model VFD-10D-A
11/2 hour • dynamic rated — fire damper
curtain style blade
Application
The VFD-10D-A fire damper employs curtain style blades for pointof-origin control of fire in static and dynamic HVAC systems. The
VFD-10D-A is qualified to 4,000 ft/min (20.3 m/s) and 4 in.wg. (1.0 kPa)
and may be installed in vertical walls or partitions, or horizontally in
floors or assemblies with fire resistance ratings up to 2 hours.
Standard Construction
Frame: 22 gauge (0.85) galvanized steel.
UL HNLJ.V-5: Ventilation Duct Assemblies
*** Maximum Dynamic Closure Velocity: 4,000 fpm (20.3 m/s)
2,000 fpm (10.2 m/s)
Maximum UL555S Rated Pressure: 4 in.wg. (1.0 kPa)
UL 555 listing: R11767
TIN
I SOF CALIFO G
CSFM listing: 3225-0368:101
L
ST
S
Installation: o Vertical Mount
Velocity Rating: o 2000 fpm
5/8" (16)
Std.
o 4000 fpm
Curtain Dampers VFD10DA (1/2) June 2014
o Duct access door factory mounted in common sleeve.
o Generic mullion for oversized masonry or concrete openings.
o Type-304 stainless steel construction.
Oval Transitions
Round Transitions
W*
H*
D
12"
(305)
Std.
(optional)
(standard-vertical)
Sleeve Style ISAR
(optional)
2"(51)
Std.
W
* Damper dimensions furnished
approximately 1/4" (6) undersize.
† Damper dimensions furnished
approximately 1/8" (3) undersize.
Model VFD-10D-A
(standard-horizontal)
Style AO
(optional)
W
Information is subject to change without notice or obligation.
POTTORFF ®
Model VFD-10D-A
3"
(76)
Std.
12"
Sleeve Style ISA
12"
(305)
Std.
5101 Blue Mound Road, Fort Worth, Texas 76106
(305)
Std.
(optional)
11"
3/4"
2"(51)
Std.
W
2"(51)
Std.
4-1/2" (114)
Std.
(Standard with W and H equal to damper width and height
dimensions. Available with W and H smaller than damper width
and height)
(Standard with D=W=H. Available with
D<W and H)
Style AR
L
Meets Building Code Standards: IBC, NBC, NFPA, SBC and UBC
o Horizontal Mount
o Factory installed sleeve: o Integral
Gauge: o 20 (1.0) o 18 (1.3) o 16 (1.6) o 14 (2.0) o 10 (3.5)
Length: o 12" (305) o 16" (406) o 24" (610) o Other ___
o Low leakage taped joints. (Integral sleeve required)
o Transitions: o Flanged (sleeve required)
o Round o Oval
o Duct connections (sleeve required):
o 1" (25) S-clip
o DM-25 o DM-35 o S & Drive o WARD
o Retaining angle systems:
Gauge: o 20 (1.0) o 16 (1.6)
Picture frame: o SSPF (single-side) o DSPF (2-side)
Individual angle sets: o SS (single-side) o DS (2-side)
o Alternate fire closure temperature.
o 212°F (100°C)
2"(51)
Std.
D
E MA
Meets NFPA Standards: 90A, 92A, 92B and 101
Stainless Steel: Single section: Vertical: 36" ¥ 36" (914 ¥ 914)
Options
H
RS
R VI C
F IR
AL
E
A
New York City MEA listing: 295-98-E
A
ST
Maximum Size: Single section: Vertical: 36" ¥ 48" (914 ¥ 1219)
Horizontal: 36" ¥ 36" (914 ¥ 914)
Multiple Section: Vertical: 72" ¥ 48" (1829 ¥ 1219)
36" ¥ 96" (914 ¥ 2438)
Horizontal: 36" ¥ 36" (914 ¥ 914)
72" ¥ 18" (1829 ¥ 457)
R
NI
6" ¥ 6" (152 ¥ 152)
E
AT
TE
E
Fire Closure Device: Fusible link.
Minimum Size:
UL 555 Fire Resistance Rating: 11/2 hour (vertical and horizontal)
Listings
Blades: 24 gauge (0.7) galvanized steel – curtain style.
Fire Closure Temperature: 165°F (75°C).
Ratings
(279)
Std.
(19)
Std.
Sleeve Style ISAF (optional)
with standard flange
(Typical for use with grille.)
