Siemens Building Technologies OpenAir GCA Series Catalog Page
Electronic Damper Actuator
Siemens
Product Guard
Warranty
Spring Return
OpenAir
TM
GCA Series
Easily Replaces:
• Belimo AF Series
160 lb.-in. Torque
24 Vac/dc, 2-position Control
120 Vac, 2-position Control
24 Vac/dc, Floating Control
24 Vac/dc, 0 to 10 Vdc/2 to 10 Vdc, Modulating Control
Description
Designed for control of building HVAC dampers, the
OpenAir GCA Series Direct-coupled, Spring Return
Electronic Actuators are available in 0 to 10 Vdc or 2 to 10
Vdc modulating, oating and two-position (on/off) control
models.
Features
• 24 Vac/dc compatible
• Visible position indication
• Self-centering shaft coupling
• Bidirectional fail-safe spring return
• Rugged all metal housing
• Accepts shaft diameters up to 1" (25 mm)
• Quiet, low-power operation
• Brushless DC motor technology with stall protection
• Assembled in the U.S.A.
• Manual override
• Precabled
• All modulating types contain built-in feedback
GCA Series Spring Return
Electronic Damper Actuator.
Applications
The OpenAir GCA Series Damper Actuators are ideal for
constant or variable air volume installations for the control
of return air, mixed air, exhaust, and face and bypass
dampers that require up to 160 lb.-in. (18 Nm) torque.
The actuators are designed for applications where the
damper is required to return to a fail-safe position when
there is a power failure.
Models are available with either an appliance cable for
wiring in conduit or a plenum-rated cable for applications
where conduit is not required.
B-11
Damper Actuators
Options
• Independently adjustable dual auxiliary switches
• Potentiometer for oating models
• Adjustable span and offset
• Signal inversion
Siemens
Product Guard
PLUS 3 Warranty
www.usa.siemens.com/hvac
GCA Series Specifications
B-12
Operating Voltage (1–2)
GCA1xx ...................................................... 24 Vac ±20%, 24 Vdc ±10%
GCA22x ........................................................................... 120 Vac ±10%
Frequency .............................................................................. 50 to 60 Hz
Power Consumption
GCA15x.xx & GCA16x.xx
Running ............................................................................ 9 VA (7 W)
Holding ............................................................................. 5 VA (4 W)
GCA12x.xx AC 24 Vac/dc
Running ............................................................................ 8 VA (6 W)
Holding ............................................................................. 3 VA (3 W)
GCA22x.xx AC 120 Vac
Running ............................................................................ 9 VA (7 W)
Holding ............................................................................. 9 VA (7 W)
GCA13x.xx AC 24 Vac/dc
Running ............................................................................ 8 VA (6 W)
Holding ............................................................................. 5 VA (4 W)
Input Signal (8–2)
GCA16x
Voltage-input.............................................0 to 10 Vdc (max. 35 Vdc)
Input Resistance .......................................................... >100 K Ohms
GCA15x
Voltage-input......................0 to 10 Vdc or 2 to 10 Vdc (max. 35 Vdc)
Input Resistance .......................................................... >100 K Ohms
Position Output Signal (9–2)
GCA16x/GCA15x
Voltage-output ................................................................. 0 to 10 Vdc
Max. Output Current ................................................................ ±1 mA
Equipment Rating for Operating Voltage,
Input Signal, and Position Output Signal ...................................Class 2
Control Signal Adjustment
Offset (start point) ................................................................... 0 to 5 Vdc
Factory setting .............................................................................. 0 V
Span .................................................................................... 2 to 30 Vdc
Factory setting ............................................................................ 10 V
Dual Auxiliary Switch
Contact Rating
Standard Cable............................ 6 A resistive, 2 A General Purpose
Plenum Cable .............................. 4 A resistive, 2 A General Purpose
Voltage
Standard Cable.............................................................24 to 250 Vac
Plenum Cable ..........................................................................24 Vac
Switch Range
Switch A .......................................................0 to 90° with 5° intervals
Recommended Range........................................................... 0 to 45°
Switch B.......................................................0 to 90° with 5° intervals
Recommended Range......................................................... 45 to 90°
Switching Hysteresis ........................................................................... 2°
Position Feedback
GCA132.1x ....................................................... 0 to 1000 Ohm <10 mA
Torque
Running Torque ........................................................160 lb.-in. (18 Nm)
Spring Return ...........................................................160 lb.-in. (18 Nm)
Max. Torque ............................................................<380 lb.-in. (43 Nm)
Runtime for 90° operating with motor ................................. 90 seconds
Closing (on power loss) with Spring Return ......................... 15 seconds
Nominal Angle of Rotation ................................................................90°
Max. Angular Rotation ....................................................................... 95°
Temperature
Operation...................................................-25 to +130°F (-32 to +55°C)
Storage and Transport...............................-40 to +158°F (-40 to +70°C)
Humidity ...........................................................95% RH, non-condensing
Shaft Size ....................................................3/8 to 1-in. (8 to 25 mm) Dia.
1/4 to 3/4-in. (6 to 18 mm) Sq.
Min. Shaft Length ............................................................ 3/4-in. (20 mm)
Housing Enclosure .................................................................... NEMA 2*
Material ................................................................ Die-cast Aluminum alloy
Pre-cabled Connection .............................................................. AWG 18
Cable Length .......................................................................... 3 ft. (0.9 m)
Agency Approvals ........................................................................ UL 873
cUL C22.2 No. 24-93
CE
Dimensions ..................................................... 12" H x 4.75" W x 2.88" D
(305 mm H x 121 mm W x 73 mm D)
Shipping Weight ..............................................................4.85 lb. (2.2 kg)
*Refer to Installation Instructions for acceptable mounting positions.
Damper Actuators
GCA Series Product Ordering
Input Signal Cabling
Standard GCA161.1U GCA163.1U GCA164.1U GCA166.1U —
0 to 10 Vdc, 24 Vac/dc
0 to 10 Vdc or 2 to 10 Vdc
Modulating 24 Vac/dc,
(Signal Inversion)
2-position, 24 Vac/dc
2-position,120 Vac
Floating, 24 Vac/dc
Ordering Note Bulk packages contain 8 actuators.
Plenum Cable GCA161.1P GCA163.1P GCA164.1P GCA166.1P —
Plenum Cable/Bulk GCA161.1P/B — — — —
Standard GCA151.1U — — GCA156.1U —
Plenum Cable GCA151.1P — — GCA156.1P —
Standard GCA121.1U — — GCA126.1U —
Standard/Bulk GCA121.1U/B — — — —
Plenum Cable GCA121.1P — — GCA126.1P —
Standard GCA221.1U — — GCA226.1U —
Standard/Bulk GCA221.1U/B — — — —
Standard GCA131.1U — — GCA136.1U GCA132.1U
Plenum Cable GCA131.1P — — GCA136.1P GCA132.1P
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Standard
Span/Offset
Adjustable
Part No.
Dual Aux. Switches
& Span/Offset
Adjustable
Dual Aux.
Switches
Only
Position
Feedback
Only
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