Braemar Overtemp Switch 110 Deg Auto HX OT1

This Braemar overtemp switch is a crucial safety component for ducted gas heating systems, specifically designed to prevent overheating by tripping at 110 degrees. It's an auto-reset type, meaning it will reset itself once temperatures drop after a fault is cleared.

As any tech knows, keeping these safety limits in spec is non-negotiable for system longevity and homeowner safety, especially heading into a long winter season. Installing a genuine replacement ensures your heater's protective circuits are functioning as intended.

Best For

• Ducted gas heater service and maintenance.
• Replacement in compatible Braemar and Seeley heating units.
• Ensuring system safety and compliance.

Compatibility

This overtemp switch is designed for Braemar ducted gas heaters and can also be used in some Seeley systems that require the 110 Deg Auto HX OT1 switch, identified by part number 632605. If you're running a different model, check fittings and specs before ordering.

Features

• Genuine Braemar overtemp switch for reliable operation.
• Pre-set trip temperature of 110°C to protect heat exchangers.
• Auto-reset functionality, allowing the system to restart once temperature drops.
• Specifically coded as HX OT1 for direct replacement.

Technical Specifications

What's in the Box

• 1 x Braemar Overtemp Switch 110 Deg Auto HX OT1 (SY621838)

Using It on the Job

1. Before beginning any work, ensure the main power supply to the heater is isolated and locked out to prevent accidental energisation.
2. Locate the existing overtemp switch, usually mounted near the heat exchanger or within the burner compartment.
3. Carefully disconnect the wiring from the old switch, making note of the orientation and connection points.
4. Unmount the faulty switch. If it's secured with screws or clips, ensure you use the correct tools to avoid damage to the heater casing.
5. Install the new Braemar overtemp switch, ensuring it is securely fastened in its correct position.
6. Reconnect the wiring, double-checking all connections for tightness and correct polarity.
7. Restore power to the heater and perform a functional test, monitoring for proper operation and ensuring the system does not trip the overtemp switch under normal operating conditions.

Limitations & Safety Notes

• This switch is designed for specific Braemar and Seeley ducted gas heating systems. Verify compatibility with your unit's model and original part number before installation.
• Always ensure power is isolated and locked out before commencing any electrical work on HVAC systems.
• Installation should only be performed by a qualified and licensed technician.
• Follow all manufacturer's instructions and relevant Australian safety standards during installation and testing.

Tradie Pro Tip

Always check for the root cause of an overtemp trip, not just replacing the switch. Common culprits are blocked filters, restricted airflow, or a faulty fan motor. Replacing the switch without fixing the underlying issue is a recipe for a callback.

Pair With

Pair this overtemp switch with other ducted gas heater spares like gas valves or control boards if performing a full system overhaul. Consider a digital multimeter for comprehensive diagnostic checks of electrical circuits.