If it's a pelpro with the Accutron control board it does. You may not notice it as it's very slight variations, but it does vary it. You may not notice it too because your fan is shot, but I know it does vary between feed settings.
Combustion fan cleaning interval
- Thread starter Yuneec Pilot
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Yes it is the Accutron. It must be a variable freq drive. I'd have to get a scope to see how it controls speed. I could check with the draft meter if I put an tee in the suction line to the vacuum switch.