Convotherm OEB Series Service Handbook page 189

Service Handbook OGB/OGS
Attention: The gas supply may not have any kinks
4. Remove burner insert 6

Remove the aluminium tape from the insulation in the area of the convection
burner insert 6 (When removing the steam generator burner insert, this is not
necessary).

Push the insulation carefully aside (possibly using the cutter).

Unscrew the nut 7 on the flange.

Carefully remove the burner insert 6.
Replacing (Step-by-step Instructions)
Instructions:
1. Check the burner insert before installing.

Check the heat electrode electrical circuit.

Check that there are no hairs (from the burner sock) between the burner and
the monitoring electrode.

The cable of the ionisations electrode must not touch the burner. Make sure
that for convection burner a distance of 2 cm between cable and burner tube
is ensured. On steam generator burners, this is not necessary.
2. Install in reversed order.

Install the burner in reversed order step-by-step. (see removing instructions).
Attention: Always use new seals  13, 14, 15
Assembly advice:

Coat all the nuts with copper paste before installation.

Don't forget to reinstall the restriction flange 10 and two seals 13 between
burner fan and the burner insert.
3. Test

Turn on the gas supply.

Switch on the power supply.

Test all connections for tightness (Gas detector or leak spray)

Start unit operation

After removing and replacing the burner, check the gas exhaust values (CO
less than 1000 ppm, CO
Handbook 6.25)

When the burner is running check all connections for tightness (Gas detector
or leak spray): now you can check the connections on the blower 4 and
burner insert 6!
AS/11-2011 Item 7016475
8% to 11% depending on gas type  see Service
2
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