7 Commissioning
7.1
General
Follow the steps set out in the paragraphs below to put the boiler into
operation.
Warning
Do not put the boiler into operation if the supplied gas is not in
accordance with the approved gas types.
7.2
Gas circuit
Warning
Ensure that the boiler is disconnected from the power supply.
1. Open the main gas tap.
2. Open the gas tap under the boiler.
3. Check the gas inlet pressure at the measuring point on the gas pipe.
Warning
For authorized gas pressures, see: Unit categories, page 13
4. Vent the gas supply pipe by unscrewing the measuring point.
5. Tighten the measuring point again when the pipe has been fully
vented.
6. Check all connections for gas tightness. The test pressure may be a
maximum of 60 mbar.
7.3
Hydraulic circuit
1. Check the siphon; it should be fully filled with clean water.
2. Check the water-side connections for tightness.
7.4
Electrical connections
1. Check the electrical connections.
7.5
Commissioning procedure
Warning
Initial commissioning must be done by a qualified installer.
If adapting to another type of gas, e.g. propane, the boiler must
be adjusted before it is switched it on.
See
Adjusting to a different gas type, page 42
1. Open the main gas tap.
2. Open the boiler gas tap.
3. Switch the power on with the boiler's on/off switch.
The start-up program will start and cannot be interrupted. During the
program, all segments of the display are shown briefly.
4. At the end of the start-up program, the display will show: LG:FR (FR
flashes in the picture)
Fig.38
Gas measuring point
AD-0000121-01
Fig.39
Step 4
AD-4100151-01
7 Commissioning
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