Hiorucet Pilot Assembly 4021-423 Propane Gas - Instruction Manual

1. Introduction

This manual provides detailed instructions for the safe installation, operation, and maintenance of your Hiorucet 4021-423 Propane Gas Pilot Assembly. This component is designed for use with specific Heatilator, Heat N Glo, and Quadra-Fire fireplace models. Please read all instructions carefully before proceeding with installation or use.

2. Product Overview

The Hiorucet 4021-423 Pilot Assembly is a replacement part for propane gas fireplaces. It includes the pilot tube and associated wires, mounted on a bracket. This assembly is an IPI (Intermittent Pilot Ignition) type and is not compatible with DSI (Direct Spark Ignition), HSI (Hot Surface Ignition), or standing pilot units.

Figure 2.1: Detailed view of the 4021-423 Pilot Assembly, highlighting the electrode and pilot tube.

Key Components:

• Pilot Tube: Delivers gas to the pilot flame.
• Electrode: Provides the spark for ignition.
• Thermocouple/Thermopile: Generates a small electrical current to keep the gas valve open once the pilot is lit (specific to IPI systems).
• Mounting Bracket: Secures the assembly in place.

3. Compatibility

This Hiorucet 4021-423 Propane Gas Pilot Assembly replaces original part numbers 4021-026 and HHT Part # 4021-423. It is compatible with various models from Heatilator, Heat N Glo, and Quadra-Fire fireplaces. Please verify your fireplace model and existing part number for compatibility before installation.

Figure 3.1: Image showing compatible Heatilator, Heat N Glo, and Quadra-Fire fireplace models.

Compatible Models Include:

• Heatilator Fireplace Models: GCDC60i & GCDC60Li, GCDC80i & GCDC80Li, NB4236IPLUS & NB4236ILPLUS, ND3630I & ND3630IL, ND3630MI, ND3933I & ND3933IL, ND3933MI, ND4236I & ND4236IL, ND4236MI, ND4842I & ND4842IL.
• Heat-N-Glo Fireplace Models: 6000BE-IPI, 6000TRI-IPI, 6000TR-OAK-IPI, 6000TRXI-IPI, 6000TV-OAK-IPI, 6000PLUS, 8000CF-OAK-IPI, 8000TRD-IPI, 8000TR-OAK-IPI, 8000TVD-IPI, 8000TV-OAK-IPI, SOULSTICE, SL-550TRS-IPI-D, SL-750TRS-IPI-D.
• Quadra-Fire Fireplace Models: QV36A-FB (Expression).

Note: This list may not be exhaustive. Always consult your fireplace owner's manual for specific part number compatibility.

4. Safety Information

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

• Always turn off the gas supply to the appliance and disconnect electrical power before servicing.
• Ensure adequate ventilation during installation and operation.
• Do not bend the pilot tube excessively during installation, as this can cause gas leakage.
• If you smell gas, immediately shut off the gas supply, open windows, and evacuate the area. Do not operate any electrical switches or phones. Contact a qualified service technician.
• Installation and service must be performed by a qualified installer, service agency, or gas supplier.

5. Installation Instructions

Before beginning, ensure you have all necessary tools and have turned off the gas supply and electrical power to your fireplace. Refer to your fireplace's owner's manual for specific access procedures.

5.1. Pre-Installation

1. Turn off the main gas supply valve to the fireplace.
2. Disconnect the electrical power to the fireplace.
3. Allow the fireplace to cool completely if it has been in operation.
4. Carefully remove any decorative elements, logs, or glass panels to access the pilot assembly.

5.2. Removing the Old Pilot Assembly

1. Locate the existing pilot assembly within the fireplace.
2. Carefully disconnect the gas line from the pilot tube.
3. Disconnect the electrical wires (thermocouple/thermopile and igniter wires) from the control valve or ignition module. Note their positions for re-connection.
4. Unscrew or unclip the mounting bracket that holds the pilot assembly in place.
5. Remove the old pilot assembly.

5.3. Installing the New Pilot Assembly

1. Position the new Hiorucet 4021-423 Pilot Assembly in the same location as the old one.
2. Secure the mounting bracket using the appropriate screws or clips.
3. Connect the gas line to the pilot tube. Ensure a tight, leak-free connection.
4. Connect the electrical wires (thermocouple/thermopile and igniter wires) to their corresponding terminals on the control valve or ignition module. Refer to your fireplace's wiring diagram if unsure.
5. Ensure all connections are secure and wires are routed away from hot surfaces.

5.4. Post-Installation Checks

1. Turn on the main gas supply valve.
2. Check all gas connections for leaks using a soap and water solution. Bubbles indicate a leak. If a leak is detected, turn off the gas, tighten the connection, and re-test.
3. Restore electrical power to the fireplace.
4. Test the pilot ignition and main burner operation according to your fireplace's operating instructions.
5. Reinstall any removed decorative elements, logs, or glass panels.

6. Operating Instructions

This pilot assembly is part of an IPI (Intermittent Pilot Ignition) system. The pilot will only ignite when there is a call for heat, typically initiated by a wall switch or remote control. It does not remain continuously lit.

1. Ensure the gas supply is on and electrical power is connected.
2. Activate your fireplace using its designated control (wall switch, remote, or control panel).
3. The igniter will spark, lighting the pilot flame.
4. Once the pilot flame is established and heats the thermopile/thermocouple, the main burner will ignite.
5. If the main burner does not light, refer to the Troubleshooting section.

Figure 6.1: Illustration of the IPI Pilot Assembly with a lit pilot flame, indicating proper function.

7. Maintenance

Regular maintenance helps ensure the safe and efficient operation of your pilot assembly and fireplace.

• Annual Inspection: It is recommended to have a qualified service technician inspect your fireplace and pilot assembly annually.
• Cleaning: Periodically inspect the pilot assembly for dust, lint, or debris. Gently clean with a soft brush or compressed air if necessary. Ensure the pilot flame opening is clear.
• Pilot Flame Check: Observe the pilot flame when it ignites. It should be a strong, steady blue flame enveloping the thermocouple/thermopile. A weak, yellow, or wavering flame may indicate an issue.
• Gas Leaks: Regularly check gas connections for leaks using a soap and water solution.

CAUTION: Always turn off the gas supply and electrical power before performing any cleaning or inspection.

8. Troubleshooting

If your fireplace is not operating correctly, consult the following table for common issues and solutions. If the problem persists, contact a qualified service technician.

9. Specifications

• Model: 4021-423
• Fuel Type: Propane Gas (LP) ONLY
• Assembly Type: IPI (Intermittent Pilot Ignition)
• Replaces Part Numbers: 4021-026, HHT Part # 4021-423
• Manufacturer: Hiorucet
• Item Weight: 2.89 ounces
• Package Dimensions: 7.83 x 4.76 x 1.89 inches

10. Warranty and Support

This Hiorucet Pilot Assembly comes with a 1-year quality assurance. For technical support, warranty claims, or further assistance, please contact Hiorucet customer service through your purchase platform or the official Hiorucet website.