Greenheck 331-4551 Installation Manual

Alt.

1.93

Cont

ol Shaf

Damper

1.75

1 in. (25mm) Dia. Jackshaft Hardware Replaces Item 6, 7, & 8 (supplied with damper)

Part Number 454201

! !

Siemens #3 Actuator

Model 331-4551 & 332-4551

UL Listed Pneumatic Actuator with Spring Return

INSTALLATION INSTRUCTIONS

These instructions apply to the external field installation of Siemens actuators on Greenheck models VCD Control Dampers when they are duct mounted or sleeved.

This Siemens pneumatic actuator has an 8 square inch effective diaphragm area and a 23/4 in. stroke. It extends to its holding position when air pressure is applied and spring returns to its fail position when the air supply is interrupted. This model has a maximum air pressure of 25 psi.

Tools Required:

(1) 3/8, (2) 1/2, and (1) 7/16 in.

Part No. Quantity Description 1 1 Actuator Siemens #3 2 1 Swivel (assembled to actuator) 3 1 Post (assembled to actuator) 4 1 Clevis (assembled to actuator) 5 2 6 1 7 1 8 1 9 1 10 1 Hitchpin Cotter

Wrenches:

WARNING

Equipment Damage or Electrical Power Hazard. Line voltage can cause death or serious injury and short equipment circuitry. Disconnect power supply before installation.

/8 in.-24 Hex Nut (assembled to actuator)

/2 in. Crankarm

/16 in. -18 x 1 1/2 in. Bolt

/16 in. -18 Spinlock Nut

/4 in. x 1/2 in. Clevis Pin

CAUTION

Device Malfunction Hazard. Improper set screw tightening causes device malfunction. Tighten set screws with proper torque to prevent damper shaft slippage.

Part No. Quantity Description 11 4 12 4 13 1 Mounting Bracket 14 1 Ball Bearing 15 1 Stand Off Bracket 16 4 17 2 #10 TEK Screw 18 1 19 1 1 in. Crankarm (Knurled) 20 1

/4-20 x 1/2 in. Bolt

/4-20 Spinlock Nut

/4-20 x 1/2 in. Self Threading Screw

/8-16 x 2 1/2 in. Carriage Bolt

/8-16 Spinlock Nut ZP

90°

1.938

Instructions:

These installation instructions assume the damper is already mounted in a duct or sleeve with the damper shaft extending beyond the duct or sleeve 6 inches.

1. Install the stand off bracket.

Dampers with a jackshaft

1a. Mount the stand off bracket onto the jackshaft bracket with (4) 1/4-20 X 1/2 in. thread cutting screws, #16. Orient the anchor bracket perpendicular to the damper on the duct or sleeve so that the bracket's shaft hole is centered on the jackshaft.

Dampers without a jackshaft (Shaft Extension)

1b. Mount the stand off bracket spanning across the damper frame flanges. Orient the anchor bracket perpendicular to the damper on the duct or sleeve so that the bracket's shaft hole is centered on the shaft extension. Fasten to the damper frame with (4) supplied by others. Be sure not to run the screws into the damper linkage, which is between the flanges.

#14 Tek screws or equal,

SIEMENS #3INSTRUCTIONS

Orientation of Stand Off

Bracket for a jackshaft

driven damper

Crankarm Orientation and Actuator Assembly Location for Counter Clockwise Fail Rotation

Orientation of Stand Off

Bracket for a directly

driven damper

2. Mount the actuator and all factory assembled actuator parts to the mounting bracket (#13) with the (2

)5/16 in.-18 hex nuts supplied on the actuator assembly. Attach the assembly to the bracket using the post (#3) through the hole illustrated to the right on the diagram that corresponds to the correct fail direction.

Note: All fail rotations refer to the damper shaft rotation needed to achieve the desire blade fail position. Inspect the damper blades and the damper shaft to determine the proper damper shaft rotation for the desired blade fail position.

3. Mount the mounting bracket to the stand off bracket using (4)

1/4 in.-20 x 1/2 in. bolts, #11, and (4) 1/4 in. - 20 Spinlock nuts, #12, included with this kit. Use the outer four holes of the mounting bracket for jackshafted models and the inner four holes for directly driven models.

Note: The mounting bracket may be attached in three positions: parallel with the duct, perpendicular up from the duct, or perpendicular down from the duct. Choose a position that offers the most clearance for the application.

4. Note the damper shaft rotation for fail direction and position the crankarm in one of the positions shown in the illustrations to the right. Do not tighten the crankarm to the damper shaft.

5. Attach the crankarm to the clevis on the actuator with the clevis pin, #9, and the hitchpin cotter, #10, through the hole labled “B” to the right. Position the damper blades in the desired fail position (open or closed). Tighten the crankarm to the damper shaft.

Actuator Assembly is fastened to the mounting plate through one of these holes

Crankarm Orientation and Actuator Assembly Location for Clockwise Fail Rotation

6. Run the supply pressure to the actuator and regulate it to a maximum of 25 psi.

7. Apply air pressure to the actuator.

The damper blades should fully open or close

and return to the fail position when power is disconnected, if they do not, adjustments can be made by resetting the crankarm position on the damper or actuator shaft or by changing the distance from the actuator face to the center of the hole in the clevis.

454201 Siemens #3 Rev. 4 October 2006