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Smith 100208504 Relay is a critical 24V control component designed for high-performance integration within Copper-Fin CB/CW 497-747 boiler and water heater systems
Key Benefits Durable Material: Engineered with 70 Durometer black nitrile or equivalent synthetic rubber to handle the extreme thermal cycling common in Raytherm P-2100 to P-4001 units
the 90-118E provides the reliable switching performance that contractors expect from White-Rodgers components
Technicians typically look for signs of a "hunting" valve
Resideo ZD16X18TZ Damper R-448A Smith 100208504 Relay is aThe Resideo ZD16X18TZ is a robust 16" Wide X 18" High parallel blade zone damper engineered for precision airflow control in residential and light commercial HVAC zoning applications. Built with a high grade extruded aluminum frame and blades, this unit is designed for long term durability and low leakage performance. The synchronous motor is a 24Vac power closed spring return open actuator, ensuring a fail safe normally open position during power