Stiebel Eltron SB AC с 08.06.2009: inStAllAtion CoMMiSSioning9. Commissioning

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inStAllAtion   CoMMiSSioning 9.  Commissioning

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Open a downstream draw-off valve until the appliance has filled 

up and the pipes are free of air.

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Adjust the flow rate. For this observe the maximum permissible 

flow rate with a fully opened tap (see chapter "Specification / 

Data table"). If necessary reduce the flow rate at the butterfly 

valve of the safety assembly.

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Carry out a tightness check.

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Switch the mains power ON if required.

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Check the function of the fitted special accessories.

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Check the function of the safety assembly.

10.  Taking the appliance out of use

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Disconnect the appliance from the mains at the MCB / fuse in 

the fuse box.

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Drain the appliance. See chapter "Maintenance / Draining the 

appliance".

11.  Recommissioning

See chapter "Commissioning".

12.  Appliance handover

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Explain the appliance function to users and familiarise them 

with its operation.

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Make users aware of potential dangers, especially the risk 

of scalding.

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Hand over these instructions.

13.  Troubleshooting

13.1  Fault table

fault

Cause

» remedy

The safety valve drips 

when the heating is 

switched off.

The valve seat is 

contaminated. 

Clean the valve seat. 

14.  Maintenance

Danger of electrocution!

Before any work on the appliance, disconnect all poles 

from the power supply.

If you need to drain the appliance, observe chapter "Draining the 

appliance".

14.1  checking the safety valve

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Regularly vent the safety valve on the safety assembly until a 

full water jet is discharged.

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Close the safety valve when the check is complete.

14.2  Draining the appliance

Risk of scalding!

Hot water can be expelled during draining

If the cylinder needs to be drained for maintenance or to protect 

it against the risk of frost, proceed as follows:

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Close the shut-off valve in the cold water line.

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Open the DHW valves on all draw-off points.

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Drain the appliance via the drain valve.

SB 302 S and SB 402 S

Residual water will remain in the cold water supply pipe.

14.3  replacing the signal anode

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Replace the signal anode if it becomes depleted. Observe the 

maximum permissible resistance between the anode and the 

cylinder (see chapter "Specification / Data table").

SB 302 S and SB 402 S

Segmented signal anode, part number 143498

SB 602 ac and SB 1002 ac

Signal anode, part number 140921

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If it is not possible to fit an anode rod from above, install a 

segmented signal anode.

Segmented signal anode, part number 143499

SB 650/3 ac

Segmented signal anode, part number 143499

14.4  Descaling the electric flanged immersion heater

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Do not use a descaling pump.

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Only descale the electric flanged immersion heater after 

disassembly and never treat the cylinder surface and signal 

anode with descaling agents.

For the torque of the flange screws, see chapter "Specification / 

Data table".

14.5  replacing the heating element and 

protective pipe

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Install the electrically insulated heating element and protective 

pipes into the flange plate.