Braemar Large Combustion Fan

This Braemar Large Combustion Fan (SY642994) is a direct replacement part designed for specific Braemar ducted gas heaters. It's a critical component for safe and efficient operation, ensuring flue gases are properly exhausted from your system.

Anyone who's been on a frosty morning call-out knows the importance of a reliable combustion fan — no noise, no heat, no happy customer. Getting it right the first time saves you the call-back.

Best For

• Maintaining Braemar THM6 ducted gas heaters.
• HVAC technicians performing heater service and repair.
• Licensed gas fitters replacing critical gas appliance components.

Compatibility

This combustion fan is specifically designed for Braemar THM6 units. It suits THM632/X models with serial numbers from T13031831 onwards. If you're running a different model, check fittings and specs before ordering.

Features

• Direct replacement for Braemar part SY642994.
• Suitable for Braemar THM6 series ducted gas heaters.
• Ensures proper exhaust of combustion byproducts.
• Critical for maintaining safe and efficient heater operation.

What's in the Box

• 1x Braemar Large Combustion Fan (SY642994)

Using It on the Job

1. Always isolate the electrical power and gas supply to the Braemar heater before commencing any work.
2. Access the combustion fan compartment, usually located within the heater cabinet.
3. Carefully disconnect the wiring harness and remove the mounting hardware securing the old fan.
4. Install the new SY642994 fan, ensuring it's correctly oriented and all mounting points are securely fastened.
5. Reconnect the electrical wiring, making sure all connections are tight and correct.
6. Reassemble any removed heater panels, restore gas and power, and perform a full functional test to confirm proper operation and no error codes.

Limitations & Safety Notes

• Installation of this component must be performed by a currently licensed gas fitter in Australia.
• Always ensure power and gas supplies are isolated and locked out before working on gas appliances.
• Verify the exact part number (SY642994 or Seeley PN: 642994) and heater model against your system before ordering and installing.
• This fan is not designed for use with other heater brands or incompatible Braemar models.
• Follow all Australian standards and Safe Work guidance during installation.

Tradie Pro Tip

When you're swapping one of these out, always give the flue and heat exchanger a quick visual check for any blockages or cracks. A clear flue means the new fan won't be working overtime, and you might spot another issue before it causes a call-back.

Pair With

Pair with other Braemar spare parts for a complete repair, or a digital manometer for accurate pressure checks during commissioning and fault diagnosis.