SCHEDULE TYPE:
PROJECT:
ENGINEER:
CONTRACTOR:
DATE
B SERIES
SUPERSEDES DRAWING NO.
5 - 7 - 12
1200
3 - 21 - 11
1210SS-2
STAINLESS STEEL SMOKE DAMPER
AIRFOIL BLADE • HIGH PERFORMANCE
ULTRA-LOW LEAKAGE
MODEL: 1212SS
(TYPE B SLEEVE ENCLOSURE)
Nailor Industries Inc. reserves the right to change any information concerning product or pricing without notice.
Dimensions are in inches (mm).
FOR DUCTS 8" (203) OR MORE IN WIDTH AND UNDER 8" (203) IN HEIGHT.
The 1210SS Series dampers are ideal for high humidity, mildly
corrosive or, with optional Type 316 construction, more severe
environments where building codes require a leakage rated smoke
damper as part of a static smoke control or dynamic smoke
management system.
The 1210SS Series has been especially designed and tested to offer
premium performance. The 1210SS Series provides the lowest
leakage class available and is qualified for vertical or horizontal
installation with airflow in either direction. Airfoil blade design and
elimination of blade sills, top and bottom, provide lowest pressure
drop. Unique inter-locking double skin blade design eliminates
combustible blade seals and provides flame and smoke seal under
fire conditions.
STANDARD SPECIFICATION:
Frame:
5" x 7/8" x 16 ga. (127 x 22 x 1.6) stainless steel hat channel.
Blades:
14 ga. (2.0) equivalent stainless steel formed airfoil on
5 1/2" (140) centers.
Linkage:
Concealed in frame. 12 ga. (2.7) stainless steel.
Bearings:
1/ 2" (13) dia. sintered stainless steel.
Axles:
1/ 2" (13) dia. stainless steel double bolted to blades.
Jackshaft:
1/2" (13) dia. stainless steel.
Jamb Seals:
Cambered stainless steel.
Sizes (Duct W x H):
Note:
Duct sizes less than 8" (203) in width only, or in both width and height,
require a Type ‘C’ enclosure (Model 1213SS).
SLEEVE / ENCLOSURE SELECTION:
❑
1212SS
Standard factory sleeve (caulked to UL requirements)
16" long x 20 ga. (406 x 1.0) (18 ga. for dampers over 84"
[2134] in width).
❑
1212SS
Non-standard sleeve. Specify _______ length _____ ga.
Available up to 36" (914) in length and 10 through 20 ga.
(3.5 through 1.0).
16" (406) STANDARD
5" (127)
8" (203)
STANDARD
'B'
ENCLOSURE
BOTH ENDS
JACKSHAFT
CONSTRUCTION TYPE:
❑
304
Type 304 Stainless Steel construction (Std.).
❑
316
Type 316 Stainless Steel construction (Opt.).
LEAKAGE CLASS/ELEVATED TEMPERATURE:
❑
I
❑
II @ 250°F
DYNAMIC VELOCITY/PRESSURE RATING:
24
2000 fpm @ 4" w.g.
ACTUATOR SELECTION:
❑
Electric
❑
Pneumatic
ACTUATOR LOCATION:
❑
External
(std.)
❑
Internal
(in the airstream)
ACTUATOR FAIL POSITION:
❑
Normally Closed
(std.)
❑
Normally Open
OPTIONS:
❑
MLS-300
Position indicator switch pack
For installation instructions, see IOM-SDINST.
CCW
TO
OPEN
H =
NOM.
DUCT
SIZE
W = NOM.
DUCT SIZE
8" (203)
OVERALL
QUALIFICATIONS:
• UL 555S CLASSIFIED SMOKE DAMPER (File # R9492)
Leakage Class I or II at 250°F elevated temperature.
• Meets NFPA 90A, 92A, 92B, 101 and 105 as well as IBC and
NBC (Canada) Building Code requirements.
• California State Fire Marshal Listing No. 03230-0935:107.
• City of New York MEA# 366-03-M.
• Maximum velocity: 2000 fpm@ 4" w.g.
Velocity/
Pressure
Rating
Elevated
Temp.
°F
Minimum
Maximum
Single Section
Single Section
Multiple Section
Vertical/Horizontal
Vertical/Horizontal Vertical/Horizontal
24
250
8" x 4" (203 x 102)
(Overall damper height is
8" [203])
36" x 7 1/2"
(914 x 191)
144" x 7 1/2"
(3658 x 191)
