Shutdown
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Worcester Commercial Boiler Series – 6720814332 (2019/04)
Table 16 Commissioning report
9
Shutdown
9.1
Standard shutdown
▶ Take the boiler out of operation via the on/off switch.
▶ Close the gas isolation valve.
▶ Close the flow and return isolation valves.
9.2
Shutting down when there is a risk of frost
If the boiler stays on:
▶ Set the pump overrun time to 24 hours (
Chapter 7.2 "Setup
▶ Make sure that a sufficient flow is possible at all radiators.
If the boiler is switched off:
▶ Take the boiler out of operation via the on/off switch.
▶ Close gas isolation valve.
▶ Drain the entire heating system.
▶ If installed, drain the entire potable water system.
10
Environmental protection/disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy and environmental safety are
all of equal importance to us and all environmental protection legislation
and regulations are strictly observed.
We use the best possible technology and materials for protecting the
environment taking account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can be
recycled.
Used appliances
Used appliances contain valuable materials that can be recycled.
The various assemblies can be easily dismantled. Synthetic materials are
marked accordingly. Assemblies can therefore be sorted by composition
and passed on for recycling or disposal.
Used electrical and electronic appliances
Electrical or electronic devices that are no longer
serviceable must be collected separately and sent for
environmentally compatible recycling (in accordance with
the European Waste Electrical and Electronic Equipment
Directive).
To dispose of old electrical or electronic devices, you
should use the return and collection systems put in place in the country
concerned.
Batteries must not be disposed together with your household waste.
Used batteries must be disposed of in local collection systems.
11
Inspection and servicing
To safeguard the efficiency of the boiler and avoid possible technical
problems, the boiler must be inspected and serviced at least once a year.
WARNING:
Gas explosion!
▶ Turn off gas valve before working on gas-carrying components. Guard
against unintentional re-connection.
▶ Check for leaks before working on gas-carrying components.
WARNING:
flue gas poisoning.
▶ Check flue integrity for leaks before working on gas-carrying
components.
CAUTION:
Risk of electric shock.
▶ When performing measurements and adjustments at the boiler,
never touch the burner control unit, fan or pump. These are 230 V
parts.
▶ Always isolate the boiler from the power supply before working on the
electrical parts. Guard against unintentional re-connection.
11.1
Important information
You will need the following measuring devices and tools:
• Pressure gauge with a measurement accuracy of 0.01 mbar.
▶ Use only original spare parts.
▶ When carrying out the work, check all removed gaskets for damage,
deformation or ageing and replace if necessary.
11.2
Remove the gas-air unit
▶ Remove the mains plug and control signal to the fan.
Fig. 76 Removing the mains plug of the fan
0010010038-001