11
Note
We recommend that you operate the boiler constantly
at the required operating pressure. The ongoing opera-
tion of the boiler at pressure is harmless, even if no
heat demand occurs for a longer period of time. In sys-
tems comprising several boilers, one of which is con-
stantly only used as a standby boiler, operating mode
changeover should take place at longer intervals. For
example, during the annual inspection of the entire
system.
Notice of completion
Within 4 weeks of the combustion equipment being
commissioned, the operator must notify the local flue
gas inspector accordingly [check local regulations].
Shutting down the system
Danger
Opening the boiler connections and apertures
whilst the boiler is under pressure can lead to a
high risk of severe personal injury.
Only open the connections on the water side
and steam side, as well as the inspection ports,
after the boiler has been completely depressur-
ised.
!
Please note
Negative pressure in the DHW cylinder can
cause material damage.
The air vent valve must always be open when
draining the DHW cylinder with a suction pump.
1.
Close the shut-off valves in the oil lines (at the oil
tank and filter) or the gas shut-off valve.
2.
Switch OFF the burner and the feedwater pump.
Pull the plug-in connector from the burner.
3.
Isolate the system from the power supply.
4.
Close all valves.
Closing the draught stabiliser (if installed)
1.
Start the burner.
2.
Shut the system down while pre-purge is active.
The control disc is then closed.
Opening the boiler door and cleaning cover
Danger
When working with high temperature insulating
materials that contain zirconium or aluminium
silicate ceramic fibres, fibre dust may
develop. This fibre dust can be harmful to
health.
Only trained personnel may adjust or replace
the insulation. Wear suitable protective clothing,
especially breathing equipment and safety gog-
gles.
Note
On gas burners, remove the gas supply pipe.
Commissioning, inspection, maintenance
Commissioning the system
(cont.)
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