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The IO HVAC CONTROLS RM-1810 is a rectangular zone damper designed for use in ducted HVAC zoning systems. Sized at 18 x 10 inches, it controls airflow to individual zones by opening and closing on command from a zone control board or thermostat. The damper ships with an integrated 3-wire Belimo actuator that operates on a 35-second stroke cycle, providing reliable, repeatable blade positioning. Licensed HVAC technicians install this unit as part of multi-zone forced-air systems in residential and light commercial applications.
This damper is suited for rectangular duct runs in single-stage or multi-stage forced-air zoning installations. The 3-wire actuator configuration supports both normally open and normally closed wiring schemes, making it compatible with most residential zone control panels. Typical installations involve trunk-and-branch duct layouts where individual zones require independent temperature control. The 18 x 10 inch face size fits standard rectangular duct sections of matching dimensions.
Designed as an OEM-style replacement or new-installation zone damper for rectangular duct zoning systems. The raw_title references Rheem zoning applications; confirm compatibility with your specific zone control panel and duct dimensions before installation.
Installation should be performed by a licensed HVAC technician. Shut down the air handler and de-energize all low-voltage control wiring before installing or wiring the actuator. Secure the damper into the duct section using sheet metal screws around the frame perimeter and verify blade orientation relative to airflow direction before making control wiring connections. Refer to the zone control panel wiring diagram to confirm proper 3-wire actuator terminal assignments.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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