Fitting The Thermometer And Dhw Sensor; Commissioning; Appliance Handover; Shutting Down - STIEBEL ELTRON SBB 301 WP Operation And Installation

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1
1 Cold water connection
2 Cold water inlet pipe
f Connect the cold water supply directly to the cylinder or with
the connecting pipe routed between the cylinder feet.
f During fitting, counterhold the fitting with an open-ended
spanner (size 36).
f Check the rigidity of the connecting pipe and secure it further
if required.
f Size the drain so that water can drain off unimpeded when
the safety valve is fully opened. The blow-off aperture of the
safety valve must remain open to the atmosphere.
f Fit the blow-off line of the safety assembly with a constant
slope.
f Observe the information in the installation instructions of the
safety assembly.
9.5

Fitting the thermometer and DHW sensor

1 Thermometer
f Insert the thermometer as far as it will go and align it.
f Insert the DHW sensor as far as it will go into the well for the
heat pump flow sensor (recommended energy saving posi-
tion) or heat pump return sensor (high DHW convenience).
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10. Commissioning

f Open a downstream draw-off point until the appliance has
filled up and the pipes are free of air.
f Vent the indirect coils after filling the heat pump system.
f Fit the accessories and check them if necessary.
f Check the function of the safety valve.
2
f Check that the DHW temperature on the heat pump control
unit is displayed correctly.

10.1 Appliance handover

f Explain the appliance function to users and familiarise them
with its operation.
f Make users aware of potential dangers, especially the risk of
scalding.
f Hand over these instructions.

11. Shutting down

f Disconnect the appliance from the mains at the MCB/fuse in
the fuse box.
f Drain the appliance. See chapter "Maintenance / Draining the
appliance".

12. Troubleshooting

12.1 Fault table

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The safety valve drips
when the heating is
1
switched off.
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The valve seat is con- Clean the valve seat.
taminated.
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