HCD-220 (3-V Blade) - Greenheck

Application and Design
Ratings (See pages 2 and 3 for specific limitations)
Pressure: Up to 15 in. wg (3.7 kPa) -
differential pressure
Velocity: Up to 4000 fpm (20.3 m/s)
Temperature: -60°F to 600°F (-51°C to 315°C). Consult
factory for other temperatures.
H*
HCD-220
Industrial Control Damper
Model HCD-220 is a heavy duty flanged industrial control damper. It is designed to control airflow and provide shut off in HVAC
or industrial process control systems. HCD-220 has a variety of optional features that allows this damper to be tailored to your
application. This model is available with parallel or opposed blade action.
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 Parallel Opposed
Blade Material Galvanized Steel 304SS, 316SS, Painted
Blade Seals None EPDM, Silicone
Blade Thickness 12 ga. (2.7mm) 10 ga. (3.5mm)
Blade Type
3V
Linkage Plated Steel 304SS, 316SS
Jamb Seals None 301SS, 316SS
Axle Diameter 3/4 in. (19mm) -
Axle Bearing
Stainless Steel
Sleeve
External Bronze Sleeve,
External Relubricable
Ball, Outboard Bronze,
Outboard Relubricable
Ball
Axle Material Plated Steel 303SS, 316SS
Axle Seals None O-ring, Double Gland
Stuffing Box
Paint Finishes None Epoxy,
Hi Pro Polyester,
Hi Temperature
Aluminum,
Hi Temperature Silver,
Industrial Epoxy
Permatector
Size Limitations
W x H
Minimum
Maximum Size
Size Single Section Multi - Section
Inches 6 1/2 x 6 48 x 96 96 x 96
mm 165 x 152 1219 x 2438 2438 x 2438
* Actual Inside Dimension
** The W dimension is ALWAYS parallel
with the damper blade length
Features:
• Linkage is external heavy duty type with galvanized steel
clevis arms and tie bars and plated steel pivot pins.
• Blades are reinforced with 3 longitudinal structurally
designed vee's.
• Blades run vertically**, consult factory.
• Wide mounting flanges can be ordered with bolt holes,
customized to match your requirements.
Options:
• Position Indicator
- Open Closed Indicator (OCI)
- External Switch
W*
Installation instructions available at www.greenheck.com.
C
D

Pr essur e ( in. w g)
230
Performance Data
Pressure Limitations
20
96
16 15 in. w g
on a maximum blade deflection of L/360.
4000 fpm
12
Temperature 8.5 in. w g Limitations 72
8
Blade seals:
4
(-40° to 60 +204°C)
0 0 12 24 36 48 60 72 (-29° to 48 +121°C) 5000 fpm
Damper Width ( in.)
Jamb seals:
Pr essur e Limitations
The chart at the right shows conservative pressure limitations based
Silicone Rubber -40° to +400°F
Damper Height ( in. )
EPDM -20° to +250°F
For higher temperatures consult Greenheck
Flexible stainless steel -40° to +400°F
(-40° to +204°C)
24
Velocity Limitations
The chart at far right shows conservative velocity limitations based
on damper size.
0
12 36 48 60
Damper Width ( in.)
Ve locity Limitations
Pr essur e ( in. w g)
16
12
8.5 in. w g
8
4
15 in. w g
0 12 24 36 48
Damper Width ( in.)
Pr essur e Limitations
220
Damper Height ( in.)
96
72
60
48
36
24
12
0
HCD-220
3000 fpm
3500 fpm
4000 fpm
12 24 36 48
Damper Width ( in.)
Ve locity 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/ft 3 (1.2 kg/m 3 ).
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 given HVAC
system.
AMCA Test Figures
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 the 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 the high
entrance and exit losses due to the sudden changes of area in the system.
5D
6D
Fig. 5.3
5D
D=
4 (W) (H)
3.14
Fig. 5.2
Fig. 5.5

