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Does this assembly include the metering orifice
Electrical Isolation: Efficiently switches high-current fan loads using a low-voltage 24V control signal
Minimal Maintenance: The free-floating lever mechanism reduces friction points
The module operates on a standard 24V AC 50/60 Hz input and requires a transformer with at least a 20 VA rating
Always verify the part number on the existing board matches 331-02507-603 before installation
Lochinvar & A.O. Smith 100110799 Damper Drive 321894-709 Does this assembly include theThe Lochinvar & A. O. Smith 100110799 Damper Drive is a critical flue damper actuator designed for 6 inch venting systems on high efficiency commercial boilers and water heaters. Engineered as the direct 192957 004 replacement part, this 24V motorized drive ensures precise control of the combustion air path, preventing standby heat loss during off cycles. It features a high torque internal motor assembly and integrated end switches that provide