psi)
positive pressure.
▶ Flush the DHW cylinder and pipework thoroughly prior to
commissioning ( Fig. 13, page 69).
6.2
Instructing users
WARNING: Risk of scalding at the hot water draw-off
points!
There is a risk of scalding at the hot water draw-off
points if the DHW temperature is set above 60 °C and
during thermal disinfection.
▶ Advise users that they should only draw off mixed
water.
▶ Explain the operation and handling of the heating system and DHW
cylinder, making a particular point of safety-relevant features.
▶ Explain the function and checking of the safety valve.
▶ Hand all enclosed documents over to the user.
▶ User recommendation: Arrange an inspection/maintenance
contract with an approved heating contractor. Have the DHW
cylinder inspected and, if required, serviced annually in accordance
with the service intervals stated ( Table 8, page 43).
▶ Highlight the following for the user:
– Water may be discharged from the safety valve during heat-up.
– The safety valve discharge pipe must always be kept open.
– Service intervals must be observed ( Table 8, page 43).
– Recommendation in the case where there is a risk of frost and
when the user is briefly away: Keep the DHW in operation and
select the lowest possible DHW temperature.
42
7
Shutting down
▶ If an immersion heater has been fitted (accessory), isolate the DHW
cylinder from the power supply .
▶ Switch off the temperature controller at the control unit.
WARNING: Scalding from hot water!
▶ Let the DHW cylinder cool down sufficiently.
▶ Drain the DHW cylinder ( Fig. 15 and 16, page 70).
▶ Decommission all assemblies and accessories of the heating system
as specified in the manufacturer's technical documentation.
▶ Close the shut-off valves ( Fig. 17, page 70).
▶ Depressurize the indirect coils.
▶ Drain and blow out the indirect coils ( Fig. 18, page 70).
▶ To prevent corrosion, dry out the interior and keep the inspection
aperture covers open.
8
Environmental protection/disposal
Environmental protection is a fundamental principle of the
Bosch Group.
Quality of products, efficiency and environmental protection are equally
important objectives for us. All legislation pertaining to the environment
is strictly observed.
Packaging
We are dedicated in adhering to country-specific disposal standards as
they relate to packaging to ensure optimum recycling. All packaging
materials are environmentally compatible and can be recycled.
Used appliances
Used appliances contain materials that should be recycled.
The assemblies are easy to separate and the types of plastic used are
identified. This allows the various assemblies to be appropriately sorted
for recycling or disposal.
SU120.5 | SU160.5 | SU200.5 | SU200.5 E – 6 720 819 283 (2022/03)
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