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6
Commissioning
Making the electrical connection
▶ If necessary, make knock-outs [1] in the rear panel of the cable duct
or remove the rear panel section [2].
Fig. 34 Preparing the cable entry
[1]
Knock-outs
[2]
Back panel section
▶ Route the sensor lead separately from other cables.
▶ Make the plug-in connection in the control unit in accordance with the
labelling on the terminal strip.
▶ Route the burner cable through the cable feed in the front boiler cover
to the control unit.
▶ Connect the burner cable to the control unit in accordance with the
labelling on the plug-in connector strip.
▶ Make all electrical connections to the appropriate plug-in connectors
according to the wiring diagram.
Secure all data cables with cable clips (supplied with the control unit):
1. With the cable in place, insert the cable clips, as shown in Fig. 35,
from above into the slots in the clip frame.
2. Slide the cable clip downwards.
3. Counterhold.
4. Flip the lever up.
.
.
Fig. 35 Securing the cable with cable clips
▶ Put the cover ( Fig. 33) back on the control unit.
▶ Tighten screws ( Fig. 33) to secure the control unit cover hood.
28
.
.
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6720615883-31.1RS
6
Commissioning
NOTICE: System damage through incorrect burner
adjustment (over-firing)!
▶ Ensure that the burner set value does not exceed the
combustion output Qn (Hi) specified on the type plate
of the condensing boiler.
NOTICE: Risk of boiler damage through contaminated
combustion air.
▶ Never operate the boiler in very dusty conditions, e.g.
if building work is taking place in the installation room.
▶ Ensure adequate ventilation.
▶ Never use or store chlorinated cleaning agents or
halogenated hydrocarbons (as contained in spray
cans, solvents or cleaning agents, paints and
adhesives, for example) in the boiler room.
▶ A burner contaminated during building work must be
cleaned before commissioning.
▶ Complete the commissioning report ( chapter 6.6, page 30).
6.1
Flushing the heating system
If the heating system contains several heating circuits,
these must be flushed one after the other.
To prevent contamination in the boiler, flush the heating system prior to
commissioning.
▶ Flush the system prior to connection to the boiler.
-or-
▶ Isolate the heating flow and return to the boiler.
▶ Connect the heating flow to a water connection.
▶ Connect hose to the heating return of the heating system.
▶ Route hose from the heating return to a drain.
▶ Open connected consumers (e.g. radiators).
▶ Flush the heating system with fresh water until clear water emerges
from the heating return.
▶ Drain the heating system.
Refer to to current standards and codes of practice for
further advise on flushing heating systems
NOTICE: Never flush directly through the boiler
Logano plus SB325 – 6 720 806 328 (2013/07)
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