Pt. 25, App. F

14 CFR Ch. I (1-1-19 Edition)

temperatures up to 1300 SectionF (704 SectionC). An air
propane panel must be made of a porous refractory material and have a radiation surface of 12 by 18 inches (305 by 457 mm). The
panel must be capable of operating at temperatures up to 1,500 SectionF (816 SectionC). See figures 3a
and 3b.

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spaschal on DSK3GDR082PROD with CFR

(2) Radiant heat source. Mount the radiant
heat energy source in a cast iron frame or
equivalent. An electric panel must have six,
3-inch wide emitter strips. The emitter strips
must be perpendicular to the length of the
panel. The panel must have a radiation surface of 127-8 by 181-2 inches (327 by 470 mm).
The panel must be capable of operating at