 Extruded
Louver/Damper Combinations
Applications
Several choices are available where the combination of a louver and
a damper within a single unit is required. Models XC4/M intake and exhaust are gravity
operated. The exhaust model can be coupled with an electric or pneumatic actuator and used
for intake and/or exhaust applications.
Model XWD-6/M is furnished with a wingnut or pull-chain operator as
standard. Optional operators are hand crank, electric or pneumatic.
All of these models (except MDD) are furnished with blade seals as a
standard feature to reduce air leakage in the closed position.
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| MODEL |
XWD-6/M |
MDD |
XC4/M-INTAKE |
XC4/M-EXHAUST |
| Unit Type |
Drainable Combination |
Damper |
Gravity Combination |
Operable Baffle |
| Frame Depth |
6" |
4" |
4" |
4" |
| Frame Thickness |
.125" |
.081" |
.081" |
.081" |
| Blade Thickness (Fixed, Operable) |
.081", .125" |
.051" |
.081", .051" |
.081", .051" |
| Fixed Blade Angle |
37.5° |
N/A |
45° |
45° |
| Blade Spacing |
4.5" |
3" |
4.75" |
4.75" |
| Free Area (48" x 48") Sq. Ft. (%) |
8.71 (54%)** |
11.94 (75%)** |
6.18 (39%)** |
6.18 (39%) |
| Velocity @ Beginning Point of
Water Penetration (ft./min.)*† |
1019 |
- |
- |
- |
| Pressure Drop @ Max. Intake
Velocity (in. wg.) |
.11 |
- |
- |
- |
| Max. Intake Volume Flow Rate, 4'
x 4' Unit (cfm) |
8875 |
- |
- |
- |
| Exhaust Velocity @ 0.15" wg.
Pressure Drop (ft./min.) |
1250 |
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| Exhaust Volume Flow Rate@
0.15" wg., 4' x 4' Unit (cfm) |
10885 |
- |
- |
- |
*AMCA defines the beginning point of water penetration to be .01
oz./ft.2 free area.
†When designing intake louvers, this should be the maximum velocity.
**Blades in fully opened position.
University of Maryland Eastern Shore
Richard A. Henson Center
Princess Anne, MD
Airline Representative: Air Luxe Co.
Suggested Specification
Furnish and install, where indicated on the drawings,
Model XWD-6/M Extruded Drainable Combination Louver, as manufactured by Airline Products
Company, Hagerstown, Maryland. Louvers shall be 6" deep, fabricated from extruded
aluminum, alloy 6063-T52. Head, sill and stationary blades to be .081" thick (12
gauge); operable blades and jambs to be .125" thick (8 gauge). Jambs shall include an
integral water drain. Stationary blades shall be spaced at 5-1/2" centers on a 35º
angle and include a front gutter to direct water to jambs and mullions. Operable blades
shall rotate with 7/16" diameter aluminum pivot pins in nylon bushings and be
equipped with rubber gaskets for sealing. All blade linkage shall be concealed within the
jamb.
Louvers shall meet the following criteria for testing
and performance:
A 48" x 48" louver shall have a minimum free
area of 8.71 ft2 (54%).
The free area velocity at the beginning point of water
penetration shall be 1019 fpm. The pressure drop at this velocity shall not exceed
.05" water gauge.
At an exhaust free area velocity of 1250 fpm, pressure
drop shall not exceed .15" water gauge. |
