Siemens 331-2856 - User Manual
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Table of Contents:
- Page 2 – Table 1. Product Numbers for No. 6 Pneumatic Damper Actuators.; Product Numbers; Specifications
- Page 3 – Accessories; TB-128 POWERSTM Controls Damper Shaft Extension; Service Kits
- Page 4 – Actuator Sizing; Calculate the total torque required to move the damper:; Page 4
- Page 5 – Operation; Order one of the following and see Table 4 for parts lists:
- Page 6 – Table 4. Extended Shaft/Frame Mounting Assemblies Components.; Page 6
- Page 7 – Position the crank driven by the actuator as follows:
- Page 8 – Follow the steps in; Attached to Frame Mounting Kit 752.; Page 8
- Page 9 – Attach the mounting plate to the mounting lug as follows:
- Page 10 – Actuator Mounting
- Page 11 – Dimensions; Figure 13. Extended Shaft Remote Mounting with Travel Stops.; Depending on
- Page 12 – RL 147 Positioning Relay Mounting.
POWERS™ Controls
Technical Instructions
Document No. 155-029P25
AP 331-3
December 3, 2004
No. 6 Pneumatic Damper Actuator
331-2793 Actuator
331-2857 Actuator
with Clevis and Pin
331-3012 Extended Shaft and Frame
Mounting
Description
The POWERS Controls No. 6 Pneumatic Damper Actuator is a heavy-duty, rolling
diaphragm, spring return actuator designed to drive large dampers, centrifugal
refrigeration inlet vanes, and other applications requiring a large, effective diaphragm
area and long stroke.
Features
•
All metal body construction
•
Replaceable ozone-resistant, silicone rubber, rolling diaphragm
•
Pivot mounting for extended shaft or frame mounting
•
Positioning relay (optional)
•
Adjustable forward travel stops (optional)
•
Three spring ranges for sequencing with other control devices
Product Numbers
See Table 1.
Application
The No. 6 Pneumatic Damper Actuator controls outdoor, return air, exhaust, face and
bypass, and fan discharge dampers. It is recommended for heavy-duty applications
using multi-section dampers where either unison or sequence operation is required.
Certain actuators in Table 1 are UL Recognized Components for
fire/smoke applications under category EMKU2. This category covers
pneumatic damper actuators used on fire dampers and leakage rated
dampers.
Siemens Building Technologies, Inc.
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Summary
Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Table 1. Product Numbers for No. 6 Pneumatic Damper Actuators. Product Numbers Nominal Spring Range Description Mounting Style 3-8 psi (21-55 kPa) 3-13 psi (21-90 kPa) 8-13 psi (55-90 kPa...
POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Accessories Damper shaft extension kits: 1/2-inch (13-mm) diameter, 2-1/4 inch (57-mm) rod 331-631 (See TB-128 POWERS™ Controls Damper Shaft Extension Technical Bulletin 155-205P25) 1/2-i...
Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Actuator Sizing The quantity of actuators required depends on several torque factors. To determine the quantity of actuators required for the installation: 1. Obtain damper torque ratings...
