Gas Boiler Air Pressure Switch

The air pressure switch enables safety protocols that check the fan is in full working order.

Gas boiler air pressure switch.

What is an air pressure switch. A boiler air pressure switch also referred to as the pressure safeguard acts as a safety mechanism that checks the fan is in full working order. The boiler fans starts but the boiler does not ignite. For boilers and burners most of them prove proper air flow through the combustion chamber and or exhaust flue.

Next take off one of the power hoses and blow on it. Baxi potterton main myson gas valve. It ensures that if the fan fails within the boiler there would not be a build up of toxic gasses with no means of venting them. What is an boiler air pressure switch.

The fan creates a draft which allows harmful gases to be released from the boiler via the flue. Gw a4 2 hp sgs. Differential vacuum and pressure for commercial and industrial boilers. Gas pressure switch for up to 120 psi and for special gases usa cdn gw a2 sgv.

When the fan starts during the sequence of boiler operation the boiler air pressure switch must signal the printed circuit board and then ignite. For your boiler to fire up the pressure switch needs to have recognised that the fan is running first. Air pressure switches can be used in many different applications. Use an ohmmeter to check if the pressure switch is opening or closing properly when heat is called for.

A boiler air pressure switch ensures that the waste gases from the boiler are expelled properly. Step 2 inspect the pressure switch. Boiler cycles on and off. It is a crucial part of the fire up sequence for all boilers and is a very important area to check when a boiler fails in the boiler start up sequence.

The air pressure switch in a boiler ensures that waste gases are being expelled before allowing to fire up. Pressure switch for gas air flue gases and combustion products max. But for example if there is a blocked flue the air pressure will not work correctly and remain closed creating a fault. Special gases high pressure gas and air pressure switch max.

It ensures that if the fan fails within the boiler there would not be a build up of noxious gases with no means of venting them. Now use the ohmmeter to check whether the pressure switch is functioning properly. Boilerwarehouse stocks many different air pressure switches. Gw 500 a4 gw 500 a4 2 ip65.

First turn the power of the furnace off. Baxi 226060 air pressure switch fitted to the early solo 1 pf range connects to the two pressure sensing hoses 239748. The pcb closely monitors the air pressure switch to make sure it is in full working order before the unit is fired up.