Commissioning; Initial Start-Up; Recommissioning; Shutting Down The System - STIEBEL ELTRON SBB 400 WP Trend Bedienungsanleitung

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 Cause
The safety valve drips when The valve seat is con-
heating is switched off. taminated.
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13. Maintenance

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

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

Remedy
For the torque of the flange screws, see chapter "Specification /
Clean the valve seat.
Dimensions and connections".
f Never use descaling pumps. f
f Never treat the cylinder surface or the protective anode with f
descaling agents.
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Burns
Hot water may escape during the draining process.
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