An air pressure switch designed for use in Potterton Celsia, Prima F, Profile Prima and British Gas Boilers. A vital safety device, an air pressure switch ensures the Boiler fan is working correctly and prevents a build up of toxic gases with no means of venting them in case of a fan failure. The unit's PCB closely monitors the air pressure switch to ensure it's fully functional before firing the system up, keeping the appliance from starting Without the presence and operation of key safety features.
Please always refer to the manufacturer's instructions for the correct application. All parts should be fitted by a qualified gas-safe certificate plumber.
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This part supersedes: 402S3685
Suitable for the following appliances:
• British Gas 50/60 F2
• Celsia 30/50/60/80 F1
• 40/50/60/80/100 F
• 60E/100E Lpg
• British Gas 30/40/80 F2
• Celsia 40 F1
• Scottish Gas 30/40 F2