HVAC Control & Balancing Dampers

Transcription

1 HVAC Control & Balancing Dampers Models VCD, MBD and RBD Selection Construction Performance H* W* August

2 HVAC Control and Balancing Dampers Commercial Control Dampers are used in buildings to regulate the flow of air in a HVAC system. They can be used in intake, exhaust, or mixed air applications. There are two categories of control dampers: Balancing Commercial Control Balancing Manual balancing dampers are control dampers that regulate the flow of air but are not intended to be used in applications as a positive shut off or for automatic control. These dampers are shipped with manual hand quadrants that can be locked in place. There are four balancing damper models available: MBD-10/10M is a single blade MBD-15 is a multi-blade MBDR-50 is a round blade Remote balancing dampers offer the same function as a manual balancing damper plus the added benefit of controlling the damper remotely at a diffuser or wall plate. These remote balancing dampers are ideal for applications where it is difficult to gain access to manually adjust the dampers to balance airflow. The EZ Balance remote control operates the damper motor by connecting to the wall, ceiling, or diffuser mounted RJ11 connector. There are two remote balancing damper models available: RBD-10 (single blade) RBDR-50 (round blade) MBD-10 Single blade * shown with optional standoff bracket MBD-15 Multi-blade Meets SMACNA recommended construction requirements MBDR-50 Round blade RBD-10 Single blade * Actuator shipped as a kit for field installation RBDR-50 Round blade Factory-mounted actuator 2

3 Manual and Remote Balancing Dampers A wide variety of accessories are available for the RBD and RBDR series. They include: Diffuser connector Wall plates with ports Round wall/ceiling plate with single port Single gang outlet box EZ Balance handheld remote kit Plenum and non-plenum rated cables Cable connectors Quick Selection Chart MBD-10 MBD-10M MBD-15 MBDR-50 RBD-10 RBDR-50 Single Blade X X X Blade Profile 3V X Round X X Material Galvanized X X X X X X 20 (1) X X Frame Gauge 18 (1.3) X X X 16 (1.5) X Bearings Synthetic X X X X Bronze O Axles Steel X X X Linkage Material Steel X Manual Quadrant X X X X 1-1/2 in. Standoff Bracket O O X O Actuator 2 in. Standoff Bracket O O O O Remote Powered 9 Volt Actuator X X Sizing Inches (mm) X = Standard Minimum Maximum Single Section Maximum Multi-Section O = Optional 6 x 4 (152 x 102) 36 x 12 (914 x 305) 8 x 4 (203 x 102) 36 x 12 (914 x 305) x 6 (152 x 152) 48 x 60 (1219 x 1524) 96 x 96 (2438 x 2438) 4 (102) 24 (610) 6 x 4 (152 x 102) 36 x 12 (914 x 305) EZ Balance handheld remote kit 4 (102) 24 (610) Pressure RBD-10 RBDR-50 MBD-10/10M MBD-15 MBDR Feet per Minute (maximum) RBD-10 RBDR-50 MBD-10/10M MBD-15 MBDR Inches wg (maximum) 3

4 Volume Control Dampers VCD Series Commercial Control Commercial control dampers regulate the flow of air in the same manner as manual balancing dampers, in addition, they can be used as a positive shutoff or for automatic control. There are three types of commercial control dampers available: Volume control VCD series Insulated control ICD series Air measuring control - AMD series Blade Manual Quadrant Kit Bearing Shaft Extension Jamb Seal Axle Blade Seal Frame Linkage Variable Symmetric Blade Design (VSB) Part of Greenheck s unique approach to damper construction, Variable Symmetric Blade design (VSB), uses two principles to increase damper performance. First, all damper blades are symmetric about their axis. Second, any combination of 4, 5, 6, and 7 in. (102, 127, 152, and 178mm) blade widths are used in a single damper. These two features are part of Greenheck s standard construction and provide the following advantages: Free Area Free Area Increases Mounting Flexibility - Symmetrical blades have identical operating characteristics regardless of airflow direction. This allows a Greenheck control damper to be mounted in either direction of flow, an advantage when installing with space constraints. Increases Free Area - Traditional damper designs with a single blade width require oversized blade stops, limiting free area when the blades are open (Figure 1). Greenheck is able to reduce height or eliminate blade stops, which maximizes free area and increases damper performance (Figure 2). Reduces Actuator Torque - If an unsymmetrical blade closes against airflow, a large amount of torque is needed because the air distribution is unbalanced. Greenheck s VSB design balances airflow on each side of a symmetrical blade, reducing the torque required to operate the damper. The use of symmetrical blades has allowed Greenheck to reduce the sizes and quantities of actuators used on dampers (Figure 3). Competitor Airflow works against actuator Actuator Torque Unbalanced Blade Requires Higher Torque Greenheck with low profile frame Figure 1 Figure 2 Figure 3 Airflow works against actuator Airflow works with actuator Actuator Torque Balanced Blade Requires Less Torque 4

