HVAC TIP – Checking Manifold Gas Pressure.

checking manifold gas pressure

Checking/testing gas fired appliance manifold pressure is an integral part of service, maintenance and unit start up for optimal performance. 

It could be the difference between a properly functioning system to a potentially pre-mature failure of a heat exchanger and more…

Under-fired or over-fired appliances like furnaces, boilers, and package rooftop units could have varying symptoms, although that is for a different post.

The video below focuses on how to test manifold gas pressure with bonus footage of checking the negative heat exchanger pressure needed to close the pressure switch.

Always use the manufacturer info to determine what manifold pressure to set your appliance to.  

Conclusion

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Gary McCreadie

Gary McCreadie is an HVAC tech, the creator of hvacknowitall.com, the HVAC Know It All Podcast, and owner of McCreadie HVAC & Refrigeration Services

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HVAC Know It All was created by Gary McCreadie, a licensed refrigeration and gas technician, with three goals in mind:
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