Siemens OpenAir GBB161.1U Owner's manual

Siemens Industry, Inc.
Technical Instructions
Document No. 155-176P25
EA GBB/GIB-1
June 22, 2015
OpenAir™ GBB/GIBSeries
Electronic Damper Actuators
Non-Spring Return, 24 Vac, Modulating Control
Description The OpenAir, non-spring return (NSR), 24 Vac, rotary, direct-coupled, electric actuator
is designed for modulating control of building HVAC dampers.
Features •Built-in feedback on modulating units
•Unique self-centering shaft coupling
•All metal housing
•Two torque ranges available
•Manual override
•Offset and span adjustment models available
•Independently adjustable dual auxiliary switches available
•UL, cUL and CE listed
Product Numbers Table 1.
24 Vac Operating Voltage
Torque Input Signal Cabling Standard Span/Off
set
Adjustable
Dual Auxiliary
Switches and
Span/Offset
Adjustable
Dual Auxiliary
Switches only
221 lb-in
(25 Nm) 0 to 10 Vdc
Standard
GBB161.1U
GBB163.1U
GBB164.1U
GBB166.1U
Plenum Cable
GBB161.1P
GBB163.1P
GBB164.1P
GBB166.1P
310 lb-in
(35 Nm) 0 to 10 Vdc
Standard
GIB161.1U
GIB163.1U
GIB164.1U
GIB166.1U
Plenum Cable
GIB161.1P
GIB163.1P
GIB164.1P
GIB166.1P
Application These actuators are used in constant or variable air volume installations for the control of supply
return air, mixed air, exhaust, rooftop units, and face and bypass dampers requiring up to 221 lb-in
(25 Nm) torque or 310 lb-in (35 Nm) torque.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 2 Siemens Industry, Inc.
Warning/Caution Notations
WARNING:
Personal injury/loss of life may occur if you do perform a procedure as
specified.
CAUTION:
Equipment damage or loss of data may occur if you do not perform a
procedure as specified.
Specifications
Power supply
Operating voltage (G–G0) 24 Vac ±20%
Frequency 50/60 Hz
Power consumption
Running… 8 VA, 8W
Holding… 1.1W
For one tandem application 12 VA
of two actuators
Control Signal
Input signal (Y–G0)
voltage-input 0 to 10 Vdc
Input resistance >100K ohms
Feedback Signal
Position output signal (U–G0)
Voltage-output 0 to 10 Vdc
Maximum output current DC 1 mA
Equipment Rating
Operating voltage, input signal and Class 2, in accordance with UL/CSA
position output signal
Plenum type actuators as a whole device Class 2, in accordance with UL/CSA
Auxiliary Features
Dual auxiliary switches
AC rating (standard cable) 24 to 250 Vac
AC 6A resistive
AC 2A general purpose
AC rating (Plenum cable) 24 Vac
AC 4A resistive
AC 2A general purpose
DC rating (Standard/Plenum cable) 12 to 30 Vdc
DC 2A
Switch Range
Switch A 0 to 90° with 5° intervals
Recommended range usage 0 to 45°
Factory setting 5°
Switch B 0 to 90° with 5° intervals
Recommended range usage 45 to 90°
Factory setting 85°
Switching hysteresis 2°
WARNING:
Apply only AC-line voltage from the same phase or only UL-Class 2 voltage (SELV
for CE conformance) to the switching outputs of both auxiliary switches A and B.
Mixed operation is not permissible.
NOTE: With plenum cables, only UL-Class 2 voltage (SELV for CE is
permissible).

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 3
Specifications,
Continued
Function
Torque
GBB… 221 lb-in (25 Nm)
GIB… 310 lb-in (35 Nm)
Runtime for 90° opening or closing 125 seconds at 60 Hz
150 seconds at 50 Hz
Nominal angle of rotation 90°
Maximum angular rotation 95°
Noise level <45 dBA
Mounting
Shaft size 3/8 to 1-inch (8 to 25.6 mm) diameter
1/4 to 5/8-inch (6 to 18 mm) square
Minimum shaft length 3/4-inches (20 mm)
Housing
Enclosure NEMA 2 in vertical position to 90°
to the left and right of vertical
See Figure 18
NEMA 3R rated when installed with
ASK75.1U Weather Shield in the
vertical position. See Accessories.
IP54 according to EN60529
Material Die cast aluminum alloy
Gear lubrication Silicone-free
Ambient Conditions
Ambient temperature
Operation -25°F to 130°F (-32°C to 55°C)
Storage and transport -40°F to 158°F (-40°C to 70°C)
Ambient humidity (non-condensing) 95% rh
Agency Approvals
UL listed to UL873
cUL certified to Canadian Standard
C22.2 No. 24-93
CE conformity:
Electromagnetic compatibility 2004/108/EC
Low-voltage directive 2006/95/EC
Miscellaneous
Pre-cabled connection 18 AWG
Cable length 3 feet (0.9m)
Life cycle Designed for over 60,000 full strokes
and a minimum of 1.5 million
repositions at rated torque and
temperature
Dimensions See Figure 30
Weight 4.4 lbs (2 kg)
Country of Origin USA

