When you're servicing a Bonaire ducted heater, especially an older MB5 unit, getting the right pressure switch is key for safety and reliability. This genuine Bonaire 170Pa pressure switch (PN 5431208SP) is designed specifically for those setups, making sure your system proves airflow correctly before ignition.

It's a critical component for ensuring the safe operation of your ducted gas heating system, preventing the burner from firing if there's insufficient airflow or a blocked flue.

Best For

• HVAC techs servicing Bonaire ducted gas heaters
• Ducted heating service and maintenance teams
• Refrigeration apprentices learning about gas heating systems
• Competent DIY owners maintaining their Bonaire MB5 units

Compatibility

This Bonaire 170Pa pressure switch is specifically designed for Bonaire MB5 ducted gas heaters. It's listed with Bonaire Part Number 5431208SP. If you're running a different model, check fittings and specs before ordering.

Features

• Genuine Bonaire component, ensuring correct fit and function.
• Rated at 170Pa for reliable airflow sensing in compatible units.
• Direct replacement for Bonaire Part Number 5431208SP.
• Critical safety component for ducted gas heating systems.

Technical Specifications

What's in the Box

• 1 x Bonaire Vulcan Pressure Switch 170Pa (CT-PSWITCH-170)

Using It on the Job

1. Always isolate power to the ducted heater at the main switchboard and apply a lockout tag before starting work.
2. Locate the existing pressure switch, usually near the combustion fan or flue.
3. Carefully disconnect the electrical leads and any pressure sensing tubes, noting their original orientation.
4. Remove the old switch and install the new Bonaire 170Pa unit, ensuring all connections for tubes and wiring are snug and correct.
5. Reconnect electrical leads and sensing tubes securely.
6. Restore power and perform operational checks according to manufacturer guidelines for ignition, fan operation, and safety cutout functionality.

Limitations & Safety Notes

• Only for use on Bonaire MB5 ducted gas heaters or specified compatible systems.
• All work on gas appliances should only be performed by qualified and licensed technicians in accordance with Australian standards.
• Always follow Bonaire's specific service manuals and Safe Work Australia guidance during installation and testing.
• Verify the pressure rating (170Pa) matches your specific heater's requirements before installation.

Tradie Pro Tip

When swapping out pressure switches, always double-check the small diameter hose for cracks or blockages. A good switch won't fix a bad hose, and it's often the real culprit for nuisance faults on these older Bonaire units.

Pair With

Pair with other Bonaire heating spares, such as control boards or ignitors, when doing a full service on an MB5 unit. Also, consider a digital manometer to verify system pressures post-repair.