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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.
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.
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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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