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Gas Furnace Sequence of Operation! 80% Efficient Direct Ignition!
In this HVAC Training Video, Craig Describes the Basic Sequence of Operation on an Older Gas Furnace! Supervision is Needed by a Licensed HVACR Tech While Performing Tasks as Experience and Apprenticeship Garners Wisdom and Safety. Learn More About Refrigerants, Procedures, & Other HVAC topics by Picking up The 2nd Edition Book: https://a.co/d ...
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