Gas Control Thermostat for Liquid Propane Systems.

Rheem SP20233 – LP Gas Control Thermostat for Residential Water Heaters

The Rheem SP20233 is a liquid propane gas control thermostat specifically designed for use in compatible Rheem residential water heaters. It regulates burner function by controlling gas flow based on the set water temperature, ensuring safe and consistent operation. The unit includes integrated safety controls to prevent overheating and manage system shutoff when necessary.

Application Overview

This control is used as a replacement part for LP-fueled water heaters where precise temperature regulation and system safety are required. It is a direct OEM component designed for tank-style residential units and must be matched with the appropriate Rheem model to ensure correct operation.

Product Specifications

• Part Number: SP20233
• Fuel Type: Liquid Propane (LP)
• Voltage: 120V
• Gas Inlet Connection: 1/2" NPT
• Inlet Pressure: Rated for 10" WC LP gas
• Temperature Adjustment: Front-facing dial for manual setpoint selection

Installation Notes

The SP20233 is designed for direct-mount installation to the water heater tank. Installation should be completed by a licensed plumber or qualified HVAC technician. All gas connections must be leak-tested, and the water heater must be checked for proper ignition and flame characteristics after installation. This model is not convertible for use with natural gas.

Installation Requirements

• Mounting: Direct thread-in connection to the control port on compatible Rheem models
• Tools Required: Pipe wrench, thread sealant, leak detection solution
• Testing: Verify burner operation, temperature control, and safety shutoff

Key Functional Features

• Mechanical Thermostat: Manual temperature adjustment with integrated gas valve
• Integrated Safety: Includes high-temperature limit control and shutoff mechanism
• Service Use: OEM replacement part for Rheem propane units
• System Protection: Designed to maintain stable water temperatures and prevent unsafe operating conditions

Contractor Considerations

The SP20233 is a purpose-built component intended for use with specific Rheem water heater models that operate on LP gas. It should not be substituted across other systems without verifying model compatibility and input requirements. When replacing this component, ensure the water heater is powered down and that gas flow is shut off and purged prior to removal and installation.