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Durable Construction: Heavy-duty brass design resists corrosion and thermal fatigue
It is not recommended
optimal draft conditions
Critical for sequential control setups where multiple dampers operate from a single signal
Rheem-Ruud 47-21711-11 Limit Switch Durable Construction: Heavy-duty brass designThe Rheem Ruud 47 21711 11 Limit Switch is a critical safety component designed for precise thermal regulation in HVAC furnace systems. As a genuine OEM replacement part, this normally closed (SPST) switch is engineered to disrupt the burner circuit if internal plenum temperatures exceed safety thresholds. It features a fixed open temperature of 180F and a fixed close temperature of 160F, providing a 20F differential that prevents rapid cycling of the
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