Slant/Fin VGH-299-CH Installation And Service Manual page 114

Rear wall insulation disk; changing procedure:
If the insulation disk has been degraded or damaged, it has to be replaced.
- be sure the heat exchanger is cooled down, wait a few hours after burning. In this way, the protective film is not
sticking anymore on the rear side of this insulation disk.
- make the insulation wet, by spraying water over it. This in order to keep airborne dust to a minimum.
- with a knife, cut a cross in the insulation
disk, avoiding the central insert
(on the back, not visible)
- make a square cut around the central insert
- remove the segments
- remove the central insert
The new disc has the clip on the back.
- do NOT remove the film on the new disc
- with the central insert on the back, place
the new insulation disk by pushing it to
the rear of the wall. A "click" means the
fitting is ok.
Replacement of burner door insulation.
Removal of the insulation:
- remove electrode
- remove the defective insulation by sliding under the
periphery of the insulation a thin tool to loosen the
insulation and remove it.
Picture 19.13
Install the new insulation:
- put two dots of glue silicone, temperature-resistant (Loctite 5366 or
Ottoseal S17), according to the location indicated.
- make sure that the burner is in proper condition, remove any possible
insulation residues on the burner
- put a plastic protection skirt around the burner to protect the insulation
from the burner.
- engage the insulation carefully and place it in contact with the two dots of
silicone glue
- remove the plastic protection skirt
- check the condition of the electrode, if necessary replace it
- reinstall electrodes- mount the burner door correctly back onto the heat
exchanger, taking in account the correct torque values, see § 19.3.1
114
Warning
Crystalline Silica – Read instructions of § 19.2 carefully
Picture 19.8
Picture 19.10
Picture 19.12
- remove and clean the residues of the insulation and silicone glue
E93.1601EN032.C VGH installation manual
Picture 19.9
Picture 19.11
Picture 19.14