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The Cleveland Controls RFS-4100-021 Pressure Switch is a high-performance adjustable pressure switch designed for air monitoring in HVAC and industrial systems
This valve body is compatible with water and glycol mixtures ranging from 25% to 50% concentration
the signal output should typically measure approximately 0
and 406A models
Fenwal 35-665938-215 Control Board Refrigerant The Cleveland Controls RFS-4100-021 PressureThe Fenwal 35 665938 215 is a robust 120 240V Hot Surface Ignition (HSI) control board designed for precise automatic ignition system management in commercial and industrial HVACR applications. This microprocessor based gas ignition control provides consistent 120V HSI trial for ignition, utilizing remote flame sensing technology to ensure safe burner operation. Engineered for versatility, this Fenwal 35 series model handles line voltage requirements
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