McDonnell & Miller 7 B Switch R 410A This unit operates on a This unit operates on a 24 Vac control circuit and features an auto recycle function This HVAC drain pan is the direct engineering successor for discontinued part numbers 541689 and 328 15544 000 How do I verify the resistance range during commissioning The 7 B features the proportional potentiometer required for modulating systems
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McDonnell & Miller 7-B Switch R-410A This unit operates on a