UL 1598 CRD:2020 free download

UL 1598 CRD:2020 free download UNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISION
SM1.7 Equipment that emits electromagnetic energy with wavelengths greater than 780 nm or less than200 nm are not addressed by this annex,and may require an additional evaluation.
SM1.8 All requirements in the main body of this standard also apply to this equipment unless specificallysuperseded by a requirement in this annex.
SM1.9 In this annex, the CSA standard reference applies to products intended for use in Canada, whilethe UL standard reference applies to products intended for use in the United States. Combined
references are commonly separated by a slash (” i “).
SM2 Glossary
EMITTER (ASSEMBLY) – The equipment that produces the light or UV radiation used to treat the space.QUALIFIED SERVICE PERSON – An individual charged to repair the germicidal system.The qualifiedservice person may also manage the routine maintenance of the system.
ULTRAVIOLET (UV)RADIATION – Electromagnetic energy with a wavelength of 200 – 400 nm.
cONSTRUGTION
sM3 General
SM3.1 Emitters shall comply with all construction and test requirements in the main body of this standardapplicable to the installation method and environmental location for which it is marked and intended.
Equipment that uses low-pressure mercury-vapor discharge lamps shall comply with the requirementsapplicable to fluorescent luminaires.
SM3.2 Emitters shall be designed to be permanently mounted in a fixed location,such that it cannot beunmounted or relocated without the use of tools.
SM3.3 Emitters not intended to be adjusted by the end-user shall be designed such that it is not possibleto re-orient or refocus the emitter without the use of tools.
PROTECTION AGAINST INJURY TO PERSONS
SM4 Photobiological Assessment
SM4.1 Emitters shall be subjected to a photobiological assessment across the UV and visible wavelengthrange from 200 nm through 780 nm in accordance with the requirements in CAN/CSA-C22.2 No.62471(in Canada) or lEC 62471(in the United States). This assessment shall be used to determine the riskgroup of the equipment.
SM4.2 This assessment shall be conducted using a measurement distance from the radiation source of200 mm (8 in) in the direction likely to produce the most severe test result.
SM4.3 The equipment shall be adjusted and operated to produce the most severe test result permitted byits construction and installation instructions.
SM4.4 For equipment with sources that emit radiation at wavelengths shorter than 400 nm, an additionalreference irradiance measurement shall be taken at a distance of 500 mm (18.3 in) from the equipment’s radiation source in the direction that produces the highest value. This peak emission value is not used for the risk group assessment, but shall be provided to the installer in accordance with SM7.6.