Bonaire Vulcan Heritage Thermocouple

When a gas heater starts dropping out, a faulty thermocouple is often the culprit. This genuine Bonaire Vulcan Heritage Thermocouple (ST0200009) is the right replacement to get those older ducted gas units in Australian homes firing safely again. I've spent enough time on roofs in winter replacing these to know a good one when I see it.

Designed as a direct fit for several popular Bonaire models, this thermocouple ensures your heater's flame proving system operates correctly, preventing gas leaks and ensuring reliable warmth when you need it most.

Best For

• HVAC service technicians replacing worn components in Bonaire gas heaters.
• Experienced DIY homeowners maintaining their Bonaire ducted heating systems.
• Parts suppliers needing reliable OEM-equivalent replacements.

Compatibility

This thermocouple is a direct replacement for Bonaire Part Number 9021879SP and SIT thermocouple 0200009. It's compatible with:

• Bonaire Burwood units
• Bonaire Quasar units
• Bonaire Heritage units

If you're running a different model, check fittings and specs before ordering.

Features

• Genuine Bonaire Part: Ensures compatibility and reliable performance in listed Bonaire units.
• SIT Thermocouple: Trusted component for accurate flame proving.
• Standard 600mm Length: Provides adequate reach for most installations within compatible models.
• 9mm Retaining Nut: Ensures a secure and correct fit to the gas valve or pilot assembly.

Technical Specifications

What's in the Box

• 1 x Bonaire Vulcan Heritage Thermocouple (ST0200009) with 600mm lead and 9mm retaining nut.

Using It on the Job

1. Before starting any work, ensure all power and gas supply to the heater unit is isolated at the main switch and gas tap. Apply lockout/tagout procedures.
2. Locate the existing thermocouple, usually at the pilot burner assembly, and carefully disconnect it, noting its routing and connection point (typically a 9mm nut on the gas valve or pilot assembly).
3. Install the new Bonaire ST0200009 thermocouple, feeding it through the correct path. Ensure the tip is correctly positioned within the pilot flame's path. Tighten the retaining nut securely to prevent leaks, but avoid overtightening.
4. Once installed, slowly restore gas and then power to the unit. Conduct a leak test on all gas connections using approved leak detection fluid.
5. Test the unit for proper ignition and flame proving. Observe the pilot flame's stability and ensure the main burner ignites and holds correctly.

Limitations & Safety Notes

• Gas appliance work must only be performed by a licensed gas fitter in accordance with Australian standards.
• Always isolate gas and power supplies before servicing any gas appliance.
• This thermocouple is only for use with the specific Bonaire models listed in the compatibility section.
• Ensure the thermocouple tip is correctly positioned in the pilot flame for reliable operation and safety cut-out.

Tradie Pro Tip: When you're replacing a thermocouple, always take a moment to clean the pilot burner and check the pilot flame's appearance. A weak or yellow pilot flame can prematurely kill your new thermocouple, so a bit of cleaning can save you a call-back.

Pair With

Complete your gas heater service kit by pairing this thermocouple with other Bonaire heating spares or a new gas valve. Consider adding some thread sealant for gas connections too.