Technical Instructions Document No. 155-176P25 EA GBB/GIB-1 December 15, 2004 OpenAir™ GBB/GIB Series Electronic Damper Actuators NSR Rotary, 24 Vac - Modulating Control Description The OpenAir direct coupled 24 Vac non-spring return (NSR) rotary electric actuator is designed for modulating control of building HVAC dampers.
Technical Instructions Document Number 155-176P25 December 15, 2004 GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Warning/Caution Notations WARNING: Personal injury/loss of life may occur if you do perform a as specified. CAUTION: Specifications Power supply Control Signal Feedback Signal Equipment Rating Auxiliary Features Equipment damage or loss of data may occur if you do not follow a procedure as specified.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Function Torque GBB… GIB… Runtime for 90° opening or closing Mounting Nominal angle of rotation Maximum angular rotation Noise level Shaft size Housing Minimum shaft length Enclosure Specifications, Continued Ambient Conditions Material Gear lubrication Ambient temperature Operation Storage and transport Ambient humidity (non-condensing) Agency Approvals Technical Instructions Document Number 155-176P25 December 15, 2004 221 lb-in (25 Nm) 310
Technical Instructions Document Number 155-176P25 December 15, 2004 Accessories GBB/GIB Series NSR Rotary 24 Vac - Modulating Control NOTE: Neither the control signal adjustments nor the auxiliary switches can be added in the field. Order the product numbers that include these options. EA0477R2 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: (4 each) Figure 1.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Technical Instructions Document Number 155-176P25 December 15, 2004 ASK73.1U: Provides an extended antirotation pin that allows two modulating GIB actuators to directly drive a single damper shaft. For any combination of GIB161x and GIB166x actuators. Accessories, EA0496R1 Continued EA0497R1 Figure 5. Tandem Mounting Bracket. Figure 6. Special Shaft Adapter. Bracket must be ordered for tandem installation. ASK74.1U: Shaft adapter attaches to a 1.
Technical Instructions Document Number 155-176P25 December 15, 2004 GBB/GIB Series NSR Rotary 24 Vac - Modulating Control EA0499R1 EA0498R1 EA0500R1 Service Parts Figure 10. Position Indicator. 985-003 (package of 10) Figure 11. Standard Shaft Adapter. 985-004 Actuator Components Figure 12. Anti-rotation (Mounting) Bracket. 985-006 Legend 10 9 1 1. Positioning scale for angle of rotation 90 2. Span adjustment A B PUSH 11 3. Offset (start point) adjustment 8 7 6 4.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Operation Technical Instructions Document Number 155-176P25 December 15, 2004 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.
Technical Instructions Document Number 155-176P25 December 15, 2004 GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Operation, Continued Open the actuator from 0% to 50% (45°) using a control signal of Umin = 2V to Umax= 10V.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Sizing Technical Instructions Document Number 155-176P25 December 15, 2004 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/ft2 or 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.
Technical Instructions Document Number 155-176P25 December 15, 2004 GBB/GIB Series NSR Rotary 24 Vac - Modulating Control 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 13 for location on the actuators. • The tandem actuator pair is intended for use on the same mechanical load.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Mechanical Range Adjustment, Continued Technical Instructions Document Number 155-176P25 December 15, 2004 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 22. b. Hold down the PUSH button and rotate the shaft adapter to the left until it stops.
Technical Instructions Document Number 155-176P25 December 15, 2004 Reversing the Position Indicator GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Reverse the position indicator so that the counterclockwise 0 to 90 scale is visible. See Figure 26. POSITION INDICATOR 1 2 3 SH SH PU EA0551R2 PU Figure 26. 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.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Wire Designations Technical Instructions Document Number 155-176P25 December 15, 2004 Each wire has the standard symbol printed on it. See Table 2. 8 9 EA0284R1 S1 S4 A B S2 S3 S5 S6 M 1 2 Table 2. Wire Designations.
Technical Instructions Document Number 155-176P25 December 15, 2004 Start-Up/ Commissioning GBB/GIB Series NSR Rotary 24 Vac - Modulating Control 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.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Technical Instructions Document Number 155-176P25 December 15, 2004 WARNING: Service Do not open the actuator. If the actuator is inoperative, replace the unit. WARNING: Troubleshooting 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.
Technical Instructions Document Number 155-176P25 December 15, 2004 GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Dimensions, Continued min. 4 in. 100 mm 3-1/16 in. 78 mm M 3/4 20 1-1/8 in. 28 mm 11-13/16 in. 300 mm 3-3/8 in. 86 mm min. 8 in. min. 1/4 in. 7 mm 9 in 230 mm 200 mm EA0249R2 7-3/4 in. 197 mm 25/32 in 20 mm 1 in. 25 mm 5/32 in. 4 mm 1-11/32 1-11/32 34 mm 34 mm 3-15/16 in. min. 2-1/2 in.
GBB/GIB Series NSR Rotary 24 Vac - Modulating Control Technical Instructions Document Number 155-176P25 December 15, 2004 Dimensions, continued 3 1/8 in. 78 mm 1/2 in. 13.5 mm 9 in 230 mm 3 5/8 in. 92 mm EA0249R2 EA0768R1 9 in. 230 mm 1 13/16 in. 46 mm 25/32 in 20 mm 985-006 ASK73.1 Figure 29. Dimensions of the Mounting Brackets used in Tandem Applications in Inches (mm). min. 4 in. 100 mm 3-1/16 in. 78 mm MAX 3/4 in. 20 mm 1-1/8 in. 28 mm 11-13/16 in. 300 mm min. 1/4 in. 7 mm min.