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 4 Siemens Industry, Inc.
Accessories NOTE: Neither the control signal adjustments nor the auxiliary switches can be
added in the field. Order the product numbers that include these options.
Figure 1. Floor Mount Kit.
ASK71.1U:
Kit allows foot mounting of
the OpenAir actuators. Kit should be used
for in
-the-air stream applications, and
anywhere a foot
-
mounted actuator can be
mounted. Kit contains:
•Crank arm that changes the angula
r
rotation into a linear stroke
•Support bearing ring to minimize
side loading on the actuator’s output
bearing
•Mounting bracket
•Required mounting fasteners
Figure 2. Frame Mount Kit.
ASK71.2U:
Kit allows mounting of
OpenAir a
ctuators directly to a damper
frame. Kit should be used with louvers
and vents and in applications where use
of the floor mount kit is not possible.
Kit contains:
•Crank arm that changes the angular
rotation into a linear stroke
•Support bearing ring to minimize
side loading on the actuator’s output
bearing
•Mounting bracket
•Required mounting fasteners
Figure 3. Crank Arm Kit.
ASK71.3: Kit allows a direct-coupled
actuator to provide an auxiliary linear
drive. Crank arm kit can be
used to
simultaneously drive a set of opposing or
adjacent dampers with a single actuator.
Kit contains:
•Crank arm that attaches to the
splined hub of the shaft adapter
•Other required mounting fasteners
Figure 4. Crank Arm Kit with Mounting
Bracket.
ASK71.4: Kit allows economical mounting
of OpenAir actuators to a variety of
surfaces. Kit should be used in
applications where the actuator can be
rigidly surface mounted and a linear
stroke output is required. Kit contains:
•Crank arm that attaches to the
splined hub of the shaft adapter
•Mounting bracket
•Required mounting fasteners

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 5
Accessories,
Continued
Figure 5. Tandem Mounting Bracket.
ASK73.1U:
Provides an extended anti-
rotation pin that allows t
wo modulating GIB
actuators to directly drive a single damper
shaft. For any combination of GIB161x
and GIB166x actuators.
Bracket must be ordered for tandem
installation.
Figure 6. Special Shaft Adapter.
ASK74.1U: Shaft adapter attaches to a
1.05
-inch (26.6 mm) diameter shaft;
whereas, the standard self
-centering
adapter accepts up to a 1.00
-inch (25 mm)
diameter shaft. This special adapter can be
used for coupling to 1
-inch jackshafts that
are slightly oversized.
Shaft adapt
er is 13/16-inches (20 mm)
shorter than the height of the self
-centering
shaft adapter.
985
-052P20:
Small shaft insert (package of
20) when using the GIB actuator on a
damper shaft less than 3/4
-inch (20 mm)
diameter.
Figure 7. NEMA 3R Weather Shield.
ASK75.1U: GBB and GIB Actuators are
UL listed to meet NEMA 3R requirements
(a degree of protection against rain,
sleet, snow and damage from external
ice formation) when installed with
ASK75.1U Weather Shield and outdoor-
rated conduit fittings in the vertical
position.
For dimensions, see Figure 28.
Figure 8. NEMA Type 4X Weather Shield.
ASK75.7U: GBB and GIB Actuators are
UL listed to meet NEMA Type 4X
requirements (a degree of protection
against falling dirt, rain, sleet, snow,
windblown dust, splashing water, hose-
directed water, corrosion, and damage
from external ice formation) when
installed with an ASK75.7U Weather
Shield and outdoor-rated conduit fittings.
This weather shield may be mounted in
any orientation.
For dimensions, see Figure 29.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 6 Siemens Industry, Inc.
Figure 9. Heater/Weather
Shield Assembly.
985-106: Provides protection for GIB,
GBB and GCA OpenAir actuators in an
outside low temperature. Assembly
includes:
•Weather Shield (ASK75.1U)
•Heater Kit (985-105)
Figure 10. Conduit Adapter.
985
-008: 1/2-inch (12 mm) for 1/2-inch
NPT connector.
Service Parts
Figure 11.
Position Indicator.
Figure 12.
Standard Shaft Adapter.
Figure 13.
Anti-rotation (Mounting) Bracket.
985-003
(package of 10)
985-004
985-006

