Rheem Gas Furnace Parts Manual

The Rheem Gas Furnace Parts Manual provides comprehensive information on replacement parts, components, and maintenance procedures for Rheem gas furnace systems. This manual covers part identification, ordering procedures, compatibility charts, installation guidelines, and troubleshooting for various Rheem furnace models. Below are key sections for parts identification, ordering, installation, maintenance, and technical specifications.

1. Parts Identification 2. Ordering Procedures 3. Installation Guidelines 4. Technical Specifications 5. Maintenance Procedures 6. Safety Components 7. Control Systems 8. Heat Exchanger Parts 9. Blower Assembly 10. Gas Valve Components 11. Troubleshooting

Parts Identification

Key components: Gas valve assembly, heat exchanger, blower motor, control board, igniter, flame sensor, pressure switches, thermocouple, limit switches.

Component	Description
Gas Valve Assembly	Regulates gas flow to burners
Heat Exchanger	Transfers heat from combustion to air
Blower Motor	Circulates air through system
Control Board	Main system controller and processor
Igniter	Hot surface igniter for gas ignition
Flame Sensor	Detects burner flame presence
Pressure Switches	Monitor draft and air pressure
Thermocouple	Safety device for pilot systems
Limit Switches	Prevent overheating conditions
Inducer Motor	Creates draft for combustion gases

Ordering Procedures

Follow these steps to order replacement parts for your Rheem gas furnace.

Identify furnace model number: Located on rating plate inside furnace cabinet.
Note part number: Reference parts list for correct replacement part number.
Contact authorized dealer: Provide model and part numbers for verification.
Verify compatibility: Ensure parts match your specific furnace model.

WARNING! Use only genuine Rheem replacement parts to maintain safety and warranty coverage.

Installation Guidelines

Proper installation ensures safe and efficient furnace operation.

Disconnect power: Turn off electrical power at circuit breaker.
Shut off gas supply: Close main gas valve before beginning work.
Remove old component: Follow disassembly procedures carefully.
Install new part: Use proper tools and follow torque specifications.
Test operation: Verify proper function before restoring access.

CAUTION! Installation should be performed by qualified HVAC technicians only.

Technical Specifications

Gas Type: Natural gas or propane (model specific)
Input Capacity: 40,000 to 150,000 BTU/hr
Efficiency: 80% to 98% AFUE
Voltage: 120V AC, 60Hz
Motor Type: PSC or ECM blower motor
Heat Exchanger: aluminized steel or stainless steel
Pressure Rating: 3.5" WC natural gas, 11" WC propane
Operating Temp: -30°F to 120°F ambient

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Annual Maintenance: Filter replacement, burner inspection, heat exchanger examination, blower cleaning, safety check.

Filter: Replace every 1-3 months. Burners: Clean annually. Blower: Clean and lubricate as needed. Heat Exchanger: Inspect for cracks annually. Safety Devices: Test limit switches and pressure controls.

Safety Components

Critical safety devices that require regular inspection and testing.

Flame Rollout Switches: Detect improper burner flame
High Limit Switches: Prevent overheating conditions
Pressure Switches: Ensure proper venting operation
Flame Sensor: Confirms burner ignition
Gas Valve: Regulates and shuts off gas supply

Tip: Test safety devices annually to ensure proper operation.

Control Systems

Electronic controls manage furnace operation and safety functions.

Main Control Board: Central processing unit
Thermostat Interface: Communicates with room thermostat
Ignition Control: Manages ignition sequence
Blower Control: Regulates air circulation
Diagnostic LEDs: Provide error code information
Pressure Switch Inputs: Monitor vent system
Limit Circuit: Overheat protection
Gas Valve Control: Manages gas flow

WARNING! Control board replacement requires proper programming and setup.

Heat Exchanger Parts

Heat exchanger components critical for efficient heat transfer.

Part	Function
Primary HX	Main heat transfer surface
Secondary HX	Condensing models only
Collector Box	Directs combustion gases
Flue Outlet	Vent connection point
HX Tubes	Tube-type heat exchangers

Blower Assembly

Air circulation components for proper airflow and distribution.

Blower Motor: PSC or ECM type
Blower Wheel: Squirrel cage design
Motor Mount: Vibration isolation
Blower Housing: Air direction and containment
Motor Capacitor: Start/run capacitor
Speed Control: Multi-speed operation

CAUTION! Ensure proper blower rotation and airflow direction during installation.

Gas Valve Components

Gas regulation and safety components for proper fuel delivery.

Main Valve: Primary gas flow control
Pressure Regulator: Maintains proper gas pressure
Solenoid Valves: Electric gas shutoff
Manual Shutoff: Emergency gas closure
Pressure Ports: Test and adjustment points
Gas Type Conversion: Natural gas to propane kits

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety lockout	Check power supply; verify thermostat setting; reset safety devices.
No heat	Gas supply, igniter, flame sensor	Verify gas valve open; check igniter operation; clean flame sensor.
Short cycling	Dirty filter, limit switch, airflow	Replace air filter; check limit switch; verify proper airflow.
Blower not working	Motor, capacitor, control board	Test motor windings; check capacitor; verify control signals.
Gas valve not opening	Power, solenoid, pressure	Check valve voltage; test solenoids; verify gas pressure.

Reset: Power cycle furnace at circuit breaker if lockout occurs.

Service: 1-800-432-8373; www.rheem.com