HCD-120 Industrial Control Damper
Application and Design Model HCD-120 is a heavy duty industrial control damper with a flanged frame. It is designed to control airflow and provide shut off in HVAC or industrial process control systems. A variety of optional features makes model HCD-120 extremely versatile, allowing its capabilities to be tailored to the application. This model is available with parallel or opposed blade action.
Ratings
(see page 2 and 3 for specific limitations)
D H*
Pressure: Up to 8.5 in. wg (2.1 kPa) - differential pressure Velocity: Up to 3000 fpm (15.2 m/s) Temperature: -40 to 400°F (-40 to 204°C) For higher temperatures, consult Greenheck.
Standard Construction Standard
Optional
Frame Depth (C)
8 in. (203mm)
10 in. (254mm)
Frame Material
Galvanized Steel
304SS, 316SS, Painted
Frame Type
Flanged Channel
Frame Thickness
14 ga. (2mm)
10 ga. (3.5mm) 12 ga. (2.7mm)
Flange Width (D)
2 in. (51mm)
1 1/2 in. (38mm) 2 1/2 in. (64mm)
Blade Action Blade Material Blade Seals Blade Thickness
Parallel
Opposed
Galvanized Steel
304SS, 316SS, Painted
None
EPDM, Silicone
16 ga. (1.5mm)
-
Blade Type Linkage Jamb Seals
3V Plated Steel
304SS, 316SS
None
301SS, 316SS
Axle Diameter
3/8 in. (9.5mm)
-
Axle Bearing
Stainless Steel Sleeve
-
Axle Material
Plated Steel
316SS
Axle Seals
None
-
Paint Finishes
None
Epoxy, Hi Pro Polyester, Hi Temperature Silver, Industrial Epoxy
Mounting Holes
W*
None
C * Actual Inside Dimension. The W dimension is ALWAYS parallel with the damper blade length.
Features: • Wide range of actuators available • Blades run vertically
Options: • Round Transitions • Position Indicator - OCI (Open Close Indicator) - External switch
Size Limitations WxH
Minimum Size
Inches mm
Maximum Size Single Section
Multi Section
6 1/2 x 5
48 x 96
96 x 96
165 x 127
1219 x 2438
2438 x 2438
Standard; Standard with corner holes Installation instructions available at www.greenheck.com.
120
Performance Data
Temperature Limitations
Blade seals: Silicone -40° to 400°F (-40° to 204°C) EPDM -20° to 250°F (-29° to 121°C)
Jamb seals:
lexible stainless steel -40° to 400°F F (-40° to 204°C)
For higher temperatures, consult Greenheck.
Velocity Limitations
9 8 7 6 5 4 3 2 1
8.5 in. wg 96 2000 fpm 72
2.5 in. wg
Damper Height ( in.)
The chart at the right shows conservative pressure limitations based on a maximum blade deflection of w/360.
Pressure ( in. wg)
Pressure Limitations
HCD-120
0 6 12 18 24 30 36 42 48 Damper Width ( in.)
Pr essure Limitations
The chart at far right shows velocity limitations based on damper size.
60 48 3000 fpm 24
0
12
36
48
Damper Width ( in.)
Velocity Limitations
Pressure Drop Data This pressure drop data 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/ft3 (1.2 kg/m3). Actual pressure drop found in any 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 a 9 8.5" (w.g.) given HVAC system. 96
135
Pressure ( in. wg)
Pressure ( in. w.g.)
Damper Height ( in.)
8 20 7 16 15 in. wg 6 2000 fpm Figure 5.3 illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three test 5 configurations because the entrance and exit losses are4 minimized by straight duct runs upstream and downstream of 12 72 8.5 in. w the damper. 3 8 3000 fpm 2 an open area. This configuration Figure 5.2 illustrates a ducted damper exhausting air into has a lower pressure drop 4 60 1 3500 fpm
AMCA Test Figures
than Figure 5.5 because the entrance losses are minimized by a straight duct run upstream of the damper. 0 12 24 36 48 60 48 Figure 5.5 illustrates a plenum mounted damper. This configuration has the highest pressure drop because of the high Damper Width ( in.) entrance and exit losses due to the sudden changes of area in the system. 5D
Pr essure Limitations
6D
12
36
48
Damper Width ( in.)
5D
Velocity Limitations
D= Fig. 5.2
Fig. 5.5
0
12 2 Dam
Pr essure 4000 fpm
24
0
Fig. 5.3
0
4 ( W ) (H) 3.14
60
Performance Data
HCD-120
Fig
Fig
Fig
u ur e 5 re 5 .2 .3
ur e5
.5
Pressure Drop 36 x 36 in. Damper (914mm x 914mm)
Leakage Data Damper leakage (with blades fully closed) varies based on the type of low leakage seals applied. Model HCD-120 is available with no jamb seals (standard) or with stainless steel jamb seals and EPDM, or silicone rubber blade seals. Leakage testing was conducted in accordance with AMCA Standard 500-D and is expressed as CFM per sq. ft. of damper face area. All data has been corrected to represent standard air at a density of .075 lb/ft3 (1.2 kg/m3).
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Leakage 36 x 36 in. (914mm x 914mm)Damper (based on 5 in. lb/ft2 of torque)
4
5
6
7 8 9 10
20
30
40
50 60 70 80 90 100
Round Transitions
HCD-120
Transition Type Type 1: T ransition plate with hole in the center at selected diameter. Weld studs/thread studs are welded to the plate in a circular mounting hole pattern. Transition plate is stitch welded to the damper flange. Type 2: T ransition plate with hole in the center at selected diameter. A rolled collar measuring 2 in. (51mm) long is welded to the transition plate opening. Collar is undersized 1/8 inch (3mm) in diameter to slide into existing duct work. Transition plate is bolted to the damper flange. Type 3: T ransition plate with hole in the center at selected diameter. A rolled angle ring at selected diameter is welded to the transition plate. Transition plate is bolted to the damper flange.
HCD
Type 3
Type 2
Type 1
Mounting Holes
HCD-120
Bolt holes are available as an option. Greenheck’s standard pattern is 7/16 in. (11mm) diameter holes (M dimension) spaced 6 in. (152mm) on center (L dimension). Custom bolt hole patterns are available. Contact Greenheck for the limitations.
Standard Mounting Hole Pattern Typical for single or double wide panel
Specifications Industrial grade control dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules. Dampers shall consist of: a 14 ga. (2mm) galvanized steel channel frame with 8 in. (203mm) minimum depth and 2 in. (51mm) flanges; triple V blades fabricated from 16 ga. ( 1.5mm)galvanized steel; 3/8 in. (9.5mm) dia. plated steel axles turning in stainless steel sleeve bearings; and external (out of the airstream) blade-to-blade linkage. Damper manufacturer’s printed application and performance data including pressure, velocity, and temperature limitations shall be submitted for approval
Standard Mounting Hole Pattern with Corner Holes Typical for single or double wide panel
showing damper suitable for pressures to 8.5 in. wg (2.1 kPa), velocities to 3,000 fpm (15.2 m/s) and temperatures to 400°F (204°C). Specifier may add the following: Damper shall be equipped with blade and jamb seals for low leakage performance. Blade seals shall be EPDM 250°F (121°C) maximum temperature or Silicone rubber for 400°F (204°C) maximum temperature. Jamb seals shall be flexible stainless steel. Testing and ratings shall be per AMCA Standard 500-D. Basis of design is Greenheck model HCD-120.
Copyright © 2015 Greenheck Corporation HCD-120 Rev. 16 January 2016