5 Design and Construction Features Blades 3V blades are fabricated from a single thickness of 16 ga. (1.5mm) galvanized or stainless steel incorporating three longitudinal V-Type grooves running the full length of the blade to increase strength. This blade is standard on models VCD-15, 18, 20, 20V, 23, 23V, and SEVCD-23, designed for low to medium velocity and pressure applications. Airfoil blades are constructed of double-skin galvanized steel, stainless steel, or heavy-gauge extruded aluminum. This blade design results in lower resistance to airflow and increased strength that is typically used in high pressure systems. Airfoil blades are standard on models VCD-33, 33V, 34, 40, 42, 42V, 43, 43V and SEVCD-33. 3V Blade Steel Airfoil Blade Aluminum Airfoil Blade Parallel Versus Opposed Blade Operation Greenheck control dampers are offered with either parallel or opposed blades. Each style has distinguishing characteristics in regard to the type of operation required. Parallel blade operation - This configuration requires the damper blades to rotate in the same direction, parallel to one another. Parallel blade orientation is typically used when the damper operates in two positions, open or closed. Opposed blade operation - Adjacent damper blades rotate opposite one another under opposed blade configuration. Opposed blade configuration is typically used on dampers that modulate airflow. Parallel Blades Opposed Blades Frame Greenheck control dampers utilize a 5 in. x 1 in. (127mm x 25mm) hat channel frame made of 16 ga. (1.5mm) steel, 16 ga. (1.5mm) stainless steel, or in. (3mm) aluminum. Each frame is built with four separate pieces of material and joined by our Tog-L-Loc process resulting in the following advantages: Rigid frame - When two pieces of 16 ga. (1.5mm) steel are joined by the Tog-L-Loc system, the joint has an equivalent thickness of 10 ga. (3.5mm) steel. Increased corrosion resistance - High temperatures from welding remove the galvanized finish from damper frames. The Tog-L-Loc process does not use heat, so Greenheck damper frames have greater corrosion resistance by retaining the galvanized coating. Tog-L-Loc Reinforced Corner Optimal free area - On dampers that are 17 in. (432mm) high or less, Greenheck uses a low profile top and bottom frame section to maximize free area. Square frame - Many damper manufacturers construct each frame from a single piece of sheet metal, formed into shape by bending at three corners and spot welding in one. This type of construction can produce weak corners that are not necessarily 90º, resulting in a frame that is out-of-square. Symptoms of out-of-square frames include blades that do not close properly and reduced leakage performance. Using four separate frame components (top, bottom, and two sides), Greenheck s Tog-L-Loc process results in four sturdy, 90º joints. This ensures that each Greenheck damper is square and provides optimum performance in the field. There are five frame options available: Channel Frame (standard) Single Flange Single Reverse Flange Double Flange Quick Connect (VCD-43, -43V; ICD Series) Standard Frame Single Flange (actuator side) Single Reverse Flange (opposite actuator) Double Flange Quick Connect 5

