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Technical Instructions POWERS™ Controls No. 3 Pneumatic Damper Actuator

Document Number 155-146P25

September 18, 2008

Page 2 Siemens Building Technologies, Inc.

Table 1. Product Numbers for No. 3 Pneumatic Damper Actuators.

Part No.

Nominal Spring Range

Description

Mounting Style

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 331-4331 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.

Specifications

Effective diaphragm area 8 inches

(51.6 cm

)

Stroke 2-3/8 inche

s (6 mm) *

Housing (totally enclosed) Aluminum

Stem Plated steel

Diap

hragm Ozone re

sistant rubber

Spring Steel

Cup Zytel

Maximum air

pressure 30 psig

(210 kPa)

Type of mounting Fixed or pivot

Thru

st and torque rating See Table 3

Agency Approvals Complies

with UL555 and UL555S

* For special applications, an actuator stroke of 2-3/4 inch is available in 3 to 7, 5 to 10,

or 8 to 13 ps

i (21 to 58, 35 to 69, or 55 to 90 kPa) spring ranges. Some models are UL

Recognized Components under UL’s Damper Actuator category (EMKU2), which

covers pneumatic damper actuators intended to be employed on fire dampers and

leakage rated dampers. Contact Siemens Building Technologies, Inc. National OEM

Sales and Marketing for information.

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