Electric Thermostat - 90 To 150F Range, 5 To 15F Differential, Manual Reset

Rheem SP1079-005 Adjustable Electric Thermostat with Manual Reset

The Rheem SP1079-005 is an OEM upper or lower electric thermostat designed for use in residential electric water heaters. It features an adjustable temperature control dial and integrated manual reset high-limit cutoff, providing consistent thermal regulation and added safety during system operation.

This thermostat is built to control a single heating element and is constructed for compatibility with standard electric water heater designs. The SP1079-005 meets OEM standards for direct replacement and is designed to handle the electrical and thermal cycling common in electric water heating systems.

Key Features

• Temperature Control Range: Adjustable from 90°F to 150°F
• High-Limit Protection: Manual reset feature activates if operating temperature exceeds safe limits
• Mounting: Standard bracket configuration for tank wall installation
• Voltage: Compatible with 240V systems (verify per water heater model)
• OEM Grade: Rheem-specified component for factory fit and performance

Technical Specifications

• Model: SP1079-005
• Thermostat Type: Single-element control with manual reset
• Application: Residential electric tank-style water heaters
• Temperature Adjustment: External dial setting with calibrated markings
• Compliance: Meets standard electrical safety and thermal control guidelines for residential use

Installation Guidelines

Installation must be performed with power disconnected. Secure contact between the thermostat and tank wall is required for accurate temperature response. Wiring must follow the heater manufacturer’s diagram. Installation by a licensed professional is recommended to ensure compliance with code requirements and proper thermal protection.

Contractor Notes

The SP1079-005 is used in service replacements for electric water heater thermostats that require adjustable settings and thermal safety features. It is frequently paired with lower thermostats during full element and control upgrades. Always verify compatibility based on the unit's wiring configuration and voltage rating.