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If the 190-220°F range is breached due to a weak internal spring or fouled sensor
this assembly ensures consistent furnace pilot light stability and reliable burner ignition
It is a critical component for building automation systems
The M1-M2 terminals should always be assigned to the blower circuit to ensure the fan is the first component on and the last component off during the heating cycle
EWC Controls CLBD-14 Damper 30067439-890 If the 190-220°F range isThe EWC Controls CLBD 14 is a professional grade 14 inch round constant load bypass damper engineered to maintain optimal static pressure in multi zone HVAC applications. As the direct replacement for the legacy SPRD 14 and PRD RD 14 models, this unit effectively manages HVAC airflow relief when individual zone dampers close, preventing excessive static pressure build up that can lead to blower motor strain and increased duct noise. Built with a
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