Installation Instructions

ManualsBrandsSiemens ManualsDampers#3 Pneumatic Damper Actuator w/ Integral Pivot & Post, Extended Shaft (5 to 10 psi)

Document No. 129-127

November 15, 2021

Powers™ Controls

No. 3 Pneumatic Damper Actuator

Item Number 129-127, Rev. FA Page 1 of 3

Product Description

The No. 3 Pneumatic Damper Actuator is a compact,

totally enclosed, rolling diaphragm type actuator

designed for modulating or two-position actuation of

dampers or air valves.

Required Tools

• Flat-blade screwdriver

• Adjustable crescent wrench

• Pliers

Prerequisites

• Ensure all kits are ordered and available for

installation. Kits are listed with each

mounting application.

• Have the damper manufacturer drill the

mounting holes.

Expected Installation Time

28 minutes

Product Numbers

Description

Mounting Style

Part No.

Nominal Spring Range

3-7 psi

(21-48 kPa)

5-10 psi

(35-69 kPa)

8-13 psi

(55-90 kPa)

Actuator

Front

331-4310

331-4510

331-4810

Actuator, bracket

Fixed

331-4313

331-4513

331-4813

Actuator, bracket, clevis

Fixed

331-4314

331-4514

331-4814

Actuator, integral pivot

Pivot

331-4312

331-4512

331-4812

Actuator, integral pivot with pivot post *

Extended shaft

331-4311

331-4511

331-4811

Actuator, integral pivot with pivot post *

Extended shaft kit with positioning relay

—

332-4811

Actuator, bracket, ball joint connector

Fixed

—

331-4531

331-4831

Actuator, bracket, ball joint connector,

and positioning relay

Fixed

—

332-4831

Extended shaft with 90° barb fitting (for

fume hood controller applications)

Extended shaft

—

546-00020

* Mounted on plate for extended shaft with clevis and crank for 3/8-inch (10-mm), 7/16-inch (11-mm),

or 1/2-inch (13-mm) diameter shaft.

NOTE: When the actuator is ordered with Extended Shaft mounting, the mounting plate, pivot post and

hardware, clevis, damper crank, rocker arm, and all screws/nuts are included. Order other frame

mounting accessories as required if not supplied by damper manufacturer.

Summary of content (3 pages)

PAGE 1
Installation Instructions Document No. 129-127 November 15, 2021 Powers™ Controls No. 3 Pneumatic Damper Actuator Prerequisites Product Description The No. 3 Pneumatic Damper Actuator is a compact, totally enclosed, rolling diaphragm type actuator designed for modulating or two-position actuation of dampers or air valves. Required Tools • Flat-blade screwdriver • Adjustable crescent wrench • Pliers • Ensure all kits are ordered and available for installation.
PAGE 2
Document No. 129-127 Installation Instructions November 15, 2021 Installation Extended Shaft Mounting – Pivot Actuator Actuators: 331-4311, 331-4511, 331–4811, or 332-4811. These assemblies are designed for 90° damper rotation. NOTE: Clevis mounts in Crank Radius Hole No. 6 for 90° damper rotation. 1. Slip the 9/16-inch (14 mm) diameter hole in the mounting plate over the damper shaft (Figure 1). 2. Slip the crank over the 3/8 through 1/2-inch (10 through 13-mm) diameter damper shaft (Figure 2). 3.
PAGE 3
Document No. 129-127 Installation Instructions November 15, 2021 Extended Shaft Mounting – Fixed Actuator, Continued 3. Attach the link to the crank at the radius value determined in Step 2. 4. Attach the clevis and other end of the linkage to the actuator shaft (Figure 3). 5. The normal position of the damper (open or closed) and its direction of rotation (CW or CCW) will determine the location of the actuator and linkage assembly (Table 1 and Figure 3). 6.