Johnson Controls M9220 Series Electric Damper Actuator, Spring Return, Proportional, 24V

This Electric Spring-Return Actuator provides reliable control of dampers and valves in HVAC systems. These bidirectional actuators do not require a damper linkage, and are easily installed on dampers with 1/2 in. to 3/4 in. or 12 mm to 19 mm round shafts, or 3/8 in. and 1/2 in. or 10 mm, 12 mm, and 14 mm square shafts using the standard shaft clamp included with the actuator. An optional M9220-600 Jackshaft Coupler Kit is available for 3/4 in. to 1-1/16 in. or 19 mm to 27 mm round shafts, or 5/8 in. and 3/4 in. or 16 mm, 18 mm, and 19 mm square shafts.

A single M9220-GGC-3 Electric Spring-Return Actuator provides a running and spring-return torque of 177 lb·in (20 N·m). Two or three models mounted in tandem deliver twice or triple the torque. The integral line voltage auxiliary switches indicate end-stop position or perform switching functions within the selected rotation range.

Features:
Available torques of 177 lb·in (20 N·m) for single actuators, 354 lb·in (40 N·m) for two models, and 531 lb·in (60 N·m) for three models mounted in tandem.
Reversible mounting design to simplify installation and enable the actuator to spring return in either direction.
Electronic stall detection throughout entire rotation range. This extends the life of the actuator by deactivating the actuator motor when an overload condition is detected.
Removable coupler, adapts to a shorter damper shaft.
Integral 48 in. (1.2 m) halogen-free cables with colored and numbered conductors, simplifying field wiring.
Integral auxiliary switches provide one fixed and one adjustable switch point with line voltage capability.

NEMA 2 (IP54) rated aluminum enclosure to protect the internal components of the actuator from dirt and moisture.
Easy-to-use locking manual override with auto release and crank storage allowing for manual positioning of the actuator hub.
Integral connectors for 3/8 in. flexible metal conduit to simplify installation and field wiring.
Microprocessor-controlled brushless DC motor provides constant run-time independent of torque.