UL 1453:2018 PDF Download

UL 1453:2018 is a standard that outlines the requirements for electric booster water heaters and electric commercial storage tank water heaters. The standard applies to heaters that are rated 600 volts or less and are intended for use in ordinary locations in accordance with the National Electrical Code. The standard covers heaters that meet certain criteria, including being over 120 gallons in capacity, rated over 12 kilowatts, or equipped with temperature-regulating controls that allow for a water temperature of more than 85°C.

These heaters are meant to be installed in accordance with model mechanical and plumbing codes. The standard also specifies that electric water heaters that do not exceed 120 gallons in capacity, are rated no more than 12 kilowatts, and have a temperature-regulating thermostat with a maximum marked dial setting of 77°C should be judged according to the requirements outlined in the Standard for Household Electric Storage Tank Water Heaters, UL 174.

It's important to note that the standard does not cover electric boilers, commercial cooking appliances, medical and dental equipment, or other electric heating equipment or appliances that have separate requirements. Additionally, electrode type boilers are not covered by the requirements of UL 1453:2018. The standard includes specific references to requirements that apply only to booster water heaters or commercial storage-tank water heaters, while requirements that apply to all the equipment covered in the standard are indicated by the absence of specific references or the use of the term "water heater" unless the context indicates otherwise.