Braemar TQM 618 Gas Ducted Heater Air Pressure Switch 18 Pa

This genuine Braemar TQM 618 gas ducted heater air pressure switch is a critical safety component. Rated at 18 Pa, it's designed specifically for condensate systems, ensuring your heater operates safely and reliably by detecting proper airflow.

You know the drill – when a gas ducted heater starts acting up, especially with intermittent ignition or lockout errors, the air pressure switch is often the first suspect after checking for blocked flues. Having a reliable, genuine replacement on hand saves call-backs.

Best For

• HVAC Service Technicians
• Gas Fitters
• Maintenance Teams for Ducted Heating Systems

Compatibility

This air pressure switch (PN. 639826) is specifically designed for the Braemar TQM 618 gas ducted heater. It's also compatible with other Braemar models that use the same part number, including the THM 618, TQM 632 & X, TQM 623 & X, TQS 720, and TQ 516 series. Always cross-reference the part number and model before installation.

Features

• Genuine Braemar Part: Ensures perfect fit and reliable operation as per manufacturer specifications.
• 18 Pa Rating: Calibrated for the precise pressure differential required in Braemar condensate gas ducted heaters.
• Gold Tech for Condensate: Designed for robust performance in environments prone to condensate presence.
• Safety Critical Component: Essential for preventing unsafe operation due to blockages or fan failures.

Technical Specifications

What's in the Box

• 1 x Braemar TQM 618 Gas Ducted Heater Air Pressure Switch 18 Pa Gold Tech for Condensate (PN. 639826)

Using It on the Job

1. Safety First: Before starting any work, ensure the gas supply is isolated and the electrical power to the heater is disconnected and locked out.
2. Access: Carefully access the existing air pressure switch within the heater's compartment, usually near the fan or flue system.
3. Remove Old Switch: Disconnect the vacuum tubes and electrical wiring from the old switch. Note their original positions carefully or take a photo.
4. Install New Switch: Mount the new genuine Braemar switch in the same position. Reconnect the vacuum tubes and electrical wiring as they were.
5. Test Operation: Restore gas and electrical supply. Perform a full operational test of the heater to confirm the switch is functioning correctly and the heater cycles normally without errors.

Limitations & Safety Notes

• Professional Installation Required: Installation of this part, which involves gas and electrical connections, must be performed by a qualified and licensed professional to ensure safety and maintain warranty validity.
• Non-Refundable Condition: This product, like other ignition and electrical parts, is shipped in a tamper-evident satchel and is non-refundable once opened. Ensure you confirm compatibility before breaking the seal.
• Compatibility: Only for the specific Braemar models and part numbers listed. Do not use if your model or part number differs.
• Australian Standards: Always follow Australian standards and Safe Work guidance during installation and servicing.

Tradie Pro Tip: Before replacing the switch, always check the condensate drain lines for blockages or water ingress, as these can mimic a faulty pressure switch by preventing proper pressure differential. A good clean might save you a new part.

Pair With

Pair this air pressure switch with other Braemar gas heater spare parts or general gas ducted heating accessories from HVAC Shop to complete your service kit. Consider checking your ignitor and flame sensor for wear when performing maintenance.