Installation Instructions

ManualsBrandsSiemens ManualsDampersGCA Series Spring Return 142 lb-in Electronic Damper Actuator w/ Standard Cable

Document No. 129-404

April 13, 2020

OpenAir

GCA Spring Return

Rotary Electronic Damper Actuator

Item Number: 129-404 Rev. KA Page 1 of 7

a. Actuator

b. Self-centering shaft adapter

b’. Oversized shaft adapter

c. Position indicator

d. Shaft adapter locking clip

e. Position indicator adapter

f. Mounting bracket

g. Mounting screws

h. 3 mm hex key

i. Conduit adapter 1/2-inch

(Not available to GCAxxx.xP models)

j. 500 ohm resistor (GCA15x.xx only)

Figure 1. Parts of the GCA Actuator.

Product Description

Describes the steps for direct-coupled mounting of the

OpenAir GCA spring return electronic damper actuators.

Product Numbers

GCAx

Warning/Caution Notations

WARNING:

Personal injury or loss of life

may occur if you do not follow a

procedure as specified.

CAUTION:

Equipment damage or loss of

data may occur if you do not

follow a procedure as specified.

Required Tools

• 10 mm (13/32-inch) open-end wrench

• Drill and 4 mm (5/32-in) drill bit

• 3 mm hex key (provided)

• Phillips screwdriver

• Small flat-blade screwdriver

• Marker or pencil

Additional for oversized shaft adapter:

• 10 mm (13/32-inch) socket wrench

• 6 mm hex key

Expected Installation Time

30 minutes

WARNING:

Do not open actuator.

CAUTION:

Do not turn the 3 mm hex key against the

direction of the arrow.

Mounting Positions

Figure 2. Acceptable NEMA 2-Positions.

Figure 3. Only Acceptable Position for NEMA Type 3R

Rating Using ASK75.1U Weather Shield.

The GCA actuator is UL listed to meet NEMA Type 3R

requirements (a degree of protection against rain, sleet,

and damage from external ice formation) when installed

with the Weather Shield (product number ASK75.1U) and

outdoor-rated conduit fittings. Actuator must be in the

vertical position.

Prerequisites

NOTE: Actuator is shipped from the factory with 5°

preload. When power is applied to the actuator,

the preload is released. To manually release the

preload, insert the 3 mm hex key in the override

opening and turn the key in the direction of the

arrow. See Manual Override.

Summary of content (7 pages)

PAGE 1
Installation Instructions Document No. 129-404 April 13, 2020 OpenAir® GCA Spring Return Rotary Electronic Damper Actuator a. b. b’. c. d. e. f. g. h. i. Actuator Self-centering shaft adapter Oversized shaft adapter Position indicator Shaft adapter locking clip Position indicator adapter Mounting bracket Mounting screws 3 mm hex key Conduit adapter 1/2-inch (Not available to GCAxxx.xP models) j. 500 ohm resistor (GCA15x.xx only) Figure 1. Parts of the GCA Actuator.
PAGE 2
Document No. 129-404 Installation Instructions April 13, 2020 Installation Table 1. Actuator Positioning and Damper Control. Page 2 of 7 Siemens Industry, Inc.
PAGE 3
Document No. 129-404 Installation Instructions April 13, 2020 Installation, Continued Figure 4. Shaft Length and Proper Shaft Adapter Location. NOTE: If the damper fail-safe position is open, change the actuator preload from the factory-set 5° to 85°. See Manual Override. Figure 6. Place the Actuator on the Shaft. Figure 5. Close the Damper. Figure 7. Fasten the Mounting Bracket. Siemens Industry, Inc.
PAGE 4
Document No. 129-404 Installation Instructions April 13, 2020 Mechanical Range Adjustment Manual Override Figure 10. The Angular Rotation is Adjustable Between 0° and 90° at 5 Degree Intervals. Figure 9. Manual Override. To use manual override or set preload, do the following: (Figure 9) Ensure that the actuator is in the 0 (fail-safe) position when making this adjustment. If making the adjustment before the actuator is in service, take into account the factory set 5° preload.
PAGE 5
Document No. 129-404 Installation Instructions April 13, 2020 Wiring Diagrams Modulating 0 to 10 Vdc Control, 24 Vac: GCA16x Modulating 2 to 10 Vdc Control, 24 Vac/dc: GCA15x 2-position Control, 24 Vac/dc: GCA12x Figure 12. Tandem Mounting on Each End of Damper Shaft. References OpenAir™ Spring Return Electric Damper Actuator Modulating Control Technical Instructions (155-173P25). OpenAir™ Weather Shield Kits Installation Instructions (129-261).
PAGE 6
Document No. 129-404 Installation Instructions April 13, 2020 Table 2. Wire Designations.
PAGE 7
Document No. 129-404 Installation Instructions April 13, 2020 Dimensions Figure 13. Dimensions of the ASK75.1U Weather Shield in Inches (Millimeters). Figure 14. Dimensions of the GCA OpenAir Actuator and Mounting Bracket 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. OpenAir is a registered trademark of Siemens Schweiz AG.