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OpenAir™

Technical Instructions

Document No. 155-760

EA GQD

June 23, 2008

Spring Return, 20 lb-in (2 Nm), Rotary

GQD Series, Electronic Damper Actuators

Siemens Building Technologies, Inc.

Description

The OpenAir GQD Series direct-coupled spring return electronic actuator is designed

for modulating, two-position, and floating control of building HVAC dampers.

Features

• Bi-directional spring return (fail-safe)

• Pre-cabled

• Plenum-rated models available

• Fast run time

• Available in 20 lb-in (2 Nm) torque

• Signal inversion capability on modulating types (2 to 10 Vdc or 10 to 2 Vdc)

• UL and cUL listed, CE certified

• Compact footprint

• Low voltage models are 24 Vac/dc compatible

• 120 Vac model with 1/2" NPT conduit connection

Application

Used in constant or variable air volume installations for the control of return air, mixed

air, exhaust, and face and bypass, and residential zone dampers requiring up to 20 lb-

in (2 Nm) torque.

Designed for applications that require the damper to return to a fail-safe position when

there is a power failure.

Summary of content (12 pages)

PAGE 1
Technical Instructions Document No. 155-760 EA GQD June 23, 2008 OpenAir™ Spring Return, 20 lb-in (2 Nm), Rotary GQD Series, Electronic Damper Actuators Description The OpenAir GQD Series direct-coupled spring return electronic actuator is designed for modulating, two-position, and floating control of building HVAC dampers.
PAGE 2
Technical Instructions Document Number 155-760 June 23, 2008 OpenAir Spring Return 20 ib-in, Rotary GQD Series, Electronic Damper Actuators Product Numbers GQD121.1P GQD131.1P GQD151.1P GQD221.1U z z z — — — — z z — — z Floating Modulating 2 to 10 Vdc/ 10 to 2 Vdc Control Signals 2-Position 120 Vac Product Number* 24 Vac/dc Voltage — z — — — — z — Plenum Cabling Table 1. z z z — *Add /B to part numbers to order bulk pack of 10 each.
PAGE 3
OpenAir Spring Return 20 lb-in, Rotary GQD Series Electronic Damper Actuators Specifications Operating voltage Power Supply Frequency Power consumption 24 Vac/24 Vdc Technical Instructions Document Number 155-760 June 23, 2008 24 Vac ±20%; 24 Vdc ±15% 120 Vac ± 15% 50/60 Hz running GQD121.1P GQD131.1P GQD151.1P 6.5 VA (4.5W) 4 VA (2.5W) 4.5 VA (3W) GQD121.1P GQD131.1P GQD151.1P 4 VA (2.5W) 3 VA (1.5W) 3.5 VA (2W) holding 120 Vac running holding GQD221.
PAGE 4
Technical Instructions Document Number 155-760 June 23, 2008 OpenAir Spring Return 20 ib-in, Rotary GQD Series, Electronic Damper Actuators Agency Certification UL listed per UL873 cUL to CSA C22.2 No. 24-93 C-Tick conformity per AS/NZS3548 EMC and Low Voltage Directives 24 Vac 120 Vac Conformity Miscellaneous Pre-cabled connection 18 AWG (0.75 mm2) Cable length 3 feet (0.9 m) length Life cycle Designed for minimum of 60,000 full stroke cycles and a minimum of 1.
PAGE 5
OpenAir Spring Return 20 lb-in, Rotary GQD Series Electronic Damper Actuators Operation Technical Instructions Document Number 155-760 June 23, 2008 GQD151 Apply a continuous 2 to 10 Vdc control signal between wire 8 (Y) and wire 2 (G0) to operate the damper actuator. The angle of rotation is proportional to the control signal. A 2 to 10 Vdc position feedback output signal is available between wire 9 (U) and wire 2 (G0) to monitor the position of the damper motor.
PAGE 6
Technical Instructions Document Number 155-760 June 23, 2008 OpenAir Spring Return 20 ib-in, Rotary GQD Series, Electronic Damper Actuators Table 2. Sizing. Total Torque Actuator ≤20 lb-in (2Nm) GQD >20 lb-in ≤62 lb-in (>2Nm ≤7 Nm) GMA >62 lb-in ≤142 lb-in (7 Nm ≤ 16 Nm) >142 lb-in ≤ 248 lb-in (>16 Nm ≤ 28 Nm) GCA Tandem GCA ASK73.2U*: Tandem mounting bracket with any combination of GCA16x. ASK73.1U*: Tandem mounting bracket for all other GCAx actuators.
PAGE 7
OpenAir Spring Return 20 lb-in, Rotary GQD Series Electronic Damper Actuators Technical Instructions Document Number 155-760 June 23, 2008 All wiring must conform to NEC and local codes and regulations. Wiring 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.
PAGE 8
Technical Instructions Document Number 155-760 June 23, 2008 OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electric Damper Actuators Wiring Diagrams SUPPLY 1 GQD121.1P M 24 Vac/dc 2-Position Control EA0832R1 Class III 2 NEUTRAL Figure 7. CCW 7 CW 6 GQD131.1P M 24 Vac/dc Floating Control EA0928R2 Class III 1 SUPPLY 2 NEUTRAL Figure 8. CONTROL 8 GQD151.1P 24 Vac/dc Modulating Control POSITION OUTPUT 9 M EA0925R1 Class III 1 SUPPLY 2 NEUTRAL Figure 9. SUPPLY 3 GQD221.
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OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electronic Damper Actuators Wiring Diagrams, continued Technical Instructions Document Number 155-760 June 23, 2008 Supply (+) Supply Controller Special Applications 24 Vac/dc Control Signal GQD151 External Resistor Kit 985-124 4 to 20 mA 1 Supply Neutral 8 Input 2 to 10V Actuator Neutral EA1090R1 2 Neutral (-) Figure 11. GQD151 4 to 20 mA Applications. Siemens Building Technologies, Inc.
PAGE 10
Technical Instructions Document Number 155-760 June 23, 2008 Start-Up/ Commissioning OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electric Damper Actuators 1. Check Operation: a. Connect wires 1 (red) and 2 (black) to the 24 Vac/dc power supply. NOTE: With no input signal present, the GQD151 actuator with input signal inversion switch set to Inverse Acting, will start driving towards 90°. GQD151 Spring Return Modulating Control 24 Vac/dc b.
PAGE 11
OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electronic Damper Actuators Start-Up/ Commissioning, Continued GQD131 Spring Return Floating 24 Vac/dc GQD221.1U Two-Position 120 Vac Technical Instructions Document Number 155-760 June 23, 2008 1. Check Operation: a. Connect wires 1 (red) and 2 (black) to a 24 Vac/dc power supply. b. Apply a control signal (24 Vac/dc) to wire 6 (violet). Allow the actuator shaft coupling to rotate from 0 to 90°. c. Stop the control signal to wire 6 (violet). d.
PAGE 12
Technical Instructions Document Number 155-760 June 23, 2008 OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electric Damper Actuators Dimensions 11/16 (18) 1-3/32 (28) 2-15/32 (63) 11/16 (18) 1/4 (6) 1/4 (6.7) 2-23/32 (69) 15/16 (~ 23.5) 1/8 (~ 3) 3-3/4 (~ 95) 27/32 (22) 4-23/32 (120) 2-15/32 (63) 5/16 (8) EA1227R1 6-5/8 (168) 25/32 (20) o 3/16 (5) 7-3/32 (180) Figure 12. GQD Actuator and Mounting Bracket Dimensions in Inches (Millimeters).