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 7
Actuator
Components
Figure 14. Components of the Modulating
Actuator.
Legend
1. Positioning scale for angle
of rotation
2. Span adjustment
3. Offset (start point)
adjustment
4. Direction of rotation arrow
5. Connection cables
6. Manual override
7. Auxiliary switch B
8. Auxiliary switch A
9. Position indicator
10. Self-centering shaft
adapter
11. Shaft adapter locking clip
12. Position indicator adapter
13. Mounting bracket

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 8 Siemens Industry, Inc.
Operation
A continuous 0 to 10 Vdc signal from a controller to wire Y operates the damper
actuator. The angle of rotation is proportional to the control signal. A 0 to 10 Vdc
position feedback output signal is available between wires U and G0 (system neutral) to
monitor the position of the damper motor.
In the event of a power failure, depending on load, the actuator may not hold the
commanded (or new) position. In the event only the control signal is lost, the actuator
returns to the "0" position.
In the event of a blockage in the damper, the actuator is overload protected over the full
range to prevent damage to the actuator.
Life Expectancy An improperly tuned loop will cause excessive repositioning that will shorten the life of
the actuator.
Control Signal
Adjustment GBB/GIB 163x GBB/GIB 164x
The offset (start point) and span of the control signal can be adjusted. The offset point,
U0, (start point) can be adjusted between 0 to 5 Vdc. The span, ∆U, can be adjusted
between 2 to 30 Vdc.
Ys Mechanical positioning range
(100% = angle of rotation 90°)
Yu Control signal
U0 Offset (start point)
∆U Span
1. Uo =0V, ∆U = 2V Minimum working range
for Ys = 100%
2. Uo = 5V, ∆U = 30V Maximum working range
for Ys = 100%
3. Uo = 0V, ∆U ≈10V Factory setting
Setting for
10V span
0 offset
Figure 15. Minimum, Factory Setting, and
Maximum Control Signal Adjustment.

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 9
Operation,
Continued
Control Signal
Adjustment Example
Open the actuator from 0% to 50% (45°) using a control signal of Umin = 2V to Umax =
10V.
Calculating the value of ∆U:
∆
U
100 [%] x
(U max
U min)
Working angle of rotation [%]
100% x (10V - 2V)
50%
16
V
=
−
=
=
Settings:
Uo = 2V; ∆U = 16V
Umin = minimum control signal
Umax = maximum control signal
Figure 16. Example.
Dual Auxiliary Switch GBB/GIB 164x, and GBB/GIB 166x
Actuator Scale:
Clockwise
Adjustment range for Switches A and B
Setting interval: 5°
Switching hysteresis: 2°
Actuator Scale:
Counterclockwise
NOTE:The auxiliary switch setting shafts turn together with the actuator. The scales are
valid only when the actuator is in the "0" position on clockwise motion.
To change the settings of A and B, use a
flat-blade screwdriver to turn the switch
adjustment dials to the desired setting at
which a signal is to be given.
Factory setting
Switch A 5°
Switch B 85°
Figure 17. Dual Auxiliary Switch Dials.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 10 Siemens Industry, Inc.
Sizing The number of actuators required depends on several factors. To determine the quantity
of actuators required for the installation, do the following:
1. Obtain damper torque ratings (ft-lb/ft2or Nm/m2) 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 × Damper Area
4. Select the total quantity of actuators required:
Number of actuators =
Total Damper Torque required
SF x Actuator Torque (Refer to Specifications)
1
1Safety Factor: When calculating the number of actuators required, a safety factor
should be included for unaccountable variables such as slight misalignments, aging
of the damper, etc. A suggested safety factor is 0.80 (or 80% of the rated torque).
Mounting and
Installation
Figure 18. Acceptable NEMA 2
Positions.
Figure 19. Acceptable NEMA 2 Position
for Tandem Applications.
•The direction of rotation switch must be set to match the clockwise or
counterclockwise rotation of the damper shaft. The factory setting is clockwise. See
Figure 14 for location on the actuator.
Figure 20. Direction of Rotation Switch.
•The minimum damper drive shaft length is 3/4-inches (20 mm). The shaft length
determines whether the shaft adapter will be mounted on the front or back side of
the actuator.
•See Specifications for minimum and maximum damper shaft dimensions.
•The shaft adapter can be mounted on either side of the actuator. The direction of
rotation and shaft length determine how the shaft adapter will be mounted on the
actuator.
•The position indicator can be mounted to show either the clockwise or
counterclockwise 0 to 90 scale.
•The actuator is shipped from the factory with a 5° pre-load to ensure tight close off
of the damper.
•The shaft adapter and mounting parts are shipped in a separate container with the
actuator.
•Detailed mounting instructions are included with each actuator.

