1. Introduction
This manual provides essential information for the safe and effective use of the Duke 166009 IRHS 4 Wide Heater. This product is a genuine OEM (Original Equipment Manufacturer) replacement part designed for commercial foodservice equipment. Please read this manual thoroughly before installation or operation.
2. Safety Information
Adherence to the following safety guidelines is crucial to prevent injury and damage to the equipment. This heater operates at 208V and 300W, requiring proper electrical installation.
- Electrical Hazard: Installation and servicing must be performed by qualified personnel only. Disconnect power before installing or servicing this heater.
- Burn Hazard: The heater surface will become hot during operation. Allow sufficient time for cooling before handling.
- Proper Use: This heater is designed as a replacement part for specific Duke commercial foodservice equipment. Do not use it for purposes other than its intended application.
- Genuine Parts: Always use genuine OEM parts for safety, reliability, and performance.
- Ventilation: Ensure adequate ventilation around the heater as specified by the original equipment manufacturer's instructions.
3. Product Overview
The Duke 166009 IRHS 4 Wide Heater is an infrared radiant heating element. It is designed to provide consistent heat within commercial foodservice applications, such as product holding equipment or steamtables. Its construction allows for efficient heat distribution.

Figure 3.1: Duke 166009 IRHS 4 Wide Heater. This image shows the flexible, foil-like heating element with its electrical connections.
Key features include:
- Genuine OEM replacement part for Duke equipment.
- Designed for commercial foodservice industry applications.
- Ensures safety, reliability, and performance when used as intended.
4. Setup and Installation
Installation of the Duke 166009 IRHS 4 Wide Heater should only be performed by a qualified service technician. Refer to the specific equipment's service manual for detailed installation instructions.
- Power Disconnection: Ensure the main power supply to the equipment is completely disconnected and locked out before beginning any installation work.
- Access: Gain access to the heater compartment within the equipment as per the original equipment's service manual.
- Removal of Old Heater: Carefully disconnect the wiring from the old heater and remove it. Note the orientation and connection points.
- Installation of New Heater: Position the new Duke 166009 heater in the designated location. Ensure it is securely mounted and properly aligned.
- Wiring Connections: Connect the electrical wiring to the new heater, ensuring all connections are secure and match the original configuration. Verify correct voltage (208V) and wattage (300W) compatibility.
- Reassembly: Reassemble the equipment, ensuring all covers and panels are correctly replaced and secured.
- Testing: Restore power to the equipment and test the heater's functionality according to the equipment's operational guidelines.
5. Operating Instructions
As a component part, the Duke 166009 IRHS 4 Wide Heater operates as part of a larger system. Refer to the operating manual of the specific Duke commercial foodservice equipment in which this heater is installed for detailed operational procedures.
- Power On/Off: The heater's operation is typically controlled by the main power switch or thermostat of the equipment it is integrated into.
- Temperature Control: Temperature settings are managed via the equipment's control panel.
- Monitoring: Regularly monitor the equipment's performance to ensure the heater is functioning correctly and maintaining desired temperatures.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of the heater and the equipment it serves. Always disconnect power before performing any maintenance.
- Cleaning: Periodically inspect the heater surface for any accumulation of debris or food particles. Clean gently with a soft, dry cloth. Do not use abrasive cleaners or immerse the heater in liquids.
- Inspection: Routinely check electrical connections for tightness and signs of wear or damage. Inspect the heater element for any visible damage or discoloration.
- Professional Servicing: For any complex issues or suspected malfunctions, contact a qualified service technician.
7. Troubleshooting
If the heater is not functioning as expected, consider the following common issues. For complex problems, consult a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater not heating | No power to equipment; Faulty wiring connection; Heater element failure; Thermostat issue in main equipment. | Check equipment's power supply and circuit breaker. Verify wiring connections. If heater element is faulty, replace with genuine OEM part. Consult equipment manual for thermostat troubleshooting. |
| Inconsistent heating | Loose connections; Partial element failure; Control issue in main equipment. | Inspect and tighten all electrical connections. If element is partially damaged, replacement is recommended. Refer to equipment manual for control system diagnostics. |
| Unusual odors or smoke | Accumulated debris on heater; Electrical short; Overheating. | Immediately disconnect power. Allow to cool. Clean heater surface. If problem persists or is severe, do not operate and contact a qualified technician immediately. |
8. Specifications
The following are the technical specifications for the Duke 166009 IRHS 4 Wide Heater:
- Model Number: 166009
- Type: IRHS 4 Wide Heater
- Power: 300W
- Voltage: 208V
- Manufacturer: Duke
- Package Dimensions: 14 x 12 x 7 inches
- Weight: Approximately 6.4 ounces
- Country of Origin: United States
- ASIN: B00NG5PXFI
- Date First Available: September 11, 2014
9. Warranty and Support
The Duke 166009 IRHS 4 Wide Heater is a genuine OEM replacement part. For specific warranty information pertaining to this component or the equipment it is installed in, please refer to the documentation provided with your original Duke equipment or contact Duke Manufacturing directly. Using genuine OEM parts ensures continued safety, reliability, and performance of your equipment.
For technical support or to inquire about genuine replacement parts, please visit the official Duke Manufacturing website or contact their customer service department.
Note: This manual is for informational purposes and does not supersede the specific service and operational manuals of the equipment in which this heater is installed.