🔧 Burnham 8236024 30" Thermocouple – Honeywell Q309A1988

🧭 Product Overview

The Burnham 8236024 Thermocouple is an OEM replacement part built for Burnham IN Series 2 Gas Boilers.
It features a 30-inch lead and incorporates the reliable Honeywell Q309A1988 thermocouple design, ensuring accurate flame sensing and safe pilot operation.

This thermocouple detects the presence of the pilot flame and keeps the gas valve open for safe, consistent boiler operation. If the flame goes out, the thermocouple signals the valve to close, preventing unsafe conditions.

✅ Key Features

• ✅ OEM Burnham replacement part for IN Series 2 boilers

• ✅ Honeywell Q309A1988 thermocouple for proven reliability

• ✅ Ensures safe and accurate pilot flame detection

• ✅ 30-inch lead allows flexible installation

• ✅ Easy connection with standard threaded fittings

• ✅ Built to OEM specifications for durability and precision

📊 Technical Specifications

🔄 Cross Reference

• Burnham: 8236024

• Honeywell: Q309A1988

⚠️ Compatibility

• Designed for Burnham IN Series 2 Boilers

• May also fit other gas heating systems using the Honeywell Q309A1988 thermocouple (verify before ordering)

🧯 Common Symptoms of a Faulty Thermocouple

• Pilot light won’t stay lit

• Boiler shuts down intermittently

• Weak or unstable pilot flame

• No heat even after multiple relight attempts

💡 Shopping Tips

• Always verify your model and part number before ordering

• Replace thermocouples during annual maintenance for best performance

• If the pilot light continues to go out, check gas pressure and flame strength

❓ Frequently Asked Questions (FAQ)

Q: How do I know if my thermocouple is bad?

• If your pilot light won’t stay lit or your boiler shuts down frequently, the thermocouple may be faulty. Test with a multimeter for millivolt output (typically 25–30 mV).

Q: Can I replace this thermocouple myself?

• ✅ Yes. Make sure the gas is turned off, remove the old thermocouple, and install the new 8236024 securely into the pilot assembly.

Q: Does the lead length matter?

• Yes, this part has a 30-inch lead, which provides flexibility to reach the gas valve without straining the wire.

Q: Is this part compatible with other boilers?

• It is designed for Burnham IN Series 2 boilers, but may fit other systems using the Honeywell Q309A1988 thermocouple. Always verify compatibility before ordering.

Q: How often should I replace my thermocouple?

• Typically every 3–5 years, or sooner if the pilot flame is weak, intermittent, or the thermocouple shows visible wear or corrosion.