Final Check; Gastightness; Gas Pressure / Pre-Pressure; Ignition Pilot And Main Burner - Dru Metro 100 Tunnel Installationsanleitung

M E T R O 1 00 - I N S TA L L AT I O N M A N UA L
8.

Final check

In order to check whether the appliance is working properly and safely, you must perform the following checks
before the appliance is used.

8.1 Gastightness

All connections must be gastight.
Caution
!Caution The gas control can be subjected to a maximum pressure of 50 mbar.
➠
Check the connections for gastightness.

8.2 Gas pressure / pre-pressure

The burner pressure is set at the factory; see data plate. It is not necessary to check the burner pressure.
Caution The pre-pressure in house installations should be checked, as they can vary.
➠
Check the pre-pressure; see fi g. 21 for the measuring nipple on the gas control.
➠
Contact the gas company if the pre-pressure is not correct.

8.3 Ignition pilot and main burner

For igniting the pilot and main burners, see the User Manual, chapter 4, section 4.2, Remote Control.
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 burner has gone out, before you re-ignite the appliance.
- Do not turn the pilot burner lower by using the settings on the gas control.
8.3.1 Pilot burner
➠
Check the ignition of the pilot burn er:
- the pilot burner should start at the fi rst attempt.
If the pilot burner does not ignite:
➠
check if the ignition sparks:
a) If not, the ignition cable is probably not lying free from metal parts;
b) If it does, there is probably still air in the pipe.
➠
Bleed the pipe and/or
➠
Lay the ignition cable free from metal parts.
8.3.2 Main burner
Caution The burner should ignite smoothly and should not pop as a result of delayed ignition.
➠
Check the function of the main burner from the standby (pilot burner) position:
- after opening the gas valve, the main burner should burn within a few seconds.
When the gas valve is opened, the motor will run; this is audible.
!Tip
If the main burner does not burn:
➠
Check if button A on the gas control is in the position ON;
➠
Check if the space surrounding the pilot burner is free from objects;
➠
Check the placement of the wood/pebble set.
➠
If necessary, correct the abovementioned faults.
➠
Test the main burner 5x for a good operation.

8.4 Flame image

The fl ame image can only really be assessed when the appliance has been burning for several hours. Volatile compo-
nents from paint, materials, etc., which evaporate in the fi rst hours, will aff ect the fl ame image.
!Caution If the chimney breast is made of stone-like materials or has a plaster fi nish, this may only take place 6 weeks after pla-
cing the chimney breast, in order to prevent shrinkage cracks.
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