Honeywell ML4125 Manuals

PRODUCT DATA 63-2567-3 ® U.S. Registered Trademark Copyright © 2000 Honeywell • All Rights Reserved N314 ML4125, ML4135, ML8125, ML8135 Fast-Acting, Two-Position Actuators FOR HEATING, VENTILATION AND AIR-CONDITIONING APPLICATIONS APPLICATION The ML4125, ML4135, ML8125 and ML8135 Fast-Acting, Two-Position Actuators are spring return direct coupled actuators (DCA) with an integral junction box for on/off damper control. The actuator accepts an on/off signal from a single-pole, single-throw (spst) controller. Models are available with clockwise (cw) or counterclockwise (ccw) spring return and are designed for heating, ventilation, and air-conditioning (HVAC) applications. IMPORTANT This actuator is not to be used in fire/smoke applications requiring UL555/555S approval. FEATURES • Integral spring return. • -40 to 130°F (-40 to 54°C) operating temperature range. • No audible noise during holding. • Electronic circuitry provides efficient operation while eliminating the need for limit switches. • Ninety-five degree angle of rotation. • Die-cast aluminum housing. • Housing design allows flush mounting to damper. • Integral junction box with three conduit openings eliminates need for separate wiring box. • Direct mounting to 3/8 or 1/2 in. round or square shaft. ML4125, ML8125 • 100 lb-in. (11.3 N•m) minimum driving torque. • 25 to 40 second drive timing (load dependant). • Models available for 24, 120, and 230 Vac. ML4135, ML8135 • 40 lb-in. (4.5 N•m) minimum driving torque. • 20 to 25 second drive timing (load dependant). • Models available for 24 and 120 Vac. APPLICABLE LITERATURE — Motor/Actuator Selection Guide for Damper Applications 63-8419 — Engineering Manual of Automatic Control (also called The Gray Manual) 77-1100 — Direct Coupled Actuator Quick Selection Guide 63-8553 — Damper Torque Calculator 63-8437 Contents Application ........................................................................ 1 Features ........................................................................... 1 Specifications ................................................................... 2 Ordering Information ........................................................ 2 Installation ........................................................................ 4 Operation .......................................................................... 6 Checkout .......................................................................... 6