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ManualsBrandsSiemens ManualsDampers#6 Pneumatic Damper Actuator w/ Pivot Mount & Forward Travel Stops (8 to 13 psi)

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

Siemens Industry, Inc.

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.

Summary of content (12 pages)

PAGE 1
Technical Instructions Document No. 155-029P25 AP 331-3 December 3, 2004 POWERS™ Controls 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.
PAGE 2
Technical Instructions Document No. 155-029P25 December 3, 2004 POWERS™ Controls No. 6 Pneumatic Damper Actuator Table 1. Product Numbers for No. 6 Pneumatic Damper Actuators.
PAGE 3
POWERS™ Controls No. 6 Pneumatic Damper Actuator Accessories Service Kits Siemens Industry, Inc. Technical Instructions Document No.
PAGE 4
Technical Instructions Document No. 155-029P25 December 3, 2004 Actuator Sizing POWERS™ Controls No. 6 Pneumatic Damper Actuator The quantity of actuators required depends on several torque factors. To determine the quantity of actuators required for the installation: 2 1. Obtain damper torque ratings (ft-lb/ft ) from the damper manufacturer. 2. Determine the area of the damper. 3. Calculate the total torque required to move the damper: Total Torque = Torque Rating x Damper Area 4.
PAGE 5
POWERS™ Controls No. 6 Pneumatic Damper Actuator Operation Standard Actuator (Figure 1) Technical Instructions Document No. 155-029P25 December 3, 2004 The air tubing from a controlling instrument is connected to the actuator’s upper housing. With no control pressure to the actuator, the compression spring forces the spring seat and actuator shaft toward the upper housing, but is limited by the E-ring.
PAGE 6
Technical Instructions Document No. 155-029P25 December 3, 2004 POWERS™ Controls No. 6 Pneumatic Damper Actuator Table 4. Extended Shaft/Frame Mounting Assemblies Components. Item Part No. Description Qty.
PAGE 7
POWERS™ Controls No. 6 Pneumatic Damper Actuator One-Section Damper Kit 751 See Figure 4 and Figure 5 Technical Instructions Document No. 155-029P25 December 3, 2004 1. Attach the damper mounting bracket to the lower right-hand corner (or upper left-hand corner if necessary) of the damper section with the six screws provided. For Arrow United Industries 1770 dampers, add the shim provided between the bracket and bottom of the frame.
PAGE 8
Technical Instructions Document No. 155-029P25 December 3, 2004 Frame Mounting Type A, Continued Two-Section Damper Kit 752 POWERS™ Controls No. 6 Pneumatic Damper Actuator 1. Follow the steps in One-Section Damper. 2. Attach the Damper Blade Clip to the damper blade in the second damper section. Repeat Step 2 in One-Section Damper. The push rod will connect to the extra crank on the drive shaft. See Figure 6 and Figure 7 Figure 6. Two-section Damper. Figure 7.
PAGE 9
POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Frame Mounting Type B 1. Order one each of the following: Actuator assembly: 331-3011, 331-3012, 331-3013, or 332-3011 Mounting Lug: 331-569 See Figure 8 through Figure 10 2. Weld the mounting lug parallel and 5/16-inch (8 mm) from the inside edge of the damper frame and perpendicular to it. See Figure 8. Weld the lug along both sides.
PAGE 10
Technical Instructions Document No. 155-029P25 December 3, 2004 POWERS™ Controls No. 6 Pneumatic Damper Actuator Frame Mounting - Type B, Continued Figure 9. Frame Mounting, Normally Open Damper. Figure 10. Frame Mounting, Normally Closed Damper. Actuator Mounting Table 5. Mounting Plate Hole Identification. Hole Used For 1 No. 6 Actuator extended shaft mounting. 2 Not used. 3 No. 4 Actuator extended shaft. No. 6 Actuator frame mounting NC 4 No. 6 Actuator frame mounting NO 5 No.
PAGE 11
POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Dimensions Figure 13. Extended Shaft Remote Mounting with Travel Stops. Dimensions in Inches (Millimeters). Offset Mounting Bracket This bracket is designed to offset Universal Mounting Plate 331-623 or 331-623A from the ductwork. NOTE: Depending on the application, two brackets may be required to support the actuator and universal mounting plate. Figure 14. Offset Mounting Bracket 333-176.
PAGE 12
Technical Instructions Document No. 155-029P25 December 3, 2004 POWERS™ Controls No. 6 Pneumatic Damper Actuator Dimensions, Continued Figure 15. Actuator Mounting Plate 331-623. Dimensions in Inches (Millimeters). Figure 16. No. 6 Actuator with the RL 147 Positioning Relay Mounting. Dimensions in Inches (Millimeters). Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced.