Rheem SP11798B is the Rheem Manufacturing 100 to 180 Deg F Adjustment, 5 Deg F Differential, 255 PSI, 39-1/4" L Capillary Tube, 192 Deg F High Limit, 85 Deg F High Limit Differential, Thermostat with (1) Box/(1) Instruction Sheet/(1) 4" x 4" Aqua PROTECH Preprinted Label for Water Heater.
It is a surface-mount thermostat for Rheem electric water heaters. It senses tank temperature and switches the heating elements on and off, and replacing a faulty unit is a common fix for no hot water or overheating complaints.
Check the adjustment range, differential and switch configuration against the original thermostat. Disconnect power before service, make sure the thermostat sits flat against the tank, and set the temperature to a safe level for the household.
Specifications
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Brand: Rheem Manufacturing
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Manufacturer Part #: SP11798B
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Pressure Rating: 255 PSI
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Adjustment Range: 100 to 180 Deg F
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Differential: 5 Deg F
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High Limit: 192 Deg F
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UPC: 020352385945
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Category: Controls, Switches & Sensors
See also: Rheem Manufacturing, Controls, Switches & Sensors, Water Heating.