Fitting The Water Connection And The Safety Assembly; Fitting The Thermometer And Dhw Sensor; Commissioning; Appliance Handover - STIEBEL ELTRON SBB 301 WP Operation And Installation Manual

INSTALLATION

Commissioning

9.4 Fitting the water connection and the safety
assembly
Note
Carry out all water connection and installation work in
accordance with regulations.
f Flush the line thoroughly.
f A DHW circulation line can be fitted to the "DHW circulation"
connection (see chapter "Specification / Dimensions and con-
nections"). Insert the adaptor supplied with flat gasket and
an extension.
f Connect the DHW outlet and the cold water inlet lines with
the safety assembly. Bear in mind that, depending on the
static pressure, you may also need a pressure reducing valve.
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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.
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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 into the upper "Sensor heat pump
DHW" sensor well (recommended position for energy sav-
ing). For higher levels of DHW convenience, you can alter-
natively insert the DHW sensor into the lower "Sensor heat
pump DHW optional" sensor well (higher energy demand).
2
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.
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

Fault
The safety valve drips
when the heating is
switched off.
Cause Remedy
The valve seat is con- Clean the valve seat.
taminated.
SBB 301-501 WP SOL |
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