Honeywell ML4125- User Manual
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Table of Contents:
- Page 4 – INSTALLATION; WARNING; Location and Mounting; CAUTION; Preparation
- Page 5 – Installation; Wiring
- Page 6 – OPERATION; CHECKOUT
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 ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Operation ..........................................................................
Checkout ..........................................................................
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Summary
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS 63-2567—3 4 INSTALLATION When Installing this Product... 1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. 2. Check the ratings given in the instructions and on the ...
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS 5 63-2567—3 Installation CAUTION Device Malfunction Hazard.Improper set screw tightening causes device malfunction.Tighten set screws with proper torque to prevent damper shaft slippage. CAUTION Actuator Damage Hazard.Using actuator ...
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS 63-2567—3 6 OPERATION The actuators are operated by an spst two-position controller. When using an spst two-position controller, the actuator drives to the damper fully open position when controller contact makes and spring returns t...
