Greenheck MS4120 Installation Manual

Part number 473696

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MS Series Actuators

Mounted Internally

Models MS4120, MS8120, MS4620, MS7510, MS7520 and MS8110

INSTALLATION INSTRUCTIONS

These instructions apply to the internal field replacement of the Honeywell, FATPA Series, actuators on Greenheck models
VCD control dampers. when they are duct mounted or sleeved.

ACTUATOR PART #
MS4120F1006 115V 382823
MS8120F1002 24V 382824
MS4620F1005 230V 382825
MS4120F1204 115V 383024
MS8120F1200 24V 383255
MS4620F1203 230V 383254
MS7510A2008 383739
MS7510A2206 383213
MS8110A1206 383818
MS7520A2015 383785
MS7520A2213 383784

ITEM # QTY PART # DESCRIPTION

1 1 723981 INTERNAL ACTUATOR BRKT
2 1 839475 DRIVE LINK ASSEM BLY
3 1 829206 1/ 2" CRANK ARM A SS EMB LY
4 1 451588 1/ 4" E -RING
5 1 593831 6. 5" JACK SHAFT, 1/2" DIA.
6 1 415934 10-24 NY LOC NUT
7 1 846545 1/ 2" A NTI-ROTATION BRKT. ASM
8 1 416048 10-24X.375 SHOULDER BOLT

9 2 415264 1/ 4-20x1/2 TCS
10 1 SEE CHART ACTUATOR
11 1 370159 1/ 2" S NAP IN BEA RING
12 1 416179 RE TAINING RING 1/2"

Tools Required:

Wrenches: (1) 7⁄16 in., (1) 3⁄8 in., (1) 9⁄16 in.

(1) Ratchet with

(1) 1⁄8 in. Allen wrench,

(1) Drill with 3⁄8 in. nut driver,

3

⁄8, 7⁄16, 9⁄16 in. deepwell

socket

(1) .203 dia. drill bit

Figure 1: Honeywell Series internal mount (exploded view).

Blade Axle Bracket

Damper Blade

1.563 in.
(39mm)

1.75 in. (44mm)
Blade Lever Hole
Location

.203 in. (5.2mm) Diameter.
(2)

Detail A

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Equipment Damage or Electrical Power Hazard.

WARNING

Line voltage can cause death or serious injury
and short equipment circuitry. Disconnect power
supply before installation.

!

Device Malfunction Hazard. Improper set screw
tightening causes device malfunction. Tighten
set screws with proper torque to prevent damper
shaft slippage.

CAUTION

INSTRUCTIONS MS DIRECT DRIVE SERIES

Black

White

120 Volt o

r

24 volt

M

These installation instructions assume a damper is
already mounted in a duct or sleeve. Have damper
blades in the fail position.

1. Drill [2] .203 inch holes in the third blade from
bottom, at location shown in detail "A".

2. Attach blade drive lever to blade using [2] ¼ in.

- 20 x ½ in. thread cutting screws, self drilling
screws or ¼ -20 x 1¼ in. bolts.

3. Fasten actuator bracket (item 1) to the left
jamb of damper frame using [2] thread cutting
screws. Note: the 0.563 in. hole in the bracket
(item 1) that the 6 1/2 in. jackshaft (item 5) goes
through must be centered with the centerline of
the blade. Snap bearing (item 11) into internal
actuator bracket (item 1).

4. Snap bearing (item 11) into anti-rotation bracket
(item 7) and attach the anti-rotation bracket
assembly (item 7) to the internal mount bracket
(item #1) using [2] thread cutting screws (item 9).

5. Slide ½ in. diameter rod (item 5) slightly through
the anti rotation bracket (item 7). Install crankarm
(item 3) and drive link (item 2) onto the ½ in.
diameter rod (item 5) and install retaining clip
(item 12) to lock drive link onto the crankarm.

6. Install 10-24 x .375 shoulder bolt (item 8) to the
anti rotation bracket (item 7) using #10 Nylock
nut (item 6).

7. Attach actuator (item 10) to anti-rotation bracket
assembly (item 6). Tighten actuator onto shaft.

8. Connect drive link to blade drive lever using
e-clip. With blades closed and the actuator in its
fail position, position blades in their fail position
and tighten the crankarm to the 1/2 in. shaft.

9. Connect all electrical leads to the actuator.
Apply power to the actuator. The damper blades
should power position and return to the fail
position when power is disconnected.

Important

A break in power of less than one second can cause the
actuator to spring-return 5 degrees or less and remain in
place until a break in power of longer duration.

MS4120F1006

MS4120F1204

MS4620F1005

MS4620F1203

MS7510A2008

MS7510A2206 14W

MS7520A2007 16W

MS7520A2015 22W

MS7520A2205 16W

MS7520A2213 22W

MS8110A1206 24 VAC/VDC 30W 8W

MS8120F1002

MS8120F1200

Wiring Illustration

Model Volts Running Holding

120 VAC 35W 10W

230 VAC 35W 10W

14W

24 VAC/VDC

24 VAC 45W 10W

5W

Copyright © 2010 Greenheck Fan Corporation

473696 Internal lg MS IOM Rev. 1 May 2010