Greenheck 331-2856 User Manual

Technical Instructions

Document No. 152-013P25

April 28, 2003

Powers™ Controls

No. 6 Pneumatic Damper Actuator

Basic Actuator Typical Actuator with Clevis and Pin Actuator with Extended Shaft and

Description

Features

The No. 6 Pneumatic Damper Actuator is a heavy-duty, rolling diaphragm, spring return
actuator designed to drive large dampers, centrifugal fan inlet vanes, and other
applications requiring a large effective diaphragm area and long stroke.

• Replaceable ozone-resistant silicone rubber rolling diaphragm

• Safe for use in automotive industry applications

• Pivot mounting for extended shaft or frame mounting

OEM Literature

Frame Mounting Accessories

Product Numbers
Application

• Positioning relay (optional)

• Adjustable forward travel stops (optional)

• Three spring ranges

See Table 1
The No. 6 Pneumatic Damper Actuator is recommended for control of 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 under UL’s
Damper Actuator category (EMKU2). This category covers pneumatic
damper actuators used on fire dampers and fire/smoke leakage rated
dampers. Complies with UL's 400°F heated air requirements.

Siemens Building Technologies, Inc.

Technical Instructions Powers™ Controls No. 6 Pneumatic Damper Actuator
Document Number 152-013P25
April 28, 2003

Table 1. Product Numbers for No. 6 Pneumatic Damper Actuators.

Description

Basic Actuator only Pivot 331-2793 331-2794
Basic Actuator only (Marine Finish) Pivot 331-2884
Actuator, with forward travel stops (Figure 1) Pivot – 331-2796 331-2988
Pivot Mount Actuator with clevis, clevis pin, and hitch

pin clip
Same as above with positioner (Figure 6) Pivot – – 332-2856
Actuator and manufacturing assembly for extended

shaft and frame mounting
Same as above with positioner (Figure 6) Universal kit with

Mounting Style

3-8 psi

(21-55 kPa)

Pivot 331-2857 331-2858

Universal kit 331-3012 331-3013

– – 332-3011

positioner

Part Number

Nominal Spring Range

3-13 psi

(21-90 kPa)

8-13 psi

(55-90 kPa)

331-3060*

331-2856*

331-3011*

* UL Recognized Component.

NOTE: Kits must be ordered separately from damper manufacturer.

Specifications

Effective Diaphragm Area 17.9 inch2 (115 cm2)
Stroke 4 inch (102 mm)
Housing Aluminum
Shaft Stainless steel
Diaphragm Ozone-resistant silicone rubber

(contains no migrating silicone lubricant)
Maximum Air Pressure 30 psig (210 kPa)
Nominal Spring Ranges 3 to 8 psi (21 to 55 kPa)

3 to 13 psi (21 to 90 kPa)
8 to 13 psi (55 to 90 kPa)
Ambient Temperature Range
Operating -20°F to 200°F (-29°C to 93°C)
Storage

Air Connection 1/8-inch NPT
Type of Mounting Pivot
Thrust and Torque Rating See Table 2
Dimensions See Figure 3 through Figure 6
Agency Approvals Complies with UL555 and UL555S

400°F heated air requirem ents

Table 2. Thrust Torque Ratings.

Nominal

Spring
Range

15psi

(103 kPa)

3-8 psi

(21-55 kPa)

3-13 psi

(21-90 kPa)

8-13 psi

(55-90 kPa)

* With maximum hysteresis of 2.5 psi (17.2 kPa) @ 90° rotation.

Page 2 Siemens Building Technologies, Inc.

125 (556) 179 (796) 304 (1352)

36 (160) 89 (396) 214 (952) 54 (240) 50 (5.6) 50 (5.6) 75 (8.5) 75 (8.5)

36 (160) 89 (396) 214 (952) 144 (640) 50 (5.6) 50 (5.6) 125 (14) 202 (23)

Maximum Thrust lbs. (N) Torque Rating* lb-in (Nm)

Full Stroke Forward 2-Position Operation

Spring
Return

18 psi

(124 kPa)

25 psi

(172 kPa)

(No Stroke)

0 psi (0 kPa)

54 (240) 50 (5.6) 75 (8.5) 75 (8.5) 75 (8.5)

Gradual

Operation

15 psi

(103 kPa)

or Positioner

18 psi

(124 kPa)

25 psi

(172 kPa)

Powers™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions
Document Number 152-013P25
April 28, 2003

NOTE: The No. 6 Pneumatic Damper Actuator does not require any periodic cycling. However, it is strongly

suggested that all systems are functionally checked periodically, and per local codes and ordinances.

Accessories

Damper shaft extension kits:
1/2-inch (13 mm) diameter (See TB-128) 331-631
1/2-inch (13 mm) diameter, 9-inch (229 mm) long,

hollow rod 333-184
1/2-inch (13 mm) diameter, 9-inch (229 mm) long 333-042
1-inch (25 mm) diameter, 11-5/8-inch (295 mm) long 333-194
Actuator shaft extensions:
10-1/8 inch (257 mm) long 331-434A
Adapter kit for 1/2 inch NPT pipe 333-030
Damper shaft extension kit adapter - 3/8 inch (9.5 mm) 331-632
Cranks—damper shaft:
3/8-inch (9.5 mm) - 1/2 inch (13 mm) diameter,

selectable radius 331-941
5/8-inch (16 mm) diameter 333-182
3/4-inch (19 mm) diameter 333-183
1-inch (25 mm) diameter 333-181
Cast iron crank with setscrews 333-078
Linkage kit (4-inch, 102 mm, link and crank) 331-958
Remote mounting kit (extended shaft) 331-618
Universal mounting plate

3/4-inch damper shaft 331-623
1-inch damper shaft (use with 333-194) 331-623A

Right angle mounting plate 333-208
Bearing 331-862
Positioning relay 147-2000
Positioning relay mounting kit 147-276
Mounting lug 331-569
Screws (three required for frame mounting lug) 034-123K
Offset mounting bracket 333-176
Travel stop rods 333-197

Service Kits

Siemens Building Technologies, Inc. Page 3

Diaphragms (Package of five) 333-572