This Bonaire Vulcan 120Pa pressure switch (CT-PSWITCH-120) is a critical safety component for Bonaire MB5 ducted gas heaters. It monitors pressure within the system, ensuring safe operation by preventing the burner from firing under incorrect conditions.

When you're troubleshooting a nuisance lockout on a cold Australian winter's day, having the correct genuine spare on hand means getting the job done right the first time, keeping your clients warm and avoiding repeat call-outs.

Best For

• HVAC technicians performing service and maintenance on Bonaire ducted gas heaters.
• Qualified gas fitters undertaking repairs on Bonaire MB5 units.
• Property maintenance teams managing Bonaire MB5 heater systems.

Compatibility

This Bonaire 120Pa pressure switch is specifically designed for Bonaire MB5 ducted gas heaters. It is an exact match for Bonaire Part Number 5431207SP. If you're running a different model, check fittings and specs before ordering.

Features

• Fixed Set Point: Calibrated to activate at 120 Pascals (Pa), critical for system safety.
• Genuine Bonaire Part: Ensures perfect fit and reliable operation with compatible heaters.
• MB5 Specific: Direct replacement for pressure switches found in Bonaire MB5 heater models.
• Safety Component: Plays a vital role in monitoring flue gas or combustion air pressure to prevent unsafe firing conditions.

Technical Specifications

What's in the Box

• 1 x Bonaire Vulcan Pressure Switch 120Pa (CT-PSWITCH-120)

Using It on the Job

1. Safety First: Before commencing any work, ensure the heater's electrical supply is isolated and locked out, and the gas supply is turned off at the main isolation valve.
2. Locate & Document: Identify the existing pressure switch on the Bonaire MB5 unit. Take photos or sketch the wiring and pressure tube connections for accurate reassembly.
3. Disconnect Old Switch: Carefully remove the pressure tubing and electrical terminals from the old switch. Note the orientation if applicable.
4. Install New Switch: Mount the new CT-PSWITCH-120 in the correct position. Reconnect the pressure tubing securely and attach the electrical terminals as documented.
5. Test & Verify: Restore gas and power. Initiate a test cycle on the heater, observing for proper ignition, flame proving, and normal operation across all stages. Monitor for any fault codes.
6. Final Checks: Conduct a thorough visual inspection for any loose connections or potential issues before leaving the site.

Limitations & Safety Notes

• This pressure switch is specifically for Bonaire MB5 heaters; it may not be compatible with other models or brands.
• Installation and testing of gas appliance components should only be performed by a suitably qualified and licensed gas fitter or HVAC technician.
• Always consult the specific Bonaire service manual for the MB5 unit before attempting repairs.
• Incorrect installation can lead to unsafe operation, carbon monoxide production, or system failure.

Tradie Pro Tip

Before you replace a pressure switch, always double-check its associated pressure tubing. Blocked, cracked, or kinked tubes can mimic a faulty switch, leading you to replace a good part unnecessarily.

Pair With

Consider pairing this pressure switch with other essential Bonaire Heating spare parts like gas valves or ignitors for a comprehensive service. Browse our range of general Ducted Gas Heaters components to ensure you have everything needed for the job.