***4000 fpm (20.3 m/s) limited to:
Sleeve Style ISAO
Single section: Vertical: 36" ¥ 48" (914 ¥ 1219)
Horizontal: 36" ¥ 18" (914 ¥ 457)
Multiple section: Horizontal: 36" ¥ 36" (914 ¥ 914)
72" ¥ 18" (1829 ¥ 457)
(optional)
NOTE: Dimensions in parentheses ( ) are millimeters.
www.pottorff.com
Single Section
C
H
H
C
Framed Unit — No Sleeve
(Multiple section units supplied as individual
dampers for field assembly)
C
C
H
H
C
Sleeve Style S — Common Sleeve
(Multiple section units suppled as a single
assembly)
H
(152)
(178)
(203)
(229)
(254)
(279)
(305)
(330)
(356)
(381)
(406)
(432)
(457)
(483)
(508)
(533)
(559)
(584)
(610)
(635)
(660)
(686)
(711)
(737)
(762)
(787)
(813)
(838)
(864)
(889)
(914)
(940)
(965)
(991)
(1016)
(1041)
(1067)
(1092)
(1118)
(1143)
(1168)
(1194)
(1219)
1-1/16"
1-3/16"
1-3/16"
1-3/16"
1-7/16"
1-7/16"
1-7/16"
1-9/16"
1-9/16"
1-13/16"
1-13/16"
1-13/16"
1-15/16"
1-15/16"
2-3/16"
2-3/16"
2-3/16"
2-5/16"
2-5/16"
2-9/16"
2-9/16"
2-9/16"
2-11/16"
2-11/16"
2-15/16"
2-15/16"
2-15/16"
3-1/16"
3-1/16"
3-5/16"
3-5/16"
3-5/16"
3-7/16"
3-7/16"
3-11/16"
3-11/16"
3-11/16"
3-13/16"
3-13/16"
4-1/16"
4-1/16"
4-1/16"
4-3/16"
(27)
(30)
(30)
(30)
(37)
(37)
(37)
(40)
(40)
(46)
(46)
(46)
(49)
(49)
(56)
(56)
(56)
(59)
(59)
(65)
(65)
(65)
(68)
(68)
(75)
(75)
(75)
(78)
(78)
(84)
(84)
(84)
(87)
(87)
(94)
(94)
(94)
(97)
(97)
(103)
(103)
(103)
(106)
49"
50"
51"
52"
53"
54"
55"
56"
57"
58"
59"
60"
61"
62"
63"
64"
65"
66"
67"
68"
69"
70"
71"
72"
73"
74"
75"
76"
77"
78"
79"
80"
81"
82"
83"
84"
85"
86"
87"
88"
89"
90"
91"
92"
93"
94"
95"
96"
(1245)
(1270)
(1295)
(1321)
(1346)
(1372)
(1397)
(1422)
(1448)
(1473)
(1499)
(1524)
(1549)
(1575)
(1600)
(1626)
(1651)
(1676)
(1702)
(1727)
(1753)
(1778)
(1803)
(1829)
(1854)
(1880)
(1905)
(1930)
(1956)
(1981)
(2007)
(2032)
(2057)
(2083)
(2108)
(2134)
(2159)
(2184)
(2210)
(2235)
(2261)
(2286)
(2311)
(2337)
(2362)
(2388)
(2413)
(2438)
2-9/16" (65)
2-9/16" (64)
2-9/16" (63)
2-9/16" (62)
2-9/16" (61)
2-9/16" (60)
2-11/16" (68)
2-11/16" (67)
2-11/16" (66)
2-11/16" (65)
2-15/16" (75)
2-15/16" (74)
2-15/16" (73)
2-15/16" (72)
2-15/16" (71)
2-15/16" (70)
3-1/16" (78)
3-1/16" (77)
3-1/16" (76)
3-1/16" (75)
3-5/16" (84)
3-5/16" (83)
3-5/16" (82)
3-5/16" (81)
3-5/16" (80)
3-5/16" (79)
3-7/16" (87)
3-7/16" (86)
3-7/16" (85)
3-7/16" (84)
3-11/16" (94)
3-11/16" (94)
3-11/16" (94)
3-11/16" (94)
3-11/16" (94)
3-11/16" (94)
3-13/16" (97)
3-13/16" (97)
3-13/16" (97)
3-13/16" (97)
4-1/16" (103)
4-1/16" (103)
4-1/16" (103)
4-1/16" (103)
4-1/16" (103)
4-1/16" (103)
4-3/16" (106)
4-3/16" (106)
Note: Dampers shown as vertical mount. Horizontal mount
supplied in the same orientation.
Multiple section dampers shown as one wide by two high two wide by one high similar.
C
C
6"
7"
8"
9"
10"
11"
12"
13"
14"
15"
16"
17"
18"
19"
20"
21"
22"
23"
24"
25"
26"
27"
28"
29"
30"
31"
32"
33"
34"
35"
36"
37"
38"
39"
40"
41"
42"
43"
44"
45"
46"
47"
48"
H
Sleeve Style IS — Integral Sleeve
(Multiple section units supplied as individual
dampers for field assembly)
Information is subject to change without notice or obligation.
POTTORFF ®
5101 Blue Mound Road, Fort Worth, Texas 76106
NOTE: Dimensions in parentheses ( ) are millimeters.
www.pottorff.com
Curtain Dampers VFD10DA (2/2) June 2014
C
Multiple Section
Nominal
Blade
Stack
Duct
Height 'H' Height 'C'
Blade
Stack
Height 'C'
Vertical Dampers Only
Nominal
Duct
Height 'H'
Vertical Dampers Only
Blade Stack Dimensional Data

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