Commissioning; Initial Start-Up; Recommissioning; Shutting Down The System - STIEBEL ELTRON SBB 300 WP Trend Operation And Installation

INSTALLATION

Commissioning

10. Commissioning

10.1 Initial start-up

f Open a downstream draw-off point until the appliance has f
filled up and the pipes are free of air.
f Vent the internal indirect coil. f
f Fit the accessories and check them if necessary. f
f Check the function of the safety valve. f
f Check that the DHW temperature on the heat pump control f
unit is displayed correctly.
10.1.1 Appliance handover
f Explain the appliance function to users and familiarise them f
with its operation.
f Make users aware of potential dangers, especially the risk of f
scalding.
f Hand over these instructions. f

10.2 Recommissioning

See chapter "Initial start-up".

11. Shutting down the system

f If necessary, disconnect any accessories installed from the f
mains at the MCB/fuse in the fuse box.
f Drain the appliance. See chapter "Maintenance / Draining the f
appliance".

12. Troubleshooting

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

13. Maintenance

WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
If you need to drain the appliance, observe chapter "Draining the
appliance".

13.1 Checking the safety valve

f Regularly vent the safety valve on the safety assembly until a f
full water jet is discharged.

13.2 Checking / replacing the protective anode

f Check the protective anode after the first 2 years of use and f
replace if necessary. For this, observe the maximum tran-
sient resistance 0.3 Ω between the protective anode and the
cylinder.
f Afterwards determine the time intervals at which further f
checks should be carried out.

13.3 Draining the appliance

WARNING Burns
Hot water may escape during the draining process.
f Close the shut-off valve in the cold water supply line. f
f Open the hot water taps on all draw-off points. f
f Drain the appliance via the drain valve. f

13.4 Cleaning and descaling the appliance

For the torque of the flange screws, see chapter "Specification /
Dimensions and connections".
f Never use descaling pumps. f
f Never treat the cylinder surface or the protective anode with f
descaling agents.
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