6 Design and Construction Features Frame Options The channel frame style allows a damper to be insert mounted into an opening without being concerned about the linkage sticking out past the frame. The single and single reverse flange frame can be insert mounted or directly mounted to the wall, mating surface or bulkhead. The quick connect frame design is extruded to match up to a TDC, TDF, or Ductmate connection to allow the damper to be cleated to the ductwork. This illustration depicts how to mount a damper into a plenum wall. Linkage Traditional damper linkages are found in the airstream, adding to the pressure drop of the damper blades and frame. Greenheck control dampers have blade linkage concealed in the frame to prevent additional pressure drop and unwanted noise. With standard plated steel construction (stainless steel optional), the linkage is engineered to accurately control each and every blade without need for adjustment. No Top or Bottom Greenheck s standard control dampers are designed for installation in any position with the blades horizontal. The damper can be turned over so the actuator is on the left or right side. Optional vertical blade models can be turned with the actuator at the top or bottom. Standard Vertical Blade Multi-Section Dampers Each of Greenheck s VCD control dampers have a maximum size for a single damper section or panel. These sections vary from 48 in. wide x 60 in. high (1219mm x 1524mm) to 60 in. wide x 74 in. high (1524mm x 1880mm). Dampers larger than a single section will be made up of equal size sections which, depending upon model and size, may be shipped as a single complete assembly or as separate sections for field assembly. Multi-section damper assemblies are supplied with a coupler or factory installed jackshaft so all sections operate together. Factory Installed Jackshaft Coupled (concealed between frames) Damper assemblies (larger than one section) are not designed to be structurally self-supporting. Additional horizontal bracing is recommended for support. Vertical bracing should be installed if required to hold against system pressure. 6

7 Options and Accessories QR Codes Greenheck has added QR (Quick Response) codes to the labels on commercial control and air measuring dampers. When you scan the QR code with your smartphone, it will link to based on the model. Paint Finishes A wide variety of paint finishes are available including: Anodize Industrial Epoxy Baked Enamel Kynar /Hylar Epoxy Permatector Hi Pro Polyester See color charts on for standard color offering. Factory Sleeve Option Greenheck control dampers are available with factory furnished sleeves in lengths up to 48 in. (1219mm). Sleeves are constructed out of 10 through 20 ga. (3.25 through 0.91 mm) galvanized steel. When dampers are installed in factory sleeves, the A dimension specifies the location of damper within the sleeve. Sleeve A Damper Location CL Damper Frame L Damper D* D* + 2 in. sq. Transitions Greenheck control dampers can be supplied with the appropriate transition option in applications where dampers require installation in round or oval openings. Rectangular dampers are constructed zero, 1 inch (25mm), or 2 (51mm) larger than the transition dimensions and installed in a factory sleeve. The sleeve is transitioned at each end to the appropriate round, oval, or rectangular size. Type O Type R Type C Transition options available Security Bars When security becomes an issue, Greenheck offers optional factory-installed security bars. Security bars are factory welded into a 10 ga. (3.5mm) sleeve. Open Close Indicator - OCI The OCI contains two single pole, single throw switches used to indicate damper blade position. The switches provide positive open and closed signals when used in conjunction with remote indicator lights. Switches are physically linked to a damper blade and therefore give a true representation of the damper s position. 7

