Dru 0063CT3681, Installation Manual

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10. Final check
For a good and safe operation of the appliance, the following checks must be performed prior to commissioning.
10.1 Gas tightness
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All connections must be gas tight. Check the connections for gas tightness. The gas control can be subjected to a
maximum pressure of 50 mbar.
10.2 Gas pressure/line-pressure
The burner pressure is set at the factory; see data plate.
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The line-pressure in domestic systems must be checked, because it can be incorrect.
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Check the line-pressure. See fig. 6-1 (P1) for the measuring nipple on the gas control.
- Contact the gas company if the line-pressure is too high.
- If the line-pressure is too low, check this at the gas meter. Contact the gas company if the line-pressure is also too low
at the gas meter.
10.3 Ignition main burner
For igniting the main burner, see the user manual.
10.3.1 First ignition of the appliance after installation or adjustments
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After installation or after work has been performed, keep a safe distance when igniting the appliance for the first time. If
gas accumulation has occurred and the gas is ignited, it should be possible for the overpressure to leave the combustion
chamber. The pressure will partly open the door so that the pressure can escape.
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Make sure the glass pane is clean, because dirt will burn into the glass.
Proceed as follows:
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1. Always keep a safe distance.
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2. Start the ignition procedure as described in the User Manual.
The appliance ignites on the main burner with 50% of the full output. Once the main burner has been fully ignited (full
flame transfer), the ionization detects flame and the appliance will modulate to 100%. This detection should take place
within 15 seconds, otherwise the appliance will enter the malfunction mode. If the appliance has a second separately
switchable burner and the main burner continues to burn, the second valve will switch to ignite the second burner. In
this case you can hear a clear ‘click’ sound.
If the main burner DOES ignite:
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3. Check the flame transfer on the main burner and check that the main burner continues to burn (go to step 8 if the
burner continues to burn and to step 6 if the appliance does NOT continue to burn).
If the main burner does NOT ignite:
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4. Reset the system by pressing the buttons ‘arrow up’ and ‘arrow down’ simultaneously.
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The system can be reset and re-ignited maximum twice in a row. After that the system enters a hard lock-out and you
must wait half an hour before a new attempt can be made. Never make more than 3 attempts to ignite, as this could lead
to a dangerous accumulation of gas in the appliance. Make sure there is no more gas in the appliance, before 3 new
ignition attempts are made.
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5.Repeat the ignition procedure until the main burner ignites. If ignition is not successful after a few attempts, this
indicates a malfunction (see appendix 1: Malfunctions). Go to step 1 after the malfunction has been resolved.
If the main burner does NOT continue to burn:
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6. Switch off the appliance.
7. Consult the diagram with error messages (see appendix 1: Malfunctions). Go to step 1 after the malfunction has been
resolved.
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