Dru G31 Propane Instructions For Installation Manual Download Page 12

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8.3.1 First ignition of the appliance after installation or adjustments

!Caution

After installation, or after work has been performed, you should ignite the appliance for the first time without the glass

window. If necessary, bleed the gas pipe.

Follow the procedure described below:

➠

If required, remove the glass window;

➠

Start the ignition procedure according to chapter 4 in the User Manual;

➠

If the pilot flame does not ignite:
- repeat the ignition procedure until the pilot burner ignites;
- consult the malfunction search diagram (Chapter 11) if this does not happen after a few attempts;

➠

After igniting the pilot flame, the main burner will ignite during the ignition procedure;

➠

Check whether the main burner continues to burn;

➠

If the main burner does not continue to burn:
- repeat the ignition procedure until the main burner continues to burn
- consult the malfunction search diagram (Chapter 11) if this does not happen after a few attempts;

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Switch off the appliance;

➠

Then mount the glass window as described in chapter 6.9;

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Repeat the ignition procedure a few times and perform the checks described in chapter 8.3.2;

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From now on, the pilot flame should ignite smoothly.

!Caution

- During the ignition process, you are not allowed to operate control button B on the gas control manually.

- Always wait 5 minutes after the pilot flame has gone out, before you re-ignite the appliance.
- You are not allowed to turn the pilot flame lower by using the settings on the gas control.

8.3.2 Main burner

!Caution

- The pilot burner should ignite the main burner within a couple of seconds, and without popping.

- The main burner(s) must cross the full burner smoothly and without popping and continue to burn.

➠

Check operation of the main burner from a cold condition (pilot flame off):

➠

After opening the gas valve, the main burner should burn within a few seconds.

!Tip

When the gas valve is opened, the motor will start to run; this is audible.
The flame picture and a good flame transfer can only be properly judged if the glass window is installed.

Use the malfunction search diagram (Chapter 11) if the ignition of the main burner does not comply with the abo-
vementioned requirements.

8.4 Flame picture

The flame picture can only really be assessed when the appliance has been burning for several hours. Volatile com-
ponents from paint, materials, etc., which evaporate in the first hours, will affect the flame picture.

➠

Check whether the flame picture is acceptable.

➠

Consult the malfunction search diagram (Chapter 11) if the flame picture is not acceptable.

9. Maintenance

Once a year the appliance should be checked, cleaned and, if necessary, repaired by a competent installer in the field
of atmospheric gas heating.
Check at least whether the appliance is working properly and safely.

Caution

- Close the gas tap when performing maintenance work;

- Check the gastightness after repair;
- After replacing the thermocouple you should first tighten the swivel of the gas control block by hand and then give

it another quarter turn with a suitable spanner.

➠

If required, clean the following components:
-   the pilot flame burner;
-   the combustion room;
-   the  panes.

!Caution

- Remove/place the front pane as described in section 6.9;

-   Remove the deposit on the inside of the pane with a damp cloth or a non-abrasive detergent such as copper polish;
-   Avoid/remove fingerprints on the pane, as they will burn into the glass;
-   Replace a torn or broken pane as described in section 6.9.