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Changing Blower Speed
Bostoner
Member Posts: 4
I have a Payne PG92SBS single stage unit for heat and AC. I would like to change blower speed to lower speed as it is very noisy and less flow would be fine. How can this be done?
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Comments
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On your circuit board you have your fan motor connections. Normally black is high yellow is med high blue is med and red is low. Two of the four wires are connected at cool and heat the others are at park on the board. Before you change any your furnace has more numbers in its model. I believe on Payne the fan is first followed by burner. so 36 090 would be 3 ton blower and 90k btu input. Match your fan speed with your outdoor unit btu. So if you have a 3 ton ac and your furnace is a 36 090 you want to be on either hi or med hi fan speed. if you have a 48 090 you can go lower. The installer should have left a book with fan speed info. If its a new or newish install they should come back and adjust fan speed for you.0
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On heating you should check the temperature rise to make sure you don't overheat the furnace. On cooling you should have 400-450 cfm/ton0
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Thanks for knowledgeable replies. You've convinced me to bring in a specialist to do it. I now know what questions to ask him!!0
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Noisy can mean a few things...air handler to big for ducts, blower wired to high speed , and a couple more.0
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