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The RESEARCH PRODUCTS 6734 is a rectangular zone damper with an integrated synchronous motor, designed for use in residential and light commercial HVAC zoning systems. The damper features an aluminum frame and blade construction with a galvanized finish, providing durability in ducted air distribution applications. It operates on a power closed, spring open actuation method, meaning the motor drives the damper closed and a spring returns it to the open position on power loss. The motor runs on 24 VAC at 60 Hz, drawing 6 watts and 10 VA. Rated at 1 in-WC static pressure, this damper is installed by HVAC technicians as part of a zoned forced-air system.
The 6734 is suited for residential zoning applications and light commercial ducted systems where rectangular dampers are required. Its side mounting configuration allows installation in standard rectangular ductwork runs. The flexible link design found in residential sizes accommodates minor duct misalignment and reduces stress on the blade assembly during operation. This damper is typically used where a zoning control board or thermostat system switches 24 VAC power to open and close individual duct zones, balancing airflow across multiple areas of a building.
Designed as an OEM-style replacement or new-installation zone damper for residential and light commercial rectangular duct zoning systems using 24 VAC low-voltage controls.
Installation should be performed by a licensed HVAC technician familiar with low-voltage zoning systems. Disconnect power to the air handler and zoning control board before installing or replacing any zone damper. Verify that the duct opening matches the damper frame dimensions before securing the side mount brackets. Consult the zoning control manufacturer wiring diagram for proper motor lead connections and confirm the control system is rated to supply the required VA load when multiple dampers are wired to a single zone board.
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