Braemar 110 Deg Auto Reset Overtemp Switch HX OT1

This Braemar Overtemp Switch is a crucial safety component designed for ducted gas heaters, offering peace of mind by preventing your unit from overheating. It's an automatic reset type, tripping at 110°C to safeguard the heat exchanger and other vital components.

On a scorching Aussie summer day, even if your heater's off-season, you want to be sure its safety gear is in top nick for when you do need it. This part helps keep your heating system running safely and stops it from cooking itself if there's an airflow issue or fan failure.

Best For

• HVAC technicians and gas fitters
• Ducted gas heater service and maintenance teams
• Competent DIY owners replacing a failed switch on compatible Braemar or Seeley units

Compatibility

This overtemp switch is purpose-built for Braemar ducted gas heaters, providing a reliable 110°C trip point. It's an auto-reset type, so it doesn't need manual intervention once the temperature drops. The part number SY632605 is also cross-referenced as Seeley PN: 632605, indicating potential compatibility with certain Seeley models.

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

Features

• Designed specifically for Braemar ducted gas heating systems.
• Trips automatically at 110°C to prevent critical system overheating.
• Auto-reset functionality, eliminating the need for manual reset after a trip event.
• Designated as HX OT1 type for easy identification.
• Cross-referenced with Seeley PN: 632605, suggesting wider application.

Technical Specifications

What's in the Box

• 1 x Braemar Overtemp Switch 110 Deg Auto HX OT1 (SY632605)

Using It on the Job

1. Always isolate power to the ducted gas heater at the mains and confirm zero voltage with a multimeter before commencing work.
2. Locate the existing overtemp switch, typically mounted on the heat exchanger or within the fan compartment.
3. Carefully disconnect the wiring, making a note of wire colours and terminal positions if they aren't clearly marked.
4. Remove the old switch and mount the new Braemar SY632605 switch securely in its designated place.
5. Reconnect wiring correctly, ensuring all terminals are tight and secure.
6. Restore power to the unit and test the heater's operation, monitoring for proper function and temperature limits.

Limitations & Safety Notes

• Primarily designed for Braemar ducted gas heaters. Verify compatibility with your specific model before installation.
• All electrical work on gas appliances in Australia must be performed by a licensed professional.
• This component is a critical safety device; never bypass, modify, or tamper with its intended operation.
• Always adhere to the heater manufacturer's installation and service instructions.
• Ensure proper airflow through the heat exchanger after replacement to prevent recurring overtemp trips.

Tradie Pro Tip

If you're replacing an overtemp switch, always do a full check of the heater's fan motor, flue, and air filters. An overtemp trip usually signals an underlying airflow issue or combustion problem, not just a faulty switch. Solve the root cause, not just the symptom.

Pair With

Pair with new air filters, a reliable multimeter for testing electrical circuits, and general ducted gas heater spares for a comprehensive service.