| 摘要 |
<p>The sectional gas burner for a central heating hot water boiler is made up of elements which are rectangular in plan and hollow, with a perforated upper surface. Each element is flat, and is perfectly symmetrical about a central axis (M) which passes through the locating lug (5) each end. The underside is ribbed and along each edge is a locating flange (4). At one end are the two connection openings (1) each with a boss (2) which may be used for a securing screw or engagement by a thermostat housing.</p> |
