Honeywell Greenheck MS4120 User Manual

Tools Required:
Wrenches:
(1)
3
⁄8 in., (1)
7
⁄16 in., and (1) 10mm
Mounting shown for damper in
vertical position.
Note: Torque actuator shaft clamp
screw to 88 in./lbs. (9.9Nm).
No. Part Number Qty Description
1 MS actuator
2 415455 4
1
⁄4 - 20 spinlock nut
3 415586 4 #14 x
3
⁄4 TEK SMS
4 415934 1 #10-24 nylock nut
5 416048 1
1
⁄4 x
3
⁄8 shoulder bolt
6 815027 1 standoff bracket
7 723089 1 mounting bracket
8 415609 4 thread stud
Safety Warning
Equipment damage or electrical power hazard. Line
voltage can cause death or serious injury and short
equipment circuitry. Disconnect power supply before
installation.
These instructions apply to the external field installation of Honeywell actuators on Greenheck model VCD control
dampers when they are duct mounted or sleeved.
®
Honeywell MS4120 MS4620 MS8120 1
®
Document 464287
Honeywell Actuators Direct Drive
MS4120, MS4620, MS8110, MS8120,
MS7510, and MS7520
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.

Honeywell Greenheck MS4120 Specifications

General

Brand	Honeywell
Model	Greenheck MS4120
Category	Controller
Language	English

Summary

Honeywell Actuators Direct Drive Installation Operation and Maintenance

Tools Required for Actuator Installation

Lists necessary wrenches and tools for installing Honeywell actuators.

Safety Warning for Electrical Hazards

Alerts users to potential death or injury from electrical shock during installation.

Actuator Installation Instructions

Install Standoff Bracket

Guides mounting the standoff bracket for jackshafted or direct drive dampers.

Mount Actuator Bracket

Details attaching the actuator bracket using thread studs and nuts.

Actuator Rotation Adjustment

Explains how to set the actuator's rotation for the correct damper fail position.

Mount Actuator to Damper Shaft

Instructions for sliding and securing the actuator onto the damper drive shaft.

Actuator Wiring and Operation

Illustrates electrical connections and describes expected actuator behavior.

Company Commitment and Warranty

Information on product updates, warranties, and contact details.