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The LOCHINVAR L100148402 is a heat exchanger over temperature limit device designed to protect the heat exchanger in high-efficiency commercial water heating systems. This safety control monitors heat exchanger temperature and interrupts operation when temperatures exceed a safe threshold, preventing equipment damage and potential hazards. It is a direct OEM replacement component installed by licensed plumbers and HVAC technicians during routine service or corrective maintenance on commercial water heater systems.
This over temperature limit is specified for use with the LOCHINVAR SHIELD Model SNA286-501 water heater. It is suited for commercial hot water applications where reliable thermal protection is essential to system longevity and safe operation. Technicians performing service on the SNA286-501 unit should verify this part number against the equipment's service documentation before installation.
Designed for use with the LOCHINVAR SHIELD Model SNA286-501 water heater.
Installation should be performed by a licensed plumber or qualified HVAC service technician. Before servicing, shut off power to the water heater and allow the unit to cool completely. Follow the manufacturer's service documentation and applicable local codes when replacing safety limit devices. Do not bypass or jumper the limit control at any time.
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