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INSTALLATION
Commissioning
All appliance models
f Size the drain so that water can drain off unimpeded when
the safety valve is fully opened.
f Fit the discharge pipe of the safety valve with a constant
downward slope and in a room free from the risk of frost.
f The safety valve discharge aperture must remain open to
atmosphere.
10. Commissioning
10.1 Initial start-up
f Open a draw-off point until the appliance has filled up and
the pipework is free of air.
f Adjust the flow rate. For this, observe the maximum permis-
sible flow rate with a fully opened tap (see chapter "Specifi-
cation / Data table"). If necessary reduce the flow rate at the
butterfly valve of the safety assembly.
f Carry out a tightness check.
f Switch the mains power ON if required.
f Check the function of the fitted accessories.
f Check the function of the safety assembly.
10.1.1 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.
10.2 Recommissioning
See chapter "Commissioning / Initial start-up".
11. Taking the appliance out of use
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
Fault
Cause
The safety valve drips
The valve seat is contam-
when heating is
inated.
switched off.
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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
13.2 Draining the appliance
If it is necessary to drain the cylinder for maintenance or to protect
the whole installation from frost, proceed as follows:
f Close the shut-off valve in the cold water supply line.
f Open the hot water taps on all draw-off points.
f Drain the appliance via the safety assembly.
SB S
Residual water will remain in the cold water supply pipe.
13.3 Replacing the signal anode
f Replace the signal anode if it becomes depleted. Beachten
13.4 Cleaning and descaling the appliance
f Never use descaling pumps.
f Descale the flanged immersion heater only after it has been
f Never treat the cylinder surface or the protective anode with
Remedy
Torque of the flange screws: see chapter "Specification / Dimen-
Clean the valve seat.
sions and connections"
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
full water jet is discharged.
WARNING Burns
Hot water may escape during the draining process.
Sie dabei den maximalen Übergangswiderstand 0,3 Ω zwis-
chen Schutzanode und Behälter.
removed.
descaling agents.
SB S | SB AC |
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