CSA ANSI Z83.20a-2003/CSA 2.34a-2003

Details test and examination criteria for gas-fired low-intensity infrared and infrared radiant tube heaters,with inputs up to 40,000 Btu /hr per burner for use with natural,manufactured ,mixed and liquefied petroleum(propane) gases and may be convertible for use with natural and LP-gases. Applies to heaters for installation in and heating of outdoor spaces or nonresidential indoor spaces where flammable gases or vapors are not generally present.