Hangers and brackets supporting unit heaters

Hangers and brackets supporting unit heaters

• A. shall be of noncombustible material
• B. shall be supplied by the manufacturer
• C. shall be constructed of either stainless steel or zinc-coated sheet metal
• D. shall be constructed of material referenced in ASTM (A53-97b)

Answer: (A)

The essential idea is that supports for unit heaters must be made from noncombustible material. This prevents the hangers or brackets from contributing fuel or flame or deforming under heat, helping to maintain fire safety and structural integrity in the space where the heater is installed. Noncombustible materials—like metal hardware designed to resist heat—are required so the support remains stable and does not become a fire hazard. That’s why this is the best choice: it sets a broad, safety-focused standard for the hardware that bears the unit heater’s weight, rather than tying the requirement to a specific supplier, a narrow set of materials, or a particular ASTM standard.

The essential idea is that supports for unit heaters must be made from noncombustible material. This prevents the hangers or brackets from contributing fuel or flame or deforming under heat, helping to maintain fire safety and structural integrity in the space where the heater is installed. Noncombustible materials—like metal hardware designed to resist heat—are required so the support remains stable and does not become a fire hazard.

That’s why this is the best choice: it sets a broad, safety-focused standard for the hardware that bears the unit heater’s weight, rather than tying the requirement to a specific supplier, a narrow set of materials, or a particular ASTM standard.