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 11
Mounting and
Installation, continued
•The direction of rotation switches must be set identically on both actuators
according to the clockwise or counterclockwise rotation of the damper shaft.
The factory setting is clockwise. See Figure 14 for location on the actuators.
•The tandem actuator pair is intended for use on the same mechanical load.
•Minimum damper drive shaft length is 4-inches (100 mm).
Tandem Applications
CAUTION:
No more than three actuators are to be used in tandem applications.
Manual override
To move the damper blades when
power is not present:
1. Hold down the PUSH button.
2. Make adjustments to the damper
position.
3. Release the PUSH button.
NOTE: If there is no load, the
actuator will hold the new
damper position. If load
conditions exist, the actuator
might not be able to hold.
Once power is restored, the actuator
returns to automated control.
Figure 21. Manual Override.
Mechanical Range
Adjustment The angular rotation is adjustable
between 0 and 90° at 5-degree
intervals. The range of shaft
movement is limited by mounting the
shaft adapter:
1. Loosen the shaft adapter from the
damper shaft and remove the
actuator from the damper shaft.
2. Remove the clip and shaft adapter
from the actuator.
Figure 22.
Figure 23.
Figure 24.
Figure 25.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 12 Siemens Industry, Inc.
Mechanical Range
Adjustment,
Continued
3. Return the actuator gear train to the "0" position using the steps that follow for the
clockwise or counterclockwise damper shaft rotation.
Clockwise-to-open:
a. Insert the shaft adapter to the right as close as possible to the raised stop. See
Figure 23.
b. Hold down the PUSH button and rotate the shaft adapter to the left until it stops.
See Figure 24.
c. Release the PUSH button.
d. If the shaft adapter is not resting against the left raised stop, remove the adapter
and insert it against the left stop.
e. Place the position indicator to the "0" position on the outside scale.
See Figure 25.
Counterclockwise-to-open:
a. Insert the shaft adapter to the left as close as possible to the raised stop.
b. Hold down the PUSH button and rotate the shaft adapter to the right until it stops.
c. Release the PUSH button.
d. If the shaft adapter is not resting against the right raised stop, remove the adapter
and insert it against the right stop.
e. Place the position indicator to "0" on the inside scale.
4. Determine the angle of rotation for the damper blade shaft. Subtract that amount from 90°.
5. Remove the shaft adapter and insert it with the position indicator pointing to mark on the
scale calculated in the previous step. See Figure 26.
6. Attach the clip.
7. Rotate the damper blade shaft to its "0" position.
8. Return the actuator to the damper shaft and tighten the shaft adapter to the damper shaft.
Figure 26. Mechanical Range Adjustment.

