For tight chamber boilers, the possibility to view the flame during boiler's operation is a must.
This is made possible by using a glass allowing to see the flame and at the same time preventing air to pass through.
The subject solution allows to fix the glass to the air box cover, by using a high temperature resistant silicone.
On all tight chamber boiler, the possibility to view the flame during boiler's operation is a must. This is obtained with a hole on the cover of the combustion chamber.
Since the boilers in question are of the tight chamber type, i.e. they are quipped with flue gases suction fan, no air should be allowed through said hole; actually, this would alter combustion.
This objective is reached through the use of a glass enabling to view the flame, but preventing air to pass through.
At present the glass in question has a diameter of 3.3 mm and is fixed to the cover of the combustion chamber by a ring nut, a gasket and three screws (see figure 1).
This new application provides for a change of the glass fixing system and of its position on the cover of the air box.
Therefore we propose to paste the glass in question with a high temperature resistant silicone. (see figure 2)
Fixing the glass with silicone enables to optimize the assembling process of the combustion chamber cover, by reducing the number of required component parts. This results into reduced assembling times.
Purpose of this solution is to protect the new fixing method of the burner's flame inspection glass, using high temperature resistant silicone.