Bottom Shields are approved for all burner sizes. The below clearance (dimension C in Clearance Tables) may be reduced by 25% when an approved Bottom Shield is used.
Reduced clearances downstream from the burner are approved for all configurations. Dimensions B, C, and D in the Clearance Tables can be reduced for locations 25’ (7.6 m) or more downstream from a burner, the maximum reduction is 50%.
Please note: The stated minimum clearance to combustibles represents a surface temperature of 90°F (50°C) above room temperature. Building materials with low heat tolerance (i.e. plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures.
Where to find more information?
On the clearance to combustibles chart in the product manuals
You can easily access all our product manuals by visiting this link. Once there, you’ll have the option to narrow down your search by applying filters based on either the Heater Type or the Series. This way, you can quickly locate the specific manual you’re looking for.