3
performance data
Leakage Data
Static Pressure Difference (in. wg)
Pr essur e Loss ( in. w g )
15
10
9
8
7
6
5
4
3
2
1.0
.9
.8
.7
.6
.5
.4
.3
.2
2.00
Pressure Drop
36 in. x 36 in. (914mm x 914mm) Damper
220
1.00
.80
.60
.40
.20
.10
.08
.06
.04
.02
.02
2 3 4 5 6 7 8 9 10 2 3
x 100 x 1000
With Seals
Velocity (fpm)
120
Without Seals
1 2 3 4 5 6 7 8 910 20 30 4050 60 708090100 150
Air Leakage in CFM/Sq. Ft.
5. 5
5 .2
5 .3
2 4 6 8 10 2 4
x 100 x 1000
Velocity (fpm)
.02
Pr essur e Loss ( in. w g )
.6
.5
.4
.3
.2
.10
.09
.08
.07
.06
.05
.04
.03
.0 2
Static Pr essur e Dif fer ence (in. wg)
Static Pr essur e Dif fer ence (in. wg)
1. 0
.9
.8
.7
.6
.5
.4
8. 5
8
7
6
5
4
3
2
1. 0
.9
.8
.7
.6
.5
.4
.3
.2
2
HCD-220
3 4 5 6 7 8 9 10 2 3 4
x 100 x 1000
Velocity (fpm)
.3
.2
230/330
1 2 3 4 5 6 7 8 9 10
W ith S e a ls
1 2 3 4 5 6 7 8 9 10
Air Leakage in
4 5 6 7 8 910
2 3 4 5
x 100 x 1000
Velocity (fpm)
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/ft 3 (1.2 kg/m 3 ).
5.5
5.2
5.3
13
Air Leakage in
Leakage
36 in. x 36 in. (914mm x 914mm) Damper
(based on 5 in. lb/ft 2 of torque)
22 0
230/3
15
15
10
9
8
7
6
10
9
8
7
6
5
5
Static Pr essur e Dif fer ence (in. wg)
4
3
2
1. 0
.9
.8
.7
.6
.5
W it h S e a ls
W it h o u t S e a ls
Static Pr essur e Dif fer ence (in. wg)
4
3
2
1. 0
.9
.8
.7
.6
.5
W it h S e a ls
.4
.4
.3
.3
.2
.2
1 2 3 4 5 6 7 8 910 20 30 40 50 60 70 80 90100 200
Air Leakage in CFM/Sq. Ft.
1 2 3 4 5 6 7 8 9 10
Air Leakage in CFM/

BOLT HOLES
HCD-220
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). Also, available is custom bolt hole pattern within the limitations of the chart below.
Dim.
W
Standard
-
Formula
-
VARIABLE
FORMULA
Description
W = DAMPER WIDTH
Damper Width H = DAMPER HEIGHT
D = FLANGE WIDTH
H - - Damper Height L = HOLE SPACING STD. = 6
D - - Flange WidthM = MOUNTING HOLE DIAMETER STD. = .4375
Y = JAMB GAGE LINE D/2
L 6 in.
- Hole SpacingV = NO. OF SPACES IN HEAD/SILL INT((W-1.5)/L)
(152mm)
F = NO. OF SPACES IN JAMB INT((H+2*Y)/L)
U = FIRST/LAST SPACE IN HEAD/SILL (W-(L*V))/2
M 7/16 in.
- Mounting Hole Diameter
J = FIRST LAST SPACE IN JAMB (H+2*D-(L*F))/2
(11mm)
Y - D/2 Jamb Gauge Line
V - INT((W-1.5)/L) Number of Spaces in Head/Sill
F - INT((H+2*Y)/L) Number of Spaces in Jamb
U - (W-(L*V))/2 First/Last Spce in Head/Sill
J - (H+2*D - (L*F))/2 First Last Space in Jamb
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; 3V type blades fabricated from 12 ga. (2.7mm)
galvanized steel; 3 ⁄4 in. (19mm) 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 showing damper suitable for
pressures to 15 in. wg (3.7 kPa), velocities to 4000 fpm
(20.3 m/s) and temperatures to 1500°F (816°C). Testing
and ratings to be in accordance with AMCA Standard
500-D.
Specifier may add the following:
Dampers shall be equipped with blade and jamb seals
for low leakage performance. Blade seals shall be: select
one of the following EPDM synthetic rubber for 250°F
(121°C) maximum temperature, or Silicone Rubber for
400°F (204°C) maximum temperature. Jamb seals shall be
flexible stainless steel.
Basis of design is Greenheck model HCD-220.
Copyright © 2013 Greenheck Fan Corporation
HCD-220 Rev. 11 Sept 2013