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 13
Reversing the Position
Indicator Reverse the position indicator so that the counterclockwise 0 to 90 scale is visible. See
Figure 27.
Figure 27. Position Indicator.
Wiring All wiring must conform to NEC and local codes and regulations.
Use earth ground isolating step-down Class 2 transformers. Do not use
autotransformers.
The maximum rating for a Class 2 step-down transformer is 100 VA. Determine the
supply transformer rating by summing the VA ratings of all actuators and all other
components used. It is recommended that one transformer power no more than 10
actuators (or 80% of its VA).
WARNINGS:
•Mixed switch operation is not permitted to the switching outputs of both
auxiliary switches (A and B).
•Either AC line voltage from the same phase must be applied to all six
outputs of the dual auxiliary switches, or UL-Class 2 voltage must be
applied to all six outputs.
NOTE: With plenum cables, only UL-Class 2 voltage is permitted.
CAUTION:
Do not parallel wire GBB/GIB with any other type of actuator, including
GBB/GIB actuators with date codes earlier than 501.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 14 Siemens Industry, Inc.
Wire Designations Each wire has the standard symbol printed on it. See Table 2.
Table 2. Wire Designations.
Standard
Symbol Function Terminal Designations
Color
1
Supply (SP)
G
Red
2
Neutral (SN)
G0
Black
8
0 to 10 Vdc
Y
Gray
9
Output for 0 to 10 Vdc position indication
U
Pink
S1
Switch A – Common
Q11
Gray/red
S2
Switch A – Normally Closed
Q12
Gray/blue
S3
Switch A – Normally Open
Q14
Gray/pink
S4
Switch B – Common
Q21
Black/red
S5
Switch B – Normally Closed
Q22
Black/blue
S6
Switch B – Normally Open
Q24
Black/pink

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 15
Start-Up/
Commissioning 1. Check that offset (start point) and span are set correctly, if used.
2. Check that the direction of the rotation switch matches the rotation of the damper shaft.
3. Check the operation:
a. Connect wires 1 (red) and 2 (black) to the actuator.
b. Set the DMM dial to Vdc.
c. Connect wires 2 (black) and 8 (gray) to a Digital Multimeter (DMM).
d. Apply a full-scale input signal (10 Vdc) to wire 8 (gray).
e. Allow the actuator shaft coupling to rotate from 0 to 90.
f. Disconnect wire 8 (gray) and the shaft coupling returns to the “0” position.
4. Check the Feedback:
a. Set the DMM dial to Vdc.
b. Attach wires 2 (black) and 9 (pink) to the DMM.
c. Apply a full-scale input signal to wire 8 (gray).
The reading at the DMM should increase.
e. Remove the signal from wire 8 (gray). The reading at the DMM should decrease and
the actuator shaft coupling returns to the “0” position.
5. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM. The DMM should indicate open circuit or no
resistance.
c. Apply a full-scale input signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch A.
d. Connect wires S1 and S2 to the DMM. The DMM should indicate open circuit or no
resistance.
e. Stop the signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch A.
6. Check the Auxiliary Switch B:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S4 and S6 to the DMM. The DMM should indicate open circuit or no
resistance.
c. Apply a full-scale input signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch B.
d. Connect wires S4 and S5 to the DMM. The DMM should indicate open circuit or no
resistance.
e. Stop the signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch B.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
Page 16 Siemens Industry, Inc.
Service
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
Troubleshooting
WARNING:
To avoid injury or loss of life, pay attention to any hazardous voltage (for example, 120 Vac)
when performing checks.
•Check that the wires are connected correctly.
•Check that offset (start point) and span are set correctly, if used.
•Check that the direction of rotation switch matches the rotation of the damper shaft.
•Connect wires 1 (red) and 2 (black) to a Digital Multimeter (DMM) with the dial set at Vac to
verify that the operating voltage is within range.
•If the actuator is not working, check the damper for blockage. If blocked, remove the
obstacle and cycle the actuator power off and on. The actuator should resume normal
operating mode.
Dimensions
Figure 28. Dimensions of the ASK75.1U Weather Shield in Inches (Millimeters).
Figure 29. Dimensions of the ASK75.7U Weather Shield in Inches (Millimeters).

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc. Page 17
Dimensions, Continued
Figure 30. Dimensions of the GBB/GIB Actuator and Mounting Bracket in Inches (mm).

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Document Number 155-176P25
June 22, 2015
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. Product or company names mentioned herein
may be the trademarks of their respective owners. © 2015 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA
+ 1 847-215-1000
Your feedback is important to us. If you have
comments about this document, please send them
to [e-mail]
Document No. 155-176P25
Printed in the USA
Page 18
Dimensions, continued
ASK73.1
985-006
Figure 31. Dimensions of the Mounting Brackets used in Tandem Applications in Inches (mm).
Figure 32. Dimensions and Service Envelope of the GIB Actuators in Tandem Application in Inches (mm).