PRODUCT DATA
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
Þ
63-2209-8
35 and 70 lb-in.
Non-Spring Return
Direct Coupled Actuators
ML6161, ML7161, ML6174, ML7174
APPLICATION
The 35 and 70 lb-in. Non-Spring Return Direct Coupled
Actuators (DCA) are control actuators that provide floating or
proportioning control for valves and dampers. The
proportioning actuators accept a current or voltage signal from
a controller to position the damper or valve at any chosen
point between fully open and fully closed. Floating actuators
are suitable for use with single pole double throw (spdt)
floating thermostats or two-position control systems.
Two-position control requires installation of the 201052B
Auxiliary Switch.
FEATURES
• Selectable 45°, 60°, or 90° stroke in both clockwise
(cw) or counterclockwise (ccw) directions.
• 0° to 30° minimum position adjustment (cw or ccw
direction) on all models.
• Magnetic coupling eliminates the need for mechanical
stops.
• Two field-addable auxiliary switches.
• Auxiliary feedback potentiometer field-addable on
select models.
• Manual declutch on all models.
• ML7161 and ML7174 models include standard reverse/
direct acting rotation switch on outside cover.
• W7620 Terminal Unit Controller compatibility.
• Commercial zone damper in W7600 Commercial Zone
System compatibility.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 5
Operation .......................................................................... 10
Checkout .......................................................................... 12
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