8 Wide Range of Actuators Greenheck has a wide range of manual, electric, and pneumatic actuators for use with control dampers. Actuators can be installed at the factory or shipped loose with the necessary linkage and brackets required for mounting. Each damper and actuator is cycle tested in our factory before the final product is shipped, ensuring Greenheck quality and trouble free operation in the field. Manual Hand Quadrant See Figure 5 Location Internal or External Figure 5 Manual Quadrant Electric Actuator Checklist See Figures 6 & 7 Power Supply 24 VDC, 24 VAC, 120 VAC, and 240 VAC Frequency Operation Spring Return (spring will drive damper to original starting point) Power Open or Power Closed Operating Mode Two position (damper position is open or closed) Modulating (damper position determined by modulating control signal) Floating (damper can be stopped anywhere between open and closed) Fail Direction (for spring return only) Open or Closed Location Internal or External Control Signal (for modulating only) 0-10 VDC, 2-10 VDC or 4-20 madc NEMA Enclosure 1, 3, 4, 4X, or 7 (specify one per application) Accessories Auxiliary Switches Transformers Greenheck s most commonly used electric actuator manufacturers are Honeywell, Belimo, and Siemens. Contact your Greenheck representative for other options. Figure 6 Electric External Mount Figure 7 Electric Internal Mount Pneumatic Actuator Checklist See Figure 8 Power Supply 20 psi Operation Spring Return (spring will drive damper to original starting point) Operating Mode Two Position (damper position is open or closed) Modulating (damper position determined by modulating pressure signal) Fail Direction (for spring return only) Open or Closed Location Internal or External Control Signal (for modulating only) 3-15 psi Accessories Solenoid Valves or Positioners Greenheck s most commonly used pneumatic actuator manufacturers are Siemens and Invensys. Contact your Greenheck representative for other options. Figure 8 Pneumatic 8

9 Damper Performance Testing Criteria Pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All data has been corrected to represent standard air at a density of.075 lb/ft 3 (1.2 kg/m 3 ). Actual pressure drop found in an HVAC system is a combination of many factors. This pressure drop information, along with an analysis of other system influences should be used to estimate actual pressure losses for a damper installed in an HVAC system. Figure 5.3 Illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three test configurations because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper. Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has a lower pressure drop than Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the damper. Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop because of high entrance and exit losses due to the sudden changes of area in the system. 5D 6D Figure 5.3 5D Figure 5.2 Figure 5.5 D= 4 (W) (H) 3.14 D = Duct length W = Damper width H = Damper height Greenheck Fan Corporation certifies that the model AMD-23 and 33, VCD-15, 20 and VCD-40 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to Air Performance ratings only. Greenheck Fan Corporation certifies that the model VCD-18, 23, 33, 34, 43, SEVCD-23 and 33 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to Air Leakage and Air Performance ratings. Greenheck Fan Corporation certifies that the model ICD-44 and ICD-45 shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to Air Leakage, Air Performance and Energy Efficiency ratings. 9

10 Pressure Drop Data VCD-15, 18, 20, 23 Galvanized 3V blade Economic VCD-15 and VCD-18 Blade and jamb seals VCD-18 and 23 SEVCD stainless steel 3V blade 316 stainless steel construction Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-20V and 23V Vertical 3V blade Blade and jamb seals VCD-23V 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-33 and 34 Galvanized airfoil blade Insulated airfoil VCD-34 Blade and jamb seals SEVCD stainless steel airfoil blade 316 stainless steel construction Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure

11 Pressure Drop Data VCD-33V Vertical galvanized airfoil blade Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-40 Extruded aluminum airfoil blade Blades contained within the frame Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-42 Extruded aluminum airfoil blade Galvanized frame Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure

12 Pressure Drop Data VCD-42V Vertical extruded aluminum airfoil blade Galvanized frame Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-43 Extruded aluminum airfoil blade Aluminum frame Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure VCD-43V Vertical extruded aluminum airfoil blade Aluminum frame Blade and jamb seals 12x12 24x24 36x36 12x48 48x12 AMCA figure

13 Pressure Drop Data VCDR-50 and 53 Insert type round single blade Blade seals VCDR AMCA figure VCDRM-50 and 53 Insert type round multi-blade Blade seals VCDRM AMCA figure Pressure Drop Comparison Greenheck compared the AMCA licensed pressure drop data of a VCD in. wide x 12 in. high (305mm x 305mm) versus a competitor s equivalent 12 in. wide x 12 in. high (305mm x 305mm) damper. Both dampers were installed in an identical system which drew 2000 ft./min of airflow through them. The results were dramatic! AMCA Licensed Pressure Drop Data 10.0 Pressure Drop (in. wg) in. wg 0.08 in. wg Competitor Greenheck VCD ,000 2,000 10,000 (ft./min) AMCA Figure in. x 12 in. Fabricated Airfoil Damper 13

14 Air Leakage Performance Three common code energy standards that pertain to dampers are: ASHRAE Standard Energy Standard for Buildings except Low-Rise Residential Buildings California Title 24 IECC - International Energy Conservation Code Here are the primary requirements for dampers based on each standard: ASHRAE Standard 90.1 (2010 edition) states that maximum damper leakage at 1 in. wg for a : non-motorized damper is 20 cfm/ft 2 or motorized damper is 4 cfm/ft 2. ( See Table from ASHRAE Standard 90.1) California Title 24 (2013 edition, section ) states that the dampers shall be certified in accordance with AMCA Publication 511 to have a maximum leakage of 10 cfm/ft 2 at 1 in. wg. The dampers have been tested and are able to open and close against the rated airflow and pressure of the system after 60,000 damper opening and closing cycles. IECC (2012, section C ) that outdoor air supply and exhaust opening be supplied with Class 1A motorized dampers with a maximum leakage rate of 4 cfm/ft 2 at 1 in. wg when tested in accordance with AMCA 500D. Greenheck s volume control dampers meets the requirements of ASHRAE, California Title 24 and IECC. Air Leakage Data Air leakage is based on operation between 32 and 120 F (0 and 49 C). Tested for leakage in accordance with ANSI/AMCA Standard 500-D, Figure 5.5. Tested for air performance in accordance with ANSI/AMCA Standard 500-D, Figures 5.2, 5.3 and 5.5. Torque Data is based on a torque of 5.0 in-lb/ft² (0.56 N m) applied to close and seat the damper during the test. VCD-18 Leakage Class* Maximum Damper Width 1 in. wg (0.25 kpa) 2 in. wg (0.5 kpa) 48 in. (1219mm) 1A 1 VCD-23, SEVCD-23 Leakage Class* Maximum Damper Width 1 in. wg (0.25 kpa) 4 in. wg (1 kpa) 5 in. wg (1.2 kpa) 48 in. (1219mm) 1A 1 1 VCD-43 Maximum Damper Width 1 in. wg (0.25 kpa) 4 in. wg (1 kpa) Leakage Class* 8 in. wg (2 kpa) 10 in. wg (2.5 kpa) 60 in. (1524mm) 1A Torque Data is based on a torque of 7.0 in-lb/ft² (0.79 N m) applied to close and seat the damper during the test. VCD-33, 34 SEVCD-33 Maximum Damper Width 1 in. wg (0.25 kpa) 4 in. wg (1 kpa) Leakage Class* 8 in. wg (2 kpa) 10 in. wg (2.5 kpa) 60 in. (1524mm) 1A

15 Specialty Control Dampers *Leakage Class Definitions The maximum allowable leakage is defined by AMCA as the following: Leakage Class 1A - 3 cfm/ft 1 in. wg (Class 1A is only defined at 1 in. wg). Leakage Class 1-4 cfm/ft 1 in. wg - 8 cfm/ft 4 in. wg - 11 cfm/ft 8 in. wg cfm/ft 10 in. wg Model Maximum Leakage cfm/sq. ft. (cmh/sq.m) 1 in. wg (.25 4 in.wg (1 kpa) VCD-23V, 43V Class 1A Class 1 VCD-40 Class 1A Class 1 VCD-33, 42, 42V Class 1A Class 1 VCDR-53 Class 1 Class 1 VCDRM-53 Class 1 Class 1 Greenheck Fan Corporation certifies that the model VCD-18, 23, 33, 34, 43, SEVCD-23 and 33 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to Air Leakage and Air Performance ratings. Greenheck Fan Corporation certifies that the model ICD-44 and ICD-45 shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to Air Leakage, Air Performance and Energy Efficiency ratings. Specialty Control Dampers Damper/Louver in a Common Sleeve Greenheck can provide a damper and louver in a common sleeve for applications requiring single unit assembly. This assembly makes it convenient for installing in the field as one unit instead of dealing with multiple units (consult factory for more information). HEIGHT DAMPER SLEEV LOUVER Face & Bypass Dampers The face and bypass dampers are used in applications where two dampers are connected together allowing one damper to open while the other damper closes. The FBH-43 is horizontal style (side-by-side). The FBV-43 is vertical style (stacked) DAMPER LOCATION SLEEVE LENGTH LEFT SIDE OF SLEEVE ELEVATION FBH FBV 15

16 Specialty Control Dampers ICD - Insulated Control Damper Greenheck s ICD dampers were developed for applications where it is necessary to minimize the thermal transfer and reduce condensation. ICD series dampers meet Class 1A leakage of less than 3 cfm/sq. 1 in. wg (55 cmh/m kpa). ICD series dampers can be used in applications down to -70 F (-56 C) and up to 200 F (93 C) for: Cold food storage warehouses Buildings/warehouse Rooftop intake or exhaust AMCA Certified Energy Efficiency Performance A damper s Thermal Efficiency Ratio (E) is a comparison of the thermal performance of the tested damper with a standard reference damper. A damper that is twice as efficient as the reference damper would have an E of 100%. Cross section of thermally broken frame and blade ICD-44 ICD-45 Maximum - ft/min (m/s) 4000 (20.3) 4000 (20.3) Maximum Pressure - in. wg (kpa) 8 (2) 8 (2) Thermal Efficiency Ratio (E) 593% 941% Temperature Range - F (C ) -70 to 200 (-56 to 93) -70 to 200 (-56 to 93) Frame Insulated Thermally Broken Aluminum - X Aluminum X - Channel X O Frame Type Quick Connect O X Reverse Flange O O Single Flange O O Blade Action Parallel O O Opposed X X Blade Type Insulated Thermally Broken X X Blade Material Extruded Aluminum Airfoil X X Blade Seal Silicone X X Jamb Seal Stainless Steel X - Silicone O X X = Standard O = Optiona Air Measuring Products Airflow measuring products are used to accurately measure and control air. Applications include meeting the minimum outdoor air requirements of ASHRAE Standard 62 or California Title 24 by providing accurate monitoring and control of outside air. Why is outside air measurement important? There are many significant benefits to monitoring outside air volumes. First, by measuring the amount of outside air coming into a building, you can be assured the building is in compliance with all applicable indoor air quality codes including ASHRAE Standard 62 and California Title 24. Meeting these minimum requirements reduces indoor airborne viruses and bacteria which can lead to Sick Building Syndrome. Studies have shown that inhabitants in buildings that are under ventilated suffer from reduced productivity levels. AMS 16

17 Specialty Control Dampers The second major advantage to monitoring outside air volumes is it eliminates costly over ventilation. In addition to increased energy costs associated with heating and cooling of outside air, over ventilation causes an increase in humidity that can result in mold development. The AMS is an accurate airflow measuring station that is furnished with a properly sized pressure transducer that outputs a 0-10 VDC signal proportional to cfm. The AMS is compatible with a field-supplied controller or a factory-supplied LON controller (sold separately). AMD series dampers were developed as an accurate low cost alternative to typical air measuring products. The AMD series comes standard with a modulating actuator and a properly sized pressure transducer that outputs a 0-10 VDC signal proportional to cfm. Many control contractors like to use their own controllers. A large label on every AMD damper shows the controls contractor everything needed to program their own controller. Field-supplied controllers can use the transducer s signal along with the flow formula (provided) to regulate a modulating actuator to the target set point. A factory-supplied controller is also available. The AMD series is also available with a factorysupplied LON controller that accepts a target flow set point as an input (either analog or digital) and outputs a 0-10 VDC signal proportional to the airflow that can be used to position a damper. Quick Selection Chart ft/min (m/s) Temperature Range F ( C) Factory Calibration Required AMD-42 featuring an extruded airfoil blade control blade AMS AMD-23 AMD-33 AMD-42 AMD-42V 2000 (10.2) -20 to 180 (-29 to 82 ) 2000 (10.2) -20 to 180 (-29 to 82 ) 2000 (10.2) -20 to 180 (-29 to 82 ) 2000 (10.2) -20 to 180 (-29 to 82 ) AMD-42V featuring an extruded airfoil vertical blade control damper 2000 (10.2) -20 to 180 (-29 to 82 ) Accuracy 5% 5% 5% 5% 5% Measures Airflow Regulates Airflow Volume Factory-Supplied Transducer Factory-Supplied Controller Airflow Straightener Blade Action Parallel Unit Depth in. (mm) 8 (203) 12 (305) 12 (305) 12 (305) 12 (305) Maximum Size 60 x 48 (1524 x 1219) 144 x 148 (3658 x 3759) AMD-23 featuring a 3V blade control damper 144 x 148 (3658 x 3759) 144 x 148 (3658 x 3759) 74 x 60 (1880 x 1524) Quick Build Program AMD-33 featuring a fabricated airfoil blade control damper 17

18 Volume Control Dampers Quick Selection Chart Blade Profile Frame Material Blade Material Frame Gauge Blade Seals Jamb Seals Bearings Axles Linkage Material Accessories Sizing (mm) Ratings 18 X = Standard O = Optional Single Blade VCD-15 VCD-18 VCD-20 VCD-20V VCD-23 VCD-23V VCD-33 VCD-33V VCD-34 VCD-40 3V X X X X 3V-Vertical Blade X X Airfoil-Vertical Blade Airfoil-Insulated Airfoil X X Galvanized X X X X X X X X X 304 Stainless Steel O O O O O O O 316 Stainless Steel Aluminum Galvanized X X X X X X X X X 304 Stainless Steel O O O O O O O 316 Stainless Steel Aluminum X X X X X X X X X 12 O O O O O O O Aluminum.125 (3.2) TPE X X X X X X X Silicone O O O O O O 304 Stainless Steel X X X X X X X 316 Stainless Steel Synthetic X X X X X X X X X X Bronze O O O O O O O O O O 304 Stainless Steel O O O O O O O O O O 316 Stainless Steel Steel X X X X X X X X X X 304 Stainless Steel O O O O O O O O 316 Stainless Steel Steel X X X X X X X X X X 304 Stainless Steel O O O O O O O O 316 Stainless Steel Sleeves O O O O O O O O O Transitions O O O O O O O O O Actuators* O O O O O O O O O O Flanges** O O O O O O O O Retaining Angles O O O O O O O O O O Security Bars O O O O O O Minimum Size Maximum Single Section Size Maximum Multi- Section Size Max. ft/min (m/s) Max. Pressure in. wg (kpa) 48x60 (1219x1524) 72x60 (1829x1524) 1500 (7.6) 2 (.5) 48x60 (1219x1524) 72x60 (1829x1524) 1500 (7.6) 2 (.5) 48x74 (1219x1880) Unlimited 3000 (15.2) 5 (1.2) * Actuators include manual, 24V, 120V, 240V, and pneumatic. ** Flanges include single, single reverse, and double flange. *** The inside of the blade is not painted on airfoil blade dampers. 74x48 (1880x1219) 148x96 (3759x2438) 3000 (15.2) 5 (1.2) 48x74 (1219x1880) Unlimited 3000 (15.2) 5 (1.2) 74x48 (1880x1219) 148x96 (3759x2438) 3000 (15.2) 5 (1.2) 60x74 (1524x1880) Unlimited 4000 (20.3) 10 (2.5) X 74x60 (1880x1524) 148x96 (3759x2438) 4000 (20.3) 10 (2.5) X 60x74 (1524x1880) Unlimited 4000 (20.3) 10 (2.5) X X 60x74 (1524x1880) Unlimited 6000 (30.5) 6 (1.5)

19 Volume Control Dampers Quick Selection Chart Blade Profile Frame Material Blade Material Frame Gauge Blade Seals Jamb Seals Bearings Axles Linkage Material Accessories Sizing (mm) Ratings X = Standard O = Optional VCD-42 VCD-42V VCD-43 VCD-43V SEVCD-23 SEVCD-33 VCDR-50 VCDR-53 VCDRM-50 VCDRM-53 Single Blade X X 3V X X X 3V-Vertical Blade Airfoil X X X Airfoil-Vertical Blade X X Airfoil-Insulated Galvanized X X X X X X 304 Stainless Steel O O O O 316 Stainless Steel X X Aluminum X X Galvanized X X X X 304 Stainless Steel O O O O 316 Stainless Steel X X Aluminum X X X X 20 X X 16 X X X X O O 14 O O X X 12 O O 10 O O Aluminum.125 (3.2).125 (3.2) EPDM X Vinyl TPE X X X X X X Silicone O O O O O O O 304 Stainless Steel X X X X X 316 Stainless Steel X X Synthetic X X X X Bronze O O O O X X X X 304 Stainless Steel O O O O O O O O 316 Stainless Steel X X Steel X X X X X X X X 304 Stainless Steel O O O O O O O O 316 Stainless Steel X X Steel X X X X X X 304 Stainless Steel O O O O O O 316 Stainless Steel X X Sleeves O O O O O O Transitions O O O O Actuators* O O O O O O O O O O Flanges** O O O O O O Retaining Angles O O O O Security Bars O Minimum Size Maximum Single Section Size Maximum Multi- Section Size Max. ft/min (m/s) Max. Pressure in. wg (kpa) 60x74 (1524x1880) Unlimited 6000 (30.5) 6 (1.5) 74x60 (1880x1524) 148x96 (3759x2438) 6000 (30.5) 6 (1.5) 60x74 (1524x1880) 288 x 222 (7315 x 5639) 6000 (30.5) 10 (2.5) * Actuators include manual, 24V, 120V, 240V, and pneumatic. ** Flanges include single, single reverse, and double flange. *** The inside of the blade is not painted on airfoil blade dampers. 74x60 (1880x1524) 148x96 (3759x2438) 6000 (30.5) 6 (1.5) 48x74 (1219x1880) 60x74 (1524x1880) 4 (102) 24 (610) 4 (102) 24 (610) 10 (254) 36 (914) 10 (254) 36 (914) Unlimited Unlimited NA NA NA NA 3000 (15.2) 5 (1.2) 4000 (20.3) 10 (2.5) 3000 (15.2) 4 (1) 3000 (15.2) 4 (1) 2500 (12.7) 5 (1.2) 2500 (12.7) 5 (1.2) 19

20 Drive Arrangement Definition Each damper is given a drive arrangement code to help describe the construction of the damper. The following breaks down what each number and letter represents. 22-2FEL Number of sections wide 2 Number of sections high 3 Number of actuators or manual quadrants 4 Who supplies the actuators or manual quadrants F - Factory C - Customer Supplied (field mounted) 5 Actuator or manual quadrant mounting E - External I - Internal B - Both internal and external 6 Actuator or manual quadrant location L - Left-hand drive R - Right-hand drive B - Both right and left 7 Number of jackshafts Jackshaft Actuator or Manual Quadrant Damper Width Damper Height Enjoy Greenheck s extraordinary service, before, during and after the sale. Greenheck offers added value to our wide selection of top performing, energy-efficient products by providing several unique Greenheck service programs. Our Quick Delivery Program ensures shipment of our in-stock products within 24 hours of placing your order. Our Quick Build made-to-order products can be produced in or 15-day production cycles, depending upon their complexity. Greenheck s free Computer Aided Product Selection program (CAPS), rated by many as the best in the industry, helps you conveniently and efficiently select the right products for the challenge at hand. Greenheck has been Green for a long time! Our energy-saving products and ongoing corporate commitment to sustainability can help you qualify for LEED credits. Our 3D service allows you to download at no charge lightweight, easy-to-use AutoDesk Revit 3D drawings for many of our ventilation products. Find out more about these special Greenheck services at greenheck.com Our Commitment As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under Warranties. Prepared to Support Green Building Efforts P.O. Box 410 Schofield, WI Phone (715) greenheck.com 00.DMP.1004 R xx Copyright 2013 Greenheck Fan Corp.