Ao Smith 100306570 Heating Element 18kw 480V

Product Description

The AO SMITH 100306570 is an OEM heating element designed for electric water heaters operating on 480-volt, three-phase or high-voltage commercial power systems. Rated at 18 kilowatts, this element generates the thermal output required for high-demand hot water applications. It is identified by the internal configuration code Ci15318048m and carries the ZNSTLFLG designation, indicating its material and flange construction type. Licensed plumbers and commercial water heater technicians are the primary installers of this component during scheduled maintenance or element failure replacement.

This element is suited for commercial or industrial electric water heater installations where 480-volt supply power is available. High-voltage water heater systems of this type are common in multi-unit residential buildings, light commercial facilities, laundries, and similar settings with elevated hot water demand. It is an original OEM part manufactured by AO Smith, ensuring dimensional and electrical conformance to the original equipment specification.

Key Features

• OEM replacement element manufactured by AO Smith to original equipment specification
• Rated at 18kW for high-output commercial water heating performance
• Designed for 480-volt electrical supply common in commercial installations
• ZNSTLFLG designation indicates zinc-coated steel flange construction
• Internal model code Ci15318048m confirms dimensional and electrical fitment

Compatibility

Designed as an OEM-style replacement heating element for AO Smith commercial electric water heaters requiring a 480-volt, 18kW flange-mount element configuration.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater technician in accordance with local plumbing codes. Always shut off electrical power at the breaker and close the cold water supply valve before removing the old element. Allow the tank to cool and relieve pressure before service. Verify supply voltage matches the 480-volt rating of this element before energizing the system.

Technical Specifications

• Wattage: 18kW
• Voltage: 480 volts
• Configuration Code: Ci15318048m
• Designation: ZNSTLFLG
• Part Type: Flange Heating